Honeywell Water Heater 238 47969 00A User Manual

DIRECT VENT GAS WATER HEATER  
A Spanish language version of these instructions is available by contacting the  
company listed on the rating plate.  
La versión espãnola de estas instrucciones se puede obtener al escribirle a la  
fábrica cuyo nombre aparece en la placa de especificaciones.  
INSTALLATION & OPERATING INSTRUCTION MANUAL  
WARNING: If the information in these instructions is not  
followed exactly, a fire or explosion may result causing  
property damage, personal injury or death.  
FOR YOUR SAFETY  
Do not store or use gasoline or other flammable,  
combustible, or corrosive vapors and liquids in the vicinity  
of this or any other appliance.  
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.  
Installation and service must be performed by a qualified  
installer, service agency or the gas supplier.  
For your family’s comfort, safety and convenience, it is recommended  
this water heater be installed and serviced by a plumbing professional.  
238-47969-00A REV 6/09  
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TABLE OF CONTENTS  
page  
GENERAL INFORMATION ......................................................................... 4  
INSTALLATION........................................................................................ 5  
Locating The Water Heater .................................................................... 5  
Minimum Clearances.............................................................................. 8  
Optional Direct Vent-Air Intake Terminal Guard.................................. 9  
Venting..................................................................................................... 11  
Water Connections ................................................................................. 14  
Gas Connections .................................................................................... 17  
GENERAL OPERATION ............................................................................. 18  
Lighting and Shutdown Instructions .................................................... 19  
Thermostat Adjustment.......................................................................... 21  
Burner Flame Checks............................................................................. 23  
MAINTENANCE........................................................................................... 24  
DIAGNOSTICS FOR HONEYWELL CONTROL......................................... 27  
PARTS LIST AND DRAWING..................................................................... 29  
INSTALLATIONS FOR POTABLE WATER AND SPACE HEATING ....... 30  
NOTES..........................................................................................................31  
3
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GENERAL INFORMATION  
This gas-fired water heater’s design is certified by CSA International under  
the American National Standard Z21.10.1 - (latest edition) and CSA 4.1-M -  
(latest edition).  
This water heater must be installed in accordance with local codes or, in the  
absence of local codes, the National Fuel Gas Code, ANSI Z223.1- (Latest  
Edition) and/or in Canada CAN/CGA B149 Installation Codes (Latest  
Editions). The warranty for this water heater is in effect only when the water  
heater is installed, adjusted, and operated in accordance with these  
Installation and Operating Instructions. The manufacturer will not be held  
liable for any damage resulting from alteration and/or failure to comply with  
these instructions.  
This water heater is not design certified for installation in a mobile home.  
Such an installation may create a hazardous condition and will nullify the  
warranty.  
This water heater has been designed and certified for the purpose of heating  
potable water. The installation and use of this water heater for any purpose  
other than the heating of potable water may cause damage to the water  
heater and create a hazardous condition and nullify the warranty.  
WARNING  
Incorrect operation of this appliance may create a hazard to life and  
property and will nullify the warranty.  
Do not use this appliance if any external part has been submerged in water.  
You should contact a qualified service technician to inspect the appliance  
and to replace any part of the control system including the combination gas  
control, which has been submerged in water.  
DANGER  
Do not store or use gasoline or other flammable, combustible, or  
corrosive vapors and liquids in the vicinity of this or any other  
appliance.  
4
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General Information continued-  
IMPORTANT  
Before proceeding, please inspect the water heater and its components  
for possible damage. DO NOT install any damaged components. If  
damage is evident then please contact the supplier where the water  
heater was purchased or the manufacturer listed on the rating plate for  
replacement parts.  
Make sure that you check the rating plate and combination gas control on  
the water heater to be certain that the type of gas being supplied  
corresponds with the marking on the rating plate and combination gas  
control.  
A sacrificial anode is used to extend tank life. The removal of this anode, for  
any reason, will nullify the warranty. In areas where water is unusually active,  
an odor may occur at the hot water faucet due to a reaction between the  
sacrificial anode and the impurities in the water. If this should happen, an  
alternative anode may be purchased from the supplier that installed this  
water heater. This will minimize the odor while protecting the tank.  
Additionally, the water heater should be flushed with appropriate dissolvers  
to eliminate any bacteria.  
INSTALLATION  
WARNING  
Water heaters are heat producing appliances. To avoid damage or injury,  
do not store materials against the water heater or vent-air intake system.  
Use proper care to avoid unnecessary contact (especially by children)  
with the water heater and vent-air intake components. UNDER NO  
CIRCUMSTANCES SHALL FLAMMABLE MATERIALS, SUCH AS  
GASOLINE OR PAINT THINNER BE USED OR STORED IN THE  
VICINITY OF THIS WATER HEATER, VENT-AIR INTAKE SYSTEM OR  
IN ANY LOCATION FROM WHICH FUMES COULD REACH THE  
WATER HEATER OR VENT-AIR INTAKE SYSTEM.  
