29
2.7.3 CONDENSATE PUMP SAFETY SWITCH WIRING
The steps in this section must conform with local codes.
The condensate pump (if installed) should be wired to deactivate the water heater in the event the
condensate pump fails.
1.
Disconnect power from the water heater.
2.
Open the water heater cover and locate 2 white wires labeled
“To condensate pump safety switch.” in the PCB.
3.
Cut crimp connectors off white wires and strip the insulation
off of the two ends.
4.
Select an appropriate length of wire (0,75 mm
2
or greater) and
strip the insulation off the ends. Follow the wiring guidelines
established by local code.
5.
With wire nuts or other approved wire connectors, connect
the “To condensate pump safety switch” wires to the normally
open contacts on the condensate pump (see image below).
6.
Reconnect power to the water heater and press the “On/Off ”
button on the controller.
Test operation
1.
Test the operation of the shut off switch by unplugging the condensate pump and fi lