State Industries Water Heater CCVIT PR6 50 User Manual

RESIDENTIAL GAS WATER HEATERS  
OWNER'S MANUAL  
Thank you for buying this energy efficient water heater from  
State Water Heaters. We appreciate your confidence in our  
products.  
Power Vented Gas Models  
PR6 40 XCVIT  
You should thoroughly read this manual before installation  
and/or operation of this water heater. Please pay particular  
attention to the important safety and operating instructions as  
PR6 40 CCVIT  
well as the WARNINGS and CAUTIONS.  
PR6 50 XCVIT  
PR6 50 CCVIT  
with Hot Surface Ignition  
TABLE OF CONTENTS  
PAGE  
GET TO KNOWYOUR WATER HEATER  
GENERAL SAFETYINFORMATION  
INSTALLATION  
2
3
4-12  
12-15  
15-16  
17-18  
19  
OPERATION & LIGHTING INSTRUCTIONS  
MAINTENANCE  
TROUBLESHOOTING  
WARRANTY  
CAUTION  
TEXT PRINTED OR OUTLINED IN RED CONTAINS  
INFORMATION RELATIVE TO YOUR SAFETY. PLEASE READ  
THOROUGHLY BEFORE INSTALLING AND USING THIS  
APPLIANCE.  
500 Lindahl Parkway  
Ashland City, TN 37015  
KEEP THIS MANUAL IN THE POCKET ON THE HEATER FOR FUTURE REFERENCE  
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.  
PRINTED IN U.S.A. 0305  
PART NO. 185172-000  
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then call your gas supplier or service agent. Keep area clear  
until a service call has been made.  
GENERAL SAFETY INFORMATION  
EXTERNAL DAMAGE  
At times you may not be able to smell an LP gas leak. One cause  
is odor fade, which is a loss of the chemical odorant that gives LP  
gas its distinctive smell. Another cause can be your physical  
condition, such as having a cold or a diminishing sense of smell  
with age. For these reasons, the use of a propane gas detector  
is recommended.  
Do not operate the water heater until it has been fully checked  
out by a qualified technician, if the water heater:  
• Has been exposed to fire or damage.  
• Displays evidence of sooting.  
• Produces steam or unusually hot water.  
IF YOU EXPERIENCE AN OUT-OF-GAS SITUATION, DO NOT  
TRY TO RELIGHTAPPLIANCE YOURSELF. Ask your LP delivery  
person to relight pilots for you. Only trained LP professionals  
should conduct the required safety checks in accordance with  
industry standards.  
If the water heater has been flooded it must be replaced.  
CHEMICAL VAPOR CORROSION  
EXTENDED NON-USE PERIODS  
WARNING  
CORROSION OF THE FLUEWAYS AND VENT SYSTEM MAY  
OCCUR IF AIR FOR COMBUSTION CONTAINS CERTAIN  
CHEMICAL VAPORS. SUCH CORROSION MAY RESULT IN  
FAILUREAND RISK OFASPHYXIATION.  
WARNING  
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  
WEEKS OR MORE). HYDROGEN GAS IS EXTREMELY  
FLAMMABLE. 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  
connected to the hot water system. 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 FAUCETAT THE TIME  
IT IS OPEN.  
Spray can propellants, cleaning solvents, refrigerator and air  
conditioning refrigerants, swimming pool chemicals, calcium and  
sodium chloride (water softener salt), waxes, and process  
chemicals are typical compounds which are potentially corrosive.  
Do not store products of this sort near the heater. Also, air which  
is brought in contact with the heater should not contain any of  
these chemicals. If necessary, uncontaminated air should be  
obtained from remote or outside sources. The limited warranty is  
voided when failure of water heater is due to a corrosive  
atmosphere. (Reference is made to the limited warranty for  
complete terms and conditions).  
INSULATION BLANKETS  
Insulation blankets available to the general public for external  
use on gas water heaters are not approved for use on your State  
water heater. The purpose of an insulation blanket is to reduce  
the standby heat loss encountered with storage tank heaters.  
Your State water heater meets and exceeds the National  
Appliance Energy Conservation Act standards with respect to  
insulation and standby loss requirements, making an insulation  
blanket unnecessary.  
IMPROPER COMBUSTION  
WARNING  
ATTIC AND/OR EXHAUST FANS OPERATING ON THE  
PREMISES WITHAWATER HEATER CAN RESULT IN CARBON  
MONOXIDE POISONING AND DEATH.  
OPERATION OF THESE FANS CAN PRODUCE A NEGATIVE  
DRAFT IN THE AREA OF THE WATER HEATER PREVENTING  
THE PRODUCTS OF COMBUSTION FROM EXHAUSTING  
THROUGH THE VENT PIPE.  
WARNING  
Should you choose to apply an insulation blanket to this heater,  
you should follow these instructions (See Figure 1 for identification  
of components mentioned below). Failure to follow these  
instructions can restrict the air flow required for proper combustion,  
potentially resulting in fire, asphyxiation, serious personal injury  
or death.  
The venting of the water heater should be inspected by a qualified  
service technician at the time of installation and periodically  
thereafter to ensure a down-draft condition does not exist.  
DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND  
VENTILATING AIR. ADEQUATE AIR FOR COMBUSTION AND  
VENTILATION MUST BE PROVIDED FOR SAFE OPERATION.  
Do not cover the outer door, thermostat or temperature &  
pressure relief valve.  
Do not allow insulation to come within 2 inches of dilution air  
inlet on the blower to prevent blockage of the dilution air.  
LIQUID PETROLEUM MODELS  
Do not allow insulation to come within 2" of the floor to prevent  
blockage of combustion air flow to the burner.  
WARNING  
Water heaters for propane or liquefied petroleum gas (LPG) are  
different from natural gas models. A natural gas heater will not  
function safely on LP gas and no attempt should be made to  
convert a heater from natural gas to LP gas.  
Do not cover the instruction manual. Keep it on the side of the  
water heater or nearby for future reference.  
Do obtain new warning and instruction labels from State  
Water Heaters for placement on the blanket directly over the  
existing labels.  
LP gas must be used with great caution. It is highly explosive  
and heavier than air. It collects first in the low areas making its  
odor difficult to detect at nose level. If LP gas is present or even  
suspected, do not attempt to find the cause yourself. Go to a  
neighbor's house, leaving your doors open to ventilate the house,  
Do inspect the insulation blanket frequently to make certain it  
does not sag, thereby obstructing combustion air flow.  
3
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AIR REQUIREMENTS  
INSTALLATION  
Dilution air temperature must be 100°F or less. In calculating the  
free area of a vent opening, the blocking effect of screens, louvers  
and grills should be considered. Screens shall not be of a mesh  
smaller than 1/4 inch square. If the free area is not known, the  
current edition of National Fuel Gas Code ANSI Z223.1/NFPA 54  
recommends using figures of 20-25 percent free area for wood  
louvers or 60-75 percent for metal grills or louvers.  
REQUIRED ABILITY  
INSTALLATION OR SERVICE OF THIS WATER HEATER  
REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED  
TRADESMAN IN THE FIELD INVOLVED. PLUMBING, AIR  
SUPPLY, VENTINGAND GAS SUPPLYARE REQUIRED.  
UNCONFINED SPACE  
In buildings of conventional frame, brick or stone construction,  
unconfined spaces may provide adequate air for combustion,  
ventilation, and dilution air for power venter.  
GENERAL  
The installation must conform to these instructions and the local  
code authority having jurisdiction. In the absence of local codes,  
the installation must comply with the current editions of the  
National Fuel Gas Code ANSI Z223.1/NFPA 54 and the National  
Electrical Code, NFPA 70. The former is available from the  
Canadian Standards Association, 8501 East Pleasant Valley  
Road, Cleveland, OH 44131, and both documents are available  
from the National Fire Protection Association, 1 Batterymarch  
Park, Quincy, MA02269.  
If the unconfined space is within a building of tight construction  
(as defined in the most recent revision of the National Fuel Gas  
Code Handbook), air for combustion, ventilation, and venter  
dilution must be obtained from outdoors. The installation  
instructions for confined spaces must be followed.  
GROUNDING  
The water heater when installed must be grounded in  
accordance with local codes, or in the absence of local codes:  
In the United States  
The National Electric Code, ANSI/NFPA 70.  
HIGH ALTITUDE INSTALLATION  
WARNING  
STANDARD MODELS ARE FOR INSTALLATION UP TO 2,000  
FEET (610m)ABOVE SEALEVEL.  
