American Standard 2939 - Manual (Page 32)

32 754532-100 Rev. A
ELECTRICAL INSTALLATION INSTRUCTIONS
(continued)
WHIRLPOOL HEATER OPERATION
Ensure the heater and pump are properly GROUNDED
and BONDED as required. Attach the 8 AWG solid
copper conductor supplied with the heater from the
heater bonding lug to the motor frame bonding lug as
shown in Figure 3.
The conductor is secured to the lugs using set screws.
The motor frame shall have a second 8 AWG solid
copper conductor connected from the frame bonding
lug to the home’s electrical panel or approved local
bonding point as shown in Figure 3.
NOTE: For all “EcoSilent” pump configurations, the
pump housing is plastic. Therefore, the first copper
conductor attached to the heater must be grounded
directly to the home’s electrical panel or approved local
bonding point. this type of configuration does not need
the second copper conductor shown in Figure 3.
RUN 8 AWG SOLID COPPER
CONDUCTORS FROM
HEATER BONDING LUG TO
PUMP/MOTOR FRAME LUG
AND FROM PUMP/MOTOR
LUG TO APPROVED
GROUND AS SHOWN
(PUMP/MOTOR)
TO GROUND
SECOND
COPPER
CONDUCTOR
FIRST COPPER
CONDUCTOR
PUMP/MOTOR FRAME WITH
BONDING LUGS
(NOT ON “ECOSILENT” MODELS)
HEATER ON
E-Z INSTALL ™ WHIRLPOOL HEATER
(HEATER)
FIGURE 3: GROUNDING DIAGRAM
FIGURE 4: WHIRLPOOL HEATER
INDICATOR LIGHT
WARNING: Prior to operation, review the Important Safety
Instructions listed at the beginning of this instruction manual.
Once the heater is installed and the whirlpool pump is operating,
the heater is totally automatic. The heater will help maintain the
temperature of the water in the bath.
Pressure Switch
The heater is equipped with a preset pressure switch. The pump
must be running with water flowing in the whirlpool to allow the
heater to turn on.
Indicator Light
This light turns on whenever the heater is operating.
High-Limit Switch
The heater includes an exclusive “Intelligent High-Limit”. This safety circuit will not “false trip” from hot tap water.
It will only turn the heater off if the thermostat fails. If the high-limit trips frequently, call a service technician.
To manually reset the circuit in the event that the “High-Limit” switch has been activated, simply
(1) Turn off the whirlpool pump.
(2) Drain water from the tub.
(3) Remove power from heater by unplugging at receptacle or turning off circuit breaker.
(4) The heater circuit will automatically reset in less than 15 minutes.
(5) Restore power to the heater.
(6) Whirlpool bath is now ready to use.
HEATER “ON” LIGHT
Bonding Lug on
Heater Housing
E-Z INSTALL ™ WHIRLPOOL
HEATER
FACTORY INSTALLED - NOT FOR RESALE
HEATER P/N: 753174-100