Master-Fit® Booster Manual (196308)

Master-Fit® Booster Manual (196308)
Instruction Manual
commercial gas water heaters
MODELS BTR(C) 151, BTR(C) 201
SERIES 100/101
INSTALLATION - OPERATION - SERVICE
- MAINTENANCE - LIMITED WARRANTY
500 Tennessee Waltz Parkway
Ashland City, TN 37015
Low Lead Content
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
Do not store or use gasoline or other
flammable 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;
not use any phone in your building.
do
• 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.
Thank you for buying this energy efficient water heater.
We appreciate your confidence in our products.
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater.
place these instructions adjacent to heater and notify owner to keep for future reference.
PRINTED 0912
196308-002
Table Of Contents
Safe Installation, Use and Service.......................................... 3
Outdoor Air Through Two Vertical Ducts........................................... 17
APPROVALS........................................................................................... 3
Air From Other Indoor Spaces.......................................................... 17
General Safety Information....................................................... 4
Technical Data Venting..................................................................... 18
Precautions......................................................................................... 5
Water heater installation......................................................... 19
Grounding Instructions....................................................................... 5
Water Line Connections................................................................... 19
Hydrogen Gas Flammable.................................................................. 5
Thermometers (not Supplied)........................................................... 19
Introduction..................................................................................... 6
Water Piping Diagrams..................................................................... 19
Abbreviations Used............................................................................ 6
T&P Valve Discharge Pipe................................................................ 19
Qualifications...................................................................................... 6
Installation Diagrams - Top Inlet/Outlet Usage................................. 20
Preparing for the Installation............................................................... 6
Heater Wiring.................................................................................... 21
Features and components.......................................................... 7
Gas Piping........................................................................................ 22
The Eliminator (self-cleaning system)................................................ 7
Supply Gas Regulator...................................................................... 22
High Limit Switch................................................................................ 7
Gas Line Leak Testing...................................................................... 22
Electronic Ignition Control................................................................... 7
Purging............................................................................................. 22
Exhaust Inducer (blower assy.).......................................................... 7
Start Up............................................................................................. 23
Uncrating............................................................................................ 7
Prior to Start Up................................................................................ 23
Installation considerations...................................................... 8
Initial Start Up................................................................................... 23
Rough In Dimensions......................................................................... 8
Checking Venting.............................................................................. 24
Recovery Capacities........................................................................... 8
Gas Valves........................................................................................ 24
Gas and Electrical Characteristics...................................................... 8
Checking the Input............................................................................ 24
Locating the Water Heater.................................................................. 9
Water Temperature Adjustment........................................................ 24
Clearances......................................................................................... 9
SEQUENCE OF OPERATION.............................................................. 25
Installation On Combustible Flooring................................................ 10
Lighting & Operation Label............................................................... 25
Insulation Blanket............................................................................. 10
Sequence of Operation Flow Chart.................................................. 26
Hard Water....................................................................................... 10
Maintenance.................................................................................... 27
Circulation Pumps............................................................................ 10
Check the Igniter Assembly and Main Burners................................. 27
High Altitude Installations..................................................................11
Propane Installations.........................................................................11
Igniter Assembly............................................................................... 27
Natural Gas Installations...................................................................11
Main Burner...................................................................................... 27
Installation Requirements....................................................... 12
Venting System................................................................................. 27
Gas Supply Systems........................................................................ 12
Remote Storage Tank Temperature Control..................................... 27
Gas Pressure Requirements............................................................ 12
Temperature-Pressure Relief Valve Test.......................................... 27
Supply Gas Regulator...................................................................... 12
Hot Water Odor................................................................................. 28
Power Supply................................................................................... 12
Anode Rod Inspection...................................................................... 28
Water Temperature Control and Mixing Valves................................ 12
Draining and Flushing....................................................................... 28
Dishwashing Machines..................................................................... 13
Recommended Procedure for Periodic Removal of Lime Deposits
from Tank Type Commercial Water Heaters..................................... 28
Closed Water Systems..................................................................... 13
Deliming Solvents............................................................................. 29
Thermal Expansion........................................................................... 13
Tank Cleanout Procedure................................................................. 29
Temperature-Pressure Relief Valve.................................................. 13
Deliming Using FLO-JUG Method.................................................... 29
Contaminated Air.............................................................................. 14
SERVICE............................................................................................... 31
Air Requirements.............................................................................. 14
Ignition Control System.................................................................... 31
Unconfined Space............................................................................ 15
System Diagnostics.......................................................................... 31
Confined Space................................................................................ 15
Electrical Servicing........................................................................... 31
Vent Adapter..................................................................................... 15
For your information.................................................................. 32
Venting INSTALLATION.................................................................... 15
Start Up Conditions.......................................................................... 32
Venting.............................................................................................. 15
Operational Conditions..................................................................... 32
Multiple Heater Manifold................................................................... 16
Troubleshooting.......................................................................... 33
Fresh Air Openings For Confined Spaces........................................ 16
Water Piping Diagrams................................................................. 34
Outdoor Air Through Two Openings................................................. 16
Manifold Kits................................................................................... 49
Outdoor Air Through One Opening................................................... 16
Limited Warranty........................................................................... 50
Outdoor Air Through Two Horizontal Ducts...................................... 16
Notes.................................................................................................. 51
2
Safe Installation, Use and Service
The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others.
Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and
others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual. It is very important
that the meaning of each safety message is understood by you and others who install, use, or service this water heater.
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injury or death.
DANGER
DANGER indicates an imminently
hazardous situation which, if not avoided,
will result in injury or death.
WARNING
WARNING indicates a potentially hazardous
situation which, if not avoided, could result
in injury or death.
CAUTION
CAUTION indicates a potentially hazardous
situation which, if not avoided, could result in
minor or moderate injury.
CAUTION
CAUTION used without the safety alert
symbol indicates a potentially hazardous
situation which, if not avoided, could result in
property damage.
All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message, and
how to avoid the risk of injury.
The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances
known to the State of California to cause cancer, birth defects, or other reproductive harm, and requires businesses to warn of
potential exposure to such substances.
This product contains a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm. This
appliance can cause low level exposure to some of the substances listed in the Act.
APPROVALS
3
General Safety Information
Fire or Explosion Hazard
Fire Hazard
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
For continued protection against
risk of fire:
Avoid all ignition sources if you smell gas.
Do not expose water heater controls to excessive gas
pressure.
Do not install water heater on
carpeted floor.
Do not operate water heater if
flood damaged.
Use only the gas shown on the water heater rating label.
Maintain required clearances to combustibles.
Keep ignition sources away from faucets after extended
periods of non-use.
Fire and Explosion Hazard
Read instruction manual before
installing, using or servicing
water heater.
Use joint compound or Teflon tape
compatible with propane gas.
Leak test before placing the
water heater in operation.
Disconnect gas piping and main
gas shutoff valve before leak
testing.
Install sediment trap in
accordance with NFPA 54.
Breathing Hazard - Carbon Monoxide Gas
Do not obstruct water heater air intake
with insulating blanket.
Gas and carbon monoxide detectors
are available.
Fire and Explosion Hazard
Install water heater in accordance with
the instruction manual.
Do not use water heater with any gas
other than the gas shown on the rating
label.
Excessive gas pressure to gas valve can
cause serious injury or death.
Turn off gas lines during installation.
Contact a qualified installer or service
agency for installation and service.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
CAUTION
Property Damage Hazard
• All water heaters eventually leak.
• Do not install without adequate drainage.
Jumping out control circuits or components can
result in property damage, personal injury or death.
•
•
Electrical Shock Hazard
•
Turn off power to the water heater
before performing any service.
•
Label all wires prior to disconnecting
when performing service. Wiring errors
can cause improper and dangerous
operation.
•
•
Verify proper operation after servicing.
•
Service should only be performed by a qualified service
agent using proper test equipment.
Altering the water heater controls and/or wiring in any way
could result in permanent damage to the controls or water
heater and is not covered under the limited warranty.
Altering the water heater controls and/or wiring in any way
could result in altering the ignition sequence allowing gas to
flow to the main burner before the hot surface igniter is at
ignition temperature causing delayed ignition which can
cause a fire or explosion.
Any bypass or alteration of the water
heater controls and/or wiring will result
in voiding the appliance warranty.
Failure to follow these instructions can
result in personal injury or death.
4
General Safety Information
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Explosion Hazard
Overheated water can cause
water tank explosion.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
Properly sized temperature and
pressure relief valve must be
installed in the opening provided.
This manual must remain with the
water heater.
CAUTION
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
Improper installation, use and service may result
in property damage.
Children, the elderly and the
physically or mentally disabled are at
highest risk for scald injury.
•
•
•
•
•
Feel water before bathing or
showering.
Temperature limiting devices such as
mixing valves must be installed
when required by codes and to
ensure safe temperatures at fixtures.
Do not operate water heater if flood damaged.
Inspect and anode rods regularly, replace if damaged.
Install in location with drainage.
Fill tank with water before operation.
Properly sized thermal expansion tanks are required on all
closed water systems.
Refer to this manual for installation and service.
Verify the power to the water heater is turned off before performing any service procedures.
General Safety Information
Precautions
Hydrogen Gas Flammable
DO NOT USE THIS water heater IF ANY PART HAS BEEN
UNDER WATER. Immediately call a qualified service agency to
inspect the water heater and to make a determination on what
steps should be taken next.
Explosion Hazard
If the unit is exposed to the following, do not operate heater
until all corrective steps have been made by a qualified
service agency.
Flammable hydrogen gases
may be present.
1. External fire.
Keep all ignition sources away
from faucet when turning on
hot water.
2. Damage.
3. Firing without water.
Hydrogen gas can be produced in a hot water system served
by this water heater that has not been used for a long period of
time (generally two weeks or more). Hydrogen gas is extremely
flammable. To reduce the risk of injury under these conditions, it is
recommended that a hot water faucet served by this appliance be
opened for several minutes before using any electrical appliance
connected to the hot water system. If hydrogen is present there
will probably be an unusual sound such as air escaping through
the pipe as the water begins to flow. There should be no
smoking or open flame near the faucet at the
time it is open.
Grounding Instructions
This water heater must be grounded in accordance with the
National Electrical Code and/or local codes. These must be
followed in all cases.
This water heater must be connected to a grounded permanent
wiring system; or an equipment grounding conductor must
be run with the circuit conductors and connected to the
equipment grounding terminal or lead on the water heater,
see Figure 19.
5
Introduction
PREPARING FOR THE INSTALLATION
Thank You for purchasing this water heater. Properly installed
and maintained, it should give you years of trouble free service.
1. Read the “General Safety” section, page 4 of this manual
first and then the entire manual carefully. If you don’t follow
the safety rules, the water heater will not operate properly.
It could cause DEATH, SERIOUS BODILY INJURY AND/OR
PROPERTY DAMAGE.
This manual contains instructions for the installation, operation,
and maintenance of the gas-fired water heater. It also contains
warnings throughout the manual that you must read and be
aware of. All warnings and all instructions are essential to the
proper operation of the water heater and your safety. Since
we cannot put everything on the first few pages, READ THE
ENTIRE MANUAL BEFORE ATTEMPTING TO INSTALL OR
OPERATE THE WATER HEATER.
2. The installation must conform with these instructions and the local
code authority having jurisdiction. In the absence of local codes,
the installation must comply with the current editions of the National
Fuel Gas Code, ANSI Z223.1/NFPA 54 or CAN/CSA-B149.1
the Natural Gas and Propane Installation Code. All documents
are available from the Canadian Standards Association, 8501
East Pleasant Valley Road, Cleveland, OH 44131. NFPA
documents are also available from the National Fire Protection
Association, 1 Batterymarch Park, Quincy, MA 02269.
3. If after reading this manual you have any questions or do not
understand any portion of the instructions, call the local gas utility
or the manufacturer whose name appears on the rating plate.
4. Carefully plan the place where you are going to put the water
heater. Correct combustion, vent action, and vent pipe installation
are very important in preventing death from possible carbon
monoxide poisoning and fires, see Figures 6, 11 and 12. Examine
the location to ensure the water heater complies with the “Locating
the New Water Heater” section in this manual.
5. 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 California Office of the State
Architect, 400 P Street, Sacramento, CA 95814.
6. Massachusetts Code requires this water heater to be installed in
accordance with Massachusetts 248-CMR 2.00: State Plumbing
Code and 248-CMR 5.00.
Abbreviations Used
Abbreviations found in this Instruction Manual include :
• ANSI - American National Standards Institute
• ASME - American Society of Mechanical Engineers
• AHRI - Air-Conditioning, Heating and Refrigeration Institute
• NEC - National Electrical Code
• NFPA - National Fire Protection Association
• UL - Underwriters Laboratory
• CSA - Canadian Standards Association
Qualifications
Qualified Installer or Service Agency
Installation and service of this water heater requires ability
equivalent to that of a Qualified Agency (as defined by ANSI
below) in the field involved. Installation skills such as plumbing,
air supply, venting, gas supply and electrical supply are required
in addition to electrical testing skills when performing service.
ANSI Z223.1 2006 Sec. 3.3.83: “Qualified Agency” - “Any
individual, firm, corporation or company that either in person
or through a representative is engaged in and is responsible
for (a) the installation, testing or replacement of gas piping
or (b) the connection, installation, testing, repair or servicing
of appliances and equipment; that is experienced in such
work; that is familiar with all precautions required; and that
has complied with all the requirements of the authority having
jurisdiction.”
If you are not qualified (as defined by ANSI above) and licensed
or certified as required by the authority having jurisdiction
to perform a given task do not attempt to perform any of the
procedures described in this manual. If you do not understand
the instructions given in this manual do not attempt to perform
any procedures outlined in this manual.
6
Features and components
The Eliminator (self-cleaning system)
Electronic Ignition Control
These units include The Eliminator (Self-Cleaning System)
installed in the front water inlet, See Figure 1. The Eliminator inlet
tube can only be used in the front water inlet connection. Do not
install the Eliminator inlet tube in either the top or back inlet water
connection. The Eliminator must be oriented correctly for proper
function. There is a marked range on the pipe nipple portion of
the Eliminator, that must be aligned with the top of the inlet spud.