IF A STANDARD MODEL IS INSTALLED ABOVE 2,000 FEET  
(610m), INPUT RATING SHOULD BE REDUCED AT A RATE 4  
PERCENT FOR EACH 1,000 FEET (305m) ABOVE SEA LEVEL  
WHICH REQUIRES REPLACEMENT OF THE BURNER ORIFICE  
IN ACCORDANCE WITH THE NATIONAL FUEL GAS CODE  
(ANSI Z223.1/NFPA54).  
FAILURE TO REPLACETHE STANDARD ORIFICE WITHAHIGH  
ALTITUDE ORIFICE WHEN INSTALLED ABOVE 2,000 FEET  
(610m) COULD RESULT IN IMPROPER AND INEFFICIENT  
OPERATION OF THE WATER HEATER, PRODUCING CARBON  
MONOXIDE GAS IN EXCESS OF SAFE LIMITS, WHICH COULD  
RESULT IN SERIOUS INJURY OR DEATH. CONTACT YOUR  
LOCAL GAS SUPPLIER FORANY SPECIFIC CHANGES WHICH  
MAY BE REQUIRED IN YOURAREA.  
Installation:  
least 18” above the floor.  
This will reduce, but not  
eliminate, the risk of vapors  
being ignited by the main  
burner or hot surface  
igniter.  
Do not install water heater  
where flammable products  
will be stored or used  
unless the main burner and  
hot surface igniter are at  
LOCATION OF HEATER  
CONFINED SPACE  
When drawing combustion and dilution air from inside a  
conventionally constructed building to a confined space, such a  
space shall be provided with two permanent openings; ONE  
WITHIN 12 INCHES OF THE ENCLOSURE TOP AND ONE IN  
OR WITHIN 12 INCHES OF THE ENCLOSURE BOTTOM. Each  
opening shall have a free area of one square inch per 1000 Btuh  
of the total input of all appliances in the enclosure, but not less  
than 100 square inches.  
The heater is design certified by the Canadian Standards  
Association for installation on combustible flooring in a closet  
having minimum clearances from combustible material of: 0"  
clearance from sides and rear, 5" from the front and 12" from the  
top. (Standard clearance.) If clearances stated on the heater  
differ from standard clearances, install water heater according  
to clearances stated on heater.  
Adequate clearance for servicing this appliance should be  
considered before installation, such as changing the anodes, etc.  
If the confined space is within a building of tight construction, air  
for combustion, ventilation and power venter dilution must be  
obtained from outdoors. When directly communicating with the  
outdoors or communicating through vertical ducts, two  
permanent openings, located in the above manner, shall be  
provided. Each opening shall have a free area of not less than  
one square inch per 4000 Btuh of the total input of all appliances  
in the enclosure. If horizontal ducts are used, each opening  
shall have a free area of not less than one square inch per 2000  
Btuh of the total input of all appliances in the enclosure.  
A minimum clearance of 5" must be allowed for access to  
replaceable parts such as the thermostats, drain valve and relief  
valve.  
When installing the heater, consideration must be given to proper  
location. Location selected should be as close to the wall as  
practicable and as centralized with the water piping system as  
possible.  
4
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CAUTION  
In cold climates provide protection against freeze-up.  
THE HEATER SHOULD BE LOCATED IN AN AREA WHERE  
LEAKAGE OF THETANK OR CONNECTIONS WILLNOT RESULT  
IN DAMAGE TOTHEAREAADJACENTTOTHE HEATER OR TO  
LOWER FLOORS OF THE STRUCTURE. When such locations  
cannot be avoided, a suitable drain pan should be installed  
under the heater, see fig. 1. The pan should have a minimum  
length and width of at least 2 inches greater than the diameter of  
the heater and should be piped to an adequate drain. Drain  
pans suitable for these heaters are available from your dealer or  
State Water Heaters, 500 Lindahl Parkway, Ashland City, TN  
37015.  
Water heater life depends upon water quality, water pressure  
and the environment in which the water heater is installed. Water  
heaters are sometimes installed in locations where leakage  
may result in property damage, even with the use of a drain pan  
piped to a drain. However, unanticipated damage can be reduced  
or prevented by a leak detector or water shut-off device used in  
conjunction with a piped drain pan. These devices are available  
from some plumbing supply wholesalers and retailers, and  
detect and react to leakage in various ways:  
FIGURE2  
CLOSED WATER SYSTEM  
A closed system will exist if a back-flow preventer (check valve),  
or similar device is installed in the cold water line between the  
water heater and the street main (or well). Excessive pressure  
may develop due to the thermal expansion of heated water  
causing premature tank failure or intermittent relief valve  
operation. This type of failure is not covered by the limited  
warranty. An expansion tank may be necessary in the cold water  
supply to alleviate this situation, see fig. 1. Contact the local  
plumbing authority.  
• Sensors mounted in the drain pan that trigger an alarm or turn  
off the incoming water to the water heater when leakage is  
detected.  
• Sensors mounted in the drain pan that turn off the water supply  
to the entire home when water is detected in the drain pan.  
• Water supply shut-off devices that activate based on the water  
pressure differential between the cold water and hot water  
pipes connected to the water heater.  
If the temperature and pressure relief valve on the appliance  
discharges periodically, this may be due to thermal expansion  
in a closed water supply system. Contact the water supplier or  
local plumbing inspector on how to correct the situation. Do not  
plug the temperature and pressure relief valve.  
• Devices that will turn off the gas supply to a gas water heater  
while at the same time shutting off its water supply.  
GAS CONNECTIONS  
WARNING  
DO NOT INSTALL THIS WATER HEATER DIRECTLY ON A The minimum gas supply pressure is 4.5" W.C for natural gas  
CARPETED FLOOR. AFIRE HAZARD MAY RESULT. Instead the (11.0" W.C. for propane).  
water heater must be placed on a metal or wood panel extending  
THE HEATER IS NOT INTENDED FOR OPERATIONAT HIGHER  
THAN 14.0'' WATER COLUMN SUPPLYPRESSURE. EXPOSURE  
TO HIGHER GAS SUPPLY PRESSURE MAY CAUSE DAMAGE  
TO THE CONTROL WHICH COULD RESULT IN FIRE OR  
EXPLOSION. If overpressure has occurred such as through  
improper testing of gas lines or emergency malfunction of the  
supply system, the control must be checked for safe operation.  
Make sure that the outside vents on the supply regulators and  
the safety vent valves are protected against blockage. These  
are parts of the gas supply system not the heater. Vent blockage  
may occur during ice storms.  
beyond the full width and depth by at least 3 inches (76.2mm) in  
any direction. If the heater is installed in a carpeted alcove or  
closet, the entire floor shall be covered by the panel. Also, see  
DRAINING.  
WARNING  
For California installation this water heater must be braced,  
anchored, or strapped to avoid falling or moving during  
an earthquake. See instructions for correct installation  
procedures. Instructions may be obtained from your local dealer,  
wholesaler, public utilities or California’s Office of the State  
Architect, 400 P Street, Sacramento, CA 95814.  
IT IS IMPORTANT TO GUARD AGAINST CONTROL FOULING  
FROM CONTAMINANTS IN THE GAS WAYS. SUCH FOULING  
MAY CAUSE IMPROPER OPERATION, FIRE OR EXPLOSION.  
WATER CONNECTIONS  
Refer to figure 1 for typical installation. A suitable pipe thread  
sealant must be used to prevent leakage.  
All piping must comply with local codes and ordinances or with  
the National Fuel Gas Code (ANSI Z223.1/ NFPA-54) whichever  
applies. Copper and brass tubing and fittings (except tin lined  
copper tubing) shall not be used.  
WATER (POTABLE) HEATING AND SPACE  
HEATING  
1. All piping components connected to this unit for space heating  
applications shall be suitable for use with potable water.  
2. Toxic chemicals, such as those used for boiler treatment,  
shall NEVER be introduced into this system.  
REFER TO FIG. 1 FOR CONNECTION DETAILS. BEFORE  
ATTACHING THE GAS LINE BE SURE THAT ALL GAS PIPE IS  
CLEAN ON THE INSIDE.  
3. This unit may NEVER be connected to any existing heating  
system or component(s) previously used with a non-potable  
water heating appliance.  
4. When the system requires water for space heating at  
temperatures higher than required for domestic water  
purposes, a tempering valve must be installed. Please refer  
to Figure 2 for suggested piping arrangement.  
