High Altitude Installations - American Water Heater Ultra Low NOx 104 Series Instruction Manual

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.
CIRCULATING PUMP WIRING DIAGRAM
STORAGE TANK OR BUILDING RECIRCULATION
NOTE: USE SEPARATE 120 VAC POWER
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH WATER HEATER AS
THIS MAY CAUSE ELECTRICAL LINE NOISE
AND LEAD TO ERRATIC CONTROL SYSTEM
OPERATION.
L1 HOT
120 VAC
POWER
L2 NEUTRAL
CIRCULATING PUMP WIRING DIAGRAM
DISHWASHER LOOP WITH TOGGLE SWITCH
DISHWASHER
TOGGLE
SWITCH
NOTE: USE SEPARATE 120 VAC POWER
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH WATER HEATER AS
THIS MAY CAUSE ELECTRICAL LINE NOISE
AND LEAD TO ERRATIC CONTROL SYSTEM
OPERATION.
L1 HOT
120 VAC
POWER
L2 NEUTRAL
figure 9.
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FIELD SUPPLIED TEMPERATURE CONTROL
INSTALLED IN THE STORAGE TANK
OR CIRCULATING LOOP RETURN LINE
CIRC
PUMP
MOTOR
FIELD SUPPLIED TEMPERATURE
CONTROL INSTALLED IN THE
CIRCULATING LOOP RETURN LINE
CIRC
PUMP
MOTOR

high altitude installations

CIRCULATING PUMP WIRING DIAGRAM
Fire and Explosion Hazard
DISHWASHER LOOP WITH TOGGLE SWITCH
Under no circumstances should the
DISHWASHER
input exceed the rate shown on the
TOGGLE
SWITCH
water heater's rating label.
NOTE: USE SEPARATE 120 VAC POWER
Overfiring could result in fire or
SUPPLY FOR PUMP CIRCUIT. DO NOT
SHARE POWER WITH WATER HEATER AS
explosion.
THIS MAY CAUSE ELECTRICAL LINE NOISE
AND LEAD TO ERRATIC CONTROL SYSTEM
Gas and carbon monoxide detectors are
OPERATION.
L1 HOT available.
120 VAC
POWER
L2 NEUTRAL
Breathing Hazard - Carbon Monoxide Gas
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.
Breathing carbon monoxide can cause brain damage or
death. Always read and understand instruction manual.
The water heaters covered by this manual are certified for use
without modification for altitudes up to 7,700 feet (2347 m). Do
not install these water heater models above 7,700 feet (2347 m)
elevation.
11
FIELD SUPPLIED TEMPERATURE
CONTROL INSTALLED IN THE
CIRCULATING LOOP RETURN LINE
CIRC
PUMP
MOTOR