LOCATING THE WATER HEATER  
This water heater MUST NOT be installed in any location where gasoline or  
flammable vapors are likely to be present, unless the installation is such to  
eliminate the probable ignition of gasoline or flammable vapors.  
Water heaters in residential garages must be installed and located, or  
protected, to avoid physical damage. For other installations refer to  
local codes. In the absence of local codes, the water heater must be  
installed in compliance with the National Fuel Gas Code, (ANSI Z223.1-  
Latest Edition), or in Canada CAN/CGA B149.1 Natural Gas Installation  
Code (Latest Edition) or CAN/CGA B149.2 Propane Installation Code  
(Latest Edition).  
5
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Installation (Locating The Water Heater) continued-  
The location of this water heater is of the utmost importance. Before  
installing this water heater read the Installation section of these instructions.  
After reading these Installation and Operating Instructions, select a location  
for the water heater where the floor is level and is easily accessible to gas  
and water supply lines. DO NOT locate the water heater where water  
lines could be subjected to freezing temperatures. Make sure the cold  
water pipes are not located directly above the gas control so that  
condensate during humid weather does not drip on the controls.  
This water heater MUST be installed indoors out of the wind and  
weather.  
To comply with NSF requirements this water heater is to be:  
a) Sealed to the floor with sealant, in a smooth and easily cleanable  
way, or  
b) Installed with an optional leg kit that includes legs and/or extensions  
that provide a minimum clearance of 6” beneath the water heater.  
Note: 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 DSA Headquarters Office, 1102 Q Street, Suite 5100,  
Sacramento, CA 95811.  
Water heater corrosion and component failure can be caused by the heating  
and breakdown of airborne chemical vapors. Examples of some typical  
compounds that are potentially corrosive are: spray can propellants, cleaning  
solvents, refrigerator and air conditioning refrigerants, swimming pool  
chemicals, calcium and sodium chloride, waxes and process chemicals.  
These materials are corrosive at very low concentration levels with little or no  
odor to reveal their presence. NOTE: DAMAGE TO THE WATER HEATER  
CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED  
BY THE WARRANTY. DO NOT OPERATE THE WATER HEATER IF  
EXPOSURE HAS OR WILL OCCUR. DO NOT STORE ANY  
POTENTIALLY CORROSIVE COMPOUNDS IN THE VICINITY OF THE  
WATER HEATER.  
6
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Installation (Locating The Water Heater) continued-  
WARNING  
Liquefied petroleum gases/propane gas are heavier than air and will  
remain at floor level if there is a leak. Basements, crawl spaces, closets  
and areas below ground level will serve as pockets for accumulation of  
leaking gas. Before lighting, smell all around the appliance area for gas.  
Be sure to smell next to the floor.  
IF YOU SMELL GAS:  
Do not try to light any appliance.  
Do not touch any electric switch; do not use any telephone in your  
building.  
Immediately call your gas supplier from a neighbor’s  
telephone. Follow the gas supplier’s instructions.  
If you cannot reach your gas supplier, call the fire department.  
DO NOT OPERATE APPLIANCE UNTIL THE LEAKAGE IS  
CORRECTED!  
DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE  
NOT CERTAIN OF THE FOLLOWING:  
Liquefied petroleum gases/propane gas and natural gas have an  
odorant added by the gas supplier that aids in the detection of the  
gas.  
Most people recognize this odor as a “sulfur” or “rotten egg”  
smell.  
Other conditions, such as “odorant fade” can cause the odorant to  
diminish in intensity, or ”fade”, and not be as readily detectable.  
If you have a diminished sense of smell, or are in any way unsure of  
the presence of gas, immediately contact your gas supplier  
from a neighbor’s telephone.  
Gas detectors are available. Contact your gas supplier, or plumbing  
professional, for more information.  
7
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Installation (Locating The Water Heater) continued-  
The water heater must be located close enough to the outside wall to keep  
the venting distance within the maximum distance described in the vent kit’s  
installation instructions. Note: The direct vent-air intake terminal must be  
installed on a vertical wall. Read the instructions from the vent kit that was  
purchased with the water heater before locating the water heater.  
This water heater must be located in an area where leakage of the tank or  
water line connections and the combination temperature and pressure relief  
valve will not result in damage to the area adjacent to the water heater or to  
lower floors of the structure. When such locations cannot be avoided, a  
suitable drain pan, adequately drained, must be installed under the water  
heater. The pan must not restrict combustion airflow. The drain pan must  
have a minimum length and width of at least 4 in. (10.2 cm) greater than the  
diameter of the water heater and must not restrict proper combustion air flow  
to the water heater. The drain pan, as described above, can be purchased  
from your plumbing professional. The drain pan must be piped to an  
adequate drain. The piping must be at least 3/4 inch (1.9 cm) in diameter  
and pitched for proper drainage.  