TO TRAP ANY DIRT OR FOREIGN MATERIAL IN THE GAS  
SUPPLY LINE, A DIRT LEG (SOMETIMES CALLED DRIP LEG)  
MUST BE INCORPORATED IN THE PIPING, FIG. 1. The dirt leg  
must be readily accessible. Install in accordance with  
recommendations of serving gas supplier. Refer to the current  
edition of National Fuel Gas Code, ANSI Z223.1/NFPA.  
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To prevent damage, care must be taken not to apply too much  
torque when attaching gas supply pipe to gas valve inlet. The  
thermostat inlet has a pad for use with back up wrench.  
IMPORTANT  
The vent system must terminate so that proper clearances are  
maintained as cited in local codes or the current edition of the  
National Fuel Gas Code,ANSI Z223.1/NFPA54, 7.3.4e and 7.8a,b,  
as follows:  
Apply joint compounds (pipe dope) sparingly and only to the  
male threads of pipe joints. Do not apply compound to the first  
two threads. Use compounds resistant to the action of liquefied  
petroleum gases. Do not use teflon tape on gas valve fittings.  
1. The exit terminals of a mechanical vent system shall be not  
less than 7 feet above grade when located adjacent to public  
walkways. (Figure. 3)  
2. A venting system shall terminate at least 3 feet above any  
forced air inlet located within 10 feet. (Figure 3)  
3. The venting system shall terminate at least 4 feet below, 4  
feet horizontally from or, 1 foot above any door, window or  
gravity air inlet into any building.  
DISCONNECT THE APPLIANCE AND ITS INDIVIDUAL SHUT  
OFF VALVE FROM THE GAS SUPPLY PIPING SYSTEM  
DURING ANY SUPPLY PRESSURE TESTING EXCEEDING  
1/2 PSI (3.5 kPa). GAS SUPPLY LINE MUST BE CAPPED  
WHEN DISCONNECTED FROM THE HEATER. FOR TEST  
PRESSURES AT 1/2 PSI (3.5 kPa) OR LESS, THE APPLIANCE  
NEED NOT BE DISCONNECTED, BUT MUST BE ISOLATED  
FROM THE SUPPLY PRESSURE TEST BY CLOSINGTHE MAIN  
MANUALGAS VALVE.  
The manufacturer also recommends that the vent termination  
should not be installed closer than 3 feet from an inside  
corner of an L shaped structure and not be less than 1 foot  
above grade.  
The vent shall terminate a minimum of 12'' above expected  
snowfall level to prevent blockage of vent termination.  
4. In cold climates, it is recommended that vent termination not  
be mounted directly above or within 3 feet horizontally from an  
oil tank vent or gas meter to avoid potential freeze-up from  
condensation.  
BEFORE PLACING THE HEATER IN OPERATION, CHECK FOR  
GAS LEAKAGE. USE SOAPAND WATER SOLUTION OR OTHER  
MATERIALACCEPTABLE FOR THIS PURPOSE. DO NOT USE  
MATCHES, CANDLES, FLAME OR OTHER SOURCES OF  
IGNITION TO LOCATE GAS LEAKS.  
Plan the vent system layout so that proper clearances are  
maintained from plumbing and wiring.  
RELIEF VALVE (P)-FIG. 1  
Vent pipes serving power vented appliances are classified by  
building codes as “vent connectors”. Required clearances from  
combustible materials must be provided in accordance with  
information in this manual under LOCATION OF HEATER and  
VENT TERMINAL INSTALLATIONS, and with the National Fuel  
Gas Code and local codes.  
A NEW TEMPERATURE AND PRESSURE RELIEF VALVE  
COMPLYING WITH THE STANDARD FOR RELIEF VALVESAND  
AUTOMATIC GAS SHUT OFF DEVICES FOR HOT WATER  
SUPPLY SYSTEMS, ANSI Z21.22 (CURRENT EDITION) MUST  
BE INSTALLED IN THE HEATER IN THE MARKED OPENING  
PROVIDED. THE VALVE MUST BE OFASIZE (INPUT RATING)  
THAT WILLBEADEQUATE FOR YOUR SIZE HEATER.  
IMPORTANT  
Check the metal tag on the relief valve and compare it to the  
heater’s rating plate. The pressure rating of relief valve must not  
exceed the working pressure shown on the rating plate of the  
heater. In addition the hourly Btu rated temperature steam  
discharge capacity of the relief valve shall not be less than the  
input rating of the heater. NO VALVE ISTO BE PLACED BETWEEN  
THE RELIEF VALVE AND TANK. DO NOT PLUG THE RELIEF  
VALVE.  
Plan the layout of the vent system from the vent termination to the  
appliance considering all of the 90 degree and 45 degree elbows  
plus the number of feet of pipe that would be needed to install  
the total vent system. Make sure to include the 90 degree elbow  
if required at the blower. Review the tables on page 9 to make  
sure that the vent system is within the allowed vent configuration.  
Multiple fittings, 90 or 45 degree, installed in close proximity to  
each other could result in intermittent lockouts or prevent the  
unit from firing. Plan the layout to locate the fittings as far apart  
as possible.  
The drain line connected to this valve must not contain a reducing  
coupling or other restriction and must terminate near a suitable  
drain to prevent water damage during valve operation. The  
discharge line shall be installed in a manner to allow complete  
drainage of both the valve and line. DO NOT THREAD, PLUG  
OR CAP THE END OF THE DRAIN LINE.  
CAUTION  
Termination of the vent system with a device other than the  
supplied type vent terminal could effect system performance  
and result in a safety hazard. The 2 inch vent terminal is a tee  
and the 3 inch vent terminal is a 45 degree elbow. Both vent  
terminals have protective screens.  
VENTING  
WARNING  
VENT TERMINAL INSTALLATION  
NEVER OPERATE THE HEATER UNLESS IT IS VENTED TO  
THE OUTDOORSAND HASADEQUATEAIR SUPPLYTOAVOID  
RISKS OF IMPROPER OPERATION, FIRE, EXPLOSION OR  
ASPHYXIATION.  
1. After the point of termination has been determined, use the  
cover plate as a template to mark the hole for the vent pipe to  
insert through the wall. BEWARE OF CONCEALED WIRING  
AND PIPING INSIDE OF WALL.  
Make sure the flue baffle and flue restrictor ring are properly  
aligned and inserted on top of the flue. This can be checked  
through the dilution air inlet of the blower.  
2. If the Vent Terminal is being installed on the outside of a  
finished wall, it may be easier to mark both the inside and  
outside wall. Align the holes by drilling a hole through the  
center of the template from the inside through to the outside.  
The template can now be positioned on the outside wall using  
the drilled hole as a centering point for the template.  
VENT PIPE TERMINATION  
NOTE: Before installing power venter determine place of vent  
pipe termination. See figure 3 on page 7.  
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WARNING  
VENT HOOD(S) MAY BE  
EXTREMELY HOT DURING  
OPERATION  
FIGURE 3  
SEQUENCE OF INSTALLATION  
3. A) MASONRY SIDE WALLS  
Chisel an opening approximately one half inch larger than the  
marked circle.  
1. The Power Vent Models come with the blower assembly  
installed.  
B) WOODEN SIDE WALLS  
2. After the unit is set in place, make sure the blower  
assembly is still mounted securely. Also make sure there  
is no damage to the blower.  
Drill a pilot hole approximately one quarter inch outside of the  
marked circle. This pilot hole is used as a starting point for a  
saws-all or sabre saw blade. Cut around the marked circle  
staying approximately one quarter inch outside of the line. (This  
will allow the vent pipe to easily slide through the opening. The  
resulting gap will be covered up by the vent terminal cover  
plates.) Repeat this step on inside wall if necessary.  
3. Make sure there is no packing material in the discharge of  
the blower or the intake of the dilution air restrictor. See  
Fig. 5.  
4. Make sure that the plastic tubing is still attached from the  
air pressure switch to the port on the blower housing.  
This unit can vent through 2 or 3 inch nonmetallic pipe and fittings.  
The vent pipe installation can be started from either the blower  
discharge or the termination wall. Keep in mind the total vent system  
(pipe and elbows) when installing the vent system. (SEE VENT  
TABLESAND FIGURES ON PAGES 9-10.)  
5. Make sure the ON/OFF switch is in the OFF position and  
that the outer harness is connected from the blower control  
box to the connector on the bottom side of the gas valve.  
If the outer harness is not factory installed, make sure the  
ON/OFF switch is in the OFF position and then connect  
the outer harness from the blower control box to the  
connector on the right side of the gas valve.  