A label above the jacket hole has an arrow that will point to the
marked portion of the pipe nipple if the orientation is correct. If
the arrow does not point within the marked range on the pipe
nipple, adjust the pipe nipple to correct. A pipe union is supplied
with the Eliminator to reduce the probability of misaligning the
Eliminator accidentally while tightening the connection to the
inlet water supply line. Improper orientation of the Eliminator
can cause poor performance of the heater and can significantly
reduce outlet water temperatures during heavy draws.
Each heater is equipped with an ignition control. The solid state
ignition control (Figure 3), ignites the main burner by utilizing a
silicon nitride igniter. The silicon nitride igniter shuts off during
the heating cycle and the main burner flame is sensed through
a remote flame sensor integral to the silicon nitride igniter
assembly.
The ignition control will try to ignite the main burner three times
before lockout. Then it waits one hour before trying again to ignite
the main burners. This is a continuous cycle.
Note: The Eliminator may have 1, 3 or 7 cross tubes.
FIGURE 1.
High Limit Switch
IGNITION CONTROL
The digital thermostat (Figure 2) contains the high limit (energy
cutout) switch. The high limit switch interrupts main burner gas
flow should the water temperature reach 203°F (95°C).
FIGURE 3.
Exhaust Inducer (blower assy.)
In the event of high limit switch operation, the water heater
cannot be restarted unless the water temperature is reduced to
approximately 120°F (49°C). The high limit reset button on the
front of the control then needs to be depressed.
All models are equipped with an exhaust inducer. The inducer
assists in drawing in fresh air to the unit for combustion and then
assists in dispensing the combustion by-products into the venting
leading outside.
Continued manual resetting of high limit control, preceded by
higher than usual water temperature is evidence of high limit
switch operation. The following is a possible reason for high limit
switch operation:
The exhaust inducer is equipped with a gravity controlled damper
to reduce the amount of heat loss through the flue, improving
efficiency.
• A malfunction in the thermostatic controls would allow the gas
valve to remain open causing water temperature to exceed the
thermostat setting. The water temperature would continue to
rise until high limit switch operation.
Contact your dealer or qualified service agency if continued high
limit switch operation occurs.
EXHAUST INDUCER
FIGURE 4.
Uncrating
The heater is shipped with the inducer already installed. The
wiring conduit runs from the thermostat to the inducer. Before
turning unit on, check to make sure the wiring conduit is securely
plugged into the inducer.
DIGITAL THERMOSTAT
FIGURE 2.
7
Installation considerations
Rough In Dimensions
FIGURE 5.
TABLE 1. HEATER PERFORMANCE DATA (Recovery ratings based on 80% thermal efficiency)
Input
Rate
Btuh
Model
BTR(C)-151
BTR(C)-151
BTR(C)-201
BTR(C)-201
Approx.
Approx.
Tank
Eff . %
Cap.
150,000 NAT
32 Gal
44 kW/Hr. NAT 121 Litres
150,000 LP
32 Gal
44 kW/Hr. LP 121 Litres
199,900 NAT
32 Gal
59 kW/Hr. NAT 121 Litres
182,000 LP
32 Gal
53 kW/Hr. LP
121 Litres
80
RECOVERY RATING CAPACITIES (GPH) AT TEMPERATURE RISE SHOWN
F
C
GPH
LPH
80
GPH
LPH
80
GPH
LPH
80
GPH
LPH
20°F 30°F 40°F 50°F 60°F 70°F 80°F 90°F 100°F 110°F 120°F 130°F 140°F
11°C 17°C 22°C 28°C 33°C 39°C 44°C 50°C 56°C 61°C 67°C 72°C 78°C
291
242
208
182
162
145
132
121
112
104
2752 1836 1378 1102
727
916
787
689
613
549
500
458
424
394
727
485
364
291
242
208
182
162
145
132
121
112
104
2752 1836 1378 1102
916
787
689
613
549
500
458
424
394
323
277
242
215
194
176
162
149
139
3668 2445 1836 1469 1223 1049 916
814
734
666
613
564
526
969
882
485
364
646
485
588
441
388
353
294
252
221
196
177
160
147
136
126
3339 2226 1669 1336
1113
954
837
742
670
606
557
515
477
TABLE 2. GAS AND ELECTRICAL CHARACTERISTICS
Model
Gas Type
Gas Supply Pressure
Minimum
Maximum
Gas Manifold
Pressure
Volts / Hz
Amperes
BTR(C) 151/201
Natural
5.6" W.C. (1.39 kPa)
14" W.C. (3.48 kPa)
3.5" W.C. (0.87 kPa)
120/60
<5
BTR(C) 151/201
Propane
11" W.C. (2.74 kPa)
14" W.C. (3.48 kPa)
10" W.C. (2.49 kPa)
120/60
<5
8
Installation Considerations
Locating the Water Heater
IS NOT SUBJECT TO PHYSICAL DAMAGE BY A MOVING
VEHICLE.
CAUTION
FLAMMABLE ITEMS, PRESSURIZED CONTAINERS OR ANY
OTHER POTENTIAL FIRE HAZARDOUS ARTICLES MUST
NEVER BE PLACED ON OR ADJACENT TO THE HEATER.
OPEN CONTAINERS OR FLAMMABLE MATERIAL SHOULD
NOT BE STORED OR USED IN THE SAME ROOM WITH THE
HEATER.
Property Damage Hazard
• All water heaters eventually leak.
• Do not install without adequate drainage.
THE HEATER MUST NOT BE LOCATED IN AN AREA WHERE
IT WILL BE SUBJECT TO FREEZING.
When installing the heater, consideration must be given to
proper location. Location selected should be as close to the
stack or chimney as practicable, with adequate air supply and as
centralized with the piping system as possible.
LOCATE IT NEAR A FLOOR DRAIN. THE HEATER SHOULD
BE LOCATED IN AN AREA WHERE LEAKAGE FROM THE
HEATER OR CONNECTIONS WILL NOT RESULT IN DAMAGE
TO THE ADJACENT AREA OR TO LOWER FLOORS OF THE
STRUCTURE.
Fire or Explosion Hazard
WHEN SUCH LOCATIONS CANNOT BE AVOIDED, A SUITABLE
DRAIN PAN SHOULD BE INSTALLED UNDER THE HEATER.
Such pans should be fabricated with sides at least 2” deep, with
length and width at least 2” greater than the diameter of the
heater and must be piped to an adequate drain. The pan must
not restrict combustion air flow.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Clearances
Avoid all ignition sources if you smell gas.
Do not expose water heater controls to excessive gas
pressure.
This water heater is approved for installation on combustible
flooring (with NSF Leg Kit #9003425205) in an alcove when the
minimum clearance from any combustible construction is as
indicated in Figure 6 and Table 3.
Use only the gas shown on the water heater rating label.
Maintain required clearances to combustibles.
In all installations the minimum combustible clearances from
vent piping shall be 6” (15.2 cm). Vent piping passing through a
combustible wall or ceiling must be a continuous run (no joints)
and retain the 6” (15.2 cm) clearance unless an approved reducing
thimble is used.
Keep ignition sources away from faucets after extended
periods of non-use.
Read instruction manual before
installing, using or servicing
water heater.
A service clearance of at least 24” (61 cm) should be maintained
from serviceable parts.
The units are approved for installation with side, rear and ceiling
clearances as indicated below:
THERE IS A RISK IN USING FUEL BURNING APPLIANCES
SUCH AS GAS WATER HEATERS IN ROOMS, GARAGES OR
OTHER AREAS WHERE GASOLINE, OTHER FLAMMABLE
LIQUIDS OR ENGINE DRIVEN EQUIPMENT OR VEHICLES ARE
STORED, OPERATED OR REPAIRED. FLAMMABLE VAPORS
ARE HEAVY AND TRAVEL ALONG THE FLOOR AND MAY BE
IGNITED BY THE HEATER’S PILOT OR MAIN BURNER FLAMES
CAUSING FIRE OR EXPLOSION. SOME LOCAL CODES
PERMIT OPERATION OF GAS APPLIANCES IN SUCH AREAS
IF THEY ARE INSTALLED 18” OR MORE ABOVE THE FLOOR.
THIS MAY REDUCE THE RISK IF LOCATION IN SUCH AN AREA
CANNOT BE AVOIDED.
TABLE 3.
MINIMUM CLEARANCES TO COMBUSTIBLES IN INCHES (mm)
MODEL
BTR(C) 151/201
"A"
"B"
RIGHT
LEFT
SIDE
SIDE
2"
(5.1 cm)
2"
(5.1 cm)
"C"
"D"
BACK
CEILING
2"
(5.1 cm)
12"
(30.5 cm)
TABLE 4.
DO NOT INSTALL THIS WATER HEATER DIRECTLY ON A
CARPETED FLOOR. A FIRE HAZARD MAY RESULT. Instead the
water heater must be placed on a metal or wood panel extending
beyond the full width and depth by at least 3 inches in any direction.
If the heater is installed in a carpeted alcove, the entire floor shall
be covered by the panel. Also, see the DRAINING requirements
in MAINTENANCE Section.
MINIMUM CLEARANCES TO NONCOMBUSTIBLE CONSTRUCTION
MODEL
BTR(C) 151/201
THE HEATER SHALL BE LOCATED OR PROTECTED SO IT
9
"A"
"B"
RIGHT
LEFT
SIDE
SIDE
0
0
"C"
"D"
BACK
CEILING
0
12"
(30.5 cm)
Insulation Blanket
Breathing Hazard - Carbon Monoxide Gas
Do not obstruct water heater air intake
with insulating blanket.
Gas and carbon monoxide detectors
are available.
Install water heater in accordance with
the instruction manual.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Insulation blankets are available to the general public for external
use on gas water heaters but are not necessary with these
products. The purpose of an insulation blanket is to reduce the
standby heat loss encountered with storage tank heaters. The
water heaters covered by this manual meet or exceed the Energy
Policy Act standards with respect to insulation and standby heat
loss requirements, making an insulation blanket unnecessary.
Should you choose to apply an insulation blanket to this
heater, you should follow these instructions. See the Features
and Components section of this manual for identification of
components mentioned below. Failure to follow these instructions
can restrict the air flow required for proper combustion, potentially
resulting in fire, asphyxiation, serious personal injury or death.
FIGURE 6.
Installation On Combustible Flooring
• DO NOT apply insulation to the top of the water heater, as this
will interfere with safe operation of the exhaust inducer.
These models are approved for installations on combustible flooring
when installed with NSF Leg Kit number 9003425205. The installed
height of the water heater will increase by 3" when the leg kit is installed.
• DO NOT cover the gas valve, thermostat or the TemperaturePressure Relief Valve.
• DO NOT allow insulation to come within 2” (5 cm) of the burners,
to prevent blockage of combustion air flow to the burners.
• DO NOT allow insulation to come within 9 inches (23 cm)
of floor, (within 2 inches (5 cm) of bottom cover) to prevent
blockage of combustion air flow to the burners..
• DO NOT cover the instruction manual. Keep it on the side of
the water heater or nearby for future reference.
• DO obtain new warning and instruction labels from the
manufacturer for placement on the blanket directly over the
existing labels.
• DO inspect the insulation blanket frequently to make certain it
does not sag, thereby obstructing combustion air flow.
Hard Water
Where hard water conditions exist, water softening or the
threshold type of water treatment is recommended. This will
protect the dishwashers, coffee urns, water heaters, water piping
and other equipment.
FIGURE 7.
1. Unit needs to be lifted in a way not to damage unit or laid
on it’s side to access the bottom of the legs.
See the Maintenance Section in this manual for sediment and
lime scale removal procedures.
2.Slide leg extension under leg and the bolt up through the
bottom hole located in the bottom of the leg.
Circulation Pumps
3. Once in place, screw nut down and secure.
A circulating pump is used when a system requires a circulating
loop or there is a storage tank used in conjunction with the water
heater. See Water Piping Diagrams in this manual for installation
location of circulating pumps.
4. Front of leg should line up with front of leg extension as
shown in Figure 7 to make sure weight of unit is distributed
through the leg extension.
10
ON
See the Circulation Pump Wiring Diagrams (Figure 8, Figure
9) in this manual for electrical hookup information. Install in
accordance with the current edition of the National Electrical
Code, NFPA 70 or the Canadian Electrical Code, CSA C22.1.
Breathing Hazard - Carbon Monoxide Gas
All-bronze or stainless steel circulating pumps are recommended
for use with commercial water heaters.
Under no circumstances should
the input exceed the rate shown
on the water heater’s rating label.
Some circulating pumps are manufactured with sealed bearings
and do not require further lubrication. Some circulating pumps
must be periodically oiled. Refer to the pump manufacturer’s
instructions for lubrication requirements.
Overfiring could result in damage to
the water heater and sooting.
CIRCULATING PUMP WIRING DIAGRAM
DISHWASHER LOOP
WITH
TOGGLE
SWITCH
Gas and
carbon
monoxide
detectors
CIRCULATING PUMP WIRING DIAGRAM
STORAGE TANK OR BUILDING RECIRCULATION
NOTE: USE SEPARATE 120 VAC POWER
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH APPLIANCE AS THIS
MAY CAUSE ELECTRICAL LINE NOISE AND
LEAD TO ERRATIC CONTROL SYSTEM
OPERATION.
are available.
DISHWASHER
FIELD SUPPLIED TEMPERATURE
TOGGLE
CONTROL INSTALLED IN THE
SWITCH
CIRCULATING
LOOP
RETURN or
LINE
carbon
monoxide can
cause brain
damage
FIELD SUPPLIED TEMPERATURE CONTROL
INSTALLED IN THE STORAGE TANK
OR CIRCULATING LOOP RETURN LINE
Breathing
death. Always read and understand instruction manual.
NOTE: USE SEPARATE 120 VAC POWER
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH APPLIANCE AS THIS
MAY CAUSE ELECTRICAL LINE NOISE AND
LEAD TO ERRATIC CONTROL SYSTEM
OPERATION.
INSTALLATIONS ABOVE 2000 FEET (610 METERS)
REQUIRE
L1 HOTREPLACEMENT OF BURNER ORIFICES IN
ACCORDANCE WITH
CURRENT EDITION OF THE
NATIONAL FUEL GAS CODE (ANSI Z223.1). FOR
120 VAC
CANADIAN POWER
INSTALLATIONS CONSULTCIRC CANADIAN
PUMP
INSTALLATIONS CODE CAN/CSA B149.1.