It is recommended that a minimum clearance of four (4) inches (10.2 cm) be  
provided on the side of the water heater for servicing and maintenance of the  
combination temperature and pressure relief valve.  
MINIMUM CLEARANCES  
WARNING  
Failure to adhere to these installation and operating instructions may  
create a hazard to life and property and will nullify the warranty.  
This installation must allow access to the front of the water heater and  
adequate clearance must be provided for servicing and operating this  
water heater. The water heater may be installed on either a combustible or  
non-combustible floor. If the water heater is to be installed directly on  
carpeting, it must be installed on top of a metal or wood panel extending  
beyond the full width and depth of the appliance by at least three (3) inches  
(76.2 mm) in any direction or, if the appliance is to be installed in an alcove  
or closet, the entire floor must be covered by the panel. The minimum  
clearances to combustibles for this water heater is: zero (0) inch (0 cm) from  
the sides and rear, four (4) inches (10.2 cm) from the front of the jacket, zero  
(0) inch (0 cm) from the plenum, zero (0) inch (0 cm) from the air intake  
tubes and twelve (12) inches (30.5 cm) from the direct vent-air intake  
terminal. (See Figure 1).  
8
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OPTIONAL DIRECT VENT-AIR INTAKE TERMINAL GUARD  
WARNING  
The direct vent-air intake terminal is HOT while the water heater is in  
operation. Do not touch. Keep children, combustibles, gasoline and  
other liquids having flammable vapors away.  
It is recommended that a vent-air intake terminal guard be installed when the  
vent-air intake terminal is located where it can be touched accidentally, or  
accessed by children. (See Figure 2).  
A chain link or louvered fence may be used instead of the vent-air intake  
terminal guard. Maintain proper clearances as specified in this instruction  
manual to the vent-air intake terminal. (See Figure 3).  
Figure 1  
9
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Installation continued-  
Figure 2  
Figure 3  
10  
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VENTING  
WARNING  
The vent-air intake system must be properly installed. Failure to properly  
install the vent-air intake system could result in property damage,  
personal injury or death.  
DO NOT install any damaged vent-air intake system components.  
Contact the manufacturer of the water heater for replacement parts.  
This is a Direct Vent Gas Water Heater where all air for combustion is  
obtained from the outside atmosphere and all flue gases are discharged to  
the outside atmosphere. A vent kit that was designed for use with this  
water heater must be used when installing this water heater. If a vent  
kit was provided with the water heater, install the water heater with that  
vent kit per the instructions provided in the vent kit. If a vent kit was  
not provided with the water heater, refer to the label on the water  
heater to determine the proper vent kit options. Contact the supplier  
that you purchased the water heater from to obtain the correct vent kit.  
11  
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Figure 4  
Direct Vent Terminal Clearances  
Canadian Installations1  
US Installations2  
12 inches (30 cm)  
Clearance above grade, veranda, porch, deck or  
A=  
B=  
12 inches (30 m)  
balcony  
9 inches (23 cm) for  
appliances > 10,000 Btuh  
(3 kW) and 50,000  
Btuh (15 kW), 12 inches  
(30 cm) for appliances >  
50,000 Btuh (15 kW)  
Clearance to widow or door that may be opened  
12 inches (30 m)  
C=  
D=  
Clearance to permanently closed widow  
*b  
*b  
Vertical clearance to ventilated soffit located above the  
terminal within a horizontal distance of 2 feet (61 cm)  
from the center line of the terminal  
12 inches (30 cm) *a  
12 inches (30 cm) *a  
E=  
F=  
G=  
Clearance to unventilated soffit  
Clearance to outside corner  
Clearance to inside corner  
12 inches (30 cm) *a  
12 inches (30 cm) *a  
*b  
*b  
*b  
*b  
3 feet (91 cm) within a  
height 15 feet (4.6 m)  
above the  
meter/regulator  
assembly  
Clearance to each side of center line extended above  
meter/regulator assembly  
H=  
I=  
*b  
Clearance to service regulator vent outlet or oil tank  
vent  
36 inches (91 cm)  
12 inches (30 cm)  
6 feet (1.83 m)  
*b  
9 inches (23 cm) for  
appliances > 10,000 Btuh  
(3 kW) and 50,000  
Btuh (15 kW), 12 inches  
(30 cm) for appliances >  
50,000 Btuh (15 kW)  
Clearance to non-mechanical air supply inlet to building  
or the combustion air inlet to any other appliance  
J=  
3 feet (91 cm) above if  
within 10 feet horizontally  
K=  
Clearance to a mechanical air supply inlet  
Clearance above paved sidewalk or paved driveway  
located on public property  
L=  
7 feet (2.13 m)†  
*b  
*b  
M=  
Clearance under a veranda, porch, deck, or balcony  
12 inches (30 cm) ‡  
12  
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Venting continued-  
1 In accordance with the current CAN/CGA-B149 Installation Codes.  
2 In accordance with the current ANSI Z223.1-(Latest edition)/NFPA 54 National Fuel Gas Code.  
† A vent must not terminate directly above a sidewalk or paved driveway that is located between two single-  
family dwellings and serves both dwellings.  