FIGURE4  
The vent terminal should be kept as close as possible to the outside  
wall, but you need to allow at least 1.5 inches of pipe past the wall,  
for the wall flange and vent terminal to mount on the pipe.  
FIGURE5  
Figure 5 shows the optimal placement of the 3” to 2”  
reducer; however, the vent can be reduced at any point in  
the vent system as long as the 2” vent tables are followed.  
Before the vent terminal is installed, caulk (not supplied) around the  
pipe on the exterior wall and install the wall flange (can be held to the  
outside wall by placing some of the caulking on the back of the flange).  
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Do not plug in power cord until vent system is completely  
installed. The Power Vent operates on 110-120 Vac, therefore  
a grounded outlet must be within reach of the six (6) foot  
flexible power cord supplied with the unit (see fig. 1). The  
power cord supplied may be used only where local codes  
permit. If local codes do not permit the use of a flexible power  
supply cord:  
d.) Splice field wiring into existing wiring using code  
authorized method (wire nuts, etc.).  
e.) Be certain that neutral and line connections are not  
reversed when making these connections.  
f.) Close panel on the side of control box, make sure that  
access panel is secured shut.  
a.) Make sure the unit is unplugged from wall outlet. Remove  
screws and open panel on front of control box.  
b.) Cut the flexible power cord, leaving enough to be able to  
make connections, then remove the strain relief fitting  
from box.  
CAUTION  
LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN  
SERVICING CONTROLS. WIRING ERRORS CAN CAUSE  
IMPROPERAND DANGEROUS OPERATION. VERIFY PROPER  
OPERATIONAFTER SERVICING.  
c.) Install suitable conduit fitting in side of enclosure and  
then follow (d.) and (e.) below.  
FIGURE 6  
8
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TABLE FOR VENT PIPE LENGTH  
TWO (2) INCH DIAMETER PIPE  
**Number of 90° Elbows  
One (1)  
**Number of 45° Elbows  
Minimum Pipe  
Maximum Pipe  
30 Ft.  
None  
One (1)  
None  
One (1)  
None  
One (1)  
None  
One (1)  
2 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
One (1)  
Two (2)  
Two (2)  
Three (3)  
Three (3)  
Four (4)  
Four (4)  
27.5 Ft.  
25 Ft.  
22.5 Ft.  
20 Ft.  
17.5 Ft.  
15 Ft.  
12.5 Ft.  
THREE (3) INCH DIAMETER PIPE  
** Number of 90° Elbows  
One (1)  
**Number of 45° Elbows  
Minimum Pipe  
Maximum Pipe  
75 Ft.  
None  
One (1)  
None  
2 Ft.  
2 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
1 Ft.  
One (1)  
Two (2)  
Two (2)  
Three (3)  
Three (3)  
Four (4)  
72.5 Ft.  
70 Ft.  
67.5 Ft.  
65 Ft.  
62.5 Ft.  
60 Ft.  
57.5 Ft.  
55 Ft.  
One (1)  
None  
One (1)  
None  
Four (4)  
One (1)  
None  
***Five (5)  
***Five (5)  
***Six (6)  
One (1)  
None  
52.5 Ft.  
50 Ft.  
** One (1) 90° elbow is equal to two (2) 45° elbows.  
*** It is not recommended that more than (4) 90° elbows be used, or a combination of three (3) 90° and two (2) 45° elbows, but as long  
as the total length is less than in the chart above, the vent system is acceptable.  
Note: For the two (2) and three (3) inch diameter vent pipes, one (1) 90° elbow is approximately the same as five (5) feet of the same diameter straight pipe.  
condense in the vent piping. If this occurs, then adequate  
means of draining and disposing of the condensate needs to  
INSTALLATION OF VENT SYSTEM  
be m
(Refer to Figures 3, 4, 5, 7 and 8 as guides).  
1. Plan the route of the vent system. Layout the total vent system  
to use minimum of vent pipe and elbows. The vent piping  
should be vented downward away from the blower per the  
required codes. If the vent piping is sloped level or upwards  
away from the blower, then adequate means for draining and  
disposing of the condensate needs to be made by the installer.  
2. Refer to table above for allowable vent lengths. Nonmetallic  
vent piping may be used if it has a “Heat Deflection  
Temperature” (HDT@66psi) of at least 157 degrees F. Some  
typical nonmetallic vent materials meeting this requirement  
are PVC to ASTM D2665, CPVC to ASTM D2846, and ABS to  
ASTM D2261. The cement used should be as recommended  
by the vent pipe manufacturer. The vent terminal provided is  
PVC to ASTM D2665 and is a standard 2 inch tee or a 3 inch  
45 degree ell. If a material other than PVC is used for venting,  
then an equivalent fitting of that material may be substituted if  
the screen in the PVC terminal is removed and inserted into  
the new fitting. For water heaters installed in locations with  
high ambient temperatures (above 100 degrees F), it is  
recommended that CPVC or ABS be used.  
FIGURE7  
The vent pipe may be installed with a slight downward slope  
to drain condensate away from the blower. The pipe may  
slope 1/4 inch per five feet of pipe but not more than  
1 1/2 inches in the total vent length.  
3. See the instructions on pages 10 through 12 for the proper  
method of cutting and cementing the PVC pipe and fittings.  
4. The vent piping should be connected to the blower with a  
rubber adapter and secured with hose clamps. The adapter  
and clamps are provided with the heater.  
The vent pipe should be properly supported and have  
supports located no further apart than 5 feet on vertical runs  
and 3 feet on horizontal runs. All pipe and fittings should be  
joined by the proper procedures discussed on pages 10 and  
11 under the heading: VENT PIPE PREPARATION.  
5. Even though the flue gas temperature leaving the blower is  
between 140°F and 175°F, some installations will have water  
9
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C. Know the reputation of your manufacturer and their  
products.  
VERTICAL VENT THROUGH ROOF  
This unit is approved for venting through the roof with the type  
vent terminal that is included with the unit. A proper flashing or  
“BOOT” should be used to seal the pipe where it exits the roof.  
D. Know your own qualifications or those of your contractor.  
The solvent welding technique of joining PVC and CPVC  
pipe is a specialized skill just as any other pipe fitting  
technique.  
The total vent system should not exceed that which is specified  
in the table on page 9.  
E. Closely supervise the installation and inspect the finished  
job before start-up.  
All of the pipe should be secured as per the instructions in the  
“INSTALLATION OF VENT SYSTEM” on page 9.  
F. Contact the manufacturer, supplier, or competent  
consulting agency if you have any questions about the  
application or installation of PVC and CPVC pipe.  
VERTICAL VENT TERMINATION  
RESTRICTIONS  
G. Take the time and effort to do a professional job. Shortcuts  
will only cause you problems and delays in start-up. By  
far, the majority of failures in PVC and CPVC systems  
are the result of shortcuts and/or improper joining  
techniques.  
1. Minimum of twelve (12) inches above the roof or twelve (12)  
inches above the anticipated snow level. Provide proper  
support for all pipe protruding through the roof.  
2. SELECTION OF MATERIALS  
Cutting Device - Saw or Pipe Cutter  
Deburring Tool, Knife, File, or Beveling Machine (2" and above)  
Brush - Pure Bristle  
Rag - Cotton (Not Synthetic)  
Primer and Cleaner  
Solvent Cement - PVC for PVC Components and CPVC for  
CPVC Components  
Containers - Metal or Glass to hold Primer and Cement. Select  
the type of PVC or CPVC materials to be used on the basis of  
their application with respect to chemical resistance, pressure  
rating, temperature characteristics, etc.  
Insertion Tool - Helpful for larger diameter pipe and fittings  
(6" and above).  
PRIMER  
It is recommended that Tetrahydrofuran (THF) be used to prepare  
the surfaces of pipe and fittings for solvent welding. Do not use  
water, rags, gasoline or any other substitutes for cleaning PVC  
or CPVC surfaces. A chemical cleaner such as MEK may be  
used.  
CEMENT  
The cement should be a bodied cement of approximately 500 to  
1600 centipoise viscosity containing 10-20% (by weight) virgin  
PVC material solvated with tetrahydrofuran (THF). Small  
quantities of dimethyl formamide (DMF) may be included to act  
as a retarding agent to extend curing time. Select the proper  
cement; Schedule 40 cement should be used for Schedule 40  
pipe. Never use all-purpose cements, commercial glues and  
adhesives or ABS cement to join PVC or CPVC pipe and fittings.  
FIGURE8  
2. Four (4) feet from or one (1) foot above any gable, dormer, or  
other roof structure with access to interior of building (i.e.-  
vent, window etc.).  
