GSW Water Heater 319594 000 User Manual

INSTALLATION AND  
OPERATING INSTRUCTIONS  
Read these instructions thoroughly before starting  
POWER VENTED WATER HEATER  
WARNING:  
Improper installation, adjustment, alter-  
ation, service, or maintenance can cause  
injury or property damage. Refer to this  
manual. For assistance or additional infor-  
mation, consult a qualified installer, serv-  
ice agency, or the gas utility.  
FOR YOUR SAFETY  
• Do not store or use gasoline or other  
flammable vapours and liquids in the  
vicinity of this or any other appliance.  
• Installation and service must be per-  
formed by a qualified installer, service  
agency or the gas utility.  
WARNING:  
If the information in these instructions is  
not followed exactly, a fire or explosion  
may result causing property damage, per-  
sonal injury or death.  
WHAT TO DO IF YOU SMELL GAS  
• Do not try to light any appliance.  
• Do not touch any electrical switch; do  
not use any phone in your building.  
• Immediately call your gas supplier from  
a neighbor’s phone. Follow the gas  
supplier’s instructions.  
• If you cannot reach your gas supplier,  
call the fire department.  
GSW Water Heating is a division of  
A. O. Smith Enterprises Ltd.  
PART NO. 319594-000 REV. 01 (10-11)  
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This page intentionally left blank. May be used for notes or to record other installation information.  
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Your safety and the safety of others is very important.  
We have provided many important safety messages in this manual and on your appliance.  
Always read and obey all safety messages.  
This is the safety alert symbol.  
This symbol alerts you to potential hazards that can kill or hurt you and others.  
All safety messages will follow the safety alert symbol and either the word  
“DANGER” or “WARNING”.  
You can be killed or seriously injured if you don’t immediately follow  
instructions.  
DANGER  
WARNING  
You can be killed or seriously injured if you don’t follow instructions.  
All safety messages will tell you what the potential hazard is, tell you how to reduce the  
chance of injury, and tell you what can happen if the instructions are not followed.  
Examples of qualified service technicians include those  
trained in the plumbing and heating industry, local gas utili-  
ty personnel or an authorized service person.  
I) INTRODUCTION  
Thank you for purchasing a Flammable Vapour Ignition  
Resistant Power Vented Water Heater. This water heater  
is designed to reduce the risk of flammable vapour related  
Service to the Power Vent System should only be per-  
fires by shutting the burner down before flammable vapours  
formed by a qualified service technician.  
get into the water heater combustion chamber. This is  
achieved by the means of the flammable vapour sensor.  
The manufacturer and seller of this water heater will not  
Properly installed and maintained, it will provide years of  
assume any liability for any property damage, personal  
trouble free service.  
injury or death resulting from improper sizing, installation or  
This gas-fired water heater has been developed to produce  
failure to comply with these instructions.  
potable hot water for normal residential demands and may  
also be used in combination with space heating applica-  
The warranty on this water heater is in effect only when the  
tions. Any deviation from these applications could affect  
water heater is installed and operated in accordance with  
your warranty.  
these instructions. A data plate identifying your water heater  
can be found above the gas control/thermostat. When refer-  
ring to your water heater, always have the information listed  
on the data plate readily available.  
User Responsibilities  
This manual has been prepared to acquaint you with the  
installation, operation and maintenance of your gas fired  
water heater and provide important safety information in  
these areas. It is your responsibility to ensure that your  
water heater is properly installed and cared for.  
Protect your warranty: Regularly service your water  
heater as directed in the "Maintenance" section of this man-  
ual.  
FAILURE TO FOLLOW THE INSTRUCTIONS IN THIS  
MANUAL MAY RESULT IN SERIOUS BODILY INJURY  
AND/OR PROPERTY DAMAGE. THOROUGHLY READ  
AND UNDERSTAND ALL INSTRUCTIONS BEFORE YOU  
ATTEMPT TO INSTALL, OPERATE OR MAINTAIN THIS  
HEATER.  
Retain your original receipt as proof of purchase.  
Do not discard this manual. You or future users of this  
water heater will need it for reference.  
Installation and service requires trade knowledge in the  
areas of plumbing, electricity, venting, air supply and gas  
supply. If you lack these skills or have difficulty understand-  
ing these instructions, you should not proceed. Enlist the  
help of a qualified service technician to install this water  
heater.  
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lar products, should not be stored or used near the water  
heater or air intake. Due to the nature of air movement,  
flammable vapours can be carried some distance from the  
point of storage. The gas-fired water heater igniter or burn-  
er flame can ignite these vapours causing a flashback, fire  
or explosion, which may result in severe property damage,  
serious personal injury or death. If flammable liquids or  
vapours have spilled or leaked in the area of the water  
heater, leave the area immediately and call the fire depart-  
ment from a neighbor's home. Do not attempt to clean the  
spill until all ignition sources have been extinguished.  
II) SAFETY  
This water heater is design-certified by CSA International as  
a Category III, non-direct vented water heater that takes its  
combustion air either from the installation area or from air  
ducted to the unit from the outside.  
In addition to the installation instructions found in this man-  
ual, the water heater must be installed in accordance with  
all local and provincial or state codes or, in the absence of  
such, with the latest editions of the following specifications.  
For Installations in Canada:  
Safety Warning (Scalding)  
"Natural Gas and Propane Installation Code" CAN/CSA-  
B149.1 and "Canadian Electrical Code (CAN/CSA  
C22.1), Part I" available from:  
DANGER  
Canadian Standards Association,  
5060 Spectrum Way,  
Mississauga, Ontario, Canada  
L4W 5N6  
For Installations in the United States:  
"National Fuel Gas Code" ANSI Z223.1 (NFPA 54) and  
"National Electrical Code" (NFPA 70)" available from:  
American National Standards Institute,  
25 West 43rd Street,  
New York, NY 10036  
Hot water produced by this appliance can cause severe  
burns due to scalding. The hazard is increased for young  
children, the aged or the disabled when water temperatures  
exceed 52°C (125°F). Use tempering valves, also known as  
mixing valves, in the hot-water system to reduce the risk of  
scalding at point-of-use such as lavatories, sinks and  
bathing facilities (see Figure 17). Such precautions must be  
followed when this heater is operated in combination with  
dishwashing or space heating applications.  
Massachusetts code requires this water heater to be  
installed in accordance with Massachusetts Plumbing and  
Fuel Gas Code 248 CMR Section 2.00 and 5.00.  
Check your phone listings for the local authorities having  
jurisdiction over your installation.  
Safety Warning (Flammable Vapours)  
WARNING  
Safety Warning (Carbon Monoxide)  
DANGER  
Carbon Monoxide Warning  
• Follow all vent system requirements by  
the local authorities having jurisdiction  
over your installation.  
FLAMMABLES  
Flammable Vapours  
• Failure to do so can result in death, explo-  
sion or carbon monoxide poisoning.  
FIRE AND EXPLOSION HAZARD  
Can result in serious injury or death  
Do not store or use gasoline or other flammable vapours and liquids  
in the vicinity of this or any other appliance. Storage of or use of gasoline  
or other flammable vapours or liquids in the vicinity of this or any other  
appliance can result in serious injury or death.  
As with all fuel burning equipment, this heater requires an  
adequate supply of air for combustion and ventilation. An  
insufficient air supply can result in poor combustion or the  
re-circulation of the flue gases. Such a condition can cause  
soot build-up and present a fire hazard. Flow reversal of flue  
gases can cause an increase of carbon monoxide inside of  
the dwelling that could result in serious bodily harm or death  
from asphyxiation.  
There is a risk of property damage, personal injury or death  
from the by-products of combustion (e.g., flue gases), in  
using fuel-burning appliances such as water heaters. Areas  
that may not be suitable for water heater installation include  
those where flammable liquids, gasoline, solvents, adhe-  
sives etc. are stored, or where engine-driven equipment or  
vehicles are stored, operated or repaired. These, and simi-  
MAKE SURE THE FLOW OF COMBUSTION AND VENTI-  
LATION AIR IS NOT RESTRICTED.  
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Relief Valve Requirements (T&P)  
All water heaters must be fitted with a proper temperature  
and pressure relief valve. These valves must be certified as  
meeting the requirements of the "Standard For Relief  
Valves For Hot Water Supply Systems, ANSI  
Z21.22/CSA 4.4".  
IMPORTANT:  
This water heater must be installed strictly in accordance  
with the instructions enclosed, and local electrical, fuel  
and building codes. It is possible that plumbing connec-  
tions to the water heater, or the water heater itself, may  
develop leaks. IT IS THEREFORE IMPERATIVE that the  
water heater be installed so that any leakage of the tank  
or related water piping is directed to an adequate drain in  
such a manner that it cannot damage the building, furni-  
ture, floor covering, adjacent areas, lower floors of the  
structure or other property subject to water damage. This  
is particularly important if the water heater is installed in a  
multi-story building, on finished flooring or carpeted sur-  
faces. GSW WILL NOT ASSUME ANY LIABILITY for  
damage caused by water leaking from the water heater,  
pressure relief valve, or related fittings. Select a location  
as centralized within the piping system as possible. In any  
location selected, it is recommended that a suitable drain  
pan be installed under the water heater. This pan must  
limit the water level to a MAXIMUM depth of 45mm (1 3/4  
in.) and have a diameter that is a minimum of 50mm (2 in.)  
greater than the diameter of the water heater. Suitable  
piping shall connect the drain pan to a properly operating  
floor drain. When used with a fuel-fired heater, this drain  
pan must not restrict combustion air flow.  
Flooding/Freezing  
If this water heater has been exposed to flooding, freezing,  
fire or any unusual condition, do not put it into operation until  
it has been inspected and approved by a qualified service  
technician. THESE CONDITIONS CAN RESULT IN  
UNSEEN INTERNAL DAMAGE and are not subject to war-  
ranty coverage.  
CAUTION  
Hydrogen gas can be produced in a hot water system  
served by this heater that has not been used for a long  
period of time (generally two (2) weeks or more).  
Hydrogen gas is extremely flammable and can ignite  
when exposed to a spark or flame. To reduce the risk of  
injury under these conditions, it is recommended that the  
hot water faucet be opened for several minutes at the  
kitchen sink before using any electrical appliance con-  
nected to the hot water system. Use caution in opening  
faucets. If hydrogen is present, there will probably be an  
unusual sound such as air escaping through the pipe as  
the water begins to flow. There should be no smoking or  
open flame near the faucet at the time it is open.  
45mm MAX  
(1 3/4 in.)  
III) INSTALLATION  
Unpacking the Water Heater  
WARNING  
Excessive Weight Hazard  
Use two or more people to move and install  
water heater. Failure to do so can result in  
back or other injury.  
AT LEAST 50mm (2 in.)  
GREATER THAN THE DIAMETER  
OF THE WATER HEATER.  
Important: Do not remove any permanent instructions,  
labels, or the data label from outside of the water heater or  
on the inside of panels.  
PIPE TO  
ADEQUATE  
DRAIN  
Figure 1 Drain Pan Installation  
Location Requirements  
Remove exterior packaging and place installation com-  
ponents aside.  
Inspect all parts for damage prior to installation and  
start-up.  
Completely read all instructions before attempting to  
assemble and install this product.  
The water heater must be installed indoors in an area not  
subject to freezing temperatures and in a vertical position  
on a level surface. Water heaters located in unconditioned  
spaces (e.g., attics, basements etc.) may require insulation  
of the water piping, drain piping and venting to protect  
against condensation. The power vented series of water  
heaters are designed to vent the products of combustion  
horizontally through the wall or vertically through the roof.  
The blower expels the products of combustion by means of  
plastic piping to the outdoors without the need for a con-  
ventional chimney.  
If you observe damage to the water heater or any of its com-  
ponents, DO NOT ASSEMBLE OR INSTALL IT OR MAKE  
ANY ATTEMPT TO FIX THE DAMAGED PART(S). Contact  
the place of purchase for further instructions.  
After installation, dispose of packaging material in the  
proper manner.  
Select a location as centralized within the piping system as  
possible. The heater should be located in an area where  
leakage of the tank or connections will not result in damage  
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to the area adjacent to the water heater or to lower floors of Figure 2 may be used as a reference guide to locate the  
the structure (see "IMPORTANT" notice on the previous specific clearance locations. A minimum of 600mm (24 in.)  
page). Before installing this water heater, consideration and of front and top clearance and 100mm (4 in.) on each side  
planning must be given to the following details:  
should be provided for inspection and service.  
Proximity to walls and other objects (see "Clearance  
and Accessibility").  
Access to gas supply (see "Gas Supply").  
Routing and support of the vent piping and termination  
(see "Venting").  
Gas Supply  
DANGER  
Position of water supply and placement of water piping  
and floor drain (see "Water Supply").  
In Earthquake Zones  
Explosion Hazard  
• Use a CSA approved gas supply line.  
• Install a gas supply shut-off valve.  
• Do not connect a natural gas water heater  
to a L.P. gas supply.  
• Do not connect a L.P. gas water heater to  
a natural gas supply  
• Failure to follow these instructions can  
result in death, an explosion or carbon  
monoxide poisoning.  
The water heater must be braced, anchored, or strapped to  
avoid moving during an earthquake. Contact local utilities  
for code requirements in your area.  
Closet Installation & Floor Surfaces  
The water heater may be installed in a closet with a door off  
a bedroom or bathroom providing the units are installed and  
vented per the manufacturer's instructions.  
Important: If installing over carpeting, the carpeting must  
be protected by a metal or wood panel beneath the water  
heater. The protective panel must extend beyond the full  
width and depth of the water heater by at least 76mm (3 in.)  
in each direction or if in an alcove or closet installation, the  
entire floor must be covered by the panel.  