‡ Permitted only if a veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the  
floor.  
*a) A minimum clearance value determined by testing in accordance with section 2.20.  
*b) “Clearance in accordance with local installation codes and the requirements of the gas supplier”.  
The vent system must terminate so that proper clearances are maintained as cited in  
local codes or the latest edition of the National Fuel Gas Code, ANSI Z223.1 – (latest  
edition) as follows:  
1. Do not terminate near soffit vents or crawl space or other area where condensate  
or vapor could create a nuisance or hazard or cause property damage.  
2. Do not terminate the exhaust vent terminal where condensate or vapor could  
cause damage or could be detrimental to the operation of regulators, relief  
valves, or other equipment.  
3. Do not terminate the exhaust vent terminal over public area or walkways where  
condensate or vapor can cause nuisance or hazard.  
4. The vent must terminate a minimum of 12 inches above expected snowfall level  
to prevent blockage of vent termination.  
Vent pipes serving direct vent 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 WATER HEATER  
and CLEARANCES, and with National Fuel Gas Code and local code.  
13  
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WATER CONNECTIONS  
Note: BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE  
MAIN WATER SUPPLY VALVE.  
After shutting off the main water supply, open a faucet to relieve the water  
line pressure to prevent any water from leaking out of the pipes while making  
the water connections to the water heater. After the pressure has been  
relieved, close the faucet. The COLD water inlet and HOT water outlet are  
identified on the top of the water heater. The fittings at the cold water inlet  
and hot water outlet are dielectric waterway fittings with 3/4” NPT male  
thread. Make the proper plumbing connections between the water heater  
and the plumbing system to the house. Install a shut-off valve in the cold  
water supply line.  
CAUTION  
If sweat fittings are to be used, DO NOT apply heat to the nipples on top of  
the water heater. Sweat the tubing to the adapter before fitting the adapter  
to the water connections. It is imperative that heat is not applied to the  
nipples containing a plastic liner.  
APPROXIMATE TIME/TEMPERATURE RELATIONSHIPS IN SCALDS  
120°F (49°C)  
125°F (52°C)  
130°F (54°C)  
135°F (57°C)  
140°F (60°C)  
145°F (63°C)  
150°F (66°C)  
155°F (68°C)  
More than 5 minutes  
1½ to 2 minutes  
About 30 seconds  
About 10 seconds  
Less than 5 seconds  
Less than 3 seconds  
About 1½ seconds  
About 1 second  
14  
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Water Connections continued-  
WARNING  
For protection against excessive temperatures and pressure, install  
temperature and pressure protective equipment required by local codes,  
but not less than a combination temperature and pressure relief valve  
certified by a nationally recognized testing laboratory that maintains  
periodic inspection of production of listed equipment or materials as  
meeting the requirements of the Standard for Relief Valves and  
Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI  
Z21.22 and the Standard CAN1-4.4 Temperature, Pressure,  
Temperature and Pressure Relief Valves and Vacuum Relief Valves.  
The combination temperature and pressure relief valve must be marked  
with a maximum set pressure not to exceed the maximum working  
pressure of the water heater. The hourly BTU discharge capacity or the  
rated steam relief capacity of the combination temperature and pressure  
relief valve must not be less than the input rating of the water heater.  
Install the combination temperature and pressure relief valve into the  
opening provided and marked for this purpose on the water heater.  
Note: Some models may already be equipped or supplied with a  
combination temperature and pressure relief valve. Verify that the  
combination temperature and pressure relief valve complies with local  
codes. If the combination temperature and pressure relief valve does  
not comply with local codes, replace it with one that does. Follow the  
installation instructions above on this page.  
Install a discharge line that terminates six (6) inches (15 cm) above the  
floor, or any distance below the structural floor, to the outlet of the  
combination temperature and pressure relief valve. DO NOT allow  
water from the discharge line to contact any live electrical part. The  
discharge line is to be installed to allow for complete drainage of both  
the combination temperature and pressure relief valve and the discharge  
line. The water from the discharge line must be directed to a suitable  
drain or area that will not be damaged by water Refer to “LOCATING  
THE WATER HEATER.” The discharge opening must not be subjected  
to blockage or freezing. DO NOT thread, plug or cap the discharge line.  
It is recommended that a minimum clearance of four (4) inches (10.2  
cm) be provided on the side of the water heater for servicing and  
maintenance of the combination temperature and pressure relief valve.  
Do not place a shutoff valve between the combination temperature and  
pressure relief valve and the water heater, or on discharge pipes  
between such valves or the atmosphere.  
