Bradford White U-1-TW-60T6FRN Ultra Low NOx Power Vent Gas Instruction manual
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POWER VENT GAS WATER HEATER
A Spanish language version of these instructions is available by contacting the company listed on the rating plate.
La version espanola de estas instrucciones se puede obtener al escribirle a la fabrica cuyo nombre aparece en la placa de especificaciones .
INSTALLATION AND OPERATION
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 we recommend this water heater be installed and serviced by a plumbing professional.
238-53846-00B REV 2/20
CONGRATULATIONS!
You have purchased one of the finest water heaters on the market today!
This installation, operation and instruction manual will explain in detail the installation and maintenance of your new Power Vented
Gas Water Heater. We strongly recommend that you contact a plumbing professional for the installation of this water heater.
We require that you carefully read this manual, as well as the enclosed warranty, and refer to it when questions arise. If you have any specific questions concerning your warranty, please consult the plumbing professional from whom your water heater was purchased. For your records we recommend that you write the model, serial number and installation date of your water heater in the maintenance section in the back of this manual.
This manual should be kept with the water heater.
Special Flammable Vapor Ignition Resistant System
This water heater is equipped with a Flammable Vapor Ignition Resistant
System. In the event of improper usage or storage of gasoline or other flammable materials in the location where the water heater is installed, the technology will resist ignition of the flammable vapors outside the confines of the water heater.
The Flammable Vapor Ignition Resistant System features:
Advanced Flame Arrestor Design;
Flammable Vapor Sensor;
Automatic Ignition Device;
Sight Window to observe operation of pilot and burner.
FOR YOUR SAFETY: Activation of the Flammable Vapor Ignition Resistant
System occurs when flammable vapors are drawn into the water heater and are combusted. If flammable vapors are detected and/or sensed:
Do not try to light any appliance.
Do not touch any electrical switch; Do not use any phone in your building.
Leave the premises and immediately call the fire department from a neighbor’s phone. Follow the fire department’s instructions.
Once the flammable vapor has been evacuated, contact your plumbing professional or the manufacturer for further instructions. Replacement of a
Flammable Vapor Ignition Resistant System equipped water heater due to a flammable vapor shutdown is not covered under the terms of the limited warranty.
2
TABLE OF CONTENTS
Page
GENERAL INFORMATION ................................................................ 4
INSTALLATION. ................................................................................ 5
Locating The Water Heater ........................................................ 5
Minimum Clearances .................................................................. 8
Venting ........................................................................................ 8
Specifications for 40 Gal (151.4 L) / 50 Gal (189.2 L) / 60 Gal
(227.0 L) ....................................................................................... 12
Vent Pipe Preparation and Joining ........................................... 16
Combustion Air Supply .............................................................. 18
Water Connections ..................................................................... 20
Gas Connections ........................................................................ 23
Electrical Connections ............................................................... 24
Wiring Diagram ........................................................................... 25
GENERAL OPERATION .................................................................... 26
Lighting & Shutdown Instructions ............................................ 27
Thermostat Adjustment ............................................................. 28
Burner Flame Check ................................................................... 29
MAINTENANCE ................................................................................. 29
TROUBLESHOOTING ....................................................................... 34
PARTS DIAGRAM ............................................................................. 37
INSTALLATION INSTRUCTIONS FOR POTABLE WATER AND
SPACE HEATING .............................................................................. 38
NOTES .............................................................................................. 39
3
GENERAL INFORMATION
This gas-fired water heater’s design is certified by CSA International under the
American National Standard Z21.10.1 and CSA 4.1-M , most current editions at the time of manufacture. This is a category III water heater.
This water heater must be installed in accordance with local codes or, in the absence of local codes, the National Fuel Gas Code, ANSI Z22 3.1
-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.
CAUTION
Incorrect operation of this appliance may create a hazard to life and property and will nullify the warranty.
WARNING
Prior to connecting the gas supply line to a gas fired water heater, ensure that the gas supply line does not have moisture/water or dirt/scale inside the gas line. Commonly this check is done at the lowest point in the gas distribution system prior to gas burning appliances.
DO NOT use this appliance if any external part to the tank 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. See the Gas
Connections section of this manual before servicing or replacing a water heater that has had any external part to the tank 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.
IMPORTANT
Before proceeding, please inspect the water heater and its components for possible damage. DO NOT install any water heater with 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.
4
General Information continued-
CAUTION
This water heater must not be used as a source of construction heat or during the construction phase of any building.
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(s) is used to extend tank life. Removal of any anode, except for inspection and/or replacement, 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 impurities in the water. If this should happen, an alternative anode(s) 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.
WARNING
This product contains one or more chemicals known to the State of California to cause cancer, birth defects, or reproductive harm.
INSTALLATION
Locating The Water Heater
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 SHOULD 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.
DO NOT install the water heater in any location where gasoline or flammable vapors are likely to be present.
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
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 .
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.