Read the data plate to be sure the water heater is made  
for the type of gas you will be using in your home. This  
information will be found on the data plate located above the  
gas control valve. If the information does not agree with the  
Clearances and Accessibility  
The minimum clearances between the heater and com- type of gas available, do not install or attempt to start. Call  
bustible materials are:  
your dealer.  
Top  
Front  
200mm (8 in.)  
100mm (4 in.)  
Note: An odourant is added by the gas supplier to the gas  
Rear and Sides 25mm (1 in.)  
used by this water heater. This odourant may fade over an  
Note: These requirements are also listed on the data plate extended period of time. Do not depend upon this odourant  
located on the front of the water heater.  
as an indication of leaking gas.  
The water heater is certified for installation on a com-  
bustible floor.  
CLOSETS  
ALCOVES  
AIR INTAKE *  
GAS  
CONTROL/  
THERMOSTAT  
MANUAL  
GAS  
SHUT-OFF  
BACK  
TOP TO  
CEILING  
VENT  
SIDES  
GROUND-  
JOINT UNION  
SIDES  
76mm  
(3 in.)  
VENT  
DRIP LEG  
SENSOR *  
FRONT 600mm  
(24 in.) MIN.  
FOR SERVICE  
* DO NOT BLOCK AIR INTAKE OR SENSOR ACCESS. ENSURE ADEQUATE  
CLEARANCE FOR AIR SUPPLY  
Figure 2 Minimum Clearance Locations  
Figure 3 Gas Piping (typical)  
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This gas piping must be installed in accordance with all local Gas Leak Testing  
and provincial or state codes or, in the absence of such, the Important: This water heater and its gas connection must  
latest edition of "Natural Gas and Propane Installation be leak tested before placing the appliance in operation.  
Code" CAN/CSA-B149.1 (Canada), or "National Fuel Gas  
Code" ANSI Z223.1 (NFPA 54) (U.S.A.).  
If the code requires the gas lines to be tested at a pres-  
sure exceeding 14 in. w.c. (3.5 kPa), the water heater  
and its manual shut-off valve must be disconnected  
from the gas supply piping system and the line capped.  
If the gas lines are to be tested at a pressure less than  
14 in. w.c. (3.5 kPa), the water heater must be isolated  
from the gas supply piping system by closing its manu-  
al shut-off valve.  
Use properly sized gas piping to ensure full gas input and a  
properly sized gas supply regulator to ensure adequate gas  
supply pressure. The supply piping and regulator must be  
large enough to satisfy the requirements of all appliances  
connected to the gas service when all appliances are oper-  
ating simultaneously. Undersized piping and insufficient  
pressure can restrict the gas flow causing the water heater Gas Operating Pressures  
to perform poorly. Improperly sized piping may pose a safe- The gas supply pressure and burner manifold pressure is  
ty hazard.  
listed on the data plate located on the front of the heater  
above the gas control/thermostat. Ensure the gas supply  
Note: When installing gas piping, apply sealing compounds pressure to the water heater and the burner manifold pres-  
approved for use with natural and propane gas.  
sure are properly adjusted while all appliances are in oper-  
1. Install a readily accessible manual shut-off valve in the ation. Refer to Figure 22 (Robertshaw) or Figure 24 (White-  
gas supply line as recommended by the local utility. The Rodgers) for Gas Control/Thermostat Details.  
owner/operator must be shown the location of this valve  
and be given instructions on how to use it to shut off the U.L.and CSA recognized fuel gas and Carbon Monoxide  
gas to the heater.  
(CO) detectors are recommended in all applications and  
2. Install a drip leg (if not already incorporated as part of should be installed using the manufacturer's instructions  
the water heater) as shown. The drip leg must be no and local codes, rules or regulations.  
less than 76mm (3 in.) long for the accumulation of dirt,  
foreign material, and water droplets.  
3. Install a ground joint union, or other approved gas dis-  
connect, between the gas control/thermostat and the  
manual shut-off valve. This is to allow easy removal of  
the gas control/thermostat.  
4. Turn the gas supply on and check for leaks. Use a chlo-  
ride-free soap and water solution (bubbles forming indi-  
cate a leak) or other approved method.  
WARNING  
Exposure to a higher gas supply pressure  
may cause damage to the control, resulting  
in explosion or fire. Consult your local gas  
supplier and gas authorities. DO NOT PUT  
INTO SERVICE IF OVER-PRESSURIZATION  
HAS OCCURRED.  
Gas Supply Pressure  
Important: The gas supply pressure must not exceed the  
maximum supply pressure as stated on the water heater's  
data plate.  
Gas line purging  
Air may be present in the gas lines and could prevent the  
burner from lighting on initial start-up. The gas lines should  
be purged of air by a qualified service technician after instal-  
lation of the gas piping system.  
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Note: The top opening shall not be lower than the top of the  
heater. The location of the bottom opening shall be 150-  
450mm (6-18 in.) above floor level.  
Air Requirements  
Important: Air for combustion and ventilation must not  
come from a corrosive atmosphere. Any failure due to cor-  
rosive elements in the atmosphere is excluded from war-  
ranty coverage.  
Note: Ensure sufficient ventilation air to prevent elevat-  
ed temperatures in closets and ventilated spaces.  
When an exhaust fan is installed in the same room as the  
water heater, the supply air openings must be of sufficient  
capacity to prevent a backflow of air through the water  
heater exhaust venting.  
Installations in or for certain places including, but not limited  
to, those listed below may require outdoor air for combus-  
tion to reduce the risk of chemical exposure:  
Beauty shops, Photo processing labs  
Buildings with indoor pools  
Water heaters installed in laundry, hobby or craft rooms  
Water heaters installed near chemical storage areas  
b). When using a single air supply, the duct shall terminate  
within 300mm (12 in.) above and within 600mm (24 in.)  
horizontally of the burner level of the appliance having  
the largest input.  
In such circumstances, outdoor combustion air may reduce,  
but will not eliminate the presence of corrosive chemicals in  
the air. Combustion air must be free of acid-forming chemi-  
cals such as sulfur, fluorine and chlorine. These elements  
are found in aerosol sprays, detergents, bleaches, cleaning  
solvents, air fresheners, paint and varnish removers, refrig-  
erants and many other commercial and household prod-  
ucts. When burned, vapours from these products form high-  
ly corrosive acid compounds. These products should not be  
stored or used near the water heater or air inlet.  
Refer to latest edition of the "Natural Gas and Propane  
Installation Codes" CAN/CSA-B149-1 for air supply duct  
sizes.  
The area in which the heater is located is classified as either  
"an unconfined space" or "a ventilated space."  
An unconfined space is defined as a space having a vol-  
ume not less than 50 cubic feet per 1000 BTU/hour (4.8  
cubic metres per kilowatt) of combined input rating of all  
appliances using the space. Adjacent open rooms may be  
included as part of the unconfined space, provided there  
are no closeable doors between these rooms. An exam-  
ple of this is an open basement.  
A ventilated space is one smaller than described above.  
For buildings using tight construction (newer and renovated  
structures), the air supply shall be introduced from the out-  
doors, regardless of whether the space is confined or  
unconfined. CHECK LOCAL CODES.  
(a)  
PERMANENT  
OPENINGS  
Ventilated Space Air Requirements for  
VENTILATED  
Canadian Installations  
UNCONFINED  
SPACE  
SPACE  
Refer to Figure 4 (a), or (b), for proper sizing and location of  
combustion air ducts and openings. CHECK LOCAL  
CODES.  
a). Two permanent openings shall be provided connecting  
to ventilated space (e.g. closet, small room) with the  
unconfined space. Each opening shall be equal or  
greater than 645cm2 (100 in2.) with a width to height  
ratio of 2:1. The top opening shall be located close to  
the ceiling.  
EQUIPMENT LOCATED IN VENTILATED  
SPACES; ALL AIR FROM INSIDE THE BUILDING.  
300mm  
(12 in.)  
(MIN)  
VENTILATED  
SPACE  
(b)  
GRADE  
COMBINATION  
COMBUSTION/  
VENTILATION  
AIR DUCT  
600mm (24 in.)  
300mm (12 in.)  
BASEMENT INSTALLATION, EQUIPMENT LOCATED  
IN VENTILATED SPACES; ALL AIR FROM OUTDOORS  
Figure 4 Combustion Air Supply Openings And Ducts  
Figure 4a Air Opening Locations  
(Can.)  
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Ventilated Space Air Requirements for  
U.S. Installations  
(a)  
Refer to Figure 5 (a), (b), (c) or (d) for proper sizing and  
location of combustion air ducts and openings. CHECK  
LOCAL CODES.  
PERMANENT  
OPENINGS  
a) Equipment located in ventilated spaces; all air from  
inside the building.  
VENTILATED  
SPACE  
UNCONFINED  
SPACE  
Two permanent openings shall be provided connecting  
to ventilated space (e.g. closet, small room) with the  
unconfined space. Each opening shall be equal or  
greater than 645cm2 (100 in2.) with a width to height  
ratio of 2:1. The top opening shall be located close to  
the ceiling.  
EQUIPMENT LOCATED IN VENTILATED  
SPACES; ALL AIR FROM INSIDE THE BUILDING.  
PERMANENT  
300mm VENTILATION  
VENTILATED  
(b)  
COMBUSTION  
AIR DUCT  
Note: The opening shall not be lower than the top of the  
heater. The location of the bottom opening shall be 150-  
450mm (6-18 in.) above floor level.  
SPACE  
(12 in.)  
AIR.  
300mm  
(12 in.)  
ABOVE  
GRADE  
OR  
b) Basement installation, equipment located in ventilated  
spaces; all air from outdoors.  
SNOW  
LINE  
Refer to the latest edition of the "National Fuel Gas  
Code" ANSI Z223.1 for air supply duct sizes and  
restrictions.  
GRADE  
c) Equipment located in ventilated spaces; all air from out-  
doors.  
BASEMENT INSTALLATION, EQUIPMENT LOCATED  
IN VENTILATED SPACES; ALL AIR FROM OUTDOORS  
300mm  
(12 in.)  
Refer to the latest edition of the "National Fuel Gas  
Code" ANSI Z223.1 for air supply duct sizes and  
restrictions.  
OUTDOORS  
AIR DUCT  
(c)  
d) Equipment located in ventilated spaces; all air from out-  
doors through ventilated attic.  
300mm (12 in.)  
Refer to the latest edition of the "National Fuel Gas  
Code" ANSI Z223.1 for air supply duct sizes and  
restrictions.  
VENTILATION  
COMBUSTION  
VENTILATED  
SPACE  
Note: Ensure sufficient ventilation air to prevent elevat-  
ed temperatures in closets and ventilated spaces.  
When an exhaust fan is installed in the same room as the  
water heater, the supply air openings must be of sufficient  
capacity to prevent a backflow of air through the water  
heater exhaust venting.  
EQUIPMENT LOCATED IN VENTILATED  
SPACES; ALL AIR FROM OUTDOORS.  
300mm (12 in.)  
ATTIC LOUVERS TO OUTDOORS  
(d)  
OUTLET  
AIR  
INLET AIR  
DUCT  
VENTILATED  
SPACE  
Burn Hazard  
300mm (12 in.)  
EQUIPMENT LOCATED IN VENTILATED SPACES; ALL  
AIR FROM OUTDOORS THROUGH VENTILATED ATTIC.  
Do not touch vent.  
Doing so can result in  
burns.  
Figure 5 Combustion Air Supply Openings And Ducts  
(U.S.A.)  
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Important Notes and Warnings  
Exhaust Venting  
This heater is certified to be installed using Schedule 40  
PVC or CPVC plastic vent material. In Canada some  
jurisdictions require that this material is approved to  
ULC S636. ULC S636 mandates that components from  
different systems must not be mixed in the same vent  
runs. Check local codes to determine which materials  
are allowed in your area and only use approved materi-  
al. All venting material and components must be joined  
with the approved primer/cleaner and solvent cement.  
Do not common vent this heater with any other appli-  
ance.  
This heater is designed to exhaust the products of combus-  
tion (flue gases) to the outdoors using a sealed piping sys-  
tem. Table 2 lists the allowable vent materials and sizing  
information. Figure 8 shows the general venting layout while  
Figures 9-11 show various end termination details and  
clearances. Connection of the venting piping to the blower  
is shown in Figures 13-15.  
Correct installation of the venting system is essential to the  
safe and efficient operation of this water heater. Vent piping  
must be installed in accordance with all applicable local and  
provincial or state codes. In the absence of such codes, all  
installation shall meet the requirements as stated in the lat-  
est edition of the "Natural Gas and Propane Installation  
Codes" CAN/CSA-B149-1 (Canada) or "National Fuel  
Gas Code" ANSI Z223.1 (NFPA 54) (U.S.A.).  
During operation the plastic piping will expand as it  
heats up and contract as it cools down. This is normal  
for this type of venting. Rigidly fastening the vent piping  
can cause undue stress that may result in the cracking  
or fracturing the vent piping material. A fracture of the  
venting pipe poses a serious safety hazard. To prevent  
stressing of the vent system, all hangers and supports  
must allow the vent piping freedom to move.  
NOT RECOMMENDED:  
PREFERRED PRACTICE:  
Use long sweep elbows wherever possible. Closely-  
coupled elbows and short radius elbows can reduce the  
venting capacity.  
All power vented water heaters generate a certain  
amount of operational noise. In order to minimize noise  
transmission to the support structure, use isolation pads  
between the pipe hangers and the vent pipe.  
STREET ELBOW  
NORMAL ELBOW  
Most power vent installations develop some condensa-  
tion in the vent piping. When using long runs of venting  
or when the venting passes through cold or unheated  
areas, considerable amounts of condensate from the  
flue gases can develop. Provision must be made for the  
condensate to drain freely from the system or to be col-  
lected in a condensate trap(s) that can be drained.  