15  
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Water Connections continued-  
WARNING  
FAILURE TO INSTALL AND MAINTAIN A NEW, LISTED 3/4” X 3/4”  
TEMPERATURE AND PRESSURE RELIEF VALVE WILL RELEASE  
THE MANUFACTURER FROM ANY CLAIM, WHICH MIGHT RESULT  
FROM EXCESSIVE TEMPERATURES AND PRESSURES.  
If this water heater is installed in a closed water supply system, such as the  
one having a back-flow preventer in the cold water supply, provisions must  
be made to control thermal expansion. DO NOT operate this water heater in  
a closed system without provisions for controlling thermal expansion. Your  
water supplier or local plumbing inspector should be contacted on how to  
control this situation.  
After installation of the water lines, open the main water supply valve and fill  
the water heater. While the water heater is filling, open several hot water  
faucets to allow air to escape from the water system. When a steady stream  
of water flows through the faucets, close them and check all water  
connections for possible leaks. NEVER OPERATE THE WATER HEATER  
WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER.  
WARNING  
Hydrogen gas can be produced in an operating water heater that has  
not had water drawn from the tank for a long period of time (generally  
two (2) weeks or more). Hydrogen gas is extremely flammable. To  
prevent the possibility of injury under these conditions, we recommend  
the hot water faucet to be open for several minutes at the kitchen sink  
before you use any electrical appliance that is connected to the hot  
water system. If hydrogen is present, there will be an unusual sound  
such as air escaping through the pipes as hot water begins to flow. Do  
not smoke or have open flame near the faucet at the time it is open.  
This water heater can deliver scalding temperature water at any faucet in the  
system. Be careful whenever using hot water to avoid scalding injury.  
Certain appliances such as dishwashers and automatic clothing washers  
may require increased temperature water. By setting the thermostat on this  
water heater to obtain the increased temperature water required by these  
appliances, you may create the potential for scald injury. To protect against  
injury, you should install an ASSE approved mixing valve in the water  
system. This valve will reduce point of discharge temperature by mixing cold  
and hot water in branch supply lines. Such valves are available from the  
manufacturer of this water heater or a local plumbing supplier. Please  
consult with a plumbing professional.  
16  
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Gas Connections  
The gas supply lines must meet all requirements of the National Fuel Gas Code  
(ANSI Z223.1-Latest Edition), or in Canada CAN/CGA B149.1 Natural Gas  
Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation Code  
(Latest Edition).  
The minimum permissible gas supply pressure for the purpose of input adjustment is  
one (1.0) inch (0.25 kPa) water column above the operating manifold pressure. See  
the rating plate and gas valve for the manifold pressure and gas type. The maximum  
permissible gas supply pressure is fourteen (14.0) inches (3.5 kPa) water column for  
natural gas and liquefied petroleum gases/propane gas.  
1. Connect this water heater only to the type of gas (Natural or Propane gas) as  
shown on the rating plate. Use clean black iron pipe or equivalent material  
approved by local codes and ordinances. (Dirt and scale from the pipe can enter  
the gas valve and cause it to malfunction). The inlet gas line must have a  
minimum length of three (3) inches (7.6 cm) drip leg (sediment trap) installed as  
close to the water heater’s gas valve as possible. A ground joint union must be  
installed as close to the water heater as possible in the gas supply line feeding  
the water heater to permit servicing of the water heater. Compounds used on the  
threaded joints of the gas piping must be resistant to the action of liquefied  
petroleum gases/propane gas. DO NOT apply pipe dope to the gas valve inlet  
and make certain that no pipe dope has become lodged in the inlet screen of the  
gas valve. Extreme care must be taken to ensure no pipe dope enters the gas  
valve. Avoid excessive torque when tightening the gas supply line to the gas  
valve. Excessive torque may result in cracking of the gas valve housing and  
could create a gas leak. When tightening gas supply line to L.P. control, it is  
recommended to hold the inlet body of the control securely with an adequate  
wrench. The suggested maximum torque is 31.5 ft. lbs. (4.4 kg-m).  
WARNING  
The manufacturer of this water heater will not be liable for any damage or injury  
caused as a result of a cracked gas inlet as a result of excessive torque.  
2. This water heater and its gas connection must be leak tested before placing the  
water heater in operation. Check for gas leaks with a soap and water solution  
and a brush or a commercial leak detector fluid. NEVER USE A MATCH OR  
OPEN FLAME FOR TESTING!  
CAUTION  
The water heater and individual shutoff valve must be disconnected from the gas  
supply piping system during any pressure testing of the system at test pressures  
in excess of 1/2 psi (3.5 kPa). The water heater must be isolated from the gas  
supply piping system by closing its manual shutoff valve during any pressure  
testing of the gas supply system at test pressures equal to or less than 1/2 psi  
(3.5 kPa). The supply line must be capped when not connected to the water  
heater.  