3. Three (3) feet above any forced air inlet located within ten (10)  
feet.  
SAFETY PRECAUTION: PRIMERS AND CEMENTS ARE  
EXTREMELY FLAMMABLE, AND MUST NOT BE STORED OR  
USED NEAR HEAT OR OPEN FLAME. ALSO, USE ONLY IN A  
WELL-VENTILATEDAREA.  
VENT PIPE PREPARATION  
1. INITIALPREPARATION  
APPLICATORS  
A. Make sure the solvent cement you are planning to use is  
designed for the specific application you are attempting.  
Select a suitable pure bristle type paint brush. Use a proper  
width brush or roller to apply the primer and cement (see chart  
below). Speedy application of cement is important due to its fast  
drying characteristics. IMPORTANT NOTE: A dauber type  
applicator should only be used on pipe sizes 2" and below. For  
larger diameter pipe, a brush or roller must be used.  
B. Know the physical and chemical characteristics and  
limitations of the PVC and CPVC piping materials that  
you are about to use.  
10  
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D. Inspection, cleaning, priming  
RECOMMENDED BRUSH* SIZE FOR PRIMER  
AND CEMENTAPPLICATIONS  
Visually inspect the inside of the pipe and fitting sockets and  
remove all dirt, grease or moisture with a clean dry rag. If  
wiping fails to clean the surfaces, a chemical cleaner must  
be used. Check for possible damage such as splits or cracks  
and replace if necessary.  
Nominal Pipe  
Size Brush Width  
(INS.)  
(IPS)  
2
3
1-1/2  
1-1/2 - 2-1/2  
Depth-of-entry  
*USE ONLYNATURAL BRISTLE  
Marking the depth of entry is a way to check if the pipe has  
reached the bottom of the fitting socket in Step F. Measure  
the fitting depth and mark this distance on the pipe O.D. You  
may want to add several inches to the distance and make a  
second mark as the primer and cement will most likely destroy  
your first one.  
3. MAKING THE JOINT  
A. Cutting  
Pipe must be squarely cut to allow for the proper interfacing  
of the pipe end and the fitting socket bottom. This can be  
accomplished with a miter box saw or wheel type cutter. Wheel  
type cutters are not generally recommended for larger  
diameters since they tend to flare the corner of the pipe end.  
If this type of cutter is used, the flare on the end must be  
completely removed.  
Apply primer to the surface of the pipe and fitting socket with  
a natural bristle brush (see chart on page 11). This process  
softens and prepares the PVC or CPVC for the solvent  
cementing step. Move quickly and without hesitation to the  
cementing procedure while the surfaces are still wet with  
primer.  
NOTE: Power saws should be specifically designed to cut plastic  
pipe.  
E. Application of solvent cement  
• Apply the solvent cement evenly and quickly around the  
outside of the pipe at a width a little greater than the depth  
of the fitting socket.  
• Apply a light coat of cement evenly around the inside of the  
fitting socket. Avoid puddling.  
• Apply a second coat of cement to the pipe end.  
NOTE: Cans of cement and primer should be closed at all times  
when not in use to prevent evaporation of chemicals and  
hardening of cement. They are also very flammable and should  
be kept away from heat or flame.  
STEP A  
B. Deburring  
Use a knife, plastic pipe deburring tool, or file to remove burrs  
from the end of small diameter pipe. Be sure to remove all  
burrs from around the inside as well as the outside of the  
pipe. A slight chamfer (bevel) of about 10°-15° should be  
added to the end to permit easier insertion of the pipe into the  
end of the fitting. Failure to chamfer the edge of the pipe may  
remove cement from the fitting socket, causing the joint to  
leak.  
STEP E  
F. Joint assembly  
Working quickly, insert the pipe into the fitting socket bottom  
and give the pipe or fitting a 1/4" turn to evenly distribute the  
cement. Do not continue to rotate the pipe after it has hit the  
bottom of the fitting socket. A good joint will have sufficient  
cement to make a bead all the way around the outside of the  
fitting hub. The fitting will have a tendency to slide back while  
the cement is still wet so hold the joint together for about 15  
seconds.  
STEP B  
C. Test dry fit of the joint  
Tapered fitting sockets are designed so that an interfaced fit  
should occur when the pipe is inserted about 1/3 to 2/3 of the  
way into the socket. Occasionally, when pipe fitting  
dimensions are at the tolerance extremes, it will be possible  
to fully insert dry pipe to the bottom of the fitting socket. When  
this happens, a sufficient quantity of cement must be applied  
to the joint to fill the gap between the pipe and fitting. The gap  
must be filled to obtain a strong, leak-free joint.  
STEP F  
11  
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G. Cleanup and joint movement  
Remove all excess cement from around the pipe and fitting  
with a dry cotton rag. This must be done while the cement is  
still soft.  
The joint should not be disturbed immediately after the  
cementing procedure, and sufficient time should be allowed  
for proper curing of the joint. Exact drying time is difficult to  
predict because it depends on variables such as temperature,  
humidity and cement integrity. For more specific information,  
you should contact your solvent cement manufacturer.  
OPERATION  
WARNING  
NEVER OPERATE THE HEATER WITHOUT FIRST BEING  
CERTAIN IT IS FILLED WITH WATER AND A TEMPERATURE  
AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF  
VALVE OPENING OF THE HEATER. DO NOT ATTEMPT TO  
OPERATE HEATER WITH COLD WATER INLET VALVE CLOSED.  
STEP G  
TO OPERATE THE WATER HEATER  
T & P VALVE and PIPE INSULATION  
FILLING  
Remove insulation for T & P Valve and pipe connections from  
carton.  
1. Close the heater drain valve by turning handle clockwise  
Fig. 1 (T)  
2. Open a nearby hot water faucet to permit the air in the system  
to escape.  
Fit pipe insulation over the in-coming cold water line and the hot  
water line. Make sure that the insulation is against the top cover  
of the heater.  
3. Fully open the cold water inlet pipe valve (allowing the heater  
and piping to be filled. Fig. 1(M)  
4. Close the hot water faucet as water starts to flow from the  
faucet.  
Fit T & P valve insulation over valve. Make sure that the insulation  
does not interfere with the lever of the T & P valve.  
5. The heater is ready to be operated.  
Secure all insulation using tape.  
12  
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FOR YOUR SAFETY READ BEFORE OPERATING  
WARNING: If you do not follow these instructions exactly, a fire or  
explosion may result causing property damage, personal injury or loss  
of life.  
BEFORE OPERATING: ENTIRE SYSTEM MUST BE FILLED WITH WATERANDAIR PURGED FROMALL LINES.  
A. This appliance does not have a pilot. It is equipped  
with an ignition device which automatically lights  
the burner. Do NOT try to light the burner by hand.  
B. BEFORE OPERATING smell all around the appliance  
area for gas. Be sure to smell next to the floor  
because some gas is heavier than air and will settle  
on the floor.  
If you cannot reach your gas supplier, call the fire  
department.  
C. Use only your hand to push in the gas control  
buttons. Never use tools. If the control buttons will  
not push in, don’t try to repair them, call a qualified  
service technician. Force or attempted repair may  
result in a fire or explosion.  
WHAT TO DO IF YOU SMELL GAS:  
D. Do not use this appliance if any part has been  
under water. Immediately contact a qualified  
installer or service agency to replace a flooded  
water heater. Do not attempt to repair the unit! It  
must be replaced!  
Do not try to light any appliance.  
Do not touch any electric 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.  
OPERATING INSTRUCTIONS  
4. This appliance is equipped with a device which  
automatically lights the burner.  
DO NOT TRY TO LIGHT THE BURNER BY HAND.  
5. Wait five (5) minutes to  
If you then smell gas,  
clear out any gas.  
STOP! Follow “B”  
in the safety information above on this label. If  
you don’t smell gas, go to the next step.  
6. Turn on all electrical power to the appliance.  
7. Set thermostat to desired setting by first pressing  
the COOLER  
together and holding for 1 second. Then press  
the HOTTER button.  
and HOTTER  
buttons  
8. If the appliance will not operate, follow the  
instructions “TO TURN OFF GAS TOAPPLIANCE”  
and call your technician or gas supplier.  
1.  
STOP! Read the safety information above,  
on this label.  
9. WATER TEMPERATUREADJUSTMENT  
is approximately 120°F.  
2. Set the thermostat to the lowest setting by first  
pressing the COOLER and HOTTER buttons  
together and holding for 1 second. Then press the  
CAUTION: Hotter water increases the risk  
of scald injury. Consult the instruction  
manual before changing temperature.  