Damage or fracture of the vent piping may occur if the  
condensate is allowed to collect and freeze. Pooling of  
condensate can restrict airflow and can cause nuisance  
failures of the system.  
150mm  
(6 in.) min.  
BACK TO BACK ELBOWS  
Be aware of any concealed wiring or piping inside the  
walls.  
Ensure sufficient ventilation air to prevent elevated tem-  
peratures in closets and ventilated spaces.  
90° SHORT SWEEP ELBOW  
(MORE RESTRICTIVE)  
90° LONG SWEEP ELBOW  
(LESS RESTRICTIVE)  
Figure 6 Pipe Fittings And Practices  
Note: The information provided in Figure 6 is intended as a  
guideline for good vent installation practices only and is not  
intended to restrict venting options beyond those restric-  
tions established by the latest edition of the "Natural Gas  
and Propane Installation Codes" CAN/CSA-B149-1 or  
any applicable local and provincial codes.  
VENT LENGTH LESS THAN OR  
EQUAL TO 6.1 EQUIVALENT METRES  
(20 FT.) USE THIS SCREEN.  
VENT LENGTH GREATER THAN 6.1  
EQUIVALENT METRES (20 FT.) USE  
THIS SCREEN.  
Figure 7 Rodent Screens  
– 11 –  
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Venting terminations and sizing  
shown in Figure 8. The appropriate screen is to be  
installed into the end of the termination elbow and  
secured with a small amount of silicone sealant. This  
will allow for easy removal for inspection and cleaning.  
For installations using 76mm (3 in.) venting, use the  
76mm (3 in.) termination elbow and screen (not sup-  
plied).  
Refer to Figure 8 and Table 2 for vent pipe materials  
and sizing. Examples of the vent terminations are  
shown in Figures 9 and 10. If the installation requires a  
vent riser, suitable drainage must be provided to ensure  
condensation does not accumulate. Termination  
through a roof is shown Figure 11.  
G/JW 40, 50 and 60-gallon heaters are supplied with a  
50mm (2 in.) termination elbow and (2) plastic "rodent  
screens" (see Figure.7). The screen is required to keep  
foreign objects, rodents and small birds from entering  
the venting system and only one (1) screen is to be  
installed in the termination elbow. These screens have  
been sized to ensure maximum energy efficiency of the  
venting system based on the "equivalent length" of the  
vent piping. How to determine the equivalent length is  
G/JW5065 high input models are supplied with a 76mm  
(3 in.) termination elbow that includes a steel mesh  
rodent screen.  
WATER  
HEATER SUFFIX  
MODEL  
* VENT  
MATERIAL  
(SCHEDULE 40)  
VENT PIPE  
SIZE  
MAXIMUM EQUIVALENT  
VENT LENGTH  
MINIMUM EQUIVALENT  
VENT LENGTH  
NVH,  
PVH  
0.76m (2.5 ft.) + one 90° elbow +  
termination elbow  
50mm (2 in.) PVC**, CPVC 12.3m (40 ft.) + termination elbow  
G/JW40,  
50, 60  
NVH,  
PVH  
76mm (3 in.) PVC**, CPVC 24.4m (80 ft.) + termination elbow 12.3m (40 ft.) + termination elbow  
SNV,  
SPV  
0.91m (3 ft.) + one 90° elbow +  
termination elbow  
G/JW5065  
76mm (3 in.)  
PVC, CPVC  
PVC, CPVC  
12.3m (40 ft.) + termination elbow  
G/JW5065 LNV 76mm (3 in.)  
19.8m (65 ft.) + termination elbow 6.9m (20 ft.) + termination elbow  
Equivalent lengths of straight pipe for various elbows using  
Schedule 40 PVC and CPVC.  
Notes:  
1. Use long radius elbows where possible. Minimum dis-  
tance between 90º elbows should be 150mm (6 in.).  
2. *Check local codes to determine which materials are  
allowed in your area.  
3. **Pipe assembly adapter must be used with PVC  
venting material (see Figures 13, 14 & 15).  
Short Sweep/ Long Sweep/  
Size  
Type  
Short Radius  
Long Radius  
1.52m (5 ft.)  
1.52m (5 ft.)  
50mm (2 in.) 90° elbow 2.44m (8 ft.)  
76mm (3 in.) 90° elbow 2.44m (8 ft.)  
50mm (2 in.) 45° elbow 0.91m (3 ft.) 0.76m (2.5 ft.)  
76mm (3 in.) 45° elbow 1.22m (4 ft.) 1.07m (3.5 ft.)  
Table 2 Allowable Vent Lengths and Materials (Vert. and Horiz.).  
NOTE: VENT PIPE MUST BE SUPPORTED EVERY 1.2m (4 ft.). TO PREVENT VIBRATION, USE ISOLATION  
PADS WHEN ATTACHING STRAPS TO FLOOR JOISTS, WALLS OR CEILINGS.  
TERMINATION  
ELBOW  
45°  
ELBOW  
90°  
ELBOW  
STRAP  
RODENT SCREEN  
(INSTALL INTO  
ELBOW)  
Example for calculating equivalent feet.  
Section “A” . . . . 0.15m . . (0.5 ft.)  
90° elbow . . . . . 1.83m . . (6.0 ft.)  
Section B . . . . . 0.31m . . (1.0 ft.)  
45° elbow . . . . . 0.91m . . (3.0 ft.)  
Section C . . . . . 0.46m . . (1.5 ft.)  
45° elbow . . . . . 0.91m . . (3.0 ft.)  
Section D . . . . . 4.57m . (15.0 ft.)  
Total Equivalent 9.14m . (30.0 ft.)  
PVC ADAPTER  
(SUPPLIED)  
150mm  
(6 in.)  
MIN.  
GROUND LEVEL OR  
MAXIMUM SNOW  
LINE*  
Based on this example use the (fully open) rodent  
screen for vent length greater than 6.1 equivalent  
metres (20 equivalent ft.) (see Figure 7).  
Figure 8 General Venting Layout  
– 12 –  
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Venting instructions  
10. Insert the vent piping through this hole and secure into  
position. Connect the vent pipe to the end termination  
elbow as shown in Figures.9-11.  
1. Plan the venting layout starting at the vent termination  
and work back toward the heater. Take into considera-  
tion the style and position of the vent termination, the  
vent pipe routing, elbows and connectors required and  
the necessary support hangers.  
2. G/JW 40, 50 and 60-gallon heaters may use 50mm (2  
in.) or 76mm (3 in.) venting depending on "Equivalent  
Vent Length" as described in Table 2. G/JW5065 high  
input models require 76mm (3 in.) venting. See also the  
section on "Vent pipe connection to blower".  
SEALANT  
ATTACH 90°  
TERMINATION  
3. Venting should be as direct as possible with the fewest  
number of fittings. Use long radius 45 degree and long  
radius 90 degree elbows wherever possible.  
4. Do not use 90 degree elbows "back to back" (other than  
termination installations) and do not use street elbows.  
Maintain a minimum 150mm (6 in.) straight section  
between elbows. Closely coupled and short radius  
elbows reduce the venting capacity (see Figure 6 and  
the note below it).  
ELBOW  
VENT PIPING MAY BE  
SLOPED  
IN  
ANY  
RODENT SCREEN  
(INSTALL INTO  
ELBOW)  
DIRECTION, AS LONG  
AS A WATER TRAP IS  
NOT CREATED IN  
THE VENTING SYS-  
TEM. THE SLOPE  
SHOULD BE KEPT TO  
300mm  
(12 in.)  
MIN.  
SEALANT  
GROUND LEVEL  
OR MAXIMUM  
SNOW LINE*  
A
MINIMUM SO AS  
NOT TO EXERT ANY  
UNDUE STRESS ON  
THE PIPE.  
5. DO NOT USE AN ELBOW AS A SUPPORT POINT.  
Elbows are not designed to carry the weight of the vent-  
ing system.  
* WHERE SNOW COVER IS NORMAL DURING WINTER, ENSURE  
SUFFICIENT VENT CLEARANCE TO PREVENT BLOCKAGE OR ICE BUILDUP.  
Figure 9 Vent Termination Exterior Installation  
6. Calculate "Equivalent Vent Length" before starting. Do  
not exceed the values shown in Table 2. An example of  
how this length is determined is shown in Figure 8. The  
value from your calculations should also be used to  
determine which rodent screen to install into the vent  
termination elbow.  
ATTACH 90°  
TERMINATION  
ELBOW  
BRACKET  
EQUIVALENT  
VENT LENGTH  
MEASURED FROM  
THIS POSITION  
RODENT  
SCREEN  
(INSTALL  
INTO  
7. Measure the vent piping and cut to required lengths.  
Pipes must be cut at right angles and deburred to  
ensure a good smooth fit with sufficient overlap for the  
glue joints. Correct any interference conditions.  
8. Provide support hangers for horizontal vent piping every  
1.2m (4 ft.) to prevent sagging and stress. Provide a  
minimum of 3mm (1/8 in.) rise per 1.2m (4 ft.) of vent  
piping to ensure adequate drainage. Horizontal vent  
piping must not sag to form valleys where condensate  
may collect. Vertical venting shall be supported every  
1.5m (5 ft.). Use appropriate support straps and vibra-  
tion isolators (foam pads) on straight sections only. Do  
not use elbows as support points. Allow sufficient clear-  
ance for expansion and contraction of the venting sys-  
tem.  
ELBOW)  
SEALANT  
300mm  
(12 in.)  
MIN.  
VENT  
RISER  
GROUND LEVEL  
OR MAXIMUM  
SNOW LINE*  
VENT PIPING TO BE  
SLOPED (DOWN)  
TOWARD HEATER TO  
PREVENT WATER  
FROM COLLECTING.  
SEALANT  
* WHERE SNOW COVER IS NORMAL DURING WINTER, ENSURE  
SUFFICIENT VENT CLEARANCE TO PREVENT BLOCKAGE OR ICE BUILDUP.  
Figure 10 Installation Of Fabricated Vent Riser.  
76mm (3 in.)  
MIN. LENGTH  
TERMINATION  
MAY BE 90°  
ELBOW  
9. At the point where the vent pipe exits the building, cut a  
65mm (2-1/2 in.) hole for 50mm (2 in.) venting or a  
90mm (3-1/2 in.) hole for 76mm (3 in.) venting.  
A VENT USED IN A SPECIAL  
RODENT  
CAUTION:  
VENTING SYSTEM WITH  
POSITIVE VENT PRESSURE  
AND PASSING THROUGH A  
ROOF SHALL EXTEND AT  
LEAST 450mm (18 in.)  
SCREEN  
(INSTALL  
INTO  
450mm  
(18 in.)  
Use of Solvent Cement and Primer  
• Use only in well-ventilated areas.  
• Do not use near flame or open fire.  
• Use only the Solvent Cement and Primer  
appropriate for the venting material being  
used.  
ELBOW)  
ABOVE  
THE  
HIGHEST  
POINT WHERE IT PASSES  
THROUGH THE ROOF SUR-  
FACE AND ANY OTHER  
ROOF  
LINE  
OBSTRUCTION WITHIN  
A
HORIZONTAL DISTANCE OF  
450mm (18 in.). A VERTICAL  
VENTING SYSTEM MUST  
BE SUPPORTED EVERY  
1.5m (5 ft.).  
• Solvent cements for plastic pipe are flam-  
mable liquids and must be kept away from  
all sources of ignition.  
Figure 11 Vertical Venting  
– 13 –  
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11. Dry fit all vent pipes, elbows, connectors and fittings 6. Loosen the upper clamp on the rubber coupling and  
before joining any parts with solvent cement. PARTS  
MUST FIT WITHOUT STRESS OR BENDING OF ANY  
SECTION and each connection must overlap a mini-  
mum of 13mm (1/2 in.). Do not force fit any of the con-  
nections. Use only the appropriate solvent cement.  
insert the sanded end of the CPVC vent pipe or the  
PVC transition coupler a full 32mm (1-1/4 in.). Do not  
use glue or sealant in the rubber coupling. Check that  
there is no stress on the connection or the vent pipe that  
may be caused by twisting or bending.  
Caution: Solvent cements may produce flammable vapours. * These parts are available from your water heater supplier.  
Use only in well-ventilated areas and keep away from all 7. Tighten the upper clamp so that the vent pipe is firmly  
sources of ignition.  
secured in the coupling and is gas tight. Do not over  
tighten or cause distortion of any of the parts. Ensure  
that the bottom of the rubber coupling is firmly seated  
on the blower outlet and that the lower gear clamp is  
also secure. Check to ensure that there is no distortion  
or movement of the clamped assembly once it is com-  
pleted.  
12. For 50mm (2 in.) venting, install the properly sized  
rodent screen into the 50mm (2 in.) outlet elbow and  
secure with a small quantity of silicone sealant.  
13. Outlet elbows for 76mm (3in) are installed with a metal  
rodent screen.  
14. Do not seal the vent piping to the wall until the venting  
is properly connected to the blower assembly.  
8. Complete the venting installation by sealing around the  
termination assembly where it passes through the out-  
side wall, inside and out, with silicone or other suitable  
sealant.  
Vent pipe connection to blower  
1. The plastic vent piping connects into the rubber cou-  
pling located on the top of the blower assembly. This  
coupling includes gear clamps to connect the venting to  
the blower. These connections must be properly seated  
and tightened to prevent the leakage of flue gases into  
the area. See Figures 15 & 15a.  