MOTOR FAILURE
TO REPLACE ORIFICES WILL RESULT IN IMPROPER
L2 NEUTRAL
AND
INEFFICIENT OPERATION OF THE APPLIANCE
RESULTING IN THE PRODUCTION OF INCREASED
LEVELS OF CARBON MONOXIDE GAS IN EXCESS OF
SAFE LIMITS WHICH COULD RESULT IN SERIOUS
PERSONAL INJURY OR DEATH.
L1 HOT
120 VAC
POWER
CIRC
PUMP
MOTOR
L2 NEUTRAL
FIGURE 8.
CIRCULATING PUMP WIRING DIAGRAM
DISHWASHER LOOP WITH TOGGLE SWITCH
E CONTROL
ANK
RN LINE
DISHWASHER
TOGGLE
SWITCH
You should contact your gas supplier for any specific changes
which may be required in your area.
FIELD SUPPLIED TEMPERATURE
CONTROL INSTALLED IN THE
CIRCULATING LOOP RETURN LINE
As elevation above sea level is increased, there is less oxygen
per cubic foot of air. Therefore, the heater input rate should
be reduced at high altitudes for satisfactory operation with
the reduced oxygen supply. Failure to make this reduction
would result in an over firing of the heater causing sooting,
poor combustion and/or unsatisfactory heater performance.
NOTE: USE SEPARATE 120 VAC POWER
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH APPLIANCE AS THIS
MAY CAUSE ELECTRICAL LINE NOISE AND
LEAD TO ERRATIC CONTROL SYSTEM
OPERATION.
L1 HOT
120 VAC
POWER
Ratings specified by manufacturers for most appliances
apply for elevations up to 2000 feet (610m). For elevations
above 2000 feet (610), ratings must be reduced at the rate of
4% for each 1000 feet (305m) above sea level. For example,
if a heater is rated at 78,000 Btuh (22.9 Kwh) at sea level, to
rate the heater at 4000 feet (1219m), you subtract 4 (once
for each thousand feet) x.04 (4% input reduction) x 78,000
(original rating) from the original rating.
CIRC
PUMP
MOTOR
L2 NEUTRAL
FIGURE 9.
High Altitude Installations
Therefore, to calculate the input rating at 4,000 feet
(1219m): 4 x .04 x 78,000 = 12,480 Btuh (3.7 Kwh), 78,000
(22.9 Kwh) - 12,480 (3.7 Kwh) = 65,520 Btuh (19.2 Kwh). At
6000 feet (1829m) the correct input rating should be 59,280
Btuh (17.4 Kwh).
Fire and Explosion Hazard
Under no circumstances should the
input exceed the rate shown on the
water heater’s rating label.
Overfiring could result in fire or
explosion.
Gas and carbon monoxide detectors are
available.
Note: The actual firing rate of the water heater must not
exceed the input rating on the water heater's rating label
under any circumstances.
Note: Due to the input rating reduction at high altitudes, the
output rating of the appliance is also reduced and should
be compensated for in the sizing of the equipment for
applications.
11
Installation Requirements
Gas Supply Systems
5. When installing multiple water heaters in the same gas supply
system it is recommended that individual positive lock-up gas
pressure regulators be installed at each unit.
Low pressure building gas supply systems are defined as those
systems that cannot under any circumstances exceed 14” W.C.
(3.48 kPa) (1/2 PSI Gauge). These systems do not require pressure
regulation. Measurements should be taken to insure that gas
pressures are stable and fall within requirements stated on the water
heater rating plate. Readings should be taken with all gas burning
equipment off (static pressure) and with all gas burning equipment
running at maximum rate (dynamic pressure). Gas supply pressure
must be stable within 1.5” W.C. (0.37 kPa) from static to dynamic
pressure to provide good performance. Pressure drops that exceed
1.5” W.C. (0.37 kPa) may cause rough starting, noisy combustion
or nuisance outages. Increases or spikes in static pressure during
off cycles may cause failure to ignite or in severe cases damage to
appliance gas valves. If your low pressure system does NOT meet
these requirements, the installer is responsible for corrections.
Power Supply
The water heaters covered in this manual require a 120 VAC,
1Ø (single phase), 60Hz, 15 amp power supply and must also
be electrically grounded in accordance with local codes or, in the
absence of local codes, with the National Electrical Code, ANSI/
NFPA 70 or the Canadian Electrical Code, CSA C22.1.
Water Temperature Control and Mixing Valves
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
High Pressure building supply systems use pressures that exceed
14” W.C. (3.48 kPa) (1/2 PSI Gauge). These systems must use field
supplied regulators to lower the gas pressure to less than 14” W.C.
(3.48 kPa) (1/2 PSI Gauge). Appliances require gas regulators that
are properly sized for the water heater input and deliver the rating
plate specified pressures. Gas supply systems where pressure
exceeds 5 PSI (34.5 kPa) often require multiple regulators to achieve
desired pressures. Systems in excess of 5 PSI (34.5 kPa) building
pressure should be designed by gas delivery professionals for best
performance. Water heaters connected to gas supply systems that
exceed 14” W.C. (3.48 kPa) (1/2 PSI Gauge) at any time must be
equipped with a gas supply regulator.
Children, the elderly and the
physically or mentally disabled are at
highest risk for scald injury.
Feel water before bathing or
showering.
Temperature limiting devices such as
mixing valves must be installed
when required by codes and to
ensure safe temperatures at fixtures.
Water heated to a temperature which will satisfy clothes
washing, dish washing, and other sanitizing needs can scald
and cause permanent injury upon contact. Short repeated
heating cycles caused by small hot water uses can cause
temperatures at the point of use to exceed the water heater’s
temperature setting by up to 20°F (11°C).
Gas Pressure Requirements
Natural gas models require a minimum gas supply pressure of
5.2” W.C. (1.30 kPa). Propane gas models require a minimum
gas supply pressure of 9.0" W.C. (2.24 kPa). The minimum
supply pressure is measured while gas is flowing (dynamic
pressure). The supply pressure (dynamic) should never fall below
the specified minimum supply pressure. The supply pressure
should be measured with all gas fired appliances connected to
the common main firing at full capacity. If the supply pressure
drops more than 1.5” W.C. (0.37 kPa) as gas begins to flow to
the water heater then the supply gas system including the gas
line and/or the gas regulator may be restricted or undersized.
See Supply Gas Regulator section and Gas Piping section of this
manual. The gas valve on all models has a maximum gas supply
pressure limit of 14" W.C. (3.48 kPa) The maximum supply
pressure is measured while gas is not flowing (static pressure).
Some people are more likely to be permanently injured by
hot water than others. These include the elderly, children, the
infirm and the physically/mentally disabled. Table 5 shows the
approximate time-to-burn relationship for normal adult skin. If
anyone using hot water provided by the water heater being
installed fits into one of these groups or if there is a local code
or state law requiring a certain water temperature at the point
of use, then special precautions must be taken.
In addition to using the lowest possible temperature setting
that satisfies the demand of the application a Mixing Valve
should be installed at the water heater (see Figure 10) or at
the hot water taps to further reduce system water temperature.
Supply Gas Regulator
The maximum allowable gas supply pressure for this water
heater is 14.0 inches W.C. (3.48 kPa). Install a positive lock-up
gas pressure regulator in the gas supply line if inlet gas pressure
can exceed 14.0 inches W.C. (3.48 kPa) at any time. Regulators
must be sized/used according to manufacturer's specifications.
Mixing valves are available at plumbing supply stores.
Consult a Qualified Installer or Service Agency. Follow mixing
valve manufacturer’s instructions for installation of the valves.
Table 5.
If a positive lock-up regulator is required follow these instructions:
Time for Permanent Burns
2nd & 3rd Degree
(Most Severe Burns)
Water Temperature
°F (°C)
Time for 1st Degree Burn
(Less Severe Burns)
110 (43)
(normal shower temp.)
2. Supply gas regulators shall have inlet and outlet connections
not less than the minimum supply gas line size for the water
heater they supply. See Table 7 on page 22
116 (47)
(pain threshold)
116 (47)
35 minutes
45 minutes
3. Positive lock-up gas pressure regulator(s) should be installed no
closer than 3 feet (1 meter) and no farther than 8 feet (2.4 meters)
of equivalent length from the water heater’s inlet gas connection.
122 (50)
1 minute
5 minutes
131 (55)
5 seconds
25 seconds
140 (60)
2 seconds
5 seconds
149 (65)
1 second
2 seconds
154 (68)
instantaneous
1 second
1. Positive lock-up gas pressure regulators must be rated at or
above the input Btu/hr rating of the water heater they supply.
4. After installing the positive lock-up gas pressure regulator(s)
an initial nominal supply pressure setting of 7.0” W.C. while the
water heater is operating is recommended and will generally
provide good water heater operation. Some addition adjustment
maybe required later to maintain a steady gas supply pressure.
(U.S. Government Memorandum, C.P.S.C., Peter L. Armstrong, Sept. 15, 1978)
12
A properly sized thermal expansion tank must be installed on
all closed systems to control the harmful effects of thermal
expansion. Contact a local plumbing service agency to have a
thermal expansion tank installed.
HOT WATER
OUTLET
See Water Line Connections on page 19 and the Water Piping
Diagrams beginning on page 34.
12” TO 15”
(30-38 cm)
TEMPERED WATER
OUTLET
Temperature-Pressure Relief Valve
CHECK
VALVE
COLD
WATER
INLET
CHECK
VALVE
Explosion Hazard
MIXING
VALVE
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22CSA 4.4 and ASME code.
TO TANK
INLET
Properly sized temperaturepressure relief valve must be
installed in opening provided.
Figure 10.
Dishwashing Machines
Can result in overheating and
excessive tank pressure.
All dishwashing machines meeting the National Sanitation
Foundation requirements are designed to operate with water flow
pressures between 15 and 25 pounds per square inch (103 kPa
and 173 kPa). Flow pressures above 25 pounds per square inch
(173 kPa), or below 15 pounds per square inch (103 kPa), will
result in improperly sanitized dishes. Where pressures are high,
a water pressure reducing or flow regulating control valve should
be used in the 180°F (82°C) line to the dishwashing machine and
should be adjusted to deliver water pressure between these limits.
Can cause serious injury or death.
This water heater is provided with a properly rated/sized and
certified combination Temperature-Pressure Relief Valve (T&P
valve) by the manufacturer. The valve is certified by a nationally
recognized testing laboratory that maintains periodic inspection
of production of listed equipment of materials as meeting the
requirements for Relief Valves for Hot Water Supply Systems,
ANSI Z21.22 • CSA 4.4, and the code requirements of ASME.
The National Sanitation Foundation also recommends circulation
of 180°F (82°C) water. The circulation flow rate should be just
enough to provide 180°F (82°C) water at the point of take-off to
the dishwashing machine.
If replaced, the new T&P valve must meet the requirements
of local codes, but not less than a combination TemperaturePressure Relief Valve rated/sized and certified as indicated in
the above paragraph. The new valve must be marked with a
maximum set pressure not to exceed the marked hydrostatic
working pressure of the water heater (150 psi = 1,035 kPa) and
a discharge capacity not less than the water heater Btu/hr or kW
input rate as shown on the water heater’s model rating label.
Adjust flow by throttling a full port ball valve installed in the
circulating line on the outlet side of the pump. Never throttle flow
on the suction side of a pump. See Water Piping Diagrams in
this manual.
Note: These appliances meet the NSF Standard 5 for sanitary
installations when used with the leg kit, Part Number 9003425205.
NOTE: In addition to the factory installed Temperature-Pressure
Relief Valve on the water heater, each remote storage tank that
may be installed and piped to a water heating appliance must also
have its own properly sized, rated and approved TemperaturePressure Relief Valve installed. Call the toll free technical
support phone number listed on the back cover of this manual
for technical assistance in sizing a Temperature-Pressure Relief
Valve for remote storage tanks.
Closed Water Systems
Water supply systems may, because of code requirements
or such conditions as high line pressure, among others, have
installed devices such as pressure reducing valves, check
valves, and back flow preventers. Devices such as these cause
the water system to be a closed system.
Thermal Expansion
For safe operation of the water heater, the Temperature-Pressure
Relief Valve must not be removed from its designated opening
nor plugged. The Temperature-Pressure Relief Valve must be
installed directly into the fitting of the water heater designed for the
relief valve. Install discharge piping so that any discharge will exit
the pipe within 6 inches (15.2 cm) above an adequate floor drain,
or external to the building. In cold climates it is recommended
that it be terminated at an adequate drain inside the building. Be
certain that no contact is made with any live electrical part. The
discharge opening must not be blocked or reduced in size under
any circumstances. Excessive length, over 30 feet (9.14 m), or
use of more than four elbows can cause restriction and reduce
the discharge capacity of the valve.
As water is heated, it expands (thermal expansion). In a closed
system the volume of water will grow when it is heated. As the
volume of water grows there will be a corresponding increase
in water pressure due to thermal expansion. Thermal expansion
can cause premature tank failure (leakage). This type of failure
is not covered under the limited warranty. Thermal expansion
can also cause intermittent Temperature-Pressure Relief Valve
operation: water discharged from the valve due to excessive
pressure build up. This condition is not covered under the limited
warranty. The Temperature-Pressure Relief Valve is not intended
for the constant relief of thermal expansion.
13
No valve or other obstruction is to be placed between the
Temperature-Pressure Relief Valve and the tank. Do not connect
discharge piping directly to the drain unless a 6” (15.2 cm)
air gap is provided. To prevent bodily injury, hazard to life, or
property damage, the relief valve must be allowed to discharge
water in adequate quantities should circumstances demand. If
the discharge pipe is not connected to a drain or other suitable
means, the water flow may cause property damage.
If you do not understand these instructions or have any questions
regarding the Temperature-Pressure Relief Valve call the toll free
number listed on the back cover of this manual for technical
assistance.
Contaminated Air
CAUTION
Breathing Hazard - Carbon Monoxide Gas
Install water heater in accordance with
the Instruction Manual and NFPA 54 or
CAN/CSA-B149.1.
To avoid injury, combustion and ventilation
air must be taken from outdoors.