COOLER  
appears.  
button until the WARM indicator light  
WARNING: TURN OFFALL ELECTRIC  
POWER BEFORE SERVICING  
3. Turn the “ON/OFF” switch on the blower control box  
to the “OFF” position.  
TO TURN OFF GAS TOAPPLIANCE  
1. Set thermostat to the lowest setting by first pressing the COOLER  
and HOTTER  
buttons together  
and holding for 1 second. Then press the COOLER button until the WARM indicator light appears.  
2. Set the ON/OFF switch on the blower control box to the “OFF” position.  
3. Turn off all electric power to the appliance if service is to be performed.  
13  
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To avoid any unintentional changes in water temperature settings,  
the control has a tamper resistant feature for changing the  
temperature setting. To change the temperature setting follow  
these instructions:  
TEMPERATURE REGULATION  
1. “Wake Up” the temperature indicators by holding down both  
“COOLER” and “HOTTER” temperature adjustment buttons  
at the same time for one second (See Figure 9). One or two of  
the temperature indicators will light up. These indicators will  
only remain on for 30 seconds if no further buttons are  
pressed. After 30 seconds the control will go back to “Sleep”  
mode.  
2. Release both of the temperature adjustment buttons.  
A. To decrease the temperature press and release the  
“COOLER” button until the desired setting is reached.  
WARNING  
B. To increase the temperature press and release the  
“HOTTER” button until the desired setting is reached.  
THIS WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE  
THERMOSTAT TO CONTROL WATER TEMPERATURE. HOT  
WATER TEMPERATURES REQUIRED FOR AUTOMATIC  
DISHWASHER AND LAUNDRY USE CAN CAUSE PAINFUL  
SCALDING WITH POSSIBLE SERIOUS AND PERMANENT  
INJURY. THE TEMPERATURE AT WHICH INJURY OCCURS  
VARIES WITH THE PERSON'S AGE AND THE TIME OF  
EXPOSURE. THE SLOWER RESPONSE TIME OF CHILDREN,  
AGED OR DISABLED PERSONS INCREASES THE HAZARDS  
TO THEM. NEVER ALLOW SMALL CHILDREN TO USE A HOT  
WATER TAP OR TO DRAW THEIR OWN BATH WATER. NEVER  
LEAVE A CHILD OR DISABLED PERSON UNATTENDED IN A  
BATHTUB OR SHOWER.  
NOTE: Holding down the button will not continue to lower or  
raise the temperature setting. The button must be pressed and  
released for each temperature change desired.  
SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL  
TO SHUTOFF, TURN OFF THE MANUALGAS CONTROL VALVE  
TO THE APPLIANCE. SEE FIGURE 1(G).  
TEMPERATURE INDICATORS  
THE WATER HEATER SHOULD BE LOCATED IN AN AREA  
WHERE THE GENERALPUBLIC DOES NOT HAVEACCESS. IF  
A SUITABLE AREA IS NOT AVAILABLE, A COVER SHOULD BE  
INSTALLED OVER THE THERMOSTAT TO PREVENT  
TAMPERING.  
It is recommended that lower water temperatures be used to  
avoid the risk of scalding. It is further recommended, in all cases,  
that the water temperature be set for the lowest temperature  
which satisfies your hot water needs. This will also provide the  
most energy efficient operation of the water heater. The water  
temperature setting was factory set at the lowest temperature;  
Pressing the “COOLER”  
pressing the “HOTTER”  
button decreases temperature and  
button increases the temperature.  
SETTING THE WATER HEATER TEMPERATURE AT 120°F  
(APPROX. " " MARK ON TEMPERATURE SETTING OF GAS  
VALVE) WILL REDUCE THE RISK OF SCALDS. Some states  
require settings at specific lower temperatures.  
TEMPERATUREADJUSTMENT BUTTONS  
Time to Produce  
Figure 9 shows the approximate water temperatures produced  
at various thermostat settings. Short repeated heating cycles  
caused by small hot water uses can cause temperatures at the  
point of use to exceed the thermostat setting by up to 30°F (17ºC).  
If you experience this type of use you should consider using  
lower temperature settings to reduce scald hazards.  
Display  
2nd & 3rd Degree  
Temperature Setting  
C - Flashing = approx. 160°F  
C = approx. 150°F  
A B C Burns on Adult Skin  
About 1/2 seconds  
About 1-1/2 seconds  
Less than 5 seconds  
About 30 seconds  
B = approx. 140°F  
Valves for reducing the point-of-use temperature by mixing cold  
and hot water are available. See figure 2. Also available are  
inexpensive devices that attach to faucets to limit hot water  
temperatures. Contact a licensed plumber or the local plumbing  
authority.  
A = approx. 130°F  
= approx. 120°F  
More than 5 minutes  
- - - - - - - - - - - - - - -  
WARM = approx. 80°F  
FIGURE9  
14  
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WATER HEATING IGNITION SEQUENCE  
CONTROLSEQUENCE - HOT SURFACE DIRECT IGNITION  
(Make sure gas and electric power are connected properly)  
Pre-purge  
5
seconds.  
HSI Warm-up  
20 seconds.  
1) The ignition control module is powered and monitors the  
system, waiting for a call for heat from the thermostat.  
Ignition Activation Period  
Flame Recognition Period  
Ignition Trial  
Interpurge  
Post-purge  
4
1
4
5
5
2
1
seconds.  
second.  
seconds.  
seconds.  
seconds.  
2) The thermostat calls for heat by reading a resistance value  
within a given range directly proportional to water  
temperature.  
Retries  
Reset from Lockout  
Flame Sensing (Nominal)  
HSI Off/Run Mode  
hr.  
3) The control Module:  
a) Checks the pressure switch for an open circuit.  
b) Energizes the blower.  
4.0µV DC  
c) Checks the pressure switch for a closed circuit to prove  
draft.  
d) Sends line voltage to the hot surface igniter with a  
20 second warm up period.  
e) Opens the gas valve and checks the sensing rod for  
flame.  
MAINTENANCE  
WARNING  
DISCONNECT FROM ELECTRICAL SUPPLY BEFORE  
SERVICING UNIT.  
4) The burner heats the water to the desired thermostat setting.  
a) The resistance in the thermostat rises to the value  
selected by the temperature setting.  
b) The control module closes the gas valve and 5 seconds  
later, removes power from the blower.  
FOR YOUR SAFETY, WATER HEATER SERVICE SHOULD BE  
PERFORMED ONLY BYAQUALIFIED SERVICE TECHNICIAN.  
READ THE GENERALSAFETY INFORMATION SECTION FIRST.  
5) Cycle is completed.  
USERS OF THIS APPLIANCE SHOULD BE AWARE THAT GAS  
COMPONENTS WEAR OUT OVER A PERIOD OF TIME. THE  
GAS CARRYING COMPONENTS OFTHISAPPLIANCE SHOULD  
BE INSPECTED FOR PROPER OPERATION PERIODICALLY BY  
A QUALIFIED SERVICE TECHNICIAN.  
MAIN BURNER -FIG. 1  
Check main burner every 12 months for proper flame  
characteristics. This is done by removing door(s) on heater, fig.  
1. The main burner should provide complete combustion of  
gas; ignite rapidly; give reasonably quiet operation; cause no  
excessive flame lifting from burner ports. Make sure that the  
flow of combustion and ventilation air is not blocked.  
If proper flame characteristics are not evident, check for  
accumulation of lint or other foreign material that restricts or  
blocks the air openings in the heater or burner. Also check AIR  
REQUIREMENTS.  
WARNING  
SOOT BUILD-UP INDICATES A PROBLEM THAT REQUIRES  
CORRECTION BEFORE FURTHER USE. Consult with a qualified  
service technician.  
Should the main burner or burner air openings require cleaning,  
turn the blower switch to “OFF” position and allow the burner to  
cool. Remove the burner and clean with a soft brush. Clean  
main burner orifice with a suitable soft material.  
HIGH TEMPERATURE LIMIT SWITCH  
(Single-Use Type Energy Cut Off)  
The thermostat has a built-in limit switch which will actuate in  
case of excessive water temperatures. The heater cannot be  
relit until the Gas Control Valve is replaced It is important that a  
serviceman be called to determine the reason for limit operation  
and thus avoid repeated thermostat replacement. Lower the  
temperature adjustment setting on new control.  
FIGURE 10  
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Turn off the gas and cold water inlet valve to the heater.  
Open a nearby hot water faucet and the heater drain valve.  