2. All G/JW 40, 50 and 60 gallon models, except hi-input  
5065 models, are assembled with a 76mm (3 in.) to  
50mm (2 in.) transition coupler that must be used for  
installations using 2 in. PVC or CPVC vent pipe.  
3. For G/JW 40, 50 and 60 gallon installations using 76mm  
(3 in.) PVC or CPVC vent pipe, remove the 76mm (3 in.)  
to 50mm (2 in.) transition coupler from the rubber cou-  
pling and connect the vent pipe directly to the rubber  
coupling. See Figure 15a.  
4. G/JW5065 hi input models are supplied with a 76mm (3  
in.) rubber coupling and are designed to accept PVC or  
CPVC vent pipe directly, as shown in Figure 15.  
5. Clean and lightly sand the end of the CPVC plastic vent  
pipe or PVC transition coupler that will connect into the  
rubber coupling.  
CAUTION:  
• Do Not Overtighten The Top And Bottom  
Gear Clamps Of The Rubber Coupling.  
• Do Not Apply Solvent Cement Or Silicone  
To The Rubber Coupling Connection.  
VENT PIPE  
50mm (2 in.)  
VENT PIPE  
76mm (3 in.)  
150mm (6 in.)  
150mm (6 in.)  
MIN. TO 1ST  
ELBOW  
MIN. TO 1ST  
ELBOW  
NON HI-INPUT MODEL  
HEATERS. BLOWER ASS’Y  
WITH RUBBER COUPLING  
AND TRANSITION COU-  
PLER FOR 50mm (2 in.)  
NOMINAL CPVC OR PVC  
VENT PIPE.  
HI-INPUT MODEL 5065  
HEATERS. BLOWER ASS’Y  
WITH RUBBER COUPLING  
FOR 76mm (3 in.) NOMINAL  
CPVC OR PVC VENT PIPE.  
RUBBER  
COUPLING  
TRANSITION  
COUPLER  
RUBBER  
COUPLING  
Figure 15a  
Blower, Fittings and Vent Pipe Options  
Figure 15 Blower, Fittings and Vent Pipe Options  
– 14 –  
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Filling the Water Heater  
Water Supply  
Do not insert the power cord into the electrical receptacle  
until all the following steps have been completed.  
1. Make sure the drain valve is closed.  
Piping Installation  
Piping, fittings, and valves should be installed according to  
the installation drawing (Figure 16). A pressure-reducing  
valve and/or an expansion tank may be required for instal-  
lations where the water pressure is high. The pressure-  
reducing valve should be located on the supply to the entire  
house in order to maintain equal hot and cold water pres-  
sure.  
2. Open all hot-water faucets served by the system to  
allow air to escape from the tank.  
3. Open the cold-water inlet valve.  
Note: When filling, avoid water leakage. Do not allow the  
insulation of the water heater to get wet as water can reduce  
the effectiveness of the insulation.  
Important:  
4. When an uninterrupted stream of water, without appar-  
ent air bubbles, flows from the open hot-water faucets,  
the tank is full.  
5. Close the hot-water faucets and check the system for  
leaks. Repair as required and retest.  
Do not apply heat to the water fittings on the heater as  
they may contain nonmetallic parts. If solder connec-  
tions are used, solder the pipe to an adapter before  
attaching the adapter to the hot and cold water fittings.  
Some models may contain energy saving heat traps to  
prevent the circulation of hot water within the pipes. Do  
not remove the inserts within the heat traps.  
Please note the following:  
The system should be installed only with piping that is suit-  
able for potable (drinkable) water such as copper, CPVC,  
PEX or polybutylene. DO NOT use PVC water piping.  
DO NOT use any pumps, valves, or fittings that are not  
compatible with potable water.  
DO NOT use valves that may cause excessive restriction to  
water flow. Use full flow ball or gate valves only.  
DO NOT use any lead based solder in potable water lines.  
Use appropriate tin-antimony or other equivalent material.  
DO NOT tamper with the gas control/thermostat, igniter,  
flammable vapour sensor or temperature and pressure  
relief valve. Tampering voids all warranties. Only qualified  
service technicians should service these components.  
DO NOT use with piping that has been treated with chro-  
mates, boiler seal, or other chemicals.  
Always use a proper grade of joint compound and be  
certain that all fittings are drawn up tight.  
1. Install the water piping and fittings as shown in Figure  
16. Connect the cold water supply to the fitting (3/4"  
NPT) marked "COLD" (or "C"). Connect the hot water  
supply to the fitting (3/4" NPT) marked "HOT" (or "H").  
2. The installation of unions in both the hot and cold water  
supply lines is recommended.  
3. The manufacturer of this water heater recommends  
installing a tempering valve in the domestic hot-water  
line as shown in Figure 17. These valves reduce the  
point-of-use water temperature by mixing cold and hot  
water. Contact a licensed plumber or the local plumbing  
authority.  
4. If installing the water heater in a closed water system,  
install an expansion tank in the cold water line as spec-  
ified under "Closed System/Thermal Expansion".  
5. Install a shut-off valve in the cold-water inlet line. It  
should be located close to the water heater and be eas-  
ily accessible. The owner/operator must be shown the  
location of this valve and be given instructions on how  
to use it to shut off the water to the heater.  
DO NOT add any chemicals to the system piping which will  
contaminate the potable water supply.  
IN A CLOSED SYSTEM USE EITHER: 1.THERMAL EXPANSION TANK  
OR  
2.PRESSURE RELIEF VALVE.  
HOT  
WATER  
NOTE: BLOWER  
OUTLET  
ASSEMBLY NOT  
SHOWN FOR  
CLARITY.  
PRESSURE  
REDUCING  
VALVE  
UNION  
WITH  
BYPASS  
COLD WATER  
INLET VALVE  
COLD WATER  
INLET  
TEMPERATURE AND  
PRESSURE RELIEF VALVE  
DISCHARGE LINE 300mm  
(12 in.) max (CANADA) OR  
150mm (6 in.) max (U.S.)  
ABOVE DRAIN  
MASSACHUSETTS: INSTALL A  
VACUUM RELIEF IN COLD WATER  
LINE PER SECTION 19MGL 142  
DRAIN PAN CONNECT TO  
PROPERLY OPERATING  
FLOOR DRAIN.  
Figure 16 Water Piping Installation  
– 15 –  
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Important: Only a new temperature and pressure relief  
valve should be used with your water heater. Do not use an  
old or existing valve, as it may be damaged or not adequate  
for the working pressure of the new water heater. Do not  
place any valve between the relief valve and the tank.  
FOLLOW THE  
TEMPERING  
VALVE MANU-  
FACTURER'S  
INSTRUCTIONS  
TEMPERED  
WATER TO  
FIXTURE  
TER  
A
COLD W  
WARNING  
T&P VALVE  
AND DIS-  
CHARGE  
LINE  
TEMPERING  
VALVE (SET  
TO 49°C  
HOT  
WATER  
OUTLET  
(120°F))  
Explosion Hazard  
• If the temperature and pressure relief  
valve is dripping or leaking, have a  
licensed plumber repair it.  
COLD  
WATER  
INLET  
• Do not plug valve.  
• Do not remove valve.  
• Failure to follow these instructions can  
result in death or an explosion.  
Figure 17 Tempering Valve Installation  
Closed System/Thermal Expansion  
The Temperature and Pressure Relief Valve:  
Periodic discharge of the temperature and pressure relief  
valve may be due to thermal expansion in a closed water  
supply system. The water utility supply meter may contain a  
check valve, backflow preventer or water pressure-reducing  
valve. This will create a closed water system. During the  
heating cycle of the water heater, the water expands caus-  
ing pressure inside the water heater to increase. This may  
cause the temperature and pressure relief valve to dis-  
charge small quantities of hot water. To prevent this, it is  
recommended that a diaphragm-type expansion tank (suit-  
able for potable water) be installed on the cold water supply  
line. The expansion tank must have a minimum capacity of  
5.6 litres (1.5 US gallons) for every 190 litres (50 US gal-  
lons) of stored water and be rated at the working pressure  
of the water heater. Contact the local water supplier or  
plumbing inspector for information on other methods to con-  
trol this situation.  
Must not be in contact with any electrical part.  
Must be connected to an adequate discharge line.  
Must not be rated higher than the working pressure  
shown on the data plate of the water heater.  
The Discharge Line/Driptube:  
Must not be smaller than the pipe size of the relief valve  
or have any reducing coupling installed in the discharge  
line.  
Must not be capped, blocked, plugged or contain any  
valve between the relief valve and the end of the dis-  
charge line.  
Must terminate a maximum of 300mm (12 in.) (Canada)  
or 150mm (6 in.) (U.S.A.) above the floor.  
Must be capable of withstanding 121°C (250°F) without  
distortion.  
Must be installed to allow complete drainage of both the  
valve and discharge line.  
Important: Do not plug or remove the temperature and  
pressure relief valve.  
Temperature and Pressure (T&P) Relief  
Valve  
For protection against excessive pressures and tempera-  
tures, a temperature and pressure relief valve must be  
installed in the opening marked "T&P RELIEF VALVE" (see  
Figure 18). This valve must be design certified by a nation-  
ally recognized testing laboratory that maintains periodic  
inspection of the production of listed equipment or materials  
as meeting the requirements of the "Standard For Relief  
Valves For Hot Water Supply Systems", ANSI  
Z21.22/CSA 4.4. The function of the temperature and pres-  
sure relief valve is to discharge water in large quantities in  
the event of excessive temperature or pressure developing  
in the water heater. The valve's relief pressure must not  
exceed the working pressure of the water heater as stated  
on the data plate.  
TEMPERATURE AND  
PRESSURE RELIEF  
VALVE  
DISCHARGE LINE 19mm (3/4 in.)  
MIN. DO NOT CAP OR PLUG.  
DRAIN PAN. CONNECT TO  
PROPERLY OPERATING  
FLOOR DRAIN.  
Figure 18 Temperature  
Installation  
&
Pressure Relief Valve  
– 16 –  
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Electrical Supply  
WARNING  
Electrical Shock Hazard  
• Disconnect power before  
servicing.  
• Replace all parts and panels  
before operating.  
• Failure to do so can result in  
death or electrical shock.  
Important: The electrical controls used inside the gas con-  
trol/thermostat of this water heater are polarity sensitive.  
Ensure the electrical supply is connected correctly in the  
receptacle box. Failure to connect correctly will prevent the  
unit from functioning properly (see Figures 19 & 20). Before  
performing any electrical service work, label all wires to  
avoid connection errors. If wiring has to be replaced, use  
only TYPE TEW 105°C wire, (except igniter wires). If there  
is a problem with igniter wires, replace igniter assembly in  
its entirety. In locations where a sump pump failure, flooding  
or exposure to water may be present, a ground fault recep-  
tacle is recommended.  
Important: Do not use an extension cord to connect the  
water heater to an electrical outlet.  
Ensure that the water heater and the outlet are proper-  
ly grounded. Failure to properly ground the heater can  
prevent the unit from operating.  
Figure 19 Wiring Diagram - Robertshaw Control  
Ensure that the water heater is installed in accordance  
with prevailing provisions of local codes, or, in the  
absence of such, the latest edition of "Canadian  
Electrical Code (CAN/CSA C22.1), Part I" (Canada) or  
"National Electrical Code" (NFPA 70) (U.S.A.).  
Before applying power to the water heater, always make  
sure:  
The voltage and frequency correspond to that specified  
on the water heater wiring diagram.  
The electrical outlet has the proper overload fuse or  
breaker protection.  
Fill the tank with water and check all connections for  
leaks. Open the nearest hot-water faucet and let it run  
for 3 minutes to purge the water lines of air and sedi-  
ment and to ensure complete filling of the tank. The  
electrical power may then be turned on. Verify proper  
operation after servicing.  
Note: Always reference the wiring diagram for the correct  
electrical connections.  
WARNING  
When the unit is plugged in, 120VAC is pres-  
ent at the electric connections of the gas  
control/thermostat.  
Figure 20 Wiring Diagram - White-Rodgers Control  
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Flammable Vapour Sensor  
* ROTATE LEFT (CCW)  
TO REMOVE  
When using a gas fired water heater there is a risk of flam-  
mable vapours entering the combustion chamber, being  
ignited by the burner flame and causing a flashback. In  
order to detect such flammable vapours before they enter  
the combustion chamber, this water heater is equipped with  
a flammable vapour sensor (FVS). It is a chemical-absorp-  
tion based sensor that is connected to the gas control/ther-  
mostat (see Figures 22 & 24). When exposed to flammable  
vapours it will trigger the control to stop the flow of gas and  
enter the FVS lockout state. While in the FVS lockout state  
the LED on the control will flash the gas lockout code.  
(Refer to the “System Error Codes” section of this manual  
for an explanation of the codes applicable to the control  
installed on your water heater.) If this error occurs, check  
around the water heater for sources of chemical contamina-  
tion such as: flammable vapours including gas vapours, sol-  
vents, paint and thinners as well as sources of water and  
detergents. Remove any such sources, check the sur-  
SCREW  
COVER*  
MOUNTING  
BRACKET  
FLAMMABLE  
VAPOUR SENSOR  
(PULL TO REMOVE)  
Figure 21 Flammable Vapour Sensor (exploded view)  
INLET  
PRESSURE  
PORT  
3/4” NPT. WRAP  
GAS CONTROL  
WITH TEFLON TAPE  
SWITCH (ON)  
(2 WRAPS MIN.)  