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.
WARNING
Liquefied petroleum gases/propane gases 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!
6
Installation (Locating The Water Heater) continued-
WARNING
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.
The water heater must be located close enough to the outside wall to keep the venting distance within the maximum distance described in the installation instructions. Locate the water heater as close as possible to the vent opening.
Read the venting section in this installation instruction manual 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 piped for proper drainage must be installed under the water heater. The pan must not restrict combustion air flow. 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 in (1.9 cm) in diameter and pitched for proper drainage.
It is recommended that a minimum clearance of 4 in (10.2 cm) be provided on the side of the water heater for servicing and maintenance of the combination temperature and pressure relief valve.
This water heater MUST be installed indoors out of the wind and weather.
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 the DSA Headquarters Office: 1102 Q Street, Suite 5100,
Sacramento CA 95811.
7
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 noncombustible 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 3 in (7.6 cm) 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 are: 0 in (0 cm) from the sides and rear, 5 in (12.7 cm) from the front of the jacket, 0 in (0 cm) from the vent connector and 15 in (38.1 cm) from the jacket top. Increased distances provide greater clearances for servicing.
Venting
Figure 1 - Vent Terminal Clearances
8
Venting continued-
A=
B=
Clearance above grade, veranda, porch, deck or balcony
Clearance to window or door that may be opened
Canadian
Installations 1
12 inches
(30 cm)
12 inches
(30 cm)
US
Installations 2
12 inches
(30 cm)
4 feet
(1.2 m) below or to the side of opening;
12 inches
(30 cm)
above opening
*b
*b
C=
D=
E=
F=
G=
H=
I=
J=
K=
Clearance to permanently closed window
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
Clearance to unventilated soffit
Clearance to outside corner
Clearance to inside corner
Clearance to each side of center line extended above meter/regulator assembly
Clearance to service regulator vent outlet or oil tank vent
Clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other appliance
Clearance to a mechanical air supply inlet
*b
*b
*b
*b
*b
3 feet
(91 cm) within a height
15 feet (4.6 m) above the meter/regulator assembly
36 inches
(91 cm)
12 inches
(30 cm)
6 feet
(1.83 m)
*b
*b
*b
*b
*b
4 feet
(1.2m) below or to side of opening;
12 inches
(30 cm)
above opening.
3 feet (91 cm) above if within
10 feet (3.1 m) horizontally
7 feet
(2.13 m) †
*b
L=
M=
Clearance above paved sidewalk or paved driveway located on public property
Clearance under a veranda, porch, deck, or balcony
7 feet
(2.13 m) †
12 inches
(30 cm) ‡
1 In accordance with the current CAN/CGA-B149
Installation Codes
.
2 In accordance with the current ANSI Z223.1-(Latest edition)/NFPA 54
Fuel Gas Code
.
National
† A vent shall 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
5.21.1 of ANSI Z21.10.1, latest edition.
*b) “Clearance in accordance with local installation codes and the requirements of the gas supplier”.
9
Venting continued-
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
Z223.1.73.4e and 7.8a, b 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 shall terminate a minimum of 12” (25.4 cm) above expected snowfall level to prevent blockage of vent termination.
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
WATER HEATER and CLEARANCES, and with National Fuel Gas Code and local codes.
Clearance to combustibles for all venting pipes and terminals
For installations in the US
0” minimum
For installations in Canada
Refer to vent pipe and terminal manufacturer’s installation instructions for clearances to combustibles
DO NOT place insulation or other materials in the required clearance spaces between the venting to combustible material unless otherwise specified.
WARNING
Risk of carbon monoxide poisoning or fire due to joint separation or pipe breakage.
This water heater must be properly vented and connected to an approved vent system in good condition. DO NOT operate water heater with the absence of an approved vent system. A clean and unobstructed vent system is necessary to allow noxious fumes that could cause injury or loss of life to vent safely and will contribute toward maintaining the water heater’s efficiency. The acceptance of the venting system is dependent upon full compliance with these installation instructions.
Venting system must NOT pass through rated fire separations.
The venting system must be free to expand and contract. This venting system must be supported in accordance with these instructions.
10
Venting continued-
NOTICE
For installations in Canada, field supplied vent piping must comply with
CAN/CGA B149.1 (latest edition) and be certified to the Standard For
Type BH, Class II, 65°C, Gas Venting Systems, ULC S636.
Components of this listed system shall not be interchanged with other vent systems or unlisted pipe/fittings. All components and specified primers and cements of the certified vent system must be from a single system manufacturer and not intermixed with other system manufacturer’s vent system parts. The supplied vent connector and vent termination are certified under ULC S636 and are also certified as part of the water heater. Refer to the following tables for approved venting materials, primers, and cements. All approved primers and cements are to be used within their marked time limitations.
Approved Venting Materials
For installations in the US only
PVC DWV (ASTM D-2665)
PVC Sch. 40, 80, 120 (ASTM-D1785)
CPVC Sch. 40, 80 (ASTM-F441)
CPVC (ASTM D2846)
ABS Sch. 40 DWV (ASTM D2661)
For installations in CANADA
ULC S636 approved PVC for flue gas venting rated Class II, 65°C
ULC S636 approved CPVC for flue gas venting rated Class II, 65°C
Approved Primers and Cements
For installations in the US only
PVC and CPVC Primer (ASTM-F656)
PVC Cement (ASTM D-2564)
CPVC Cement (ASTM F493)
ABS Primer and Cement (ASTM D-
2235)
For installations in CANADA
ULC S636 approved Primer and
Cement for flue gas venting rated
Class II, 65°C
NOTICE
Use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel ®
(polyphenosulfone) in non-metallic venting systems is prohibited and covering non-metallic venting with thermal insulation is prohibited.
11
Venting System Condensation
Condensate formation does not occur in all installations of power vented water heaters but should be protected against on installations where condensation can form in the venting system.
Formation of condensation in the venting system of power vented water heaters is dependent upon installation conditions including, but not limited to:
ambient temperature and humidity of installation location;
ambient temperature and humidity of venting space;
vent distance and slope;
and product usage.
In order to effectively control condensate from adversely affecting the mechanical components of the water heater several methods may be employed:
1. For horizontal installations the vent pipe can be installed with a downward slope (not less than 1/8" (3 cm) ) and away from the blower.
2.
In order to prevent condensate from draining back into the blower
(vertical or horizontal runs), an optional condensate kit is available as a service part (Condensate kit, p/n 239-45875-00). A molded exhaust adapter with drain outlet is secured with one hose clamp, to the vent pipe. Tubing is provided to drain any accumulated condensate away from the water heater and to a suitable drain. The kit comes complete with instructions for proper installation.
Venting Specifications for 40 Gallon
(151.4 L)/
50 Gallon
(189.2 L)/
60 Gallon (227.0 L):
This water heater is a power vented appliance and is designed to vent its products of combustion through 2 in (5.1 cm) or 3 in (7.6 cm) diameter vent pipe to the outdoors. The water heater may be either vented horizontally through the wall or vertically through the roof. Use a 3 in (7.6 cm) to 2 in (5.1 cm) reducer to connect to the vent outlet when using 3 in (7.6 cm) vent pipe.
Apply proper cement at joint locations. Table 1 lists the maximum vent lengths for this water heater using 2 in (5.1 cm) vent pipe. If possible, locate the water heater so that the venting length and number of elbows are kept to the minimum distance necessary to reach the outside. If the installation requires venting lengths that exceed the lengths listed for 2 in (5.1 cm) vent pipe in
Table 1 then use 3 in (7.6 cm) vent pipe for the vent connector.
Table 2 lists the venting distances allowed with 3 in (7.6 cm) diameter vent pipe. When venting with 3 in (7.6 cm) vent pipe , use a 3 in (7.6 cm) to 2 in
(5.1 cm) reducer to exit through the building wall with 2 in (5.1 cm) vent pipe.
Use the 2 in (5.1 cm) vent terminal supplied with the water heater to terminate on the outside of the building. If the length of the 2 in (5.1 cm) needed to go through the wall is greater than 14 in (35.6 cm) , use 3 in (7.6 cm) vent pipe to go through the wall and reduce to 2 in (5.1 cm) vent pipe immediately after exiting the outside wall. Refer to the venting illustrations on the following pages.
If replacing a water heater and the existing vent terminal is identical to the vent terminal supplied with the new water heater, replacement of the vent terminal is not required. The vent terminal should be inspected to make sure that it is in good condition.
12
Venting continued-
Make sure the vent pipe terminal is at least 1 in (2.5 cm) away from the edge of the wall.
TABLE 1
VENT CONNECTOR LENGTHS FOR 2” (5.1cm) DIAMETER VENT PIPE
Terminating # of 90 Elbows
(excluding vent terminal)
Maximum
Straight Length ft (m)
Minimum
Straight Length ft (m)
Through the Wall
Through the Wall
Through the Wall
Through the Wall
Through the Roof
Through the Roof
Through the Roof
Through the Roof
Through the Roof
1
2
3
4
0
1
2
3
4
45
40
35
30
50 (15.2)
45 (13.7)
40
35
30
(13.7)
(12.2)
(10.7)
(9.1)
(12.2)
(10.7)
(9.2)
2
2
2
2
7
7
(.6)
(.6)
(.6)
(.6)
(2.1)
(2.1)
7 (2.1)
7 (2.1)
7 (2.1)
TABLE 2
VENT CONNECTOR LENGTHS FOR 3” (7.6 cm) DIAMETER VENT PIPE
Terminating # of 90 Elbows
(excluding vent terminal)
Maximum
Straight
Length
Minimum
Straight Length ft (m) ft (m)
Through the Wall
Through the Wall
Through the Wall
Through the Wall
Through the Wall
Through the Roof
Through the Roof
Through the Roof
Through the Roof
Through the Roof
1
2
3
4
5
0
1
2
3
4
115
110 (33.5)
105 (32.0)
100 (30.5)
95
120
100
(35)
(29.0)
(36.6)
115 (35)
110 (33.5)
105 (32.0)
(30.5)
10
10
15
15
(3.1)
10 (3.1)
10 (3.1)
10 (3.1)
(3.1)
(4.6)
15 (4.6)
15 (4.6)
15 (4.6)
(4.6)
NOTE: When using 3 in (7.6 cm) vent pipe, use a 3 in (7.6 cm) to 2 in (5.1 cm) reducer and exit the building wall with 2 in (5.1 cm) vent pipe using the 2 in (5.1 cm) 90 vent terminal supplied. Two 45 elbows are equivalent to one 90 elbow. Each 90° elbow is equivalent to 5 ft (1.5 m) of straight vent pipe.
13
Venting continued-
CONNECTION TO 2” (5.1 CM)
VENT PIPE
Figure 2
CONNECTION TO 3” (7.6 CM)
VENT PIPE
IMPORTANT
All of the venting connections must be leak checked with a soap and water solution upon initial start-up of the water heater. Any leaks must be repaired before continuing operation of the water heater.
THROUGH THE WALL VENTING: (HORIZONTAL VENTING):
Cut a 2 1/2 in (6.4 cm) diameter hole in the wall at the point where the vent connector is going to pass through the wall. Use the proper cement to secure the 90° vent terminal provided with the water heater to the vent connector. The distance between the edges of the 90° vent terminal and the exterior wall (see
Figure 3) must be at least 1 in (2.5 cm) . Use the proper cement and assembly procedures to secure the vent connector joints between the terminal and the blower outlet. Provide support brackets for every 5 ft (1.5 m) of horizontal vent.
2” VENT INSTALLATION
Figure 3
3” VENT INSTALLATION
14
Venting continued-
THROUGH THE ROOF VENTING: (VERTICAL VENTING):
Cut the necessary holes through the roof and ceiling and install the vent connector as shown in Figure 4. Make sure that the installation meets the local codes and/or The National Fuel Gas Code ANSI Z223.1 (Latest Edition) or
CGA/CAN B149 Installation Codes (latest edition).
Figure 4
THROUGH THE WALL VENTING WITH LOW GROUND CLEARANCE:
When venting cannot exit through the wall at a height greater than or equal to
12 in (30.5 cm) from the ground or from the anticipated snow level, then the installation must be modified as shown below (see Figure 5). Refer to Table 3 for maximum venting lengths using 2 in (5.1 cm) vent pipe or Table 4 for maximum lengths using 3 in (7.6 cm) vent pipe.
2” VENT INSTALLATION
Figure 5
3” VENT INSTALLATION
15
Venting continued-
NOTE: For installations requiring both horizontal and vertical runs, the following rule must be followed: Total length of straight pipe (both horizontally and vertically) must NOT exceed the allowable length listed in the Table 3 and 4 for total number of elbows used.
TABLE 3
2” (5.1 cm) VENT PIPE LENGTHS FROM INSIDE WALL FOR LOW
GROUND CLEARANCE INSTALLATIONS
Terminating # of
Elbows
1
Max straight
Length ft (m)
30
(9.1)
Min straight
Length ft (m)
2
(.6) (2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
2
3
4
25 (7.6)
20
(6.1)
15
(4.6)
2 (.6)
2
(.6)
2
(.6)
TABLE 4
3” (7.6 cm) VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR
LOW GROUND CLEARANCE INSTALLATIONS
Terminating (Reduce 3” to 2”)
(Reduce 7.6 cm to 5.1 cm)
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
(2) 90 Elbows with Vent Terminal
#of
Elbows
1
2
3
4
5
Maximum
Length ft (m)
100 (
30.5)
95 (29.0)
90 (
27.4)
85
(25.9)
80
(24.4)
Minimum
Length ft (m)
10
(3.1)
10 (3.1)
10
(3.1)
10
(3.1)
10
(3.1)
HIGH ALTITUDE INSTALLATIONS FOR ELEVATIONS OVER 2,500
FEET
(762 m)
ABOVE SEA LEVEL
The capacity of the induced draft blower declines with increasing altitude due to a reduction in the air density. In order to assure safe and reliable performance of the water heater, contact the supplier for high altitude kit.
Vent Pipe Preparation and Joining
Most failures in vent systems result from improper preparation and joining of pipe and fittings. The guidelines below must be followed when installing the venting system. If you have any question about the application or installation of the venting system, contact the vent pipe manufacturer, supplier, or your plumbing professional.
