A.O. Smith BTC 201 User manual
COMMERCIAL GAS WATER HEATERS
Instruction Manual
PRINTED 0912 196308-002
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
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.
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; do
not use any phone in your building.
Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
If you cannot reach your gas supplier,
call the fire department.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
•
•
•
•
2
17
17
18
WATER HEATER INSTALLATION 19
19
Thermometers (not Supplied) 19
Water Piping Diagrams 19
19
Installation Diagrams - Top Inlet/Outlet Usage 20
Heater Wiring 21
Gas Piping 22
Supply Gas Regulator 22
Gas Line Leak Testing 22
Purging 22
START UP 23
Prior to Start Up 23
Initial Start Up 23
24
Gas Valves 24
24
Water Temperature Adjustment 24
SEQUENCE OF OPERATION 25
Lighting & Operation Label 25
26
MAINTENANCE 27
27
Igniter Assembly 27
27
Venting System 27
Remote Storage Tank Temperature Control 27
Temperature-Pressure Relief Valve Test 27
Hot Water Odor 28
28
Draining and Flushing 28
28
Deliming Solvents 29
29
Deliming Using FLO-JUG Method 29
SERVICE 31
Ignition Control System 31
31
31
FOR YOUR INFORMATION 32
Start Up Conditions 32
Operational Conditions 32
33
WATER PIPING DIAGRAMS 34
MANIFOLD KITS 49
LIMITED WARRANTY 50
NOTES 51
2
TABLE OF CONTENTS
SAFE INSTALLATION, USE AND SERVICE 3
APPROVALS 3
GENERAL SAFETY INFORMATION 4
5
5
Hydrogen Gas Flammable 5
INTRODUCTION 6
Abbreviations Used 6
6
Preparing for the Installation 6
FEATURES AND COMPONENTS 7
7
7
7
7
7
INSTALLATION CONSIDERATIONS 8
Rough In Dimensions 8
8
8
9
9
Installation On Combustible Flooring 10
10
Hard Water 10
10
High Altitude Installations11
Propane Installations11
Natural Gas Installations11
INSTALLATION REQUIREMENTS 12
Gas Supply Systems 12
Gas Pressure Requirements 12
Supply Gas Regulator 12
Power Supply 12
Water Temperature Control and Mixing Valves 12
13
Closed Water Systems 13
Thermal Expansion 13
Temperature-Pressure Relief Valve 13
Contaminated Air 14
Air Requirements 14
15
15
Vent Adapter 15
VENTING INSTALLATION 15
Venting 15
Multiple Heater Manifold 16
16
Outdoor Air Through Two Openings 16
Outdoor Air Through One Opening 16
16
3
SAFE INSTALLATION, USE AND SERVICE
DANGER
WARNING
CAUTION
CAUTION
DANGER indicates an imminently
hazardous situation which, if not avoided,
will result in injury or death.
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.
WARNING indicates a potentially hazardous
situation which, if not avoided, could result
in injury or death.
CAUTION indicates a potentially hazardous
situation which, if not avoided, could result in
minor or moderate injury.
CAUTION used without the safety alert
symbol indicates a potentially hazardous
situation which, if not avoided, could result in
property damage.
APPROVALS
4
GENERAL SAFETY INFORMATION
Fire Hazard
Do not install water heater on
carpeted floor.
Do not operate water heater if
flood damaged.
For continued protection against
risk of fire:
Fire or Explosion Hazard
Read instruction manual before
installing, using or servicing
water heater.
Avoid all ignition sources if you smell gas.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Use only the gas shown on the water heater rating label.
Keep ignition sources away from faucets after extended
periods of non-use.
Maintain required clearances to combustibles.
Do not expose water heater controls to excessive gas
pressure.
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.
Breathing Hazard - Carbon Monoxide Gas
Property Damage Hazard
All water heaters eventually leak.
•
Do not install without adequate drainage.
•
CAUTION
Fire and Explosion Hazard
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.
Use joint compound or Teflon tape
compatible with propane gas.
Fire and Explosion Hazard
Turn off gas lines during installation.
Contact a qualified installer or service
agency for installation and service.
Excessive gas pressure to gas valve can
cause serious injury or death.
Do not use water heater with any gas
other than the gas shown on the rating
label.
Turn off power to the water heater
before performing any service.
Electrical Shock Hazard
•
Label all wires prior to disconnecting
when performing service. Wiring errors
can cause improper and dangerous
operation.
•
Verify proper operation after servicing.
•
Failure to follow these instructions can
result in personal injury or death.
•
Jumping out control circuits or components can
result in property damage, personal injury or death.
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.
•
Any bypass or alteration of the water
heater controls and/or wiring will result
in voiding the appliance 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.
•
5
PRECAUTIONS
DO NOT USE THIS WATER HEATER
If the unit is exposed to the following, do not operate heater
GROUNDING INSTRUCTIONS
equipment grounding terminal or lead on the water heater,
HYDROGEN GAS FLAMMABLE
Explosion Hazard
Flammable hydrogen gases
may be present.
Keep all ignition sources away
from faucet when turning on
hot water.
by this water heater that has not been used for a long period of
SMOKING OR OPEN FLAME NEAR THE FAUCET AT THE
GENERAL SAFETY INFORMATION
Verify the power to the water heater is turned off before performing any service procedures.
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.
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
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.
Explosion Hazard
Overheated water can cause
water tank explosion.
Properly sized temperature and
pressure relief valve must be
installed in the opening provided.
Improper installation, use and service may result
in property damage.
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.
CAUTION
GENERAL SAFETY INFORMATION
6
ABBREVIATIONS USED
AHRI - Air-Conditioning, Heating and Refrigeration Institute
UL - Underwriters Laboratory
QUALIFICATIONS
QUALIFIED INSTALLER OR SERVICE AGENCY
ANSI Z223.1 2006 Sec. 3.3.83:
or through a representative is engaged in and is responsible
to perform a given task do not attempt to perform any of the
INTRODUCTION
PREPARING FOR THE INSTALLATION
warnings throughout the manual that you must read and be
7
THE ELIMINATOR (SELF-CLEANING SYSTEM)
the arrow does not point within the marked range on the pipe
Note: The Eliminator may have 1, 3 or 7 cross tubes.
FIGURE 1.
HIGH LIMIT SWITCH
DIGITAL THERMOSTAT
FIGURE 2.
ELECTRONIC IGNITION CONTROL
IGNITION CONTROL
FIGURE 3.
EXHAUST INDUCER (BLOWER ASSY.)
EXHAUST INDUCER
FIGURE 4.
UNCRATING
FEATURES AND COMPONENTS
8
ROUGH IN DIMENSIONS
TABLE 2. GAS AND ELECTRICAL CHARACTERISTICS
Model Gas Type Gas Supply Pressure Gas Manifold
Pressure Volts / Hz Amperes
Minimum Maximum
BTR(C) 151/201 Natural 120/60 <5
BTR(C) 151/201 Propane 120/60 <5
INSTALLATION CONSIDERATIONS
FIGURE 5.
TABLE 1. HEATER PERFORMANCE DATA (Recovery ratings based on 80% thermal efciency)
Model
Input
Rate
Btuh
Approx.
Tank
Cap.
Approx.
Eff . %
RECOVERY RATING CAPACITIES (GPH) AT TEMPERATURE RISE SHOWN
F
C
20°F
11°C
30°F
17°C
40°F
22°C
50°F
28°C
60°F
33°C
70°F
39°C
80°F
44°C
90°F
50°C
100°F
56°C
110°F
61°C
120°F
67°C
130°F
72°C
140°F
78°C
BTR(C)-151 150,000 NAT 32 Gal 80 GPH 727 485 364 291 242 208 182 162 145 132 121 112 104
121 Litres LPH 2752 1836 1378 1102 916 787 689 613 549 500 458 424 394
BTR(C)-151 150,000 LP 32 Gal 80 GPH 727 485 364 291 242 208 182 162 145 132 121 112 104
121 Litres LPH 2752 1836 1378 1102 916 787 689 613 549 500 458 424 394
BTR(C)-201 199,900 NAT 32 Gal 80 GPH 969 646 485 388 323 277 242 215 194 176 162 149 139
121 Litres LPH 3668 2445 1836 1469 1223 1049 916 814 734 666 613 564 526
BTR(C)-201 182,000 LP 32 Gal 80 GPH 882 588 441 353 294 252 221 196 177 160 147 136 126
121 Litres LPH 3339 2226 1669 1336 1113 954 837 742 670 606 557 515 477
9
FLAMMABLE ITEMS, PRESSURIZED CONTAINERS OR ANY
OTHER POTENTIAL FIRE HAZARDOUS ARTICLES MUST
HEATER OR CONNECTIONS WILL NOT RESULT IN DAMAGE
TO THE ADJACENT AREA OR TO LOWER FLOORS OF THE
CLEARANCES
TABLE 3.
MINIMUM CLEARANCES TO COMBUSTIBLES IN INCHES (mm)
MODEL
"A"
RIGHT
SIDE
"B"
LEFT
SIDE
"C"
BACK
"D"
CEILING
TABLE 4.
MINIMUM CLEARANCES TO NONCOMBUSTIBLE CONSTRUCTION
MODEL
"A"
RIGHT
SIDE
"B"
LEFT
SIDE
"C"
BACK
"D"
CEILING
0 0 0
LOCATING THE WATER HEATER
Property Damage Hazard
All water heaters eventually leak.
•
Do not install without adequate drainage.
•
CAUTION
Fire or Explosion Hazard
Read instruction manual before
installing, using or servicing
water heater.
Avoid all ignition sources if you smell gas.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Use only the gas shown on the water heater rating label.
Keep ignition sources away from faucets after extended
periods of non-use.
Maintain required clearances to combustibles.
Do not expose water heater controls to excessive gas
pressure.
SUCH AS GAS WATER HEATERS IN ROOMS, GARAGES OR
LIQUIDS OR ENGINE DRIVEN EQUIPMENT OR VEHICLES ARE
PERMIT OPERATION OF GAS APPLIANCES IN SUCH AREAS
THIS MAY REDUCE THE RISK IF LOCATION IN SUCH AN AREA
DO NOT INSTALL THIS WATER HEATER DIRECTLY ON A
CARPETED Instead the
INSTALLATION CONSIDERATIONS
10
INSULATION BLANKET
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.
Breathing Hazard - Carbon Monoxide Gas
• DO NOT apply insulation to the top of the water heater, as this
• DO NOT
• DO NOT
• DO NOT
• DO NOT
• DO
• DO
HARD WATER
CIRCULATION PUMPS
FIGURE 6.
INSTALLATION ON COMBUSTIBLE FLOORING
FIGURE 7.
Unit needs to be lifted in a way not to damage unit or laid
Slide leg extension under leg and the bolt up through the
Front of leg should line up with front of leg extension as
shown in Figure 7 to make sure weight of unit is distributed
11
Breathing Hazard - Carbon Monoxide Gas
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
Under no circumstances should
the input exceed the rate shown
on the water heater’s rating label.
Overfiring could result in damage to
the water heater and sooting.
Gas and carbon monoxide detectors
are available.
ACCORDANCE WITH CURRENT EDITION OF THE
CANADIAN INSTALLATIONS CONSULT CANADIAN
TO REPLACE ORIFICES WILL RESULT IN IMPROPER
AND INEFFICIENT OPERATION OF THE APPLIANCE
RESULTING IN THE PRODUCTION OF INCREASED
SAFE LIMITS WHICH COULD RESULT IN SERIOUS
CIRCULATING PUMP WIRING DIAGRAM
STORAGE TANK OR BUILDING RECIRCULATION
FIELD SUPPLIED TEMPERATURE CONTROL
INSTALLED IN THE STORAGE TANK
OR CIRCULATING LOOP RETURN LINE
CIRC
PUMP
MOTOR
L1 HOT
L2 NEUTRAL
120 VAC
POWER
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.
CIRCULATING PUMP WIRING DIAGRAM
DISHWASHER LOOP WITH TOGGLE SWITCH
FIELD SUPPLIED TEMPERATURE
CONTROL INSTALLED IN THE
CIRCULATING LOOP RETURN LINE
DISHWASHER
TOGGLE
SWITCH
CIRC
PUMP
MOTOR
L1 HOT
L2 NEUTRAL
120 VAC
POWER
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.
FIGURE 8.
CIRCULATING PUMP WIRING DIAGRAM
STORAGE TANK OR BUILDING RECIRCULATION
FIELD SUPPLIED TEMPERATURE CONTROL
INSTALLED IN THE STORAGE TANK
OR CIRCULATING LOOP RETURN LINE
CIRC
PUMP
MOTOR
L1 HOT
L2 NEUTRAL
120 VAC
POWER
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.
CIRCULATING PUMP WIRING DIAGRAM
DISHWASHER LOOP WITH TOGGLE SWITCH
FIELD SUPPLIED TEMPERATURE
CONTROL INSTALLED IN THE
CIRCULATING LOOP RETURN LINE
DISHWASHER
TOGGLE
SWITCH
CIRC
PUMP
MOTOR
L1 HOT
L2 NEUTRAL
120 VAC
POWER
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.
FIGURE 9.
HIGH ALTITUDE INSTALLATIONS
Fire and Explosion Hazard
Gas and carbon monoxide detectors are
available.
Overfiring could result in fire or
explosion.
Under no circumstances should the
input exceed the rate shown on the
water heater’s rating label.
12
When installing multiple water heaters in the same gas supply
POWER SUPPLY
1Ø (single phase), 60Hz, 15 amp power supply and must also
WATER TEMPERATURE CONTROL AND MIXING VALVES
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
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.
Some people are more likely to be permanently injured by
anyone using hot water provided by the water heater being
In addition to using the lowest possible temperature setting
should be installed at the water heater (see Figure 10) or at
TABLE 5.
Water Temperature
°F (°C)
Time for 1st Degree Burn
Time for Permanent Burns
2nd & 3rd Degree
110 (43)
116 (47) (pain threshold)
116 (47) 35 minutes 45 minutes
122 (50) 1 minute 5 minutes
131 (55)
140 (60)
149 (65)
154 (68) instantaneous
GAS SUPPLY SYSTEMS
pressures are stable and fall within requirements stated on the water
are properly sized for the water heater input and deliver the rating
pressure should be designed by gas delivery professionals for best
GAS PRESSURE REQUIREMENTS
Natural gas models require a minimum gas supply pressure of
SUPPLY GAS REGULATOR
The maximum allowable gas supply pressure for this water
gas pressure regulator in the gas supply line if inlet gas pressure
not less than the minimum supply gas line size for the water
INSTALLATION REQUIREMENTS
13
HOT WATER
OUTLET
TO TANK
INLET
CHECK
VALVE
MIXING
VALVE
COLD
WATER
INLET
TEMPERED WATER
OUTLET
12” TO 15”
(30-38 cm)
CHECK
VALVE
FIGURE 10.
DISHWASHING MACHINES
Note:
CLOSED WATER SYSTEMS
THERMAL EXPANSION
A properly sized thermal expansion tank must be installed on
TEMPERATURE-PRESSURE RELIEF VALVE
Explosion Hazard
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22-
CSA 4.4 and ASME code.
Properly sized temperature-
pressure relief valve must be
installed in opening provided.
Can result in overheating and
excessive tank pressure.
Can cause serious injury or death.
This water heater is provided with a properly rated/sized and
requirements for Relief Valves for Hot Water Supply Systems,
have its own properly sized, rated and approved Temperature-
For safe operation of the water heater, the Temperature-Pressure
Relief Valve must not be removed from its designated opening
14
Water Damage Hazard
Temperature-Pressure Relief Valve discharge
pipe must terminate at adequate drain.
•
CAUTION
T&P Valve Discharge Pipe Requirements:
Shall not be smaller in size than the outlet pipe size of the
Burn hazard.
Hot water discharge.
Keep clear of Temperature-
Pressure Relief Valve
discharge outlet.
The Temperature-Pressure Relief Valve must be manually
that (1) no one is in front of or around the outlet of the Temperature-
the Temperature-Pressure Relief Valve with a properly rated/sized
NOTE: The purpose of a Temperature-Pressure Relief Valve is
CONTAMINATED AIR
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.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
AIR REQUIREMENTS
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.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
15
for the openings is dependent on the method used to provide
EXHAUST FANS
Where exhaust fans are installed, additional air shall be
to the water heater and the risk of fire or explosion may
LOUVERS AND GRILLES
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
UNCONFINED SPACE
are installed, through openings not furnished with doors, are
Makeup air requirements for the operation of exhaust fans,
UNUSUALLY TIGHT CONSTRUCTION
CONFINED SPACE
VENTING INSTALLATION
THE INSTRUCTIONS IN THIS SECTION ON VENTING MUST
If any part of the vent system is exposed to ambient temperatures
FIGURE 11.
16
MULTIPLE HEATER MANIFOLD
Figure 12 and Table 6 should be used for horizontally manifolding
FIGURE 12.
FRESH AIR OPENINGS FOR CONFINED SPACES
OUTDOOR AIR THROUGH TWO OPENINGS
FIGURE 13.
OUTDOOR AIR THROUGH ONE OPENING
FIGURE 14.
2per kW) of the total
OUTDOOR AIR THROUGH TWO HORIZONTAL DUCTS
FIGURE 15.
2per kW) of the aggregate input
17
AIR FROM OTHER INDOOR SPACES
FIGURE 17.
2per kW) of the aggregate input rating
2
OUTDOOR AIR THROUGH TWO VERTICAL DUCTS
DO NOT refer to these illustrations for the purpose of vent
FIGURE 16.
2per kW) of the aggregate input
18
TECHNICAL DATA VENTING
TYPE B GAS VENT
Multiple Gas Fired Tank-Type Heaters
pipe, follow the installation diagram (Figure 12) and tables
TABLE 6. TECHNICAL DATA VENTING
MODEL 151
Input: 150,000 btu/hr Total Vent Height (Feet)
Vent Connector Size: 6 inches 6 8 10 15 20 30 50 100
Input (btu/hr) Rise Vent Connector Diameter (Inches)
150,000 6 6 6 6 6 6 6 6
150,000 6 6 6 6 6 6 6 6
150,000 6 6 6 6 6 6 6 6
Number of Heaters Combined Input (btu/hr) Manifold and Common Vent Diameter (Inches)
2300,000 8 7 7 7 7 6 6 6
3450,000 9 9 9 8 8 7 7 7
4600,000 10 10 10 9 9 8 8 7
MODEL 201
Input: 182,000 and 199,900 btu/hr Total Vent Height (Feet)
Vent Connector Size: 6 inches 6 8 10 15 20 30 50 100
Input (btuh/hr) Rise Vent Connector Diameter (Inches)
182,000 7 7 7 6 6 6 6 6
199,000 7 7 6 6 6 6 6 6
182,000 6 6 6 6 6 6 6 6
199,900 7 7 6 6 6 6 6 6
182,000 6 6 6 6 6 6 6 6
199,900 7 6 6 6 6 6 6 6
Number of Heaters Combined Input (btu/hr) Manifold and Common Vent Diameter (Inches)
2364,000 9 8 8 7 7 7 6 6
399,800 9 9 8 8 7 7 7 6
3546,000 10 10 9 9 8 8 7 7
599,700 10 10 10 9 9 8 8 7
4728,000 12 12 12 10 9 9 8 8
799,600 12 12 12 10 10 9 9 8
19
WATER HEATER INSTALLATION
remote storage tank that may be installed and piped to a
sized, rated and approved Temperature-Pressure Relief
T&P VALVE DISCHARGE PIPE
Explosion Hazard
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22-
CSA 4.4 and ASME code.
Properly sized temperature-
pressure relief valve must be
installed in opening provided.
Can result in overheating and
excessive tank pressure.
Can cause serious injury or death.
This water heater is provided with a properly rated/sized and
Water Damage Hazard
Temperature-Pressure Relief Valve discharge
pipe must terminate at adequate drain.
•
CAUTION
hazard to life, or property damage, the relief valve must be allowed
T&P Valve Discharge Pipe Requirements:
Shall not be smaller in size than the outlet pipe size of the
WATER LINE CONNECTIONS
For multiple water heater installations see Water Piping
This manual provides detailed installation diagrams (see pages
WATER (POTABLE) HEATING AND SPACE HEATING
to installation diagrams on pages 34-48 of this manual for
THERMOMETERS (NOT SUPPLIED)
WATER PIPING DIAGRAMS
This manual provides detailed water piping diagrams for
heater may be installed by itself, or with a separate storage
Adjust flow by throttling a full port ball valve installed in the
Note:
20
INSTALLATION DIAGRAMS - TOP INLET/OUTLET USAGE
TUBE INLET INSTALLATION
FIGURE 18
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 ANTI-
SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES.
This manual suits for next models
1
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