MANIFOLD  
PRESSURE  
ADJUSTMENT  
(REMOVE  
DIAL FOR  
ACCESS)  
GAS VALVE  
SOLENOID  
CONNECTOR  
FLAMMABLE VAPOUR  
160F MAX. DIAL  
SENSOR 2 PIN  
MOLEX CONNECTOR  
OUTLET  
PRESSURE  
PORT  
QUICK CONNECTS  
FOR POWER SUPPLY  
AND IGNITER  
GAS INLET  
1/2” NPT  
(UNDER)  
TERMINAL BLOCK BLOWER  
AND JUNCTION BLOCK 8  
PIN MOLEX CONNECTOR  
SYSTEM  
STATUS  
CODES  
LED INDICATOR  
140F MAX. DIAL  
OUTLET TO MANIFOLD  
DOOR ASS’Y (UNDER)  
GROUND CONNECTION  
GAS CONTROL-VIEW OF ELECTRICAL  
CONNECTORS, WITH COVER REMOVED  
GAS CONTROL-VIEW FROM GAS INLET  
WITH TEMPERATURE DIAL REMOVED  
FLAMMABLE  
VAPOUR  
SENSOR  
IGNITER  
BLOWER  
FLAME  
SENSOR  
CONNECTOR  
GAS VALVE  
SOLENOID  
AIR PRESSURE  
SWITCH  
GND  
HIGH LIMIT  
SWITCH  
L1  
N
POLARITY SENSITIVE DO NOT MIS-  
MATCH WIRING. FAILURE TO CONNECT  
CORRECTLY WILL PREVENT THE UNIT  
FROM FUNCTIONING PROPERLY.  
Figure 22 Gas Control/Thermostat Details and Wiring Diagram (Robertshaw)  
– 18 –  
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rounding area for damage and call a qualified service tech-  
nician to service the water heater and replace the flamma-  
ble vapour sensor. If there is a problem with the wiring of the  
flammable vapour sensor or the flammable vapour interface  
the LED will flash the failure status code.  
CALL FOR  
HEAT  
IGNITER IS  
ENERGIZED AND MAIN  
VALVE IS OPENED  
Resettable Lockout  
The gas control/thermostat can be reset by unplugging the  
power cord to remove power and then reinserting the plug  
to restore the power. Robertshaw controls will automatically  
attempt to reset after a 20 minute wait period. White-  
Rodgers Intelli-Vent™ controls will automatically reset after  
a 60 minute wait period. Also see "Troubleshooting Guide".  
CONTROL CHECKS TO  
ENSURE PRESSURE  
SWITCH IS OPEN  
MAIN BURNER ON AND  
THE FLAME IS  
SENSED BY CONTROL  
BLOWER IS  
ENERGIZED  
MAIN BURNER  
CONTINUES TILL THE  
WATER IN THE TANK  
REACHES  
Water Heater Operation  
THERMOSTAT  
SETTING  
Figure 23 shows the water heater's sequence of operation  
when a call for heat is initiated. The ignition control module  
will attempt to light the burner three times. If the ignition con-  
trol does not detect ignition it will enter lockout mode and  
flash the corresponding error code.  
CONTROL CHECKS TO  
ENSURE PRESSURE  
SWITCH CLOSES  
INDICATING BLOWER  
IS OPERATING AND  
THERE ARE NO  
MAIN BURNER SHUTS  
OFF. BLOWER  
CONTINUES FOR A  
POST PURGE TIME  
VENTING BLOCKAGES  
(INLET OR OUTLET)  
Figure 23 Sequence Of Operation  
3/4” NPT. WRAP  
WITH TEFLON TAPE  
(2 WRAPS MIN.)  
GROUND  
CONNECTION  
TEMPERATURE  
INDICATORS  
TEMPERATURE  
ADJUSTMENT  
BUTTONS  
MANIFOLD PRESSURE  
ADJUSTMENT (REMOVE  
CAP FOR ACCESS)  
GAS INLET  
1/2” NPT  
OUTLET  
PRESSURE  
PORT  
QUICK CONNECTS FOR  
POWER SUPPLY AND IGNITER  
LOCATED ON UNDERSIDE  
GAS
FRO
GAS CONTROL  
SIDE VIEW  
TO BURNER  
IGNITER AND FLAME  
PROBE ASSEMBLY  
FLAMMABLE  
VAPOUR SENSOR  
CONNECTOR  
BLACK  
WHITE  
GREEN  
TO POWER SUPPLY  
DISCONNECT AND  
OVERLOAD  
PROTECTION  
INTELLI-VENTTM  
CONTROL  
BOTTOM VIEW  
HIGH  
LIMIT  
SWITCH  
AIR  
PRESSURE  
SWITCH  
CONNECTOR  
COMBUSTION  
BLOWER  
GREEN  
Figure 24 Gas Control/Thermostat Details and Wiring Diagram (White-Rodgers)  
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Check Here  
Check Here  
Installation Checklist  
Water Heater Location  
Vent Termination  
Horizontal  
1.  
Centrally located with the water piping system.  
Located as close to gas piping and vent pipe  
system as possible.  
1.  
300mm (12 in.) min. above grade/snow level.  
2.  
Away from corners, other vents, windows etc.  
2.  
3.  
Located indoors and in a vertical position.  
Protected from freezing temperatures.  
Vertical  
1. Exhaust vent termination 450mm (18 in.) min.  
above roof/snow level.  
Proper clearances from combustible surfaces  
maintained and not installed directly on a car-  
peted floor.  
Water System Piping  
1.  
Temperature and Pressure relief valve proper-  
4.  
Provisions made to protect the area from water  
damage. Drain pan installed and piped to an  
adequate drain.  
ly installed with a discharge line run to an open  
drain and protected from freezing.  
2.  
3.  
4.  
All piping properly installed and free of leaks.  
Heater completely filled with water.  
5.  
6.  
Installation area free of corrosive elements and  
flammable material.  
Closed system pressure build-up precautions  
installed.  
Sufficient room to service the water heater.  
Gas Supply and Piping  
Electrical Connections  
1.  
Gas supply is the same type as listed on the  
water heater data plate.  
1.  
Unit connected to a dedicated 120V electrical  
supply.  
2.  
Gas line equipped with shut-off valve, union  
and drip leg  
2.  
3.  
4.  
Proper polarity.  
Water heater properly grounded.  
3.  
4.  
5.  
Approved pipe joint compound used.  
Installed in accordance with prevailing provi-  
sions of local codes, or in the absence of such,  
the latest edition of “Canadian Electrical  
Code (CAN/CSA C22.1), Part I(Canada) or  
“National Electrical Code” (NFPA 70)”  
(U.S.A.).  
Adequate pipe size and of approved material.  
Chloride-free soap and water solution or other  
approved means used to check all connections  
and fittings for possible gas leaks.  
Vent Pipe System  
1.  
2.  
Vent pipe and fittings of approved material.  
Acceptable size, length and number of elbows  
on exhaust vent system.  
If the answer to all of the questions  
above is “Yes”, read the Operating  
3.  
Installed in accordance with prevailing provi-  
sions of local codes, or in the absence of such,  
the latest edition of “Natural Gas and  
Propane Installation Code” CAN/CSA-  
B149.1 (Canada), or “National Fuel Gas  
Code” ANSI Z223.1 (NFPA 54) (U.S.A.).  
Instructions and proceed with lighting  
the heater.  
4.  
5.  
Horizontal piping slopes at an upward pitch of  
3mm (1/8 in.) rise per 1.2m (4 ft). away from  
the water heater.  
Not obstructed in any way.  
– 20 –  
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Mixing Valves  
IV) OPERATING INSTRUCTIONS  
Hot water can scald: Water heaters are intended to pro-  
duce hot water. Water heated to a temperature that will sat-  
isfy space heating, clothes washing, dish washing, and  
other sanitizing needs can scald and permanently injure you  
upon contact. Some people are more likely to be perma-  
nently injured by hot water than others. These include the  
elderly, children, the infirm, and physically/mentally handi-  
capped.  
CAUTION:  
Read before proceeding. If you do not  
follow these instructions exactly, a fire or  
explosion may result, causing property  
damage, personal injury or loss of life.  
If any one using the hot water fits into one of these groups  
or if there is a provincial, state or local code requiring a cer-  
tain temperature water at the hot water faucet, then you  
must take special precautions. In addition to using the low-  
est possible temperature setting that will satisfy your hot-  
water needs, a means such as a mixing valve, should be  
used at the hot-water faucets or at the water heater. Mixing  
valves are available at plumbing supply or hardware stores.  
Follow manufacturer’s instructions for installation of these  
valves. Before changing the factory settings on the thermo-  
stat, read the “Temperature Regulation” section in this man-  
ual.  
This appliance is equipped with an ignition  
device that automatically lights the burner.  
Do not try to light manually with  
a match or flame.  
Temperature Regulation  
This water heater’s intended purpose is to heat water. Hot  
water is needed for cleaning and sanitizing (bodies, dishes,  
clothing etc.). Untempered hot water can present a scald  
hazard. Depending on the time element and the people  
involved (adults, children, elderly, infirm etc.) scalding may  
occur at different temperatures.  
It is recommended that lower temperatures be used to avoid  
the risk of scalding. It is further recommended that the water  
temperature be set for the lowest temperature that will sat-  
isfy your hot-water needs. This will also provide the most  
energy efficient operation of the water heater.  
WARNING  
Never allow small children to use a hot-water  
faucet, or to draw their own bath water.  
Never leave a child or impaired person unat-  
tended in a bathtub or shower. Scald burns  
can result.  
Short, repeated heating cycles caused by small water uses  
can cause temperatures at the point-of-use to exceed the  
thermostat setting by up to 17°C (30°F). This condition is  
referred to as “stacking”. If you experience this type of use  
you should consider using lower temperature settings to  
reduce scald hazards.  
Valves for reducing the point-of-use temperature by mixing  
cold and hot water are available.  
WARNING  
DANGER  
Scald burns occur in under one second with  
71°C (160°F) water, which the thermostat will  
deliver if the temperature is set at “VERY  
HOT”. Lower settings of the temperature will  
reduce the risk of scald and will reduce your  
fuel bill.  
Water temperature over 52°C (125°F) can cause  
severe burns instantly or death from scalds.  
WARNING  
Risk of scalding  
Hot water can produce third degree burns  
in 6 seconds at . . . . . . . .60°C (140°F)  
in 30 seconds at . . . . . . .54°C (130°F)  
in 5 minutes at . . . . . . . . .49°C (120°F)  
Children, disabled and elderly are at highest risk of  
being scalded.  
Feel water before bathing or showering.  
Temperature limiting valves are available.  
– 21 –  
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Lighting Instructions (Robertshaw)  
– 22 –  
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Heater Shutdown  
CAUTION:  
1. Turn the thermostat dial to the lowest setting.  
2. If the heater is running let it shut down first.  
3. Turn off all electrical power to the heater or unplug the  
power cord from the receptacle.  
Read before proceeding. If you do not follow  
these instructions exactly, a fire or explosion  
may result, causing property damage, per-  
sonal injury or loss of life.  
4. Press the gas control switch located on the top of the  
control. It will automatically turn to the “OFF” position.  
5. Turn the manual gas supply valve to the water heater to  
the “OFF” position.  
Gas Control/Thermostat  
This heater may be equipped with the Robertshaw  
2000WDER gas control/thermostat and a hot-surface ignit-  
er. This control is a combination gas valve, thermostat and  
ignition controller for use on this power vented water heater.  
The valve contains a micro-controller that supervises the  
ignition sequence and monitors the temperature settings  
and operation of the heater. The controller also monitors the  
flammable vapour safety features of this heater.  
System Error Codes  
The micro-controller inside the gas control monitors the  
flammable vapour safety features, the ignition sequence,  
temperature settings and overall operation of the heater. If  
any of these parameters does not operate properly the con-  
troller will shut down the water heater, diagnose the failure  
and flash an error code. Table 3 lists the System Status  
Codes for the Robertshaw control. Refer to Table 3 and to  
the “Trouble Shooting Guide” to diagnose the problem  
before attempting corrective action. See also “Flammable  
Vapour Sensor” and “Resettable Lockout”.  
This heater is equipped with a hot-surface ignition sys-  
tem that automatically ignites the burner. Do not  
attempt to light this heater manually with a match or  
flame-producing device.  
Putting the Heater into Service  
1. Turn the manual gas shut-off valve for the heater to the  
“ON” position.  
2. Turn the gas control switch to “ON”.  
3. Follow the Lighting Instructions (Robertshaw) given on  
the side of the water heater and also depicted in this  
manual. See also “Gas Supply”, “Water Heater  
Operation” and “Sequence of Operation”.  
Steady ON  
Slow Flash  
Fast Flash  
Control Failure or Miswiring.*  
Water Heater is in Stand-by  
Mode.  
Water Heater is in Heat Mode.  
1 flash  
1 flash  
1 flash  
Ignition Failure.  
2 flashes  
Flammable Vapour Detected.*  
Flammable Vapour Sensor  
Interface Failure or Miswiring.*  
Temperature Adjustment  
The temperature dial is adjusted to its lowest tempera-  
ture position when shipped from factory.  
2 flashes  
3 flashes  
3 flashes  
3 flashes  
The temperature of the water can be selected by adjust-  
ing the temperature dial located on the front of the con-  
trol (see Figure 22).  
1 flash  
Pressure Switch Fails to Open.  
Pressure Switch Fails to Close  
or Hi-Limit Switch is Open.**  
Line/Neutral Polarity Failure.**  
ECO Failure.**  
Flame is Present at the End of  
Heat Cycle.**  
3 flashes  
The large arrow position of the thermostat is the pre-  
ferred starting point.  
Each division on the thermostat dial represents a 3°C  
(5°F) water temperature change.  
4 flashes  
4 flashes  
1 flash  
2 flashes  
4 flashes  
5 flashes  
3 flashes  
-
Note: To avoid scald injury, set the control to the lowest set-  
Vacation Mode.  
ting that will supply your hot-water needs.  
*
System lockout. Call your service provider for  
assistance.  
There is a hot-water scald potential if the thermostat is set  
too high. In households with children, disabled or the elder-  
ly, select a lower temperature setting. Tempering valves  
(mixing valves) for reducing point-of-use water tempera-  
tures are available and may be required by your local  
authority. Consult a licensed plumber or your local plumbing  
authority.  
** System interruption/safety shutdown. Resettable  
lock out condition.  
Table 3 System Status Codes  
WARNING  
Risk of scalding  
Hot water can produce third degree burns  
in 6 seconds at . . . . . . . .60°C (140°F)  
in 30 seconds at . . . . . . .54°C (130°F)  
in 5 minutes at . . . . . . . . .49°C (120°F)  
– 23 –  
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Lighting Instructions (White-Rodgers)  
– 24 –  
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The temperature of the water can be selected by using the  
temperature adjustment buttons on the front of the gas con-  
trol (see Figure 25) as follows:  
CAUTION:  
Read before proceeding. If you do not follow  
these instructions exactly, a fire or explosion  
may result, causing property damage, per-  
sonal injury or loss of life.  
1. “Wake up” the temperature indicators by holding down  
both the “COOLER” and “HOTTER” temperature adjust-  
ment buttons at the same time for one second. One or  
two of the temperature indicators will light up. After 30  
seconds, if no other buttons are pushed, the control will  
go back to “Sleep” mode and both buttons will again  
have to be pressed to see the water temperature set-  
ting.  
2. Release both of the temperature adjustment buttons.  
3. The current water temperature setting will be indicated.  
See Table 4 for an explanation of the temperature indi-  
cators.  
Gas Control/Thermostat  
Alternatively, this heater may be equipped with the White-  
Rodgers Intelli-VentTM gas control/thermostat and a hot-sur-  
face igniter. This control is a combination gas valve, ther-  
mostat and ignition controller for use on this power vented  
water heater. The valve contains a microcomputer that  
supervises the ignition sequence and monitors the temper-  
ature settings and operation of the heater. The computer  
also monitors the flammable vapour safety features of this  
heater.  
a. To decrease the temperature press and release the  
“COOLER” button once. The temperature indicators  
will now display the new temperature setting. Press  
and release the “COOLER” button until you have  
reached the desired setting.  
b. To increase the temperature press and release the  
“HOTTER” button once. The temperature indicators  
will now display the new temperature setting. Press  
and release the “HOTTER” button until you have  
reached the desired setting.  
This heater is equipped with a White-Rodgers Silicon  
Nitride Igniter system that automatically ignites the  
burner. Do not attempt to light this heater manually with  
a match or flame-producing device.  
Putting the Heater into Service  
1. Turn the manual gas shut-off valve for the heater to the  
“ON” position.  
Note: Holding down the button will not continue to lower the  
setting. The button must be pressed and released for each  
temperature change desired.  
Note: To avoid scald injury, set the control to the lowest set-  
ting that will supply the hot water for your needs. Refer to  
Table 4 to determine the approximate temperature setting,  
and the approximate time for scald injury at that tempera-  
ture.  
2. Follow the Lighting Instructions (White-Rodgers) given  
on the side of the water heater and also depicted in this  
manual. See also “Gas Supply”, “Water Heater  
Operation” and “Sequence of Operation”.  
3. Upon start up all the indicator lights on the front of the  
control will come on and then turn off. This indicates  
that the control has completed a self-diagnostic test and  
is ready for operation.  
Note: If any of the indicator lights remain on, this indicates  
a system fault that needs correcting. See the “System Error  
Codes” and “Troubleshooting Guide (White-Rodgers)” for  
corrective action.  
4. When you have completed setting the control wait 30  
seconds for the temperature indicators go off and the  
control to enter “Sleep” mode.  
APPROXIMATE  
TEMPERATURE  
°C (°F)  
Temperature Adjustment  
The control is adjusted to its lowest temperature setting  
(approximately 21°C (70°F)) when shipped from factory.  
DISPLAY  
21°C (70°F)  
(VACATION)  
TEMPERATURE  
INDICATORS  
43°C (110°F)  
46°C (115°F)  
49°C (120°F)  
52°C (125°F)  
54°C (130°F)  
57°C (135°F)  
60°C (140°F)  
63°C (145°F)*  
65°C (150°F)*  
TEMPERATURE  
ADJUSTMENT  
BUTTONS  
71°C (160°F)*  
FLASHING  
* These settings are not available on Hi-input models.  
Figure 25 Temperature Indicators and Adjustment  
Table 4 Temperature Settings  
– 25 –  
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Note: All the temperature indicators will be off during normal Heater Shutdown  
operation. If any time you see the indicators on, there may 1. Turn off all electrical power to the heater or unplug the  
be  
a
system error and you should consult the  
power cord from the receptacle.  
“Troubleshooting” section of this document, or contact a 2. Turn the manual gas supply valve to the water heater to  
trained service professional.  
the “OFF” position.  
System Error Codes  
WARNING  
The computer inside the gas control monitors the flammable  
vapour safety features, the ignition sequence, temperature  
settings and overall operation of the heater. If any of these  
parameters does not operate properly the computer will  
shut down the water heater and flash an error code. See the  
Scald burns occur in under one second with  
71°C (160°F) water, which this thermostat will  
deliver if the temperature is set at “VERY  
HOT”. Lower settings of the temperature will  
reduce the risk of scald and will reduce your  
fuel bill.  
“System  
Error  
Codes  
(White-Rodgers)”  
and  
“Troubleshooting Guide (White-Rodgers)” to diagnose the  
problem before attempting corrective action. See also  
“Flammable Vapour Sensor” and “Resettable Lockout”.  
There is a hot-water scald potential if the thermostat is set  
too high. In households with children, disabled or the elder-  
ly, select a lower temperature setting. Valves for reducing  
point-of-use temperature by mixing hot and cold water are  
available. Consult a licensed plumber or the local plumbing  
authority.  
TM  
Intelli-Vent System Error Codes  
SYMPTOM  
CORRECTIVE ACTION  
POSSIBLE CAUSE(S)  
An open earth ground circuit to 1. Check that the earth ground conductor is properly connected at the  
Error 1  
the ignition system.  
fuse box or breaker panel and the water heater.  
2. Check that the grounding conductors on the water heater are prop-  
erly connected and secure.  
The self diagnostic test detect- 1. Check for proper connection of the line neutral and line hot wires.  
ed a wiring error, reversed 2. Check that the appliance is securely connected to earth ground.  
polarity or a high resistance to  
Error 2  
Error 3  
Error 4  
earth ground.  
The pressure switch remained 1. The pressure switch wiring is incorrect.  
closed longer than 5 seconds 2. The pressure switch is defective and must be replaced.  
after the call for heat began.  
Blower does not start.  
The pressure switch remained 1. The pressure switch wiring is incorrect.  
open longer than 5 seconds 2. The pressure switch tubing is not connected correctly.  
after the combustion blower 3. Obstructions or restrictions in the water heater air intake or exhaust  
was energized.  
flue.  
4. Check the high temperature limit switch.  
The self diagnostic test has 1. Check that all wiring is correct and secure.  
detected an error in the hot- 2. Disconnect the igniter connector and measure the igniter resistance  
Error 5  
Error 6  
surface igniter circuit.  
with an accurate ohmmeter between pins 1 and 2. Resistance  
should be between 11.5 and 18.8 ohms. If the reading is incorrect,  
replace the hot-surface igniter.  
3. If the above checks are good, replace the control.  
The maximum number of igni- 1. Ensure the igniter is positioned correctly.  
tion retries or recycles has 2. Ensure the voltage to the water heater is 115-125 VAC.  
been reached and the system 3. Clear any obstructions or restrictions in the water heater air intake  
is in lockout for an hour. Cycle  
the power to the water heater  
off and on to reset.  
or exhaust flue.  
Table 5 Intelli-VentTM System Error Codes.  
– 26 –  
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SYMPTOM  
CORRECTIVE ACTION  
The self-diagnostic test found 1. Cycle power to the water heater “OFF” for 10 seconds and then  
POSSIBLE CAUSE(S)  
Error 7  
a problem with the gas valve  
driver circuit.  
back “ON”.  
2. If the above step did not clear the error, the control must be  
replaced.  
The self-diagnostic test has 1. Cycle the external power “OFF” for 10 seconds and then back “ON”.  
detected a problem with the 2. If the above step does not clear the error, the control must be  
Error 8  
Error 9  
internal microcomputer.  
replaced.  
The self-diagnostic test has 1. Cycle the external power “OFF” for 10 seconds and then back “ON”.  
detected a problem with the 2. If the above step does not clear the error, the control must be  
internal circuit.  
replaced.  
Flame signal sensed out of 1. Insure flame sensor ceramic insulator is not cracked.  
Error 10  
Error 11  
Error 12  
proper sequence.  
2. Turn power off for 10-20 seconds, and then on again to clear the  
error code.  
3. Replace the control.  
The high temperature thermal 1. Turn the power off for 10-20 seconds then on again to clear the  
cutoff is open.  
error code.  
2. Replace the control.  
The self-diagnostic test has 1. Make sure that there are no objects leaning against the front of the  
detected one of the tempera- control.  
ture adjust buttons stuck 2. Lightly press and release each of the buttons once.  
closed.  
3. If the above actions do not clear the error, the control will continue  
to regulate water temperature at the last setting, but you will not be  
able to change settings unless you replace the control.  
The self-diagnostic test has 1. Turn the power off for 10-20 seconds then on again to clear this  
detected that the water tem- error code.  
perature sensor is either open 2. If no wiring problems are found the control must be replaced.  
or short circuited.  
Error 13  
Error 14  
The self-diagnostic test found 1. Check that all wiring is correct and that there are no open or short  
a problem with the Flammable  
Vapour Wiring.  
circuits.  
The control detected the pres- 1. Check for and remove any sources of flammable vapours.  
ence of flammable vapours 2. Check the resistance of the FV sensor. If the resistance is more  
Error 15  
near the appliance and  
entered lockout.  
than 100K ohms replace the sensor.  
3. If the water heater is in operating condition replace the control.  
Table 5 (cont’d) Intelli-VentTM System Error Codes.  
– 27 –  
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Smoke/Odour  
V) OPERATION  
The water heater may give off a small amount of smoke and  
odour during the initial start-up of the unit. This is due to the  
burning off of oil from metal parts of a new unit and will dis-  
appear after a few minutes of operation.  
Burner Flames  
Inspect the burner flames through the viewport and com-  
pare them to the drawings in Figure 26. A properly operat-  
ing burner should produce a soft blue flame. Blue tips with  
light blue inner cones are satisfactory. The tips of the flame  
may have a slight yellow tint. The flame should not be all  
yellow or have a sharp blue-orange colour. Contaminated  
air may cause an orange coloured flame. Contact a qualified  
service technician if the flame is not satisfactory.  
Anode Rod/Water Odour  
Each water heater contains at least one anode rod, which  
will slowly deplete while protecting the glass-lined tank from  
corrosion and prolonging the life of the water heater. Once  
the anode is depleted, the tank will start to corrode, eventu-  
ally developing a leak. Certain water conditions will cause a  
reaction between this rod and the water. The most common  
complaint associated with the anode rod is a "rotten egg  
smell" produced from the presence of hydrogen sulfide gas  
dissolved in the water. Do not remove this rod perma-  
nently as it will void any warranties, stated or implied. A  
special anode can be ordered if water odour or discoloura-  
tion occurs. This rod may reduce, if not eliminate, water  
odour problems. The water supply system may require  
special filtration equipment from water conditioning compa-  
ny to successfully eliminate all water odour problems.  
Artificially softened water is exceedingly corrosive because  
the process substitutes sodium ions for magnesium and cal-  
cium ions. The use of a water softener may decrease the life  
of the water heater tank. The anode rod should be inspect-  
ed every year. If the rod is more than 50% depleted, the  
anode rod should be replaced. See “Anode Rod  
Replacement” in the Maintenance section of this manual.  
BLUE TIPS  
LIGHT BLUE INNER  
INCORRECT  
CONES ARE SATIS-  
FLAME LAZY  
FACTORY  
YELLOW  
CORRECT FLAME  
SOFT BLUE  
Figure 26 Flame Characteristics  
Operational Conditions  
Condensation  
Moisture from the products of combustion condenses on the  
tank surface and forms drops of water that may fall onto the  
burner or other hot surfaces. This will produce a "sizzling" or  
"frying" noise. This condensation is normal and should not  
be confused with a leaking tank. Condensation may  
increase or decrease at different times of the year. High effi-  
cient energy saver water heaters will produce larger  
amounts of condensation on initial start-up or when a large  
amount of hot water is being used. Do not confuse this with  
a "tank leak". Once the water reaches a temperature of  
49°C (120°F) and the tank warms up (usually 1-2 hours),  
the condensation will stop.  
VI) MAINTENANCE  
Draining and Flushing  
It is recommended that the tank be drained and flushed  
every 6 months to remove sediment that may build up dur-  
ing operation. The water heater should be drained if being  
shut down during freezing temperatures. To drain the tank,  
perform the following steps:  
Important: It is always recommended that a suitable drain  
pan be installed under the water heater to protect the area  
from water damage resulting from condensation, a leaking  
tank or piping connections. Refer to "Location  
Requirements". Under no circumstances is the manufactur-  
er to be held responsible for any water damage in connec-  
tion with this water heater.  
1. Turn off the gas to the water heater at the manual gas  
shut-off valve.  
2. Turn off the electrical supply to the water heater.  
3. Close the cold-water inlet valve.  
4. Open a nearby hot-water faucet.  
5. Connect a hose to the drain valve and terminate it to an  
adequate drain.  