Do not place chemical vapor emitting
products near water heater.
Water Damage Hazard
• Temperature-Pressure Relief Valve discharge
pipe must terminate at adequate drain.
T&P Valve Discharge Pipe Requirements:
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
• Shall not be smaller in size than the outlet pipe size of the
valve, or have any reducing couplings or other restrictions.
Corrosion of the flue ways and vent system may occur if air for
combustion contains certain chemical vapors. Such corrosion
may result in failure and risk of asphyxiation.
• Shall not be plugged or blocked.
• Shall not be exposed to freezing temperatures.
• Shall be of material listed for hot water distribution.
Combustion air that is contaminated can greatly diminish the life
span of the water heater and water heater components such as
hot surface igniters and burners. Propellants of aerosol sprays,
beauty shop supplies, water softener chemicals and chemicals
used in dry cleaning processes that are present in the combustion,
ventilation or ambient air can cause such damage.
• Shall be installed so as to allow complete drainage of both
the Temperature-Pressure Relief Valve and the discharge
pipe.
• Must terminate a maximum of six inches above a floor
drain or external to the building. In cold climates, it is
recommended that the discharge pipe be terminated at an
adequate drain inside the building.
Do not store products of this sort near the water heater. Air which
is brought in contact with the water heater should not contain any
of these chemicals. If necessary, uncontaminated air should be
obtained from remote or outdoor sources. The limited warranty is
voided when failure of water heater is due to a corrosive atmosphere.
(See limited warranty for complete terms and conditions).
• Shall not have any valve or other obstruction between the
relief valve and the drain.
Air Requirements
Burn hazard.
Hot water discharge.
Breathing Hazard - Carbon Monoxide Gas
Keep clear of TemperaturePressure Relief Valve
discharge outlet.
Install water heater in accordance with
the Instruction Manual and NFPA 54 or
CAN/CSA-B149.1.
To avoid injury, combustion and ventilation
air must be taken from outdoors.
Do not place chemical vapor emitting
products near water heater.
The Temperature-Pressure Relief Valve must be manually
operated at least twice a year. Caution should be taken to ensure
that (1) no one is in front of or around the outlet of the TemperaturePressure Relief Valve discharge line, and (2) the water manually
discharged will not cause any bodily injury or property damage
because the water may be extremely hot. If after manually
operating the valve, it fails to completely reset and continues to
release water, immediately close the cold water inlet to the water
heater, follow the draining instructions in this manual, and replace
the Temperature-Pressure Relief Valve with a properly rated/sized
new one.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
For safe operation an adequate supply of fresh uncontaminated
air for combustion and ventilation must be provided.
An insufficient supply of air can cause recirculation of combustion
products resulting in contamination that may be hazardous to
life. Such a condition often will result in a yellow, luminous burner
flame, causing sooting of the combustion chamber, burners and
flue tubes and creates a risk of asphyxiation.
NOTE: The purpose of a Temperature-Pressure Relief Valve is
to prevent excessive temperatures and pressures in the storage
tank. The T&P valve is not intended for the constant relief of
thermal expansion. A properly sized thermal expansion tank must
be installed on all closed systems to control thermal expansion,
see Closed Water Systems and Thermal Expansion on page 13.
Do not install the water heater in a confined space unless an
adequate supply of air for combustion and ventilation is brought
in to that space using the methods described in the Confined
Space section that follows.
14
Never obstruct the flow of ventilation air. If you have any doubts
or questions at all, call your gas supplier. Failure to provide the
proper amount of combustion air can result in a fire or explosion
and cause property damage, serious bodily injury or death.
for the openings is dependent on the method used to provide
fresh air to the confined space AND the total Btu/hr input
rating of all appliances installed in the space.
Exhaust Fans
Unconfined Space
Where exhaust fans are installed, additional air shall be
provided to replace the exhausted air. When an exhaust
fan is installed in the same space with a water heater,
sufficient openings to provide fresh air must be provided
that accommodate the requirements for all appliances in the
room and the exhaust fan. Undersized openings will cause
air to be drawn into the room through the water heater’s vent
system causing poor combustion. Sooting, serious damage
to the water heater and the risk of fire or explosion may
result. It can also create a risk of asphyxiation.
An Unconfined Space is one whose volume IS NOT LESS THAN
50 cubic feet per 1,000 Btu/hr (4.8 cubic meters per kW) of the
total input rating of all appliances installed in the space. Rooms
communicating directly with the space, in which the appliances
are installed, through openings not furnished with doors, are
considered a part of the unconfined space.
Makeup air requirements for the operation of exhaust fans,
kitchen ventilation systems, clothes dryers and fireplaces shall
also be considered in determining the adequacy of a space to
provide combustion, ventilation and dilution air.
Louvers and Grilles
Unusually Tight Construction
In unconfined spaces in buildings, infiltration may be adequate
to provide air for combustion, ventilation and dilution of flue
gases. However, in buildings of unusually tight construction (for
example, weather stripping, heavily insulated, caulked, vapor
barrier, etc.) additional air must be provided using the methods
described in the Confined Space section that follows.
The free areas of the fresh air openings in the instructions
that follow do not take in to account the presence of louvers,
grilles or screens in the openings.
The required size of openings for combustion, ventilation
and dilution air shall be based on the “net free area” of each
opening. Where the free area through a design of louver or
grille or screen is known, it shall be used in calculating the
size of opening required to provide the free area specified.
Where the louver and grille design and free area are not
known, it shall be assumed that wood louvers will have 25%
free area and metal louvers and grilles will have 75% free
area. Non motorized louvers and grilles shall be fixed in the
open position.
Confined Space
A Confined Space is one whose volume IS LESS THAN 50 cubic
feet per 1,000 Btu/hr (4.8 cubic meters per kW) of the total input
rating of all appliances installed in the space.
Openings must be installed to provide fresh air for combustion,
ventilation and dilution in confined spaces. The required size
venting Installation
• Do not connect the heater to a common vent or chimney
with solid fuel burning equipment. This practice is
prohibited by many local building codes as is the
practice of venting gas fired equipment to the duct work
of ventilation systems.
THE INSTRUCTIONS IN THIS SECTION ON VENTING MUST
BE FOLLOWED TO AVOID CHOKED COMBUSTION OR
RECIRCULATION OF FLUE GASES. SUCH CONDITIONS
CAUSE SOOTING OR RISKS OF FIRE AND ASPHYXIATION.
Heater must be protected from freezing downdrafts.
Remove all soot or other obstructions from the chimney that will
retard a free draft.
Type B venting is recommended with these heaters. For
typical venting application see TECHNICAL DATA VENTING
on page 18.
This water heater must be vented in compliance with all local
codes, the current revision of the National Fuel Gas Code
(ANSI-Z223.1) and with the Category I Venting Tables.
FIGURE 11.
If any part of the vent system is exposed to ambient temperatures
below 40°F it must be insulated to prevent condensation.
• Where a separate vent connection is not available and the
vent pipe from the heater must be connected to a common
15
Outdoor Air Through One Opening
vent with an oil burning furnace, the vent pipe should enter
the smaller common vent or chimney at a point above the
large vent pipe.
Multiple Heater Manifold
Figure 12 and Table 6 should be used for horizontally manifolding
two or more heaters.
Figure 14.
Alternatively a single permanent opening, commencing within 12
inches (300 mm) of the top of the enclosure, shall be provided. See
Figure 14. The water heater shall have clearances of at least 1 inch
(25 mm) from the sides and back and 6 inches (l50 mm) from the
front of the appliance. The opening shall directly communicate with
the outdoors or shall communicate through a vertical or horizontal
duct to the outdoors or spaces that freely communicate with the
outdoors and shall have a minimum free area of the following:
Figure 12.
Fresh Air Openings For Confined Spaces
The following instructions shall be used to calculate the size,
number and placement of openings providing fresh air for
combustion, ventilation and dilution in confined spaces. The
illustrations shown in this section of the manual are a reference
for the openings that provide fresh air into confined spaces
only. DO NOT refer to these illustrations for the purpose of vent
installation. See Venting Installation on page 15 for complete
venting installation instructions.
1. 1 square inch per 3000 Btu/hr (733 mm2 per kW) of the total
input rating of all appliances located in the enclosure, and
2. Not less than the sum of the areas of all vent connectors in
the space.
Outdoor Air Through Two Horizontal Ducts
Outdoor Air Through Two Openings
Figure 15.
The confined space shall be provided with two permanent
horizontal ducts, one commencing within 12 inches (300 mm) of
the top and one commencing within 12 inches (300 mm) of the
bottom of the enclosure. The horizontal ducts shall communicate
directly with the outdoors. See Figure 15.
Figure 13.
The confined space shall be provided with two permanent
openings, one commencing within 12 inches (300 mm) of the top
and one commencing within 12 inches (300 mm) of the bottom of
the enclosure. The openings shall communicate directly with the
outdoors. See Figure 13.
Each duct opening shall have a minimum free area of 1 square
inch per 2,000 Btu/hr (1100 mm2 per kW) of the aggregate input
rating of all appliances installed in the enclosure.
Each opening shall have a minimum free area of 1 square inch
per 4,000 Btu/hr (550 mm2 per kW) of the aggregate input rating
of all appliances installed in the enclosure. Each opening shall
not be less than 100 square inches (645 cm2).
When ducts are used, they shall 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 shall be not less
than 3 inches (7.6 cm).
16
Outdoor Air Through Two Vertical Ducts
When ducts are used, they shall 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 shall be not less
than 3 inches.
The illustrations shown in this section of the manual are a
reference for the openings that provide fresh air into confined
spaces only.
Air From Other Indoor Spaces
Do not refer to these illustrations for the purpose of vent
installation. See Venting Installation on page 15 for complete
venting installation instructions.
Figure 17.
The confined space shall be provided with two permanent
openings, one commencing within 12 inches (300 mm) of the top
and one commencing within 12 inches (300 mm) of the bottom of
the enclosure. See Figure 17.
Figure 16.
The confined space shall be provided with two permanent vertical
ducts, one commencing within 12 inches (300 mm) of the top and
one commencing within 12 inches (300 mm) of the bottom of the
enclosure. The vertical ducts shall communicate directly with the
outdoors. See Figure 16.
Each opening shall communicate directly with an additional
room(s) of sufficient volume so that the combined volume of all
spaces meets the criteria for an Unconfined Space.
Each opening shall have a minimum free area of 1 square inch
per 1,000 Btu/hr (2200 mm2 per kW) of the aggregate input rating
of all appliances installed in the enclosure. Each opening shall
not be less than 100 square inches (645 cm2).
Each duct opening shall have a minimum free area of 1 square
inch per 4,000 Btu/hr (550 mm2 per kW) of the aggregate input
rating of all appliances installed in the enclosure.
17
Technical Data Venting
Table 6. TECHNICAL DATA VENTING
TYPE B GAS VENT
Multiple Gas Fired Tank-Type Heaters
When venting multiple tank type heaters using Type B vent
pipe, follow the installation diagram (Figure 12) and tables
below which give sizing and data based upon NFPA 54/ANSI
Z223. 2006.
MODEL 151
Input: 150,000 btu/hr
Vent Connector Size: 6 inches
Number of Heaters
2
3
4
MODEL 201
Input: 182,000 and 199,900 btu/hr
Vent Connector Size: 6 inches
Number of Heaters
2
3
4
Input (btu/hr)
150,000
150,000
150,000
Rise
1 Ft.
2 Ft.
3 Ft.
6
6
6
6
100
6
6
6
Manifold and Common Vent Diameter (Inches)
Combined Input (btu/hr)
300,000
450,000
600,000
Input (btuh/hr)
182,000
199,000
182,000
199,900
182,000
199,900
Total Vent Height (Feet)
10
15
20
30
50
Vent Connector Diameter (Inches)
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
8
Rise
1 Ft.
2 Ft.
3 Ft.
8
9
10
7
9
10
6
8
7
7
6
7
6
7
7
7
6
7
6
6
7
9
10
7
8
9
7
8
9
6
7
8
6
7
8
Total Vent Height (Feet)
10
15
20
30
50
Vent Connector Diameter (Inches)
7
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
7
7
100
6
6
6
6
6
6
Manifold and Common Vent Diameter (Inches)
Combined Input (btu/hr)
364,000
9
8
8
7
7
7
6
6
399,800
9
9
8
8
7
7
7
6
546,000
10
10
9
9
8
8
7
7
599,700
10
10
10
9
9
8
8
7
728,000
12
12
12
10
9
9
8
8
799,600
12
12
12
10
10
9
9
8
18
Water heater installation
Water Line Connections
remote storage tank that may be installed and piped to a
water heating appliance must also have its own properly
sized, rated and approved Temperature-Pressure Relief
Valve installed. Call the toll free technical support phone
number listed on the back cover of this manual for further
assistance in sizing a T&P valve for remote storage tanks.
The water piping installation must conform to these instructions
and to all local code authority having jurisdiction. Good practice
requires that all heavy piping be supported.
Read and observe all requirements in the following sections
before installation of the water piping begins:
T&P Valve Discharge Pipe
1. Water Temperature Control and Mixing Valves on page 12.
2. Dishwashing Machines on page 13.
3. Closed Systems and Thermal Expansion on page 13.
Explosion Hazard
4. Temperature-Pressure Relief Valve on page 13.
5. For multiple water heater installations see Water Piping
Diagrams beginning on page 34.
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22CSA 4.4 and ASME code.
This manual provides detailed installation diagrams (see pages
34-48 of this manual) for typical methods of application for the
water heater(s).
Properly sized temperaturepressure relief valve must be
installed in opening provided.
Can result in overheating and
excessive tank pressure.
Can cause serious injury or death.
Water (potable) Heating And Space Heating
1. All piping components connected to this unit for space heating
applications shall be suitable for use with potable water.
2. Toxic chemicals, such as those used for boiler treatment, shall
NEVER be introduced into this system.
This water heater is provided with a properly rated/sized and
certified combination temperature - pressure (T&P) relief valve by
the manufacturer. See Temperature-Pressure Relief Valve on pages
13-14 for information on replacement and other requirements.
3. This unit may NEVER be connected to any existing heating
system or component(s) previously used with a non-potable
water heating appliance.