1) Specific cleaners, solvents, primers and cements are available for PVC,
CPVC, and ABS pipe. Be sure these materials match the type of pipe to be installed. The vent pipe manufacturers joining instructions must be followed in all cases. Never use all-purpose cements, commercial glues and adhesives or ABS cement to join PVC or CPVC pipe and fittings. Refer to the table at the beginning of the “Venting” section for approved primers and cements.
16
Vent Pipe Preparation and Joining continued- a) CLEANERS, SOLVENTS, PRIMERS AND CEMENTS ARE
FLAMMABLE. Do not store or use these materials near heat or open flame, or in the vicinity of other appliances.
2) Use proper cutting, deburring and applicator tools to ensure proper preparation and joining of pipe and fittings. a) Cutting Tools i) A square cut must be achieved with a miter box saw or pipe cutter to ensure a proper mating with the female. If a pipe cutter is used, the burr created at the outer edge of the pipe must be removed. b) Deburring Tools i) A file, knife or plastic deburring tool can be used to remove burrs.
Burrs must be removed from the inside and outside edges of the pipe to ensure a proper seal. c) Applicator Tools i) A natural bristle paintbrush or roller may be used to apply cement.
Prompt application of the cement is important due its fast drying properties.
3) Inspection, Cleaning, Priming and Cementing a) Inspect the pipe inside and out for dirt, dust, moisture or grease etc.
Check pipe and fittings for splits or cracks and replace if found. b) Clean pipe and fittings are imperative for proper joining. Following cutting and deburring, wipe away any foreign material with a clean dry rag. If wiping fails to thoroughly clean surfaces, chemical cleaning is necessary. c) Primer must be applied to the pipe surface and fitting socket with a natural bristle brush. This serves to soften and prepare the pipe for cementing. d) Cementing must be done quickly to avoid over-drying before joining. i) Apply one coat to the outside end of the pipe at a width slightly greater than the depth of the socket. ii) Apply a coat around the inside of the fitting socket. iii) Apply a second coat around the end of the pipe.
4) Joining a) Joints should be made immediately after cement is applied. b) After fully inserting pipe into fitting socket, hold joint together for about
15 to 20 seconds. c) Remove excess cement from around pipe and fitting with a clean rag. d) Cement drying times may vary. Be sure to allow for the recommended drying time before disturbing joints.
For more specific and detailed information about the above, contact the vent pipe manufacturer, supplier, or competent professional.
17
Combustion Air Supply
WARNING
Liquefied petroleum gases/propane gases 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 LEAKAGE IS CORRECTED!
IMPORTANT
The flow of combustion and ventilating air must not be obstructed.
Provide adequate air for combustion and ventilation. An insufficient supply of air will cause recirculation of combustion products resulting in air contamination that may be hazardous to life. Such a condition often will result in a yellow, luminous burner flame, causing carbon build up or sooting of the combustion chamber, burners, and flue tubes with possible damage to the water heater.
When an exhaust fan is installed in the same room with a water heater, sufficient openings for air must be provided in the walls. Undersized openings will cause air to be drawn into the room through the venting, causing recirculation of combustion products.
Unconfined Spaces
In unconfined spaces in buildings, infiltration may be adequate to provide air for combustion, ventilation, and dilution of flue gases. However, in buildings of tight construction (heavily insulated, weather stripping, caulked, vapor barrier, etc.) additional air may need to be provided using the methods described below.
Confined Spaces
Confined spaces are spaces defined as having less than 50 ft 3 /1,000 BTU/hr
(4.8 m 3 /kW) of input.
All Air from Inside the Building: The confined space must be provided with two permanent openings communicating directly with an additional room(s) of sufficient volume, so that the combined volume of all spaces meets the criteria for an unconfined space. The total input of all gas utilization equipment installed in the combined space must be considered in making this determination.
18
Combustion Air Supply continued-
Each opening must have a minimum free area of 1 in 2 /1000 BTU/hr (2200 mm 2 /kW) of the total input rating of all gas utilization equipment in the confined space, but not less than 100 in 2
(0.06 m 2 ) . One opening must be within 12 in
(31 cm) of the top and one within 12 in (31 cm) of the bottom of the enclosure.
All Air from Outdoors: Provide two permanent openings, one commencing within 12 in (31 cm) of the top and one commencing within 12 in (31 cm) from the bottom of the enclosure. The openings must communicate directly or by ducts with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors.
1. When communicating with the outdoors through vertical ducts, each opening must have a minimum free area of 1 in 2 /4000 BTU/hr (550 mm 2 /kW) of total input rating of all equipment in the enclosure.
2. When communicating with the outdoors through horizontal ducts, each opening must have a minimum free area of 1 in mm 2 /kW)
2 /2000 BTU/hr (1100
of total input rating of all equipment in the enclosure.
3. When ducts are used, they must be of the same cross-sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts cannot be less than 3 in (8 cm).