3. While checking for leaks care must be taken to prevent solution from  
contacting the electrical connections at the control. If electrical connections at the  
control become wet, they must be thoroughly dried before attempting to operate  
the water heater.  
17  
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GENERAL OPERATION  
WARNING  
Water heaters are heat producing appliances. To avoid damage or  
injury, do not store materials against the water heater or vent-air intake  
system. Use proper care to avoid unnecessary contact (especially by  
children) with the water heater and vent-air intake system. UNDER NO  
CIRCUMSTANCES MUST FLAMMABLE MATERIALS, SUCH AS  
GASOLINE OR PAINT THINNER BE USED OR STORED IN THE  
VICINITY OF THIS WATER HEATER, VENT-AIR INTAKE SYSTEM  
OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE  
WATER HEATER OR VENT-AIR INTAKE SYSTEM.  
TO FILL THE WATER HEATER  
1. Close the water heater drain valve by turning the knob clockwise  
2. Open the cold water supply shut-off valve.  
.
3. Open several hot water faucets to allow air to escape from the system.  
4. When a steady stream of water flows from the faucets, the water heater  
is filled. Close the faucets and check for water leaks at the water  
heater drain valve, combination temperature and pressure relief valve  
and the hot and cold water connections.  
TO DRAIN THE WATER HEATER  
Should it become necessary to completely drain the water heater, make sure  
you follow the steps below:  
1. Set the thermostat dial to the lowest possible position.  
2. Rotate and if applicable partially depress gas control knob clockwise  
to the “OFF” position.  
3. Shut off the gas supply to the water heater.  
4. Close the cold water supply shut-off valve.  
5. Open the drain valve on the water heater by turning the knob counter-  
clockwise  
. The drain valve has threads on the end that will allow  
the connection of a standard hose coupling.  
6. Open a hot water faucet to allow air to enter the system.  
To refill the water heater, refer to “To Fill the Water Heater.”  
18  
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Lighting & Shutdown Instructions – White Rodgers and Robertshaw gas  
control.  
19  
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Lighting & Shutdown Instructions Continued - Honeywell gas control.  
20  
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THERMOSTAT ADJUSTMENT - White Rodgers gas control.  
160°F Control  
180°F Control  
Figure 5  
The thermostat dial is set to its lowest temperature setting when shipped from the factory.  
Remember that lower temperature settings are more energy efficient. Adjust the  
temperature by turning the thermostat dial. It is suggested that the starting point setting not be  
greater than the ” “ or “ “mark on the thermostat dial (approximately 120°F [48.9°C]) as  
indicated above. Rotate the thermostat dial clockwise  
to decrease the temperature  
setting. Rotate the thermostat dial counter-clockwise  
to increase the temperature  
setting. Adjust the dial until the minimum acceptable temperature is achieved (See figure 5  
above for approximate temperature settings).  
Robertshaw gas control.  
160°F Control  
180°F Control  
Figure 6  
The thermostat dial is set to its lowest temperature setting when shipped from the factory.  
Remember that lower temperature settings are more energy efficient. Adjust the  
temperature by turning the thermostat dial. It is suggested that the starting point setting not be  
greater than the “ ” mark on the thermostat dial (approximately 120°F [48.9°C]) as indicated  
above. Rotate the thermostat dial counter-clockwise  
setting. Rotate the thermostat dial clockwise  
to decrease the temperature  
to increase the temperature setting.  
Adjust the dial until the minimum acceptable temperature is achieved (See figure 6 above for  
approximate temperature settings).  
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Thermostat Adjusting continued – Honeywell control.  
22  
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Thermostat Adjusting continued-  
DANGER  
Hotter water increases the risk of scald injury. Scalding may occur within five (5)  
seconds at a temperature setting of 140° F (60° C). To protect against hot water  
injury, install an ASSE approved mixing valve in the water system. This valve  
will reduce point of discharge temperature by mixing cold and hot water in branch  
water lines. A licensed plumbing professional or local plumbing authority should  
be consulted.  
Note: This water heater is equipped with an energy cut out device to prevent  
overheating. Should overheating occur or the gas supply fail to shut off, turn off  
the manual gas control valve to the appliance and call a qualified service  
technician.  
Note: Whenever the water heater is filled with cold water, condensate will form  
on the cool tank surface and drops of water will fall on the hot burner and  
combustion chamber surfaces producing a “sizzling” noise. Condensation is  
normal and does not indicate a leak. It will disappear when the tank becomes  
heated.  
BURNER FLAME CHECKS  
At the time of installation and at periodic intervals (not more than six (6)  
months), a visual check of the pilot and main burner flames should be  
conducted. The flames should be similar to those pictured below. The main  
burner should light smoothly from the pilot. (See Figure 9).  
Figure 9  
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MAINTENANCE  
WARNING  
Water heaters are heat producing appliances. To avoid damage or  
injury, do not store materials against the water heater or vent-air intake  
system. Use proper care to avoid unnecessary contact (especially by  
children) with the water heater and vent-air intake system. UNDER NO  
CIRCUMSTANCES MUST FLAMMABLE MATERIALS, SUCH AS  
GASOLINE OR PAINT THINNER BE USED OR STORED IN THE  
VICINITY OF THIS WATER HEATER, VENT-AIR INTAKE SYSTEM  
OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE  
WATER HEATER OR VENT-AIR INTAKE SYSTEM.  
IMPORTANT  
The water heater should be inspected at a minimum annually by a  
qualified service technician for damaged components and/or joints  
not sealed. DO NOT operate this water heater if any part is found  
damaged or if any joint is found not sealed.  
The following maintenance should be performed by a qualified service  
technician at the minimum periodic intervals suggested below. In some  
installations the maintenance interval may be more frequent depending on  
upon the amount of use and the operating conditions of the water heater.  
Regular inspection and maintenance of the water heater and vent-air intake  
system will help to insure safe and reliable operation.  
1. Annually check the operation of the thermostat.  
2. The flow of combustion and ventilation air MUST NOT be restricted.  
Annually inspect the direct vent-air intake terminal to insure it is not  
blocked or damaged. Clear the direct vent-air intake terminal openings  
of any dirt, dust, or other restrictions. WARNING! Certain areas of the  
direct vent-air intake terminal are HOT.  
3. Annually inspect the vent-air intake system to insure that all components  
are securely fastened and all joints and seams are properly sealed.  
4. At all times keep the water heater area clear and free from combustible  
materials, gasoline and other flammable vapors and liquids.  
5. Bi-annually conduct a visual check of the main and pilot burner flames to  
determine that they are burning properly. See “BURNER FLAME  
CHECKS.”  
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Maintenance continued-  
6. Annually remove the inner door and main burner assembly to clean  
orifices and related parts of any dirt or other foreign material. Inspect the  
burner ports for obstructions or debris and clean with a wire brush as  
needed. Wire brush and/or vacuum clean the combustion chamber as  
needed to remove scale deposits and debris. Inspect the inner door  
gasket for wear and tear and replace if necessary. NOTE: It is  
imperative for proper operation of the water heater that the inner door be  
properly sealed.  
7. At least once a year, check the combination temperature and pressure  
relief valve to insure that the valve has not become encrusted with lime.  
Lift the lever at the lever at the top of the valve several times until the  
valve seats properly without leaking and operates freely.  
WARNING  
When lifting lever of the combination temperature and pressure  
relief valve, hot water will be released under pressure. Be careful  
that any released water does not result in bodily injury or property  
damage.  
8. Monthly, drain off a gallon of water to remove silt and sediment by using  
the water heater’s drain valve.  
WARNING! THIS WATER MAY BE HOT.  
9. If the combination 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 this situation. Do not plug the  
combination temperature and pressure relief valve outlet.  
10. A combination sacrificial anode rod/hot water outlet nipple has been  
installed to extend tank life. The anode rod should be inspected  
periodically (every two (2) years) and replaced when necessary to  
prolong tank life. Contact the plumbing professional who installed the  
water heater or the manufacturer listed on the rating plate for anode  
replacement information. The use of a water softener may increase the  
speed of anode consumption. More frequent inspection of the anode is  
needed when using softened (or phosphate treated) water.  
11. The vent system must be inspected at least once a year to ensure  
against leakage of exhaust products.  
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Maintenance continued-  
CAUTION  
FOR YOUR SAFETY, DO NOT ATTEMPT REPAIR OF COMBINATION  
GAS CONTROL, BURNERS OR GAS PIPING. REFER REPAIRS TO A  
QUALIFIED SERVICE TECHNICIAN.  
Contact your supplier or plumbing professional for replacement parts or  
contact the company at the address given on the rating plate of the water  
heater.  
Provide the part name, model and serial numbers of the water heater when  
ordering parts.  
READ THE WARRANTY FOR A FULL EXPLANATION OF THE LENGTH  
OF TIME THAT PARTS AND THE WATER HEATER ARE WARRANTED.  
Manufactured under one or more of the following U.S. Patents: RE.34,534;  
B1 5,341,770; 4,416,222; 4,628,184; 4,669,448; 4,672,919; 4,808,356; 4,829,983;  
4,861,968; 4,904,428; 5,000,893; 5,023,031; 5,052,346; 5,081,696; 5,092,519;  
5,115,767; 5,199,385; 5,277,171; 5,372,185; 5,485,879; 5,574,822; 5,596,952;  
5,660,165; 5,682,666; 5,761,379; 5,943,984; 5,954,492; 5,988,117; 6,142,216;  
6,395,280; 6,684,821; 7,063,132; 7,007,748  
Other U.S. and Foreign patent applications pending. Current Canadian Patents:  
1,272,914; 1,280,043; 1,289,832; 2,045,862; 2,092,105; 2,107,012; 2,108,186;  
2,112,515  
Complete the following information and retain for future reference:  
Model No:  
Serial No:  
Service Phone No.  