VENTING SYSTEM  
HAVE VENTING SYSTEM CHECKED EVERY SIX MONTHS FOR  
OBSTRUCTIONSAND/OR DETERIORATION IN VENT PIPING.  
BE CAREFUL TO GRASP THE DRAIN VALVE HANDLE SO  
THAT THE HAND IS NOT EXPOSED TO HOT WATER. IF  
DESIRED, A HOSE MAY BE CONNECTED TO THE DRAIN  
VALVETO CARRYTHE WATERAWAY.  
BLOWER ASSEMBLY MAINTENANCE  
CAUTION  
DANGER: The water MAY BE HOT.  
The air flow restrictor screen on the inlet side of the blower unit  
should be checked periodically for any accumulation of dust and  
lint. Any build up of dirt in the screen can result in insufficient  
dilution air and excessive vent temperatures that could cause  
heat damage to the PVC pipe or cause the thermal switch to  
safely shut the unit down. Should this happen, the build up of the  
lint/dirt needs to be cleaned.  
The drain valve must be left open during the shutdown period.  
To restart heater, refer to the FILLING instructions under  
OPERATION.  
Periodically open the drain valve and allow the water to run until  
it flows clean. This will help prevent sediment build-up in the  
tank.  
The venter must be inspected four times a year. Points of  
inspection are:  
It is normal for lime and scale deposits to form within the tank.  
Such deposits will not be removed by periodic draining. It is  
necessary to chemically delime the affected parts in water areas  
where such deposits are encountered. Deliming information  
can be obtained from State Water Heaters, 500 Lindahl Parkway,  
Ashland City, TN 37015.  
1. MOTOR - Motor must rotate freely.  
2. WHEEL - Wheel must be clean of soot, ash, lint or any other  
coating which inhibits either rotation or air flow. Remove all  
foreign material from vent system before operating.  
3. The pressure switch part inside the power venter must be  
open and free from deposits of soot, carbon, etc.  
CONDENSATION  
Water vapor can condense on the cooler surfaces of the tank  
forming droplets, these drip into the fire or run out on the floor.  
This is common at the time of startup after installation, during  
periods of time when incoming water is very cold, or the heater  
may be undersized for the requirements.  
For safety and satisfactory operation it is recommended that the  
heater be checked once a year by a competent service person.  
T & P VALVE  
At least once a year, the temperature and pressure relief valve  
must be checked to ensure that it is in operating condition. Lift  
the lever at the top of the valve several times until the valve seats  
properly and operates freely.  
Droplets from the bottom of the flue may be due to corrosive  
combustion products or improper vent. Check with your dealer  
for more information.  
CATHODIC PROTECTION - ANODE (FIG. 1)  
DANGER  
THE WATER PASSING OUT OF THE VALVE DURING THIS  
CHECKING OPERATION MAY BE EXTREMELY HOT. AVOID  
CONTACT AND DISCHARGE SAFELY TO PREVENT WATER  
DAMAGE.  
The anode rod is used to protect the tank from corrosion. Most  
hot water tanks are equipped with an anode rod. The submerged  
rod sacrifices itself to protect the tank. Instead of corroding the  
tank, water ions attack and eat away the anode rod. This does  
not affect the water's taste or color. The rod must be maintained  
to keep the tank in operating condition.  
If temperature and pressure relief valve on the appliance  
discharges periodically, this may be due to thermal expansion  
in a closed water system. Contact the water supplier or local  
plumbing inspector on how to correct this situation. DO NOT  
PLUG the temperature and pressure relief valve.  
Anode deterioration depends on water conductivity, not  
necessarily water condition. A corroded or pitted anode rod  
indicates high water conductivity and should be checked and/or  
replaced more often than an anode rod that appears to be intact.  
Replacement of a depleted anode rod can extend the life of your  
water heater. Inspection should be conducted by a qualified  
technician, and at a minimum should be checked annually after  
the warranty period.  
DRAINING (T)-FIG. 1  
If the heater is to be shut off and exposed to freezing  
temperatures, it must be drained. Water, if left in the tank and  
allowed to freeze, will damage the heater.  
16  
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WARNING: DO NOT BY-PASSANY CONTROLS TO MAKE HEATER OPERATE.  
OPERATE ONLYAS WIRED FROM FACTORY.  
TROUBLE SHOOTING  
Please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician.  
Read the GENERAL SAFETY INFORMATION section first.  
PROBLEM  
An open earth ground circuit to the  
ignition system.  
SOLUTION  
1. Check that the earth ground connection is  
properly connected.  
LED STATUS  
A B C  
2. Check that the ground conductor on the  
water heater is properly connected.  
Wiring error or a high resistance to  
earth ground.  
1. Check for proper connection of line  
neutral and hot wires.  
A B C  
2. Check that the water heater is securely  
connected to earth ground.  
Pressure switch remained closed longer  
than 5 seconds after the call for  
heat began.  
1. Pressure switch wiring is incorrect.  
2. Replace pressure switch.  
A B C  
A B C  
A B C  
Pressure switch remained open longer  
than 5 seconds after the combustion  
blower was energized.  
1. Pressure switch wiring is incorrect.  
2. Pressure switch tubing not connected  
correctly.  
3. Air intake or exhaust obstructed.  
Error in the hot surface ignitor circuit.  
System in lockout.  
1. Check that all wiring is correct and secure.  
2. Replace hot surface ignitor.  
1. Gas supply is off or too low to operate.  
2. Hot surface ignitor not positioned  
correctly.  
A B C  
3. Low voltage to the water heater.  
4. Electric polarity to unit is incorrect - test  
and correct.  
Problem in the gas valve driver circuit.  
Problem with the internal circuit.  
Problem with the internal circuit.  
1. Turn power to the water heater off for  
10 seconds and the back on.  
2. Replace gas control valve.  
A B C  
1. Turn power to the water heater off for  
10 seconds and then back on.  
2. Replace gas control valve.  
A B C  
A B C  
1. Turn power to the water heater off for  
10 seconds and then back on.  
2. Replace gas control valve.  
A B C  
A B C  
Flame signal sensed out of  
proper sequence.  
1. Replace gas control valve.  
ECO activated.  
1. Replace gas control valve.  
One of the temperature adjust  
buttons stuck closed.  
1. Press and release each of the buttons  
once.  
2. Replace gas control valve.  
A B C  
A B C  
Water temperature sensor is  
either open or short circuited.  
1. Check that all wiring is correct and secure.  
2. Replace gas control valve.  
17  
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TROUBLE SHOOTING (Continued)  
CAUSE  
PROBLEM  
SOLUTION  
1) Blower will not run.  
A) “ON/OFF” control switch turned off.  
B) Blower unplugged.  
C) No power at outlet.  
Turn switch to the “ON” position.  
Plug blower back into 115 Vac. outlet.  
Repair service to outlet.  
D) Thermostat defective.  
E) Control harness defective.  
F) High limit control circuit open.  
G) Blower motor defective.  
Thermostat problems.  
Replace thermostat.  
Replace control harness.  
Replace thermostat.  
NOTENOUGH  
HOT WATER  
Replace Blower Assembly.  
A) Thermostat set too low.  
B) Thermostat or ECO defective.  
Others  
Turn temperature control higher.  
Replace thermostat.  
A) Heater undersized.  
Reduce hot water use.  
B) Low gas pressure.  
Contact dealer.  
C) Incoming water is unusually cold.  
D) Leaking hot water pipes or fixtures.  
A) Defective air flow restrictor.  
Allow more time for heater to reheat.  
Have plumber check and repair leaks.  
Take unit out of service immediately, call a  
State Water Heaters service representative.  
Proper dilution air must be provided for  
combustion and dilution of flue temp.  
Refer to “INSTALLATION” section.  
Supply air is too hot. Check for heat sources  
around and/or blockage of dilution air intake.  
Install correct orifice.  
B) Not enough dilution air to mix with  
flue gases.  
VENT PIPE TOO HOT  
(ABOVE 170°F)  
C) Dilution air too hot for mixing with  
flue gases.  
D) Wrong burner orifice.  
A) Dirt in burner ports  
Turn off heater and gas, clean burner head.  
Check dilution air intake, exhaust venting, and  
air openings in bottom base pan for  
obstructions or blockage.  
B) Combustion air path restricted.  
YELLOW FLAME  
C) Not enough dilution air for proper  
combustion.  
Check dilution air intake for obstructions  
or blockage.  
A) Water on the floor under heater.  
B) Water dripping from blower assembly.  