CAUTION
4. When the system requires water for space heating at
temperatures higher than required for domestic water
purposes, a tempering valve must be installed. Please refer
to installation diagrams on pages 34-48 of this manual for
suggested piping arrangements.
Water Damage Hazard
• Temperature-Pressure Relief Valve discharge
pipe must terminate at adequate drain.
5. These water heaters cannot be used in space heating
applications only.
Thermometers are installed in the system as a means of detecting
the temperature of the outlet water supply.
Install a discharge pipe between the T&P valve discharge opening and
a suitable floor drain. Do not connect discharge piping directly to the
drain unless a 6” (15.2 cm) air gap is provided. To prevent bodily injury,
hazard to life, or property damage, the relief valve must be allowed
to discharge water in adequate quantities should circumstances
demand. If the discharge pipe is not connected to a drain or other
suitable means, the water flow may cause property damage.
Water Piping Diagrams
T&P Valve Discharge Pipe Requirements:
Thermometers (not Supplied)
Thermometers should be obtained and field installed as shown in
the installation diagrams.
• Shall not be smaller in size than the outlet pipe size of the
valve, or have any reducing couplings or other restrictions.
• Shall not be plugged or blocked.
• Shall not be exposed to freezing temperatures.
• Shall be of material listed for hot water distribution.
• Shall be installed so as to allow complete drainage of both the
Temperature-Pressure Relief Valve and the discharge pipe.
• Must terminate a maximum of six inches above a floor drain
or external to the building. In cold climates, it is recommended
that the discharge pipe be terminated at an adequate drain
inside the building.
• Shall not have any valve or other obstruction between the
relief valve and the drain.
This manual provides detailed water piping diagrams for
typical methods of application for the water heaters, see
Water Piping Diagrams beginning on page 34. The water
heater may be installed by itself, or with a separate storage
tank, on both single and two-temperature systems. When
used with a separate storage tank, the circulation may
be either by gravity or by means of a circulating pump.
Adjust flow by throttling a full port ball valve installed in the
circulating line on the outlet side of the pump. Never throttle
flow on the suction side of a pump. See the Water Piping
Diagrams beginning on page 34.
Note: In addition to the factory installed TemperaturePressure Relief Valve (T&P valve) on the water heater, each
19
Installation Diagrams - Top Inlet/Outlet Usage
TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE
TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE
CONTROL AND MIXING VALVE WARNING ON PAGE 12. IF
HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO
OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN ANTISCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES.
Use of the top inlet water connection requires an inlet dip tube
(refer to Figure 18). The tube is supplied in the heater. Follow
caution labels if applying heat to this fitting. Do not allow pipe
dope to contact the plastic tube during installation.
Tube Inlet Installation
Figure 18
20
Heater Wiring
All electrical work must be installed in accordance with the latest version of the National Electrical Code ANSI/NFPA No. 70 and
must conform to all local code authority having jurisdiction. AN ELECTRICAL GROUND IS REQUIRED TO REDUCE RISK OF
ELECTRICAL SHOCK OR POSSIBLE ELECTROCUTION.
If any of the original wire as supplied with the appliance must be replaced, use only type 105°C thermoplastic or equivalent and 2500C
type F must be used for the flame sensor and igniter leads.
The controls of this water heater are polarity sensitive. Be certain to properly wire the hot and neutral connections.
Figure 19.
21
Gas Piping
two threads. Use compounds resistant to the action of liquefied
petroleum gases.
Contact your local gas service company to ensure that adequate
gas service is available and to review applicable installation
codes for your area.
Gas Meter Size – Natural Gases Only
Be sure the gas meter has sufficient capacity to supply the full
rated gas input of the water heater as well as the requirements of
all other gas fired equipment supplied by the meter. If gas meter
is too small, ask the gas company to install a larger meter having
adequate capacity.
Size the main gas line in accordance with Table 7. The figures
shown are for straight lengths of pipe at 0.5 in. W.C. pressure
drop, which is considered normal for low pressure systems.
Note: Fittings such as elbows, tees and line regulators will add
to the pipe pressure drop. Also refer to the latest version of the
National Fuel Gas Code.
GAS PIPING AND Sediment Trap INSTALLATION
Schedule 40 Steel or Wrought Iron Pipe is the preferred material
for the gas line of this water heater. It is imperative to follow the
sizing recommendations in the latest version of the National Fuel
Gas Code if Corrugated Stainless Steel Tubing (CSST) is used
as the gas line for this water heater.
The heater is not intended for operation at higher than 14.0" W.C.
(3.49 kPa) (1/2 pound per square inch gage) supply gas pressure.
Exposure to higher supply pressure may cause damage to the
gas valve which could result in fire or explosion. If overpressure
has occurred such as through improper testing of gas lines or
emergency malfunction of the supply system, the gas valve must
be checked for safe operation. Make sure that the outside vents
on the supply regulators and the safety vent valves are protected
against blockage. These are parts of the gas supply system, not
the heater. Vent blockage may occur during ice storms.
Figure 20.
Table 7. GAS SUPPLY PIPE LENGTHS (IN FEET)
Maximum Equivalent Pipe Length - Natural Gas Only
Schedule 40 Steel or Wrought Iron Pipe
Input Rate
1/2"
3/4"
1"
1 1/4"
1 1/2"
(BTU/HR)
Gas Line Leak Testing
120,000
20
70
200
200
200
154,000
10
40
150
200
200
180,000
30
100
200
200
199,000
30
90
200
200
250,000
20
60
200
200
275,000
10
50
200
200
310,000
10
40
150
200
366,000
30
100
200
390,000
20
100
200
Fitting Type*
Equivalent Length in Feet
45° EII
0.7
1.0
1.2
1.6
1.9
90° EII
1.6
2.1
2.6
3.5
4.0
Tee
3.1
4.1
5.2
6.9
8.0
Natural Gas 0.60 Specific Gravity, 0.50" W.C. Pressure Drop
Fire and Explosion Hazard
Use joint compound or Teflon tape
compatible with propane gas.
Leak test before placing the wateheater
in operation.
Disconnect gas piping and main gas
shutoff valve before leak testing.
Install sediment trap in accordance
with NFPA 54.
Any time work is done on the gas supply system perform a leak
test to avoid the possibility of fire or explosion.
1. For test pressures exceeding 1/2 psi (3.45 kPa) disconnect
the water heater and its Main Gas Shutoff Valve from the
gas supply piping system during testing, see Figure 20. The
gas supply line must be capped when disconnected from the
water heater.
2. For test pressures of 1/2 psi (3.45 kpa) or less, the appliance
need not be disconnected, but must be isolated from the supply
gas line by closing the Main Gas Shutoff Valve during testing.
3. Coat all supply gas line joints and connections upstream of the
water heater with a non-corrosive soap and water solution to
test for leaks. Bubbles indicate a gas leak. Do not use matches,
candles, flame or other sources of ignition for this purpose.
4. Repair any leaks before placing the water heater in operation.
*Screwed Fittings
It is important to guard against gas valve fouling from contaminants
in the gas ways. Such fouling may cause improper operation, fire
or explosion.
If copper supply lines are used they must be internally tinned and
certified for gas service. Before attaching the gas line, be sure that
all gas pipe is clean on the inside.
To trap any dirt or foreign material in the gas supply line, a sediment
trap must be incorporated in the piping, see Figure 20. The
sediment trap must be readily accessible and not subject to freezing
conditions. Install in accordance with recommendations of serving
gas suppliers. Refer to the current editions of the National Fuel
Gas Code or B149.1 Natural Gas and Propane installation code.
Purging
To prevent damage, care must be taken not to apply too much
torque when attaching gas supply pipe to gas valve inlet.
Gas line purging is required with new piping or systems in which
air has entered.
Apply joint compounds (pipe dope) sparingly and only to the
male threads of pipe joints. Do not apply compounds to the first
Purging should be performed per the current edition of NFPA
54, the National Fuel Gas Code.
22
Start Up
Prior to Start Up
Initial Start Up
Installation and start up of this water heater requires abilities
and skills equivalent to that of a licensed tradesman in the field
involved, see Qualifications on page 6.
Required Test Equipment
U-tube manometer, pressure gauge, or digital manometer.
Recommended range: 20” W.C. (5 kPa).
Note: All test equipment must be acclimated to ambient
temperature before calibration and use.
Preparation
1.Adjust the thermostat to the lowest temperature setting.
2.Turn the water heater’s on/off switch to the “off” position.
3.Close the Main Gas Shut Off Valve, see Figure 20.
4.Wait five (5) minutes for any residual gas to clear.
5.Connect the manometer to the supply gas pressure test port.
6.Open the Main Gas Shutoff Valve.
7.Measure and record the supply gas pressure, this is a “static”
supply gas pressure reading; while the water heater is not firing.
Do not place the water heater in operation if any part has been
under water. Immediately call a qualified service technician to
inspect the water heater and to replace any part of the control
system and any gas control which has been under water.
Light the water heater in accordance with the Lighting and
Operation Instruction label on the water heater and in this manual
on page 25.
The water heaters covered by this manual are equipped with
an electronic control system that automatically sequences the
Blower, the Igniter, the 24 VAC Gas Valve, Burner ignition,
and flame sensing. The control system will lock out after three
unsuccessful ignition attempts.
Before attempting start up, thoroughly study and familiarize
yourself with the exact Sequence Of Operation, see the written
Sequence Of Operation on page 25 and the Sequence Of
Operation Flow Chart on page 26.
Lighting The Water Heater
1.Turn the water heater’s on/off switch to the “on” position.
2.Adjust the thermostat to the desired water temperature.
3.Record the supply gas pressure when the 24 VAC Gas Valve is
energized and the Burner is operating. This is a “dynamic” gas
pressure reading; while the water heater is firing.
4.Compare the actual supply gas pressure reading recorded
above to the required minimum/maximum values given in
Table 3 on page 8. Adjust supply gas pressure as necessary,
see the instructions that follow.
5.After the supply gas pressure adjustments are complete, turn
off the water heater and close the Main Gas Supply Shut Off
Valve. Disconnect the manometer and install the pipe plug in
the Supply Gas Pressure Port.
Be certain that the water heater is full of water, that air is purged
from the gas and water lines and that there are no leaks in the
gas and water lines. Ensure all inlet water valves are open.
Filling The Water Heater
Follow these steps to fill the water heater prior to start up.
1.Close the heater drain valve.
2.Open a nearby hot water faucet to permit the air in the system
to escape.
3.Fully open the cold water inlet valve allowing the piping and
water heater to fill with water.
4.Close the hot water faucet opened in Step 2 as water starts
to flow.
Supply Gas Pressure Adjustment
Supply Gas Line Purging
Fire and Explosion Hazard
Do not use water heater with any gas
other than the gas shown on the rating
label.
Excessive gas pressure to gas valve can
cause serious injury or death.
Turn off gas lines during installation.
Contact a qualified installer or service
agency for installation and service.
Fire or Explosion Hazard
Gas line purging is required with new piping or systems in
which air has entered.
To avoid risk of fire or explosion purge discharge must not
enter into confined areas or spaces where ignition can occur.
The area must be well ventilated and all sources of ignition
must be deactivated or removed.
Use only the gas shown on the water heater rating label.
Keep ignition sources away from faucets after extended
periods of non-use.
Supply gas pressure shall be measured while the water heater
is not firing (static pressure) and while the water heater is firing
at full capacity (dynamic pressure).
If the supply gas pressure to the water heater is not between
the required minimum and maximum values given in Table 3
on page 8 adjust the supply gas regulator as necessary. Adjust
the supply gas regulator(s) per the regulator manufacturer’s
instructions to achieve the required “static” and “dynamic”
supply gas pressure.
Read instruction manual before
installing, using or servicing
water heater.
1.Close the Main Gas Shutoff Valve, see Figure 20.
2.Purge all air from the supply gas line up to the water heater’s
Main Gas Shutoff Valve.
3.When all air has been purged from the supply gas line, tighten
all supply gas line connections.
4.Check for gas leaks, see Gas Line Leak Testing on page 22
and repair any leaks found.
Multiple Appliance Installations:
In multiple water heater installations or in installations where
the installed water heater(s) share a common gas supply main
with other gas fired appliances; the supply gas pressures shall
be measured at each water heater with all gas fired appliances
connected to a common main firing at full capacity.
23
On multiple water heater installations the supply gas line regulators
shall be adjusted to provide gas pressure to each water heater
within the minimum and maximum supply pressure requirements
listed in Table 3 on page 8 with all gas fired appliances connected
to a common gas main firing at full capacity.
Checking the Input
For appliance installation locations with elevations above 2000
feet, refer to HIGH ALTITUDE INSTALLATIONS section of this
manual for input reduction procedure.
Note: A pressure drop of more than 1.5” W. C. (0.37 kPa)
when the Main Burner ignites is an indication of an inadequate
supply of gas and can lead to ignition failure, rough starts and/
or rough operation. If a drop of more than 1.5” W. C. (0.37 kPa)
in supply gas pressure occurs when the Main Burner ignites,
ensure the supply gas lines and regulator(s) are properly sized
and installed. See the requirements for Supply Gas Regulator
on page 12 and Gas Piping on page 22. Ensure all requirements
and installation instructions are maintained.
1. Attach a pressure gauge or a manometer to the manifold
pressure tap on the gas valve and refer to Table 3, for correct
manifold pressure.
Checking Venting
2. Use this formula to “clock” the meter. Be sure that other gas
consuming appliances are not operating during this interval.
The following steps shall be followed with each appliance connected
to the venting system placed in operation, while any other
appliances connected to the venting system are not in operation.
1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and horizontal pitch, as
required in the National Fuel Gas Code, ANSI Z223.1or the CAN/
CGA B149 Installation Codes and these instructions. Determine
that there is no blockage or restriction, leakage, corrosion and
other deficiencies which could cause an unsafe condition.
(3600/T) x H = Btuh
T = Time in seconds to burn one cubic foot of gas.
H = Btu’s per cubic foot of gas.
Btuh = Actual heater input.
Example:
T = 18.99 seconds
H = 1050 Btu
Btuh = ?
(3600/18.99) x 1050 = 199,052
Should it be necessary to adjust the gas pressure to the burners
to obtain the full input rate, the steps below should be followed:
3. Remove the regulator adjustment sealing cap and adjust the pressure
by turning the adjusting screw with a screwdriver. See Figure 21.