Days:  
Nights:  
Address:  
Supplier:  
Supplier’s Phone No:  
26  
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DIAGNOSTICS FOR HONEYWELL CONTROL  
LED Status  
Control Status  
Probable Cause  
1. Gas valve is functioning  
normally  
2. Gas valve is not powered.  
Light pilot  
None (LED not on or  
flashing)  
Millivolt power is not  
present. Light pilot.  
Gas valve is powered and waiting  
for the set point knob to be turned  
to a water temperature setting. If  
the set point knob is at desired  
setting the thermostat is satisfied.  
If set point knob is in  
"PILOT" position then pilot  
flame is detected. (no  
faults).  
One flash and three  
second pause.  
LED strobe (two quick  
flashes) and three second  
pause  
Thermostat calling for heat  
(no faults)  
Water heater operating normally.  
Set point knob was recently turned  
to "OFF" position. Wait until LED  
goes out before attempting to  
relight  
Set point knob has been  
recently turned to the  
"OFF" position.  
LED on continuously.  
Weak pilot flame detected. 1. Unstable pilot.  
Two flashes and three  
second pause.  
System will reset when  
pilot flame is sufficient.  
2. Pilot tube blocked or  
restricted.  
1. Temperature sensor out of  
calibration.  
2. Possible short.  
Three flashes and three Insufficient water heating.  
second pause.  
System will reset.  
Excessive tank  
temperature. System must  
be reset.  
1. Temperature sensor out of  
calibration.  
2. Faulty gas valve.  
Four flashes and three  
second pause.  
1. Damage to the temperature  
wire.  
2. Temperature sensor  
resistance out of range.  
3. Replace temperature sensor.  
4. If temperature sensor  
replacement does not correct  
the problem; Verify control is  
not wet or physically damaged  
5. Turn set point knob to "OFF"  
position. Turn set point knob  
to "PILOT" position and light  
pilot.  
Five flashes and three  
second pause.  
Temperature sensor fault.  
6. Replace gas valve if five flash  
error persists.  
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Diagnostics for Honeywell Control Continued-  
LED Status  
Control Status  
Probable Cause  
Water leak detected by  
accessory module (some  
models).  
Six flashes and three  
second pause  
1. Excessive amount of water in  
drain pan/water dam.  
1. Verify control is not wet or  
physically damaged.  
2. Turn set point knob to "OFF"  
position. Turn set point knob to  
"PILOT" position and light pilot.  
3. Replace gas valve if seven  
flash error persists.  
Seven flashes and three Gas valve electronic fault  
second pause.  
detected.  
1. Pilot valve stuck in open  
position  
2. Turn set point knob to "OFF"  
position. Turn set point knob to  
"PILOT" position and light pilot.  
3. Replace gas valve if eight flash  
error persists.  
Eight flashes and three  
second pause  
False pilot flame present.  
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DIRECT VENT WATER HEATER PARTS LIST  
Note: Provide the part name, model and serial numbers of the water heater  
when ordering parts.  
PART NAME &  
DESCRIPTION  
1.  
2.  
3.  
4.  
5.  
6.  
Plenum  
Plenum Gasket  
Flue reducer  
Dip Tube & Nipple  
Anode Rod & Nipple  
Temperature-Pressure  
Relief Valve (Certain  
Models)  
7.  
Baffle  
8.  
9.  
Vertical Radshield  
Horizontal Radshield  
Chamber Assembly  
Jacket Base  
Air Intake Boot Gasket  
Air Intake Boot  
Inner Door Assembly  
Combination Gas  
Control w/ E.C.O.  
Piezo Ignitor Assembly  
Drain Valve  
10.  
11.  
12.  
13.  
14.  
15.  
16.  
17.  
18.  
19.  
Outer Door  
Pilot Assembly  
w/Electrode  
20.  
21.  
22.  
23.  
Gas Feed Line (Burner)  
Steel Burner  
Main Burner Orifice  
Air Intake Tube  
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THE FOLLOWING INSTRUCTIONS ARE FOR INSTALLATION OF:  
GAS WATER HEATERS SUITABLE FOR WATER (POTABLE)  
HEATING AND SPACE HEATING  
1. All piping components connected to this water heater for space heating  
applications must be suitable for use with potable water. In  
Massachusetts, space heating piping length must not exceed 50 feet.  
2. Toxic chemicals, such as those used for boiler treatment, must not  
be introduced into potable water used for space heating.  
3. This water heater must not be connected to an 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 other means, such as an ASSE approved mixing  
valve must be installed to temper the water for those uses in order to  
reduce the scald hazard potential.  
Please refer to the illustration below for suggested piping arrangement.  
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NOTES  
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NOTES  
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