See “CONDENSATION” section.  
Provide drip “TEE” to catch condensation,  
see figure 1.  
CONDENSATION  
WATER LEAKS  
Improperly sealed, hot or cold supply  
connections, relief valve, drain valve  
or thermostat threads.  
Tighten threaded connections.  
Leakage from other appliances or water  
water lines.  
Inspect other appliances near water heater.  
Condensation of flue products.  
Thermal expansion in closed water  
system.  
Refer to “CONDENSATION” section.  
Install thermal expansion tank (DO NOT plug  
T&P valve).  
LEAKING T&P  
Improperly seated valve.  
Check relief valve for proper operation  
(DO NOT plug T&P valve).  
HOT WATER ODORS  
(Refer to CATHODIC  
PROTECTION  
High sulfate or mineral content in  
water supply.  
Bacteria in water supply.  
Drain and flush heater thoroughly then refill.  
Chlorinate water supply.  
WATER TOO HOT  
WATER HEATER SOUNDS  
SIZZLING-RUMBLING  
Thermostat set too high.  
Condensation dripping on burner.  
Sediment at bottom of heater tank.  
Refer to HIGH TEMPERATURE REGULATION.  
Refer to CONDENSATION above.  
Clean sediment from tank. Refer to DRAINING  
instruction in Maintenance section of manual.  
Refer to AIR REQUIREMENTS on page 4.  
Test polarity and correct.  
SOOTING  
Improper combustion.  
Outlet polarity is reversed.  
HEATERLIGHTS  
BUT GOES OUT  
IN 4-5 SECONDS  
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LIMITED RESIDENTIAL GAS WARRANTY  
THIS WARRANTY ISAPPLICABLE TO THE ORIGINAL OWNER  
a. Labor charges for service, removal, or reinstallation of the  
ONLY. If the glass lined tank in this water heater shall prove upon  
examination by State Water Heaters (the warrantor) to have leaked  
during the warranty period in normal residential use, due to  
natural corrosion from potable water therein, the warrantor will  
furnish the ORIGINAL OWNER a replacement State water heater  
of equivalent size and current model, or a replacement part for  
any component part which fails in normal use, in accordance  
with the warranty terms and conditions specified below. THE  
STATE WATER HEATER REPLACEMENT MODELOR PARTWILL  
BE WARRANTED FOR ONLY THE UNEXPIRED PORTION OF  
THE ORIGINAL WARRANTY. The warranty period will be  
determined by the original installation date of the water heater.  
water heater or part thereof.  
b. Shipping and delivery charges for forwarding the new water  
heater or replacement part from the nearest distributor and  
returning the claimed defective heater or part to such distributor  
except in the state of California where such charges are the  
manufacturer’s responsibility.  
c. All cost necessary or incidental for handling and  
administrative charges, and for any materials and/or permits  
required for installation of the replacement heater or part.  
LIMITATION ON IMPLIED WARRANTIES  
Implied warranties, including any warranty of merchantability  
PROOF-OF-PURCHASEAND PROOF-OF-INSTALLATIONARE imposed on the sale of this heater under state law are limited to  
NECESSARYTO VALIDATE THIS WARRANTY. This warranty is  
not transferable and applies to models listed in Table 1.  
one year duration for the heater or any of its parts. Some states  
do not allow limitations on how long an implied warranty lasts,  
so the above limitations may not apply to you.  
TABLE 1  
WARRANTYPERIOD  
CLAIM PROCEDURE  
MODEL  
PR640  
PR650  
TANK1  
6 YEARS  
6 YEARS  
PARTS2  
2 YEARS  
2 YEARS  
Any claim under this warranty should be initiated with the dealer  
who sold the heater, or with any other dealer handling the  
warrantor’s products. If this is not practical, the owner should  
contact: State Water Heaters, 500 Lindahl Parkway, Ashland City,  
TN 37015.  
When the water heater has been used for other than single  
family residential application: 1. The tank warranty shall be  
reduced to 1 year. 2. The parts warranty shall be reduced to 1  
year for all models. Returned parts which meet any of the  
following conditions are not covered by this warranty: 1) improper  
installation or removal; 2) damaged by other than normal wear;  
3) replaced for cosmetic purposes; or 4) returned with defaced  
date codes.  
The warrantor will only honor replacement with identical or  
similar water heater or parts thereof which are manufactured or  
distributed by the warrantor.  
Dealer replacements are made subject to in-warranty validation  
by warrantor.  
PROOF-OF-PURCHASE AND PROOF-OF-INSTALLATION  
DATES ARE REQUIRED TO SUPPORT WARRANTY FOR  
CLAIM FROM ORIGINAL OWNER. THIS FORM DOES NOT  
CONSTITUTE PROOF-OF-PURCHASE OR PROOF-OF-  
INSTALLATION.  
CONDITIONS AND EXCEPTIONS  
This warranty shall apply only when the water heater is installed  
and operated in accordance with: 1) all local fire codes and  
plumbing codes, ordinances and regulations; 2) the printed  
instructions provided with it; 3) good industry practices; and 4)  
proper safety practices such as but not limited to a properly  
sized drain pan if installed in an area where leakage from  
connections of the tank would result in damage to the area  
adjacent to the heater. In addition, a new temperature and  
pressure relief valve, certified by the Canadian Standards  
Association must have been properly installed and piped to the  
nearest drain.  
DISCLAIMERS  
NO EXPRESS WARRANTY HAS BEEN OR WILL BE MADE IN  
BEHALF OF THE WARRANTOR WITH RESPECT TO THE  
MERCHANTABILITY OF THE HEATER OR THE INSTALLATION,  
OPERATION, REPAIR OR REPLACEMENT OF THE HEATER OR  
PARTS. THE WARRANTOR SHALL NOT BE RESPONSIBLE  
FOR WATER DAMAGE, LOSS OF USE OF THE UNIT,  
INCONVENIENCE, LOSS OR DAMAGE TO PERSONAL  
PROPERTY, OR OTHER CONSEQUENTIAL DAMAGE. THE  
WARRANTOR SHALL NOT BE LIABLE BY VIRTUE OF THIS  
WARRANTYOR OTHERWISE FOR DAMAGE TOANY PERSONS  
OR PROPERTY, WHETHER DIRECT OR INDIRECT, AND  
WHETHER ARISING IN CONTRACT OR IN TORT.  
This warranty shall apply only when the heater is:  
owned by the original purchaser;  
used at temperatures not exceeding the maximum calibrated  
setting of its thermostat;  
not subjected to excessive water pressure fluctuations and  
not subject to an operating pressure greater than 150 P.S.I.;  
filled with potable water, free to circulate at all times and with  
the tank free of damaging water sediment or scale deposits;  
used in a non-corrosive and non-contaminated atmosphere;  
used with factory approved anode(s) installed;  
in its original installation location;  
in the United States and its territories or possessions;  
sized in accordance with proper sizing techniques for  
residential water heaters;  
Some states do not allow the limitation or exclusion of incidental  
or consequential damages, so the above limitation or exclusion  
may not apply to you.  
This warranty gives you specific legal rights, and you may also  
have other rights which vary from state to state.  
bearing a rating plate which has not been altered, defaced or  
removed except as required by the warrantor;  
used in an open system or in a closed system with a properly  
sized and installed thermal expansion tank;  
fired at the factory rated input using the fuel stated in the face  
of the rating plate;  
operated with the inner and outer combustion chamber doors  
in place;  
maintained in accordance with the instructions printed in the  
manual included with the heater.  
Fill out and keep with water heater.  
IMPORTANT INFORMATION  
Model Number____________________________________________  
Serial Number_____________________________________________  
Installation Information:  
Date Installed _____________________________________________  
Company’s Name _________________________________________  
Street or P.O. Box _________________________________________  
City, State, and Zip Code ___________________________________  
Phone Number _______________Plumber’s Name_______________  
Any accident to the water heater or any part thereof (including  
freezing, fire, floods, or lightning), any misuse, abuse or alteration  
of it, any operation of it in a modified form, or any attempt to  
repair tank leaks or parts, will void this warranty.  
SERVICE AND LABOR RESPONSIBILITY  
UNDER THIS LIMITED WARRANTY, THE WARRANTOR WILL  
PROVIDE ONLYA REPLACEMENT WATER HEATER OR PART  
THEREOF. THE OWNER IS RESPONSIBLE FOR ALL OTHER  
COSTS. Such costs may include but are not limited to:  
19  
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500 LINDAHLPARKWAY  
ASHLAND CITY, TN 37015  
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