Note: The drain hose should be rated for at least 93°C  
(200°F). If the drain hose does not have this rating, open the  
cold-water inlet valve and a nearby hot-water faucet until  
the water is no longer hot.  
6. Open the water heater drain valve and allow all the  
water to drain from the tank. Flush the tank with water  
as needed to remove sediment.  
Water Heater Sounds  
During the normal operation of the water heater, sounds or  
noises may be heard. These noises are common and may  
result from the following:  
1. Normal expansion and contraction of metal parts during  
periods of heat-up and cool-down.  
2. Condensation causes sizzling and popping within the  
burner area and should be considered normal.  
3. Sediment buildup in the tank bottom will create varying  
amounts of noise and may cause premature tank fail-  
ure. Drain and flush the tank as directed under  
"Draining and Flushing".  
7. Close the drain valve, refill the tank, and restart the  
heater as directed under "Water Heater Operation".  
If the water heater is going to be shut down for an extended  
period, the drain valve should be left open.  
Important: Condensation may occur when refilling the tank  
and should not be confused with a tank leak.  
– 28 –  
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Anode Rod Replacement  
Temperature and Pressure Relief Valve  
To replace the anode:  
WARNING  
1. Turn off gas supply to the water heater.  
2. Shut off the water supply and open a nearby hot-water  
faucet to depressurize the water tank.  
3. Drain approximately 20 litres (5 US gallons) of water  
from tank (Refer to "Draining and Flushing" for proper  
procedures.) Close drain valve.  
4. Remove old anode rod.  
5. Use Teflon® tape or approved pipe sealant on threads  
and install new anode rod.  
Explosion Hazard  
• If the temperature and pressure relief  
valve is dripping or leaking, have a  
licensed plumber repair it.  
6. Turn on water supply and open nearby hot-water faucet  
to purge air from water system.  
• Do not plug valve.  
• Do not remove valve.  
• Failure to follow these instructions can  
result in death or an explosion.  
7. Restart the water heater as directed under "Operating  
Your Water Heater." See the "Parts Reference  
Illustration" for anode rod location.  
Manually operate the temperature and pressure relief valve  
at least once a year to make sure it is working properly (see  
Figure 27). To prevent water damage, the valve must be  
properly connected to a discharge line that terminates at an  
adequate drain. Standing clear of the outlet (discharged  
water may be hot), slowly lift and release the lever handle  
on the temperature and pressure relief valve to allow the  
valve to operate freely and return to its closed position. If the  
valve fails to completely reset and continues to release  
water, immediately shut off the manual gas valve and the  
cold-water inlet valve and call a qualified service technician.  
Routine Preventative Maintenance  
Important: If you lack the necessary skills required to prop-  
erly perform this visual inspection, you should not proceed,  
but get help from a qualified service technician.  
At least annually, a visual inspection should be made of the  
venting and air supply system, piping systems and main  
burner. Check the water heater for the following:  
Build up of soot and carbon on the main burner. Check  
for a soft blue flame.  
Leaking or damaged water and gas piping.  
Presence of flammable or corrosive materials in the  
installation area.  
Temperature and Pressure  
Relief Valve  
Presence of combustible materials near the water  
heater.  
Verify proper operation after servicing this water heater.  
Manual Relief Valve  
Gas Control  
There are no user serviceable parts in this control. The con-  
trol is supplied with tamper resistant screws. DO NOT  
attempt to repair or adjust the control. If you experience  
problems, discontinue use and replace the control immedi-  
ately. Continuing to use a damaged control could result in  
fire and/or explosion.  
Discharge line to drain  
If you wish to verify that the water heater is operating prop-  
erly:  
Figure 27 T&P Valve Test  
1. Make sure there is power to the water heater.  
2. Make sure that the gas is turned on to the water heater.  
3. Initiate a call for heat by either drawing hot water from a  
nearby faucet or raising the temperature setting (see  
section “Temperature Regulation”).  
4. Note any error codes that appear and proceed to the  
“Troubleshooting” section.  
– 29 –  
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Venting System and Blower  
WARNING  
Keep the area around the heater clear and  
unobstructed.  
Inspect the venting system periodically (minimum twice  
annually) to make certain that the vent passageways, vent  
terminal and blower assembly are free and unobstructed.  
Ensure that any condensate is draining freely. Clean as nec-  
essary.  
Inspect the vent piping, elbows and connections for  
signs of stress cracking or deterioration. Make certain  
the venting is free to move and that all pipe hangers and  
isolation supports are properly positioned and securely  
attached. Replace any broken components and rectify  
any installation problems.  
Particles, especially lint, can clog the vent blower  
wheel. This can be problematic, especially where con-  
densation is present, as particles may adhere to the  
venting surfaces. These conditions can result in nui-  
sance failures. In areas that have a high level of air-  
borne particulate (e.g. lint, sawdust, process smoke,  
laundry areas, etc.) inspection and cleaning may need  
to be done more frequently. Clean the blower wheel and  
venting as required to ensure proper performance.  
Inspect the flue collector area for signs of corrosion.  
This can be an indication of contaminated air, a wet  
environment, poor burner set up, or high levels of con-  
densation occurring at the flue collector. Determine and  
correct any poor operating conditions.  
DRAFT  
AIR PRESSURE  
DIVERTER  
TUBING  
AIR INTAKE  
MOTOR  
VENTILATION  
OPENINGS  
OPENING FOR  
DRAFT DIVERTER  
BLOWER  
MOTOR  
L I M I T  
SWITCH  
LIMIT  
SWITCH  
WIRES  
Figure 28 Blower Maintenance  
– 30 –  
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VII) COMBO HEATING  
2. Install a drain valve at the lowest point of the heating  
loop so that water can be drained from the heating mod-  
ule without affecting the water heater.  
3. If the air handler does not have a venting means at the  
highest point of the piping arrangement, install an air  
bleed at the highest point of the plumbing arrangement.  
This section serves as a guide for the installation and use of  
"Combo" heating systems utilizing a domestic water heater  
that has been specifically approved for such use. It is writ-  
ten for those knowledgeable in the required trades and pro-  
fessionals involved in the design and installation of Combo  
Heating Systems.  
It is the responsibility of the installer/designer to follow  
all applicable codes to ensure the effectiveness and  
safety of the installation.  
System Requirements  
The following requirements must be met for the installation  
of Combo Heating Systems:  
1. All components used for the distribution of water in the  
heating loop must be suitable for potable water. These  
include all piping, fittings, solder and fluxes, pumps for  
circulation of water, valves, etc.  
CHECK VALVE  
EXPANSION TANK  
COLD  
SUPPLY  
(IF USED  
REQUIRES  
EXPANSION  
TANK)  
(OPTIONAL)  
HOT WATER  
TO HOUSE  
FIXTURE  
MIXING  
VALVE  
2. The water heater must not be connected to a hydronic  
heating system that has been used previously.  
3. No boiler treatment chemicals of any kind shall be intro-  
duced into the system.  
C
H
8in TO 12in  
MAX.  
M
CHECK  
VALVE  
COLD  
INLET  
H
O
T
4. The Combo System components must be selected and  
sized to meet and maintain the total calculated  
demands for both domestic service hot water and space  
heating requirement. The sizing and installation must be  
performed in accordance with good engineering prac-  
tice such as "ASHRAE Handbooks", HRAI,  
"Hydronics Institute Manuals", CSA B149.1, NFPA  
54, ANSI Z223.1, CSA F280, National/Provincial  
Building Codes, CSA C22.1, ANSI/NFPA 70, CSA  
B51 and/or codes having jurisdiction.  
OUTLET  
EXTERNAL  
CIRCULATOR  
FLOW  
CONTROL  
SUPPLY  
HOSE BIB  
(OPTIONAL)  
WATER  
HEATER  
RETURN  
DRAIN/PURGE  
VALVE  
I N T E R N A L  
CIRCULATOR  
5. The air handler (fan coil) and/or the circulating pump in  
a baseboard hydronic loop will require a dedicated  
120V circuit. This must be provided and identified for  
this purpose.  
AIR HANDLER  
Figure 29 Combo Heating - Air Handler  
CHECK VALVE  
(IF USED  
REQUIRES  
EXPANSION  
TANK)  
6. All piping between the water heater and the air handler  
or hydronic baseboard loop must be adequately insulat-  
ed to reduce heat loss.  
7. If the local jurisdiction requires a back-flow preventer in  
the cold water line, an expansion tank of adequate size  
must be installed.  
EXPANSION TANK  
COLD  
SUPPLY  
(OPTIONAL)  
HOT WATER  
TO HOUSE  
FIXTURE  
MIXING  
VALVE  
8. "Combo" Heating Systems require higher water temper-  
atures than other applications. When the system is  
used to supply water for Combo Heating applications, a  
means, such as mixing valve, must be installed to tem-  
per the water in order to reduce scald hazard potential  
(see Figures 29 & 30).  
C
H
8in TO 12in  
MAX.  
M
CHECK  
VALVE  
COLD  
INLET  
H
O
T
OUTLET  
EXTERNAL  
CIRCULATOR  
FLOW  
CONTROL  
SUPPLY  
HOSE BIB  
(OPTIONAL)  
Installation  
WATER  
HEATER  
The heating mode may be one of the following options:  
A. A fan coil/air handler (Figure 29).  
RETURN  
B. A hydronic baseboard (finned tube) loop/In floor heating  
(Figure 30).  
The following is a list of requirements for the installation of  
the heating loop to the water heater.  
HYDRONIC  
BASEBOARDS  
(SERIES CON-  
NECTED  
SHOWN)  
1. Install shut-off valves and unions so that the water  
heater can be isolated from the heating module should  
servicing of the water heater become necessary.  
Figure 30 Combo Heating - Baseboard  
– 31 –  
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VIII) TROUBLESHOOTING GUIDE  
Robertshaw 2000WDER and White-Rodgers Intelli-Vent  
TM  
SYMPTOM  
CORRECTIVE ACTION  
POSSIBLE CAUSE(S)  
1. No Power to unit.  
2. Thermostat setting too low.  
1. Plug in power cord, check fuses/supply  
voltage.  
3. Defective air pressure switch (must be 2. Increase thermostat temperature set-  
BLOWER WILL NOT  
START.  
open at start-up before blower is ener-  
gized).  
4. Defective blower.  
ting.  
3. Replace air pressure switch.  
4. Replace blower.  
5. Disconnected or loose wire.  
6. Control locked out.  
5. Repair/reconnect wires.  
6. Reset – determine cause of lockout.  
1. Air pressure switch not closing due to 1. Determine cause of insufficient draft.  
insufficient draft - check for:  
Check draft with manometer at pres-  
sure switch (refer to Table 2 for mini-  
mum acceptable draft settings).  
a) remove blockage,  
b) reduce vent length/increase vent  
size,  
a) vent piping blocked,  
b) piping length too long,  
c) frozen vent termination,  
d) clogged/dirty blower.  
2. Disconnected, torn or blocked pressure  
c) clear termination of snow/ice,  
d) clean blower wheel.  
BLOWER RUNS  
CONTINUOUSLY.  
sensing tubing from air pressure switch 2. Reconnect or replace pressure sensing  
to blower housing. tubing.  
3. Air pressure switch not closing due to 3. Replace defective pressure switch.  
defective switch.  
4. High limit switch open due to excessive  
vent temperature or defective switch.  
4. Determine cause of overheating check  
for: overfiring, insufficient air supply,  
high ambient air temperature (once  
activated high limit must be replaced).  
1. 120VAC polarity reversed at 120VAC 1. Reverse polarity at 120VAC outlet  
outlet receptacle.  
2. Defective hot-surface igniter.  
receptacle.  
HOT-SURFACE IGNITER  
NOT GLOWING FOLLOW-  
ING WARM-UP PERIOD.  
2. Replace igniter (Check for 120VAC  
across I1 & I2, Robertshaw only).  
3. Replace control.  
3. Defective Control.  
4. Defective Flammable Vapour Sensor.  
4. Replace Flammable Vapour Sensor.  
1. No gas supply.  
1. Check/turn on gas supply.  
2. Gas control switch in “OFF” position.  
3. Insufficient gas supply.  
2. Turn control switch to “ON” position.  
3. Ensure correct supply pressure for gas  
type (Nat Gas 7.0 in. w.c. (1.74 kPa))  
(Propane 11.0 in. w.c. (2.74 kPa)).  
4. Check/adjust for correct manifold gas  
pressure (NG 3.5 in. w.c.(0.87 kPa)),  
(Propane 10.0 in. w.c. (2.49 kPa)).  
5. Ensure correct gas type for water  
heater model.  
4. Incorrect manifold gas pressure.  
5. Incorrect gas type.  
6. Defective igniter/loose or disconnected  
wire.  
CONTROL LOCKED OUT.  
6. Replace defective igniter/reconnect  
wiring.  
7. Improperly positioned, dirty, or defec-  
tive flame rod/loose or disconnected 7. Reposition, clean, or replace defective  
wire.  
flame rod/reconnect wiring.  
8. Remove obstruction.  
9 Remove blockage/clean flue.  
10.Replace Control.  
8. Burner orifice clogged.  
9. Blocked water heater flue.  
10.Defective control.  
11.Defective Flammable Vapour Sensor.  
11.Replace Defective Flammable Vapour  
Sensor.  
1. Internal control fault.  
1. Replace control.  
2. ECO failure – excessive water temper- 2. Replace control.  
ature.  
CONTROL LOCKED OUT.  
*SOLID GREEN LED.  
3. Excessive humidity/damp environment. 3. Allow control to dry.  
– 32 –  
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IX) REFERENCE PARTS  
19. Air Inlet Snorkel  
Reference Parts Listing  
Replacement parts may be ordered through your plumber or  
the local distributor. When ordering replacement parts,  
always have the following information ready:  
1. Model, Serial and Product number  
2. Type of gas  
3. Item number  
4. Parts description  
See "Parts Reference Illustration" for a list of available  
repair parts.  
20. Combo Heating System Supply Outlet (Optional)  
21. Power Cord  
22. Air Switch (inside box)  
23. Junction Box  
24. Junction Box Cover  
25. Air Tubing  
26. Rubber Coupling  
27. Gear Clamp  
28. Draft Diverter  
29. Hot-Water Outlet Nipple  
30. Anode (under cap)  
31. Cold-Water Inlet Nipple  
32. Flexible Manifold Tube  
33. Viewport  
34. Hot-Surface Igniter  
35. Gas Orifice  
36. Sheet Metal Burner  
37. Gas Manifold  
38. Flame Sensor Rod  
39. Manifold Door Gasket  
40. Manifold Door  
41. Two Piece Grommet With Clip  
42. *Gas Control/Thermostat (White-Rodgers) (not shown)  
1. Vent Termination Elbow with Rodent Screen  
2. **Vent Pipe  
3. **Vent Pipe Coupling (if required)  
4. **Vent Pipe Elbow (long radius)  
5. Limit Switch  
6. T&P Valve  
7. Diptube  
8. Baffle Assembly  
9. Driptube  
10. *Gas Control/Thermostat (Robertshaw)  
11. Gas Control/Thermostat Cover (Robertshaw)  
12. Drain Valve  
13. Outer Gas Door  
14. Manifold Door Assembly (behind outer door)  
15. **Floor Drain  
16. **Drain Pan  
17. Flammable Vapour Sensor (under cover)  
18. Combo Heating System Return Inlet (Optional)  
*
Robertshaw and White-Rodgers systems are not  
interchangeable.  
** Items not supplied with the water heater.  
– 33 –  
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Parts Reference Illustration  
27  
31  
6
28  
29  
30  
1
2
3
4
5
26  
25  
23 24  
22  
21  
20  
19  
6
Rear View  
7
8
9
33  
32  
34  
35  
42  
11  
36  
10  
12  
18  
17  
37  
38  
14  
13  
15  
16  
39  
41  
40  
*Robertshaw Equipped  
Front View  
*
Robertshaw and White-Rodgers systems are not  
interchangeable.  
34  
38  
36  
35  
32  
33  
37  
39  
40  
41  
*White-Rodgers Equipped  
Figure 31 Parts Reference  
– 34 –  
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LIMITED WARRANTY  
When referencing the water heater for service or warranty, please refer to the rating plate afꢀxed to the unit for the following  
information:  
Use Copper Conductors Only  
Model Number  
AUTOMATIC STORAGE WATER HEATER  
For currenlly installed rating see element marking.  
Caution: Pressure relief valve Iimiting the pressure  
to 1034 kPa (150 psI) musl be installed.  
For safe operation, do not block pressure relief.  
This lank is equipped with  
a
temperature limit  
Warranty Code:  
P
3
1
R
5
1
S
6
1
U
8
2
V
9
1
W
Y
Catalogue Number  
(SKU)  
device located under the upper access door.  
CAUIlON: Risk of electrlc shock. Turn off power  
before opening access door. Do not turn on electric  
current until tank is full of water. Elements wlll bum  
out if tank is operated without water.  
Pour seulement conducteurs copper  
ACCUMIl.ATlON AUTOMATIQUE  
La puissance installee est indiquee sur l'element.  
ATTENTION: Une soupape de securite limitant la  
CHAUFFE-EAU  
A
Inner Tank Warranty Years:  
Component Part Warranty Years:  
10 12  
pression  
a
1034 kPa (150 psi) doit etre installee.  
Pour un fonctionment securitaire, ne pas enlever  
ou bloquer cette soupape.  
Ce reservoir est muni d'un dispositif reglage  
automatique de la temperature situe sous la porte  
d'acces superieure.  
ATTENTION: Risque de choc electrique. Coupez le  
courant avant d'ouvrir la porte d'acces. Ne  
remettez pas le courant en marche avant que le  
reservoir soit remplis d'eau. Si le reservoir  
fonctionment sans eau, les elements bruleront.  
Rating Plate  
1
1
Serial Number  
The Serial Number contains the warranty and manufacture date information for the unit as follows:  
U9999 F999999  
Example: U1005 F001234  
Warranty code  
Year of manufacture  
Week of manufacture  
Manufactured in week 5  
Manufactured in 2010  
8 year tank, 2 year parts warranty  
The Warranty Code indicates the inner tank and component part warranties as shown in the table above.  
LIMITED WARRANTY  
RESIDENTIAL STORAGE TANK TYPE WATER HEATER FOR INSTALLATION IN A SINGLE FAMILY DWELLING  
A. WHO IS COVERED.  
GSW WATER HEATING AND ITS SUPPLIERS, (herein collectively referred to as “Manufacturer”) warrants only to the  
original consumer purchaser (hereinafter “Owner”) of the water heater, within the boundaries of the continental United  
States or Canada, or their territories, so long as he or she continuously occupies the single family dwelling in which this  
water heater is initially installed for the period speciꢀed below. This Warranty is not transferable. This Warranty is reduced  
to one year if the water heater is used in a commercial or industrial application, or if the water heater is used to supply  
more than one dwelling unit. Consumers must retain point-of-sale proof of purchase to validate warranty entitlement.  
B. WHEN IT IS COVERED.  
The water heater is warranted only when it is installed, operated, and maintained in accordance with the printed instruc-  
tions accompanying the water heater. The water heater shall/must be installed in such a manner that, if the tank or any  
connection thereto should leak, the resulting ꢁow of water will not cause damage to the area in which it is installed. The  
water heater’s temperature and pressure relief valve must be piped to the nearest drain to avoid damage in the event the  
valve is actuated. For detailed instructions, read the manual accompanying the water heater and review drawings in the  
manual.  
C. WHAT THE MANUFACTURER WILL DO AND THE PERIOD OF COVERAGE.  
1. The Inner Tank. If the inner tank leaks within the warranty period shown in the table above after the original installa-  
tion, the Manufacturer will furnish a new water heater of the Manufacturer’s then prevailing comparable model. If in-  
dustry standards, regulatory changes, product improvements, or product obsolescence prohibits the Manufacturer from  
furnishing an identical model replacement water heater under this Warranty, the Owner will be furnished with a new  
water heater of comparable capacity; however, the Owner will be charged for the additional value of the item(s) which  
the Manufacturer has incorporated in the replacement water heater. A prior authorization number must be obtained  
from the Manufacturer before replacing the water heater. This Warranty is limited to one replacement water heater at  
the original installation site.  
2. Component Part. If any component, part other than the inner tank, proves to the Manufacturer’s satisfaction to be  
defective in material or workmanship within the warranty period shown in the table above after the original installation,  
the Manufacturer will furnish the Owner with a replacement for the defective part(s). This Warranty is limited to one  
replacement component part for each original part.  
3. Return of Defective Water Heater and Component Parts. The Manufacturer reserves the right to examine the al-  
leged defect in the water heater or component part(s). As such, it will be the Owner’s obligation (see paragraph D. 3) to  
return the water heater and/or component part(s) to the Manufacturer.  
a. When returning a water heater, it must include all component parts and the rating plate label.  
b. When returning component part(s), they must be individually tagged and identiꢀed with the water heater’s Model  
Number, SKU, Serial Number, date of purchase, and date of installation.  
c. THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF. THIS  
EXPRESS WARRANTY IS, WHERE PERMITTED BY LAW, IN LIEU OF AND EXCLUDES AND REPLACES ALL  
OTHER CONDITIONS, WARRANTIES, GUARANTEES, REPRESENTATIONS, OBLIGATIONS OR LIABILITIES  
OF THE MANUFACTURER OF ANY NATURE OR KIND, EXPRESS OR IMPLIED, HOWEVER ARISING (WHETH-  
ER BY CONTRACT, CONDUCT, STATEMENT, STATUTE, NEGLIGENCE, PRINCIPLES OF MANUFACTURER’S  
LIABILITY, OPERATION OF LAW, OR OTHERWISE) WITH RESPECT TO THE UNIT OR ITS FIRNESS FOR A  
PARTICULAR PURPOSE, METCHANTABILITY, INSTALLATION, OPERATION, REPAIR, OR REPLACEMENT.  
THE MANUFACTURER EXPRESSLY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES. IN NO EVENT WILL  
THE MANUFACTURER’S LIABILITIES EXCEED THE COST OF THE DEFECTIVE PART(S) OR UNIT.  
D. WHAT THIS WARRANTY DOES NOT COVER.  
1. The Unit must not be installed where water damage can result from a leak, while provision(s) shall be made for direct-  
ing any water escaping from the Unit to a properly operating drainpipe. As all units of this type may eventually leak,  
you must protect against any potential water damage. The Manufacturer accepts no responsibility for such damage,  
nor any incidental or consequential loss, nor damage(s) related thereto, suffered by the Owner of the Unit nor by any  
third party.  
2. The Manufacturer shall not be liable under this Warranty and this Warranty shall be void and have no effect if the fol-  
lowing events occur:  
a. The water heater or any of its component parts have been subject to misuse, alteration, neglect, or accident; or  
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b. The water heater has not been installed in accordance with the applicable local plumbing and/or building code(s)  
and/or regulations or, in their absence, with the latest edition of the Natural Gas and Propane Installation Code,  
and/or the Canadian Electrical Code; or  
c. The water heater is not installed, operated, and maintained in accordance with the Manufacturer’s instructions,  
including if the water heater has any additional aftermarket equipment introduced into the sealed system not ap-  
proved by the Manufacturer; or  
d. The water heater or any of its component parts are damaged or fails from operation with an empty or partially empty  
tank (such as, but not limited to elements burned out in a dry tank); or  
e. The water heater or any part has been under water; or  
f. The water heater is exposed to highly corrosive atmospheric conditions. No warranty extends, for example, and  
without limitation of the foregoing, to Units exposed to: salts, chemicals, exhausts, pollutants, or contaminants; or  
g. The water heater is not continuously supplied with potable water; or  
h. The water heater replacement is requested for reasons of noise, taste, odour, discolouration, and/or rust; or  
i. The water heater is operated at temperatures exceeding the maximum setting of the thermostat and/or high limit  
control provided by the Manufacturer, or at water pressures exceeding the pressure reading stated on the Unit; or  
j. The water heater is operated without an operating anode; or  
k. The water heater is supplied or operated with deionized water; or  
l. The water heater is removed from its original installation location; or  
m.The water heater is installed outdoors (this water heater is intended only for indoor installation); or  
n. The water heater is converted, or is attempted to be converted, from one voltage or wattage to another, if an electric  
water heater, or from one gas type to another, if a gas water heater; or  
o. The water heater has not been ꢀred at the factory rated input and fuel for which it was factory built; or  
p. The water heater or any of its component parts fail due to sediment build-up; or  
q. The water heater does not have installed a properly operating temperature and pressure relief valve, certiꢀed to  
ANSI Z21.22/CSA “Requirements for Relief Valves for Hot Water Supply Systems”; or  
r. The water heater or any of its component parts fail because of ꢀre, ꢁoods, lightning, or any other act of God, or any  
other contingency beyond the control of the Manufacturer; or  
s. The water heater is installed in a closed system without adequate provision for thermal expansion.  
3. Except when speciꢀcally prohibited by the applicable law, the Owner, and not the Manufacturer, shall be liable for  
and shall pay for all charges for labour or other expenses incurred in the removal, repair, or replacement of the water  
heater or any component part(s) claimed to be defective or any expense incurred to remedy any defect in the product.  
Such charges may include, but are not necessarily limited to:  
a. All freight, shipping, handling, and delivery costs of forwarding a new water heater or replacement part(s) to the  
Owner.  
b. All costs necessary or incidental in removing the defective water heater or component part(s) and installing a new  
water heater or component part(s).  
c. Any material required to complete and/or permits required for the installation of a new water heater or replacement  
part(s), and  
d. All costs necessary or incidental in returning the defective water heater or component part(s) to a location desig-  
nated by the Manufacturer.  
4. The terms of this Limited Warranty cannot be modiꢀed by any person, whether or not he/she claims to represent or  
act on behalf of the Manufacturer.  
E. HOW THE ORIGINAL OWNER CAN MAKE A WARRANTY CLAIM.  
1. The Owner should submit the warranty claim direct to the Manufacturer’s Service Department, at the address or phone  
number listed below, and the Manufacturer will arrange for the handling of the claim.  
2. Whenever any inquiry or request is made, be sure to include the water heater’s Catalogue Number, Model Number,  
Serial Number, date of purchase, date of installation, and location of installation.  
This Warranty and the Manufacturer’s obligations shall be construed and determined in accordance with the laws of both the  
Province of Ontario, and of Canada in force therein. This Warranty does not affect speciꢀc legal rights of a consumer under  
applicable law, except to the extent that such rights may e waived or replaced, and the provisions hereof are deemed to be  
amended to the extent necessary. The unenforceability of any provision, in whole or in part, of this Certiꢀcate shall not affect  
the remaining provisions. Any and all repair and/or replacement of part(s) or Unit are the sole and exclusive remedy avail-  
able against the Manufacturer.  
GSW Water Heating  
599 Hill Street West  
Fergus, ON Canada N1M 2X1  
Should you have any questions, please  
Visit us online at www.gsw-wh.com or www.johnwoodwaterheaters.com, or  
E-mail us at [email protected], or  
Call our Technical Support line at 1 888 GSW TECH (479 8324)  
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