3. So far as is practical, close all building doors and windows
and all doors between the space in which the water heater(s)
connected to the venting system are located and other spaces of
the building. Turn on all appliances not connected to the venting
system. Turn on all exhaust fans, such as range hoods and
bathroom exhausts, so they shall operate at maximum speed.
Close fireplace dampers.
Clockwise to increase gas pressure and input rate.
Counterclockwise to decrease gas pressure and input rate.
4. “Clock” the meter as in step 2 above.
5. Repeat steps 3 and 4 until the specified input rate is achieved.
4. Follow the lighting instruction. Place the water heater being
inspected in operation. Adjust thermostat so appliance shall
operate continuously.
6. Turn the gas control knob to PILOT. Remove the pressure
gauge and replace the sealing cap and the Allen wrench set
screw in the pressure tap opening.
5. Test for spillage at the burner level after 5 minutes of main
burner operation.
UNDER NO CIRCUMSTANCES SHOULD THE GAS INPUT EXCEED
THE INPUT SHOWN ON THE HEATER MODEL AND RATING PLATE.
OVERFIRING COULD RESULT IN DAMAGE OR SOOTING OF THE HEATER.
6. After it has been determined that each appliance connected
to the venting system properly vents when tested as outlined
above, return doors, windows, exhaust fans, fireplace dampers
and any other gas burning appliance to their previous conditions
of use.
Water Temperature Adjustment
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
7. If improper venting is observed during any of the above tests,
the venting system must be corrected.
FAILURE TO CORRECT BACK DRAFTS MAY CAUSE AIR
CONTAMINATION AND UNSAFE CONDITIONS.
Children, the elderly and the
physically or mentally disabled are at
highest risk for scald injury.
• If the back draft cannot be corrected by the normal method or
if a suitable draft cannot be obtained, a blower type flue gas
exhauster must be employed to assure proper venting and
correct combustion.
Feel water before bathing or
showering.
Temperature limiting devices such as
mixing valves must be installed
when required by codes and to
ensure safe temperatures at fixtures.
Gas Valves
Figure 21 shows the type of combination manual gas control valve
and regulator used on these heaters.
If the gas valve becomes defective, repairs should not be attempted.
A new valve should be installed in place of the defective one.
The water temperature is controlled by a thermostat, Figure 2,
which has two sensing elements. One sensor is located near the
top of the tank and the other is near the center. The thermostat
is set in the lowest position before the heater leaves the factory.
The thermostat temperature dial, Figure 2, is accessible by
removing the control cover. The dial is adjustable and may be set
for 120°F (49°C) to 180°F (82°C) water temperature, but 120°F
(49°C) is the recommended starting point. It is suggested the dial
be placed on the lowest setting which produces an acceptable
hot water supply. This will always give the most energy efficient
operation. The temperature control has a 4°F fixed differential.
Figure 21.
24
SEQUENCE OF OPERATION
10.From the time the Gas Valve opens, the Ignition Control Board waits
3 seconds and then shuts off power to the Silicon Nitride Igniter.
11.From the time the Silicon Nitride Igniter’s power is shut off,
the Ignition Control Board waits 3 more seconds to monitor
the Flame Sensor.
12.If the Flame Sensor does not detect a strong enough flame,
the Ignition Control Board shuts off the Gas Valve and allows
the Exhaust Inducer to purge the unit for 20 seconds. At that
time, the Ignition Control Board restarts with step 7. It will try
and ignite the main burners 2 more times. If the unit does not
light, the Ignition Control Board will wait one hour and then
restart at step 3. This cycle will continue until the unit lights or
the power is shutoff to the unit.
13.If the Flame Sensor detects a strong flame, the Ignition Control
Board will allow the unit to operate until the thermostat is satisfied.
14.Once the unit is satisfied, the Ignition Control Board will shut
off the Gas Valve and the unit will be in standby mode until
another call for heat is initiated by the thermostat.
The following information will describe the Sequence of Operation
for this appliance.
1. Switch power on to unit.
2. Thermostat calls for heat.
3. Ignition Control Board performs diagnostic check on system
components.
4. On completion of diagnostics check, the Ignition Control Board
sends signal to Exhaust Inducer.
5. Exhaust Inducer begins drawing air through appliance closing
the Prover Switch.
6. On completion of Prover Switch engagement, the Ignition
Control Board begins the ignition cycle.
7. The Ignition Control Board provides power to the Silicon
Nitride Igniter.
8. The Silicon Nitride Igniter heats up for approximately 17 to
20 seconds.
9. At the end of Silicon Nitride Igniter’s warm-up, the Ignition
Control Board opens the Gas Valve.
See the flow chart on page 26 for more information.
Lighting & Operation Label
Figure 22.
25
Sequence of Operation Flow Chart
Description of this flow chart can be found in the “SEQUENCE OF OPERATION” section found on page 25.
Figure 23.
26
Maintenance
Check the Igniter Assembly and Main Burners
If the storage tank temperature control is out of calibration, replace
with new control.
At least once a year, check the igniter assembly, Figure 24, and
the main burner, Figure 25, for proper operation. Refer to the
following igniter assembly and main burner sections.
SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL
TO SHUT OFF, TURN OFF THE MANUAL GAS CONTROL VALVE
TO THE APPLIANCE.
Igniter Assembly
Temperature-Pressure Relief Valve Test
For access to igniter assembly, unfasten two screws to burner
cover and remove. Locate the burner with the igniter assembly
and remove screw holding burner to manifold. Slide burner out
to access igniter assembly.
Burn hazard.
Servicing of the igniter assembly includes keeping the igniter free
of lint, scale or any other foreign debris.
Hot water discharge.
Keep clear of TemperaturePressure Relief Valve
discharge outlet.
It is recommended that the Temperature-Pressure Relief Valve should
be checked to ensure that it is in operating condition every 6 months.
Figure 24. IGNITER
Main Burner
When checking the Temperature-Pressure Relief Valve operation,
make sure that (1) no one is in front of or around the outlet of the
Temperature-Pressure Relief Valve discharge line, and (2) that the
water discharge will not cause any property damage, as the water
may be extremely hot. Use care when operating valve as the valve
may be hot.
The main burner, Figure 25, should display the following
characteristics:
• Cause rapid ignition and carry across entire burner.
• Give reasonably quiet operation during ignition, burning, and
extinction.
• Cause no excessive lifting of flame from burner ports.
To check the relief valve, lift the lever at the end of the valve several
times, see Figure 26. The valve should seat properly and operate
freely.
If after manually operating the valve, it fails to completely reset and
continues to release water, immediately close the cold water inlet
to the water heater and drain the water heater, see Draining And
Flushing on page 28. Replace the Temperature-Pressure Relief
Figure 25.
If the preceding burner characteristics are not evident, check for
accumulation of lint, scale or other foreign debris that restricts or
blocks the air openings to the burner or heater.
Valve with a properly rated/sized new one, see Temperature-Pressure
Relief Valve on pages 12-13 for instructions on replacement.
NOTE:
1. Remove main burners from unit.
2. Check that burner venturi and ports are free of foreign debris.
3. Clean burners with bristle brush and/or vacuum cleaner - DO
NOT distort burner ports or pilot location.
4. Reinstall burners in unit. Make sure front and rear of burners
are installed correctly in burner support brackets.
Also check for good flow of combustion and ventilating air to the
unit. Maintain a clear area around the heater at all times.
Figure 26.
If the Temperature-Pressure Relief Valve on the water heater weeps
or discharges periodically, this may be due to thermal expansion.
Venting System
Examine the venting system every six months for obstructions
and/or deterioration of the vent piping.
NOTE: Excessive water pressure is the most common cause of
Temperature-Pressure Relief Valve leakage. Excessive water
system pressure is most often caused by "thermal expansion"
in a "closed system." See Closed Water Systems and Thermal
Expansion on page 12. The Temperature-Pressure Relief Valve is
not intended for the constant relief of thermal expansion.
Remove all soot or other obstructions from chimney which will
retard free draft.
Remote Storage Tank Temperature Control
The water temperature in the remote storage tank (if used) is
controlled by the storage tank temperature control. The sensing
element is mounted in the hot water storage tank, see Water
Piping Diagram section.
Temperature-Pressure Relief Valve leakage due to pressure build
up in a closed system that does not have a thermal expansion
tank installed is not covered under the limited warranty. Thermal
expansion tanks must be installed on all closed water systems.
A change in water temperature in the storage tank lower than
the tank temperature control setting will cause the sensor to
activate the circulating pump. The pump then circulates the water
through the heater where the thermostat senses the drop in water
temperature and activates main burner operation of the appliance.
DO NOT PLUG THE TEMPERATURE-PRESSURE RELIEF
VALVE OPENING. THIS CAN CAUSE PROPERTY DAMAGE,
SERIOUS INJURY OR DEATH.
27
Draining and Flushing
Explosion Hazard
Burn harzard.
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22CSA 4.4 and ASME code.
Hot water discharge.
Keep hands clear of drain
valve discharge.
Properly sized temperaturepressure relief valve must be
installed in opening provided.
Can result in overheating and
excessive tank pressure.
It is recommended that the water heater storage tank be drained
and flushed every 6 months to reduce sediment buildup. The
water heater should be drained if being shut down during freezing
temperatures. See Features And Components in this manual for
the location of the water heater components described below.
Can cause serious injury or death.
To Drain the Water Heater Storage Tank:
1. Turn off the gas and electrical supply to the water heater.
2. Turn off the gas supply at the Main Gas Shutoff Valve if the
water heater is going to be shut down for an extended period.
3. Ensure the cold water inlet valve is open.
4. Open a nearby hot water faucet and let the water run until
the water is no longer hot.
5. Close the cold water inlet valve to the water heater.
6. Connect a hose to the water heater drain valve and terminate
it to an adequate drain.
7. Open the water heater drain valve and allow all the water to
drain from the storage tank.
8. Close the water heater drain valve when all water in the
storage tank has drained.
9. Close the hot water faucet opened in Step 4.
10. If the water heater is going to be shut down for an extended
period, the drain valve should be left open.
Hot Water Odor
On occasion, hot water may develop a strong odor. If this occurs
drain the heater completely, flush thoroughly, and refill. If the problem
persists, chlorination of the heater and replacement of magnesium
anodes with aluminum anodes may correct the condition.
Occasionally water softener companies recommend removal of
heater anodes for odor reasons.
Unauthorized removal of the anode(s) will void the warranty. For
further information contact your dealer.
Anode Rod Inspection
CAUTION
Property Damage Hazard
To Flush the Water Heater Storage Tank:
1. Turn off the electrical supply to the water heater.
2. Ensure the cold water inlet valve is open.
3. Open a nearby hot water faucet and let the water run until
the water is no longer hot. Then close the hot water faucet.
4. Connect a hose to the drain valve and terminate it to an
adequate drain.
5. Ensure the drain hose is secured before and during the
entire flushing procedure. Flushing is performed with system
water pressure applied to the water heater.
6. Open the water heater drain valve to flush the storage tank.
7. Flush the water heater storage tank to remove sediment and
allow the water to flow until it runs clean.
8. Close the water heater drain valve when flushing is completed.
9. Remove the drain hose.
10. Fill the water heater - see Filling The Water Heater in this manual.
11. Turn on the electrical supply to place the water heater back
in operation.
12. Allow the water heater to complete several heating cycles to
ensure it is operating properly.
• Avoid water heater damage.
• Inspection and replacement of anode rod required.
The anode rod is used to protect the tank from corrosion. Most
hot water tanks are equipped with an anode rod. The submerged
rod sacrifices itself to protect the tank. Instead of corroding the
tank, water ions attack and eat away the anode rod. This does
not affect water’s taste or color. The rod must be maintained to
keep the tank in operating condition.
Anode deterioration depends on water conductivity, not necessarily
water condition. A corroded or pitted anode rod indicates high
water conductivity and should be checked and/or replaced more
often than an anode rod that appears to be intact. Replacement
of a depleted anode rod can extend the life of your water heater.
Inspection should be conducted by a qualified service agency, and
at a minimum should be checked annually after the warranty period.
Artificially softened water is exceedingly corrosive because the
process substitutes sodium ions for magnesium and calcium ions.
Recommended Procedure for Periodic
Removal of Lime Deposits from Tank Type
Commercial Water Heaters
The use of a water softener may decrease the life of the water
heater tank.
The anode rod should be inspected after a maximum of three years
and annually thereafter until the condition of the anode rod dictates
its replacement. Anode replacement is not covered by warranty.
The amount of calcium carbonate (lime) released from water is
in direct proportion to water temperature and usage, see chart.
The higher the water temperature or water usage, the more lime
deposits are dropped out of the water. This is the lime scale
which forms in pipes, heaters and on cooking utensils.
NOTE: Artificially softened water requires the anode rod to be
inspected annually.
28
Tank Cleanout Procedure
Lime accumulation not only reduces the life of equipment but also
reduces efficiency of the heater and increases fuel consumption.
The following practices will ensure longer life and enable the
unit to operate at its designed efficiency:
The usage of water softening equipment greatly reduces the hardness
of the water. However, this equipment does not always remove all of
the hardness (lime). For this reason it is recommended that a regular
schedule for deliming be maintained.
1. Once a month the heater should be flushed. Open the
drain valve and allow two gallons of water to drain from the
heater. Inlet water valve should remain open to maintain
pressure in tank.
The time between cleaning will vary from weeks to months
depending upon water conditions and usage.
2. A cleanout opening is provided for periodic cleaning of
the tank. Gas must be shut off and heater drained before
opening cleanout.
The depth of lime buildup should be measured periodically. Heaters
equipped with cleanouts will have about 2" of lime buildup when
the level of lime has reached the bottom of the cleanout opening. A
schedule for deliming should then be set up,based on the amount
of time it would take for a 1" buildup of lime. It is recommended that
the water heater initially be inspected after 6 months.
To clean heater through cleanout opening, proceed as
follows:
3. Drain heater.
Example 1:
Initial inspection after 6 months shows 1/2" of lime accumulation.
Therefore, the heater should be delimed once a year.
4. Remove outer cover plate from lower side of heater jacket.
Example 2:
Initial inspection after 6 months shows 2" of lime accumulation.