Provide one permanent opening, commencing within 12 in (31 cm) of the top of the enclosure. The appliance must have clearance of at least 1 in (3 cm) from the sides and back and 6 in (16 cm) from the front of the appliance. The opening must communicate directly or by ducts with the outdoors or spaces
(crawl or attic) that freely communicate with the outdoors and has a minimum free area of the following:
1. 1 in 2 /3000 BTU/hr (700 mm 2 /kW) of the total input rating of all appliances located in the enclosure.
2. Not less than the sum of the areas of all vent connectors in the space.
Specially Engineered Installations
The requirements noted under CONFINED SPACES above will not necessarily govern when special engineering, approved by the authority having jurisdiction, provides an adequate supply of air for combustion, ventilation, and dilution of flue gases.
19
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.
If this water heater is installed in a closed water supply system, such as 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.
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 THAT MIGHT RESULT
FROM EXCESSIVE TEMPERATURE AND PRESSURES.
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.
20
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, ANS
Z21.22 or the Standard CAN1-4.4. Temperature and Pressure 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 combination temperature and pressure relief valve must also have an hourly rated temperature steam BTU discharge capacity not less than the hourly 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 is in compliance 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 so that water discharged from the combination temperature and pressure relief valve will exit within 6 in (15.2 cm) above, or any distance below the structural floor and cannot 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 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 4 in
(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 valve between the combination temperature and pressure relief valve and the tank.
21
Water Connections continued-
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 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 which 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 clothes 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.
Water temperature over 125°F can cause severe burns instantly or death from scalds.
Children, disabled and elderly are at highest risk of being scalded.
Review this instruction manual before setting temperature at water heater.
Feel water before bathing or showering.
Temperature limiting valves are available.
APPROXIMATE TIME/TEMPERATURE RELATIONSHIPS IN SCALDS
120°F (49°C) More than 5 minutes
125°F (52°C)
130°F (54°C)
1½ to 2 minutes
About 30 seconds
135°F (57°C)
140°F (60°C)
145°F ( 63°C )
150°F (66°C)
155°F (68°C)
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 1½ seconds
About 1 second
22
Gas Connections
WARNING
Prior to connecting the gas supply line to a gas fired water heater, ensure that the gas supply line does not have moisture/water or dirt/scale inside the gas line. Commonly this check is done at the lowest point in the gas distribution system prior to gas burning appliances.
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 1 in (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 14 in (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 3 in (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. 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!
23
Gas Connections continued-
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.
Electrical Connections
All electrical wiring and connections must be in accordance with the National
Electric Code ANSI/NFPA No. 70 (latest edition), or the Canadian Electrical
Code C22.1 (latest edition) and any local codes which may apply. The water heater must be electrically grounded.
If a flexible line cord and plug is permitted by local code, then provide a (3) three wire grounding type receptacle within 6 ft (1.9 m) of the water heater and use the flexible cord provided. Do not plug the line cord into a receptacle that can have its power supply interrupted by a switch that is used to turn on and off lights.
If wiring in conduit is required, cut the flexible line cord flush with the bushing.
Remove the junction box cover and pull the pressure switch outside of the junction box. Cut the three wires from the line cord at the bushing inside of the junction box. Drill a hole to receive the 1/2” electrical conduit connector on the backside of the blower. Wire the power supply into the circuit at the appropriate locations. Replace the pressure switch and junction box cover.
CAUTION
Turn off or disconnect the electrical power supply to the water heater before servicing. Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.
24
Wiring Diagram
Figure 6
25
GENERAL OPERATION
WARNING
Water heaters are heat producing appliances. To avoid damage or injury there must be no materials stored against the water heater or vent-air intake system, and proper care must be taken to avoid unnecessary contact (especially by children) with the water heater and vent-air intake system.
UNDER NO CIRCUMSTANCES SHOULD 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 stem 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. Shut off the gas supply to the water heater.
2. Turn off/disconnect all electric power to the water heater.
3. Close the cold water supply shut-off valve.
4. Open the drain valve on the water heater by turning the stem counterclockwise. The drain valve has threads on the end that will allow the connection of a standard hose coupling.
5. Open a hot water faucet to allow air to enter the system.
To refill the water heater, refer to “To Fill the Water Heater.”
26
Lighting & Shutdown Instructions
27
Thermostat Adjustment
The thermostat dial is adjusted to its lowest setting when shipped from the factory. When adjusting the thermostat, it should be remembered that lower temperature settings are more energy efficient. To adjust the thermostat, turn the dial clockwise until the minimum acceptable temperature is set. It is suggested that the starting point setting not exceed the 120°F (49°C) or “HOT” setting on the thermostat.
NOTE: Taupe / Silver faceplate is approximately 160ºF maximum set point;
Dark (Battleship) Grey faceplate is approximately 180ºF maximum set point.
Figure 7
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 water temperatures 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, turn off the electrical supply to the water heater and contact a qualified service technician.
28
Burner Flame Check
Steel Burner: These models are equipped with self-adjusting air mixture and do not have an adjustable air shutter (see Figure 8). At periodic intervals a visual check of the main burner and pilot flames should be made to determine if they are burning properly. The main burner flame should light smoothly from the pilot.
Figure 8
WARNING
DO NOT run out of propane gas. Damage to the water heater may occur.
MAINTENANCE
WARNING
Water heaters are heat producing appliances. To avoid damage or injury there must be no materials stored against the water heater or vent-air intake system, and proper care must be taken to avoid unnecessary contact (especially by children) with the water heater and vent-air intake system.
UNDER NO CIRCUMSTANCES SHOULD 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.
29
Maintenance continued-
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 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. Clear the combustion air openings of any dirt, dust, or other restrictions.
WARNING
The ventilation air system may be HOT .
3. At all times keep the water heater area clear and free from combustible materials, gasoline and other flammable vapors and liquids.
4. Bi-annually conduct a visual check of the main and pilot burner flames to determine that they are burning properly. See Burner Flame Check section on page 29. If sooting or other burner anomalies are evident, shut down the water heater by turning off the gas per the instructions listed in this manual or as listed on the water heater.
5. 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. NOTE: It is imperative for proper operation of the water heater that the inner door be replaced in the original location.
30
Maintenance continued-
Do not block or in any way restrict jacket air inlet slots located at the bottom front of the water heater.
Do not operate water heater with jumpered, altered, loosely tightened or absent controls and/or components.
Do not operate water heater with replacement controls and/or components which are not exact duplicates of original equipment.
Thoroughly inspect and replace, (as needed) burner inner door gasket and/or sight window gasket any time burner inner door is removed or disturbed.
Replace water heater if involved in flammable vapor incident.
This water heater is equipped with a flammable vapor sensor. If the sensor is exposed to flammable vapor, the water heater control will shut down the water heater and display a code of 7 flashes and then a 3 second pause.
If a 7 flash error code is present, check to see if flammable vapor is present in the area. If flammable vapor is present or suspected in the area, immediately leave the area and contact a service professional.
Do not try to light any appliance.
Do not touch any electric switch; do not use any phone in your building.
If you are certain there is no flammable vapor present, check the flammable vapor sensor to make certain it has not become disconnected from the control.
See the instruction manual for troubleshooting.
31
Maintenance continued-
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.
6. At least once a year, check the combination temperature and pressure relief valve to ensure that the valve has not become encrusted with lime.
Lift the lever at the top of the valve several times until the valve seats properly without leaking and operates freely.
WARNING
7. Monthly drain off a gallon of water to remove silt and sediment.
Do not run out of propane gas. Damage to the water heater may occur.
WARNING
THIS WATER MAY BE HOT.
8. 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.
9. A combination sacrificial anode rod/hot water outlet nipple has been installed to extend tank life. The anode rod should be inspected periodically
(every 2 years) and replaced when necessary to prolong tank life. Water conditions in your area will influence the time interval for inspection and replacement of the anode rod. 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.
10. The blower has sealed motor bearings and does NOT require adding oil.
32
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: 5,277,171;
5,341,770; 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; 6,056,542;
6,142,216; 6,442,178; 6,684,821; 6,935,280; 7,063,132; 7,063,133;
7,007,748; 7,270,087; 7,334,419; 7,337,517; 7,409,925; 7,458,341;
7,559,293; 7,621,238; 7,634,976; 7,650,859; 7,665,210; 7,665,211;
7,699,026; 7,866,168; 7,900,589; 7,971,560; 7,992,526 8,082,888;
8,146,772; Other U.S. and Foreign patent applications pending. Current
Canadian Patents: 2,092,105; 2,107,012; 2,108,186; 2,112,515; 2,143,031;
2,239,007; 2,262,174; 2,314,845; 2,409,271; 2,476,685; 2,504,824;
2,548,958
Complete the following information and retain for future reference:
Model No: ___________________________________________________
Serial No: ____________________________________________________
Service Phone
Days: ________________________ Nights: _________________________
Address: _____________________________________________________
Supplier: ______________________________________________________
Supplier Phone No: _____________________________________________
33
Troubleshooting
LED Status Control Status
None (LED not on or flashing)
One short flash every four seconds
Electrical power not present.
Stand-by mode,
Thermostat is satisfied (no faults).
Alternates bright and dim
(Heartbeat)
Thermostat calling for heat (no fault).
Probable Cause
Control power switch in “OFF” position.
Supply voltage interrupted.
Temperature demand is satisfied (no call for heat).
Tank temperature below set point of thermostat.
Short flash once every second
Short flash once every two seconds
Weak pilot signal on last call for heat.
Idle remote command off.
1. Unstable pilot.
2. Pilot tube block or restricted.
3. Oxidation build up on pilot electrode.
4. Wire damage to pilot assembly or bad connection at gas valve.
1. Control put in idle or Sabbath mode from accessory module.
Two flashes, three second pause
Pressure switch not working-closed position.
1. Pressure switch tubing kinked or blocked.
2. Blocked pressure tap on switch.
3. Faulty pressure switch.
Three flashes, three second pause
Four flashes, three second pause
Five flashes, three second pause
Six flashes-one flash, three second pause
(Soft lockout)
Pressure switch or blower temperature switch not working
-open position.
Excessive tank temperature.
System must be reset.
False pilot flame present.
1. Vent blockage or improper vent configuration.
2. Pressure switch tubing kinked or blocked.
3. Blower not spinning up to speed.
4. Vent temperature too high.
5. Faulty pressure switch or vent limit switch.
1. Excessive sediment.
2. Hot water entering the tank from another
source in the potable loop.
3. Faulty gas valve.
1. Pilot valve stuck in open position.
Failed to light pilot.
System auto resets after 5 minutes.
1. Unstable pilot.
2. Pilot tube blocked or restricted.
3. Oxidation build up on pilot electrode.
4. Wire damage to pilot assembly or bad connection at gas valve.
34
Troubleshooting continued-
LED Status Control Status
Six flashes-two flashes, three second pause
(Soft lockout)
Pressure switch or blower temperature switch opened during burner operation.
System auto resets after 5 minutes.
Six flashes-three flashes, three second pause
(Soft lockout)
Pilot flame extinguished.
System resets after 5 minutes.
Probable Cause
1. Pressure switch tubing kinked or blocked.
2. Vent blockage or improper vent configuration.
3. Vent termination being affected by windy
conditions.
4. Blower not spinning up to speed.
5. Vent temperature too high.
6. Faulty pressure switch or blower temp. switch.
1. Unstable pilot.
2. Pilot tube blocked or restricted.
3. Oxidation build up on pilot electrode.
4. Wire damage to pilot assembly or bad
connection at gas valve.
5. Insufficient combustion air.
Six flashes-four flashes, three second pause
(Soft lockout)
Undesired-false pilot flame sensed.
System auto resets.
Pilot valve stuck in open position.
Seven flashes, three second pause
Flammable vapor sensor fault detected, see warning label.
1. Flammable vapor present.
2. Flammable vapor sensor exposed to excessive moisture.
3. Flammable vapor sensor exposed to extreme ambient temperature.
Eight flashes-one flash, three second pause
Flammable vapor sensor out of specification.
Possible short.
1. Flammable vapor sensor out of specification.
2. Possible short.
Eight flashes, two flashes, three second pause
Eight flashes-three flashes, three second pause
Eight flashes-four flashes, three second pause
Temperature sensor fault.
Electronics fault detected.
Gas valve fault detected.
1. Damage to sensor or wire in control’s well.
2. Control’s sensor resistance out of range.
3. Replace Control.
1. Verify control is not wet or physically damaged.
2. Reset control on/off switch.
3. Replace electronic module if 8-3 error persists.
1. Verify control is not wet or physically damaged.
2. Reset control on/off switch.
3. Replace gas control if 8-4 error persists.
35
Troubleshooting continued-
Control Sequence of Operation
Start up Sequence
Upon powering up, the control checks for the presence of the vapor sensor, if the resistance is in the expected range the control will begin normal operation after 5 to 8 seconds.
Normal Heating Sequence
1. The thermostat senses a need for heat.
2. The control checks the pressure switch condition.
3. If the pressure switch is open, the control sends power to the blower motor.
4. The blower starts moving combustion air through the combustion system.
5. The pressure switch closes.
6. The control senses the closed pressure switch and starts the ignition process by providing a spark at the pilot electrode and allowing gas to flow to the pilot.
7. When the pilot is lit, the gas control senses the pilot flame and opens the main gas valve.
8. The main burner is lit.
9. The main burner and blower continue to operate until the thermostat is satisfied.
10. When the thermostat is satisfied the main and pilot gas valves close.
11. The blower operates for a short post purge period before shutting down.
12. The water heater remains in the stand-by mode until the next call for heat.
36
PARTS DIAGRAM
PART NAME AND DESCRIPTION
1. Blower Assembly 12. Anode–Nipple
2. Temp. Switch
3. Pressure Switch
4. Flue Baffle
5. Honeywell Gas Control Valve
6. Drain Valve
13. T&P Relief Valve Opening
14. Pilot Assembly
15. Main Burner Orifice
16. Gas Feedline
17. Flammable Vapors Sensor
7. Fiberglass Insulation (not shown) 18. Sensor Harness
8. Foam Insulation (not shown) 19. Blower Harness
9. Outer Door 20. Inner Door Assembly
10. Steel Burner
11. Diptube-Nipple
21. Adapter
22. Vapor sensor bracket
37
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 ft.
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 uses, an ASSE approved mixing valve shall be installed to temper the water for those uses in order to reduce scald hazard potential.
Please refer to the illustrations below for the suggested piping arrangement.
38
NOTES
39
NOTES
40
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