Therefore, the heater should be delimed every 3 months.
6. Remove lime, scale, or sediment using care not to damage
the glass lining.
5. Remove six (6) hex head screws securing tank cleanout plate
and remove plate.
7. Inspect cleanout plate gasket, if new gasket is required,
replace with part no. 9004099215.
8. Install cleanout plate. Be sure to draw plate up tight by
tightening screws securely.
9. Replace outer jacket cover plate.
In some water areas the sediment might not be removed by this
method and may result in the water heater making rumbling or
boiling noises. To dissolve and remove these more stubborn
mineral deposits, UN•LIME Professional Delimer should be used.
Deliming Using FLO-JUG Method
UN•LIME in the 5 gallon size is recommended for deliming of all
models. Contact your local dealer, distributor or, water heater
manufacturer.
Prepare the Water Heater
To delime the water heater using the Flo-Jug method, first
prepare the heater for deliming.
Figure 27.
Explosion Hazard
Deliming Solvents
UN LIME is recommended for deliming. UN•LIME is a patented
food grade acid which is safe to handle and does not create the
harmful fumes which are associated with other products.
Flammable hydrogen gases
may be present.
UN•LIME may be obtained from your dealer, distributor or water heater
manufacturer. Order Part Number 9005416105, 1 gallon, packed 4 gallons
per case or Part Number 9005417105, 5 gallon container.
Keep all ignition sources away
from faucet when turning on
hot water.
NOTE: Un•Lime is not available for use in Canada.
Hydrochloric base acids are not recommended for use on glass
lined tanks.
Do not smoke or have open flame or sparks in vicinity of heater.
Do not mix UN•LIME with other chemicals. Do not allow contact
with magnesium, aluminum or galvanized metals.
Observe handling instructions on label of product being used.
29
threads. Tighten firmly by hand and use wrench or adjustable
pliers to check for secure connection. Do not over tighten to
avoid damage to threads and fittings.
Chemical Hazard
Prepare the Up-N-Down Transfer Kit
The next step is the preparation on the Up-N-Down Transfer Kit,
if you have not already done so:
• Product contains phosphoric acid.
• Keep out of reach of children.
1. With the 5 gallon Up-N-Down container in the vertical position,
unscrew the plastic vent cap in the handle and pierce the
plastic membrane over the vent boss under the cap to allow
the container to vent.
• Use rubber or neoprene gloves.
Contains phosphoric acid. In case of external contact, flush
with cool water. If irritation persists, get medical attention. If
swallowed, give 1 or 2 glasses of water or milk and call physician.
Note: If your container does not have the vent cap and vent
boss, drill a 3/16” hole in the handle. When you have finished
deliming you will be able to plug this drilled vent with the
stainless steel screw that is supplied with the kit.
Get immediate medical attention for eyes. Keep out of reach of
children.
2. Remove the container’s cap and cut the plastic membrane
located in the 3/4” IPT opening in the cap. Take care to not
damage the threads.
NOTE: THE USE OF RUBBER OR NEOPRENE GLOVES IS
RECOMMENDED, ESPECIALLY IF YOU HAVE ANY OPEN SORES
OR CUTS TOAVOID UNNECESSARY IRRITATION OR DISCOMFORT.
3. Find the 3/4” male adapter, apply teflon tape to the threaded
end and screw it into the 3/4” IPT opening in the cap.
1. Turn off fuel and/or power supply to heater. Also, turn off power
to any electrical device or equipment, which is attached, or
part of the system.
4. Put cap with male adapter back on the container and slide
3/4” hose over end of male adapter and fasten in place using
hose clamp provided.
2. Open hot water side of faucet closest to heater and allow
water to run until it is cool enough to handle safely.
3. Close cold water inlet valve to heater.
Delime using Flo-Jug Method
4. Connect hose to drain valve at bottom of heater and start
draining heater into suitable floor drain area.
5. Slide the hose clamp over end of hose and slide hose over the
male adapter in the water heater drain opening and secure in
place using hose clamp.
5. Remove relief valve while heater is draining. NOTE: Do not
replace relief valve until deliming is completed. Relief valve
opening will also act as a vent in case of possible contact
between the delimer and the anode rod(s), which may
produce flammable hydrogen-air mixtures.
6. Lift container to the “Pour” Position, see Figure 28, being
careful to keep the vent in the handle above the liquid level
and pour the UN•LIME into the heater.
7. Lower container, you may have to place the container on its
empty carton to prevent the UN•LIME from flowing back into
the container.
6. If relief valve appears to be limed-up, place it in a clean glass or
plastic container adequate in size so that you can pour enough
UN•LIME® into the container to cover the valve and allow
space for foaming. When foaming stops, run fresh cool water
into the container and rinse the relief valve for a few minutes.
8. Let UN•LIME remain in the heater for 5 minutes and then
lower the container to the “Drain” Position, see Figure 28.
9. Deliming activity is indicated by foaming on the surface of the
UN•LIME. If there is deliming activity, repeat steps 6 thru 8.
7. If heater does not drain completely after a reasonable length
of time, turn off the main water supply valve to stop water from
entering the tank due to a by-pass problem or defective cold
water inlet valve. Also, check for clogged drain valve opening.
Heater must be completely drained before introducing
UN•LIME.
Normally, lime removal will be completed within one hour. Severe
build-up of lime may take longer than an hour to complete descaling.
Note: To check UN•LIME for continued use, place some scale
or white chalk in a glass with a small amount of UN•LIME. If
the material is vigorously dissolved by the UN•LIME, it can be
reused; if not, the UN•LIME should be replaced.
8. Remove the cleanout cover and place a clean plastic bucket
next to the cleanout opening.
Partially open the cold water inlet valve to allow time to
accomplish the following and then close the valve.
While the water is being run through the tank, insert a stiff
wire, copper tube flattened at one end or an opened wire coat
hanger through the cleanout opening and scrape out any
loose deposits of scale or sediment. This is an economical
way to avoid unnecessary usage of the deliming solution.
Repeat the opening and closing of the cold water inlet valve
as necessary but be sure the heater is completely drained
when ready to introduce the UN•LIME.
Upon completion, reinstall the cleanout cover and use a new
cleanout cover gasket (part number 9004099215).
Remove the drain valve.
9. Install the long plastic male adapter insert fitting into the drain
valve opening of heater after applying Teflon tape or paste to
Figure 28.
30
SERVICE
The installer may be able to observe and correct certain problems
which may arise when the unit is put into operation. HOWEVER,
it is recommended that only qualified service agents, using
appropriate test equipment, be allowed to service the heater.
Table 8:
1 FLASH
As preliminary step, check wiring against diagram, check for
grounded, broken or loose wires. Check all wire ends to be sure
that they are making good contact.
System lockout (retries or cycles exceeded)
2 FLASHES Pressure switch stuck close
3 FLASHES Pressure switch stuck open
Ignition control System
4 FLASHES Open on high temperature limit switch (eco)
Before calling your service agent, the following checklist should
be examined to eliminate obvious problems from those requiring
replacement or servicing.
6 FLASHES 115 volt AC power reversed (check polarity)
• Check that “main manual gas shutoff valve” is fully open and
that gas service has not been interrupted.
7 FLASHES
• Check that after following the appliance OPERATING
INSTRUCTIONS, the “Top Knob” of the appliance gas valve
is in “ON” position.
8 FLASHES Check igniter
Low flame sense signal (make sure flame
sensor is in burner flame)
continuous flash -> continuous flame sensed > 5 seconds
without gas valve
• Check electrical supply to the appliance for possible blown
(or tripped) fusing or power interruption. Also check the 3
amp fuse on the front of the digital thermostat (Fig. 2).
continuous on -> internal control failure - replace ignition control
control.
• Is the water temperature in tank below the thermostat dial
setting on the appliance thermostat (calling for heat)?
Use this diagnostic system in conjunction with the table titled
“Troubleshooting” and the “SEQUENCE OF OPERATION”
to troubleshoot the appliance.
• It is possible that the high limit (E.C.O.) has functioned to
shut off the appliance. See High Limit page 7 - High Limit
Switch for reset procedure. Contact your service agent if
limit continues to function to shut off appliance.
Electrical Servicing
System Diagnostics
LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN
SERVICING CONTROLS. WIRING ERRORS CAN CAUSE
IMPROPER AND DANGEROUS OPERATION.
Your water heater is equipped with an ignition control that
incorporates a diagnostic system to assist in troubleshooting the
appliance. The indicator codes on the ignition control are as follows:
VERIFY PROPER OPERATION AFTER SERVICING.
31
For your information
Start Up Conditions
c. A sulfate reducing bacteria which has accumulated
within the water heater (this harmless bacteria is
nontoxic to humans).
SMOKE/ODOR
It is not uncommon to experience a small amount of smoke and
odor during the initial start-up. This is due to burning off of oil
from metal parts, and will disappear in a short while.
d. An excess of active hydrogen in the tank. This is caused
by the corrosion protective action of the anode.
Hot water odor may be eliminated or reduced in some water heater
models by replacing the anode(s) with one of less active material,
and then chlorinating the water heater tank and all water lines.
STRANGE SOUNDS
Possible noises due to expansion and contraction of some metal
parts during periods of heat-up and cool-down do not necessarily
represent harmful or dangerous conditions.
Contact the local water heater supplier or service agency for
further information regarding anode replacement and this
chlorination treatment.
Condensation causes sizzling and popping within the burner area
during heating and cooling periods and should be considered
normal. See “Condensation” in this manual.
If the hot water odor persists after the anode replacement and
chlorination treatment, we can only suggest that chlorination
or aeration of the water supply be considered to eliminate the
water problem.
CONDENSATION
Whenever the water heater is filled with cold water, some
condensate will form while the burner is on. A water heater may
appear to be leaking when in fact the water is condensation.
This usually happens when:
Do not remove the anode leaving the tank unprotected. By doing
so, all warranty on the water heater tank is voided.
“AIR” IN HOT WATER FAUCETS
a. A new water heater is filled with cold water for the first time.
HYDROGEN GAS: Hydrogen gas can be produced in a hot
water system that has not been used for a long period of time
(generally two weeks or more). Hydrogen gas is extremely
flammable and explosive. To prevent the possibility of injury under
these conditions, we recommend the hot water faucet, located
farthest away, be opened for several minutes before any electrical
appliances which are connected to the hot water system are used
(such as a dishwasher or washing machine). If hydrogen gas is
present, there will probably be an unusual sound similar to air
escaping through the pipe as the hot water faucet is opened.
There must be no smoking or open flame near the faucet at the
time it is open.
b. Burning gas produces water vapor in water heaters,
particularly high efficiency models where flue temperatures
are lower.
c. Large amounts of hot water are used in a short time and the
refill water in the tank is very cold.
Moisture from the products of combustion condense on the cooler
tank surfaces and form drops of water which may fall onto the
burner or other hot surfaces to produce a “sizzling” or “frying” noise.
Operational Conditions
hot water odor
HIGH WATER TEMPERATURE SHUT OFF SYSTEM
The water heater has at least one anode rod for corrosion
protection of the tank. Certain water conditions will cause a
reaction between this rod and the water. The most common
complaint associated with the anode rod is one of a “rotten egg
smell” in the hot water. The smell is a result of four factors which
must all be present for the odor to develop:
This water heater is equipped with a manual reset type high limit
(Energy Cutout) switch. The high limit switch interrupts the main
burner gas flow should the water temperature reach 203°F (95°C).
In the event of high limit switch operation, the water heater
cannot be restarted unless the water temperature is reduced to
approximately 120°F (49°C). The high limit reset button on the
front of the thermostat then needs to be depressed. See Figure 2
for the location of the reset button.
a. A concentration of sulfate in the supply water.
b. Little or no dissolved oxygen in the water.
32
Troubleshooting
COMPLAINT
CAUSE
USER
REMEDY
Qualified Service Agency
Thermostat set too low.
Set thermostat dial to a higher
temperature
Upper and/or lower temperature
probe out of calibration.
Call qualified service agency
Thermostat set too low.
Set thermostat dial to a higher
temperature
Upper and/or lower temperature
probe out of calibration.
Call qualified service agency
Main manual gas shutoff valve
partially closed.
Open main manual gas shutoff
valve to fullest extent.
Heater too small for demand.
Space usage to give heater time
to restore water temperature.
Heater recovery is slower.
Call qualified service agency
Water temperature too hot.
Thermostat set too high.
Set thermostat to a lower setting.
Heater makes sounds: sizzling.
Condensation on outside of
tank, normal.
Rumbling.
Sediment accumulation on
bottom of tank.
Ticking or metallic sounds.
Expansion and contraction normal.
Pounding or water hammer.
Air chambers in piping have
become waterlogged. Thermal
expansion tank damaged,
improperly charged, or
improperly sized.
Drain piping system and refill.
Heater must be off while this
is being done. Check thermal
expansion tank charge pressure
when the water system pressure
is zero.
Too much primary air.
Call qualified service agency.
Overfired heater; Incorrect
burners or orifice for type of gas
used.
Call qualified service agency.
Drain valve not closed tightly.
If drain valve cannot be closed
tightly, replace.
Possible condensation if tank
is undersized or stored water is
below 110 degrees.
Increase tank temperature
setting (have service agent add
a mixing valve if setting will be
above 120 degrees).
If leakage source cannot be
corrected or identified, call
qualified service agency.
Shut off gas supply to heater
and close cold water inlet valve
to heater.
Repair or in case of suspected tank
leakage, be certain to confirm before
replacing heater.
Shut off gas supply to heater
and call a qualified service
agency.
Check for sooted flue passage.
Heater is over fired
Possible gas leaks.
Shut off gas supply to heater
and call gas company at once
*Water not hot enough
*Insufficient hot water
*See WATER TEMPERATURE
CONTROL WARNING (on page
12).
Combustion noises.
Water leaks.
Gas odors.
Check continuity and resistance (Ohms)
of upper and lower temperature probes.
Replace probes if out of specification.
Check continuity and resistance (Ohms)
of upper and lower temperature probes.
Replace probes if out of specification.
Check gas input. If incorrect, adjust gas
pressure or replace burner orifices.
Drain a quantity of water through
drain valve. If rumbling persists, Delime heater.
call a qualified service agency.
33
Follow the manufacturer's instructions
for proper charging of the thermal
expansion tank.
Check and correct as necessary.
Check for obstructed vent line.
Check backdraft or lack of draft
34
ALT. COLD WATER
CONNECTION
HOT WATER
TO FIXTURES
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
4. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
5. The water heater’s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control.
FINISHED
FLOOR
PIPE T&P TO
OPEN DRAIN
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI FLUE - (1 UNIT) WITH VERTICAL STORAGE TANK
COLD WATER
SUPPLY
EXPANSION
TANK
DRAIN
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
HOT WATER RETURN
FROM FIXTURES
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
LEGEND
Water Piping Diagrams
35
HOT WATER TO FIXTURES
ALTERNATE
LOCATION
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
4. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
5. The water heater’s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control.
FINISHED
FLOOR
PIPE T&P TO
OPEN DRAIN
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI FLUE - (1 UNIT) WITH HORIZONTAL STORAGE TANK
DRAIN
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
EXPANSION
TANK
COLD WATER
SUPPLY
HOT WATER
RETURN FROM
FIXTURES
CIRCULATING PUMP
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
LEGEND
36
HOT
WATER
RETURN
TEMPERED
WATER
OUTLET
COLD
HOT
HOT
WATER
OUTLET
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
4. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
EXPANSION
TANK
COLD WATER
SUPPLY
TEMPERED
WATER
RETURN
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI FLUE - (1 UNIT) WITH MIXING VALVE TWO TEMPERATURE
DRAIN
PIPE T&P TO
OPEN DRAIN
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
LEGEND
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
37
PIPE T&P TO
OPEN DRAIN
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
4. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
PIPE T&P TO
OPEN DRAIN
HOT WATER
TO FIXTURES
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI FLUE - (2 UNITS)
COLD WATER
SUPPLY
EXPANSION
TANK
DRAIN
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
HOT WATER
RETURN
LEGEND
38
PIPE T&P TO
OPEN DRAIN
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
4. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
5. The water heater’s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control.
FINISHED
FLOOR
PIPE T&P TO
OPEN DRAIN
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI FLUE - (2 UNITS) WITH VERTICAL STORAGE TANK
ALTERNATE
COLD WATER
CONNECTION
HOT WATER
TO FIXTURES
DRAIN
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
COLD WATER
SUPPLY
HOT WATER
RETURN
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
EXPANSION
TANK
LEGEND
39
PIPE T&P TO
OPEN DRAIN
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
4. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
5. The water heater’s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control.
FINISHED
FLOOR
PIPE T&P TO
OPEN DRAIN
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI FLUE - (2 UNITS) WITH VERTICAL STORAGE TANK
ALTERNATE
COLD WATER
CONNECTION
HOT WATER
TO FIXTURES
DRAIN
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
COLD WATER
SUPPLY
HOT WATER
RETURN
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
EXPANSION
TANK
LEGEND
40
PIPE T&P TO
OPEN DRAIN
HOT WATER TO FIXTURES
DRAIN
EXPANSION
TANK
COLD WATER
SUPPLY
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
ALTERNATE
LOCATION
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
4. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
5. The water heater’s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control.
FINISHED
FLOOR
PIPE T&P TO
OPEN DRAIN
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI FLUE - (2 UNITS) WITH HORIZONTAL STORAGE TANK
LEGEND
HOT WATER
RETURN FROM
FIXTURES
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
41
EXPANSION TANK
COLD WATER
SUPPLY
HOT WATER
RETURN
HOT WATER
TO FIXTURES
PRE-HEATED
WATER TO
BOOSTER
DRAIN
BOOSTER
HEATER
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
BOOSTER WATER RETURN
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
BOOSTER WATER
TO FIXTURES
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
1st HEATER
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI FLUE (2 UNITS) TWO TEMPERATURE
LEGEND
42
PRE-HEATER
PRE-HEATER
MUST BE IDENTICAL HEATERS
PIPE T&P TO
OPEN DRAIN
DRAIN
BOOSTER RETURN
(IF USED)
EXPANSION
TANK
COLD WATER
SUPPLY
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
HOT OUTLET
AT STORED
TEMPERATURE
BOOSTED
WATER
OUTLET
TYPICAL
BOOSTER
HEATER
PIPE T&P TO
OPEN DRAIN
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
FINISHED FLOOR
PIPE T&P TO
OPEN DRAIN
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI FLUE (2 UNITS) WITH BOOSTER TWO TEMPERATURE
LEGEND
HOT WATER
RETURN
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
43
PIPE T&P TO
OPEN DRAIN
PIPE T&P TO
OPEN DRAIN
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
PIPE T&P TO
OPEN DRAIN
HOT WATER
TO FIXTURES
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI-FLUE (3 UNITS)
DRAIN
EXPANSION
TANK
COLD WATER
SUPPLY
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
LEGEND
HOT WATER
RETURN
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
44
HEATER
PIPE T&P TO
OPEN DRAIN
HEATER
PIPE T&P TO
OPEN DRAIN
HEATER
PIPE T&P TO
OPEN DRAIN
DRAIN
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
ALT. COLD WATER
CONNECTION
EXPANSION TANK
HOT WATER
RETURN
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
COLD WATER
SUPPLY
LEGEND
TEMPERATURE & PRESSURE
RELIEF VALVE
HOT WATER TO FIXTURES
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
4. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
5. The water heater’s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control.
FINISHED FLOOR
PIPE T&P TO
OPEN DRAIN
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI-FLUE (3 UNITS) WITH VERTICAL STORAGE TANK
STORAGE TANK
45
HEATER
PIPE T&P TO
OPEN DRAIN
HEATER
PIPE T&P TO
OPEN DRAIN
HEATER
STORAGE TANK
HOT WATER TO FIXTURES
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
4. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
5. The water heater’s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control.
FINISHED FLOOR
PIPE T&P TO
OPEN DRAIN
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI-FLUE (3 UNITS) WITH HORIZONTAL STORAGE TANK
ALTERNATE
LOCATION
PIPE T&P TO
OPEN DRAIN
DRAIN
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
LEGEND
EXPANSION TANK
COLD WATER
SUPPLY
HOT WATER
RETURN
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
46
PIPE T&P TO
OPEN DRAIN
PIPE T&P TO
OPEN DRAIN
PIPE T&P TO
OPEN DRAIN
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
FINISHED FLOOR
HOT WATER
TO FIXTURES
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI FLUE FLUE (4 UNITS)
PIPE T&P TO
OPEN DRAIN
DRAIN
HOT WATER
RETURN
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
COLD WATER
SUPPLY
EXPANSION
TANK
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
LEGEND
47
HEATER
HEATER
PIPE T&P TO
OPEN DRAIN
HEATER
PIPE T&P TO
OPEN DRAIN
PIPE T&P TO
OPEN DRAIN
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
4. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
5. The water heater’s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control.
FINISHED FLOOR
PIPE T&P TO
OPEN DRAIN
HEATER
PIPE T&P TO
OPEN DRAIN
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI-FLUE (4 UNITS) WITH VERTICAL STORAGE TANK
STORAGE TANK
ALT. COLD
WATER
CONNECTION
HOT WATER
TO FIXTURES
DRAIN
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
EXPANSION
TANK
COLD WATER
SUPPLY
HOT WATER
RETURN
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
LEGEND
48
HEATER
HEATER
PIPE T&P TO
OPEN DRAIN
HEATER
PIPE T&P TO
OPEN DRAIN
DRAIN
STORAGE TANK
ALTERNATE
LOCATION
PIPE T&P TO
OPEN DRAIN
TANK TEMPERATURE CONTROL
CIRCULATING PUMP
PRESSURE RELIEF VALVE
TEMPERATURE & PRESSURE
RELIEF VALVE
HOT WATER
TO FIXTURES
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
4. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
5. The water heater’s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control.
FINISHED FLOOR
PIPE T&P TO
OPEN DRAIN
HEATER
PIPE T&P TO
OPEN DRAIN
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
MULTI-FLUE (4 UNITS) WITH HORIZONTAL STORAGE TANK
LEGEND
EXPANSION TANK
COLD WATER
SUPPLY
HOT WATER
RETURN
WATER FLOW SWITCH
TEMPERATURE GAGE
CHECK VALVE
FULL PORT BALL VALVE
MANIFOLD KITS
Manifold Kits
TWO UNIT MANIFOLD KIT
(PART NO. 9003426205)
MODEL
DIMENSIONS "A"
151/201
45.0"
THREE UNIT MANIFOLD KIT
(PART NO. 9003427205)
FOUR UNIT MANIFOLD KIT
(PART NO. 9003428205)
49
Limited Warranty
Limited
Warranty
A. O. Smith Corporation, the warrantor, extends the following LIMITED WARRANTY to the owner of this water heater.
1.
THE TANK
If the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water
therein, during the
THREE years after initial installation, the warrantor will supply a complete new A. O. Smith water heater of equivalent size and
current model. Some government agencies are requiring energy
standards for water heaters. In the event regulations prohibit sale of a model
of equivalent size and construction, A. O. Smith will provide a model which complies with the regulations of your area, in which case the consumer
will be charged the difference in price between the like replacement and the energy
model required. The warranty on the replacement water
heater will be limited to the unexpired term of the original warranty.
2.
ALL OTHER PARTS
If within ONE year after initial installation of this water heater, any part or portion shall prove upon examination by the warrantor to be defective in
material or workmanship, the warrantor will repair or replace such part or portion at its option.
3.
CONDITIONS AND EXCEPTIONS
This warranty shall apply only when the water heater is installed in accordance with local plumbing and building codes, ordina nces and regulations,
the printed instructions provided with it and good industry practices. In addition, a temperature and pressure relief valve,
by and
sanctioned and recognized independent testing agency and approved by the American Society of Mechanical Engineers, must have been installed.
a.
This warranty shall apply only when the heater is:
(1) used at temperatures not exceeding the maximum calibrated setting of its thermostat;
(2) used at water pressure not exceeding the working pressure shown on the heater;
with potable water, free to circulate at all times and with the tank free of damaging water sediment or scale deposits;
(3)
(4) used in a non-corrosive and non-contaminated atmosphere;
(5) used with factory approved anode(s) installed;
(6) in its original installation location;
(7) in the United States, its territories or possessions or Canada;
(8) sized in accordance with proper sizing techniques for commercial and/or residential water heaters;
(9) bearing a rating plate which has not been altered, defaced or removed, except as required by the warrantor;
(10) used in an open system or in a closed system with properly sized and installed thermal expansion tank;
(11) operated with properly installed sediment trap;
with the fuel for which it was factory built;
(12)
(13)
at the factory rated input;
(14) operated with the inner and outer combustion chamber doors in place.
b. Any accident to the water heater, any misuse, abuse (including freezing or thermal expansion damage) or alteration of, any operation in a
form, or any attempt to repair tank leaks will void this warranty.
c. This warranty is void if a device acting as a
prevention device (check valves etc.) is installed in the cold water supply the heater is connected to, unless an effective method of controlling thermal expansion is also installed at the heater(s) and operational at all times. The relief
valve installed on the heater is not an acceptable method.
4.
SERVICE AND REPAIR EXPENSES
Under the limited warranty the warrantor will provide only a replacement water heater or part thereof. The owner is responsible for all other costs.
Such costs may include but are not limited to:
a. Labor charges for service removal, repair or reinstallation of the water heater or any component part;
b. Shipping, delivery, handling, and administrative charges for forwarding the new heater or replacement part from the nearest distributor and
returning the claimed defective heater or part to such distributor.
c. All cost necessary or incidental for any material and/or permits required for installation of the replacement heater or part.
5.
LIMITATIONS ON IMPLIED WARRANTIES
Implied warranties, including the warranty of merchantability imposed on the sale of this heater under state law or local code are limited to one (1)
year duration for the heater or any of its parts. Some areas do not allow limitation on how long an implied warranty lasts, so the above limitation may
not apply to you.
6.
CLAIM PROCEDURE
Any claim under the warranty should be initiated with the dealer who sold the heater, or with any other dealer handling the warrantor’s products. If
this is not practicable, the owner should contact:
U.S. Customers
A. O. Smith
500 Tennessee Waltz Parkway
Ashland City, TN 37015
Telephone: (800) 323-2636
a. The warrantor will only honor replacement with identical or similar water heater or parts thereof which are manufactured or distributed by the
warrantor.
b. Dealer replacements are made subject to in-warranty validation by warrantor.
7.
DISCLAIMERS
NO OTHER EXPRESS WARRANTY HAS BEEN OR WILL BE MADE IN BEHALF OF THE WARRANTOR WITH RESPECT TO THE MERCHANTABILITY OF THE HEATER OR THE INSTALLATION, OPERATION, REPAIR OR REPLACEMENT OF THE HEATER. THE WARRANTOR SHALL NOT
BE RESPONSIBLE FOR WATER DAMAGE, LOSS OF USE OF THE UNIT, INCONVENIENCE, LOSS OR DAMAGE TO PERSONAL PROPERTY
OR OTHER CONSEQUENTIAL DAMAGE. THE WARRANTOR SHALL NOT BE LIABLE BY VIRTUE OF THIS WARRANTY OR OTHERWISE FOR
DAMAGE TO ANY PERSONS OR PROPERTY, WHETHER DIRECT OR INDIRECT, AND WHETHER ARISING IN CONTRACT OR IN TORT.
a. Some areas do not allow the exclusion or limitation of the incidental or consequential damage, so the above limitations or exclusions may not
apply to you.
legal rights, and you may also have other rights which vary from area to area.
b. This warranty gives you
Fill in the following for your own reference. Keep it. Registration is not a condition of warranty. The model and serial number are found on the heater’s
rating plate.
Model No. ____________________Serial No. _____________________________________________Date Installed__________________________
Dealer’s Name____________________________________________________________________________________________________________
Dealer’s Address ________________________________________________________________________ Phone No.________________________
City and State __________________________________________________________________________ Zip _____________________________
KEEP THIS WARRANTY POSTED ADJACENT TO THE HEATER FOR FUTURE REFERENCE.
50
Notes
51
www.hotwater.com
500 Tennessee Waltz Parkway, Ashland City, TN 37015
Tech Support: 800-527-1953
Parts: 800-433-2545
Copyright © 2012 A. O. Smith Water Heater Company, All rights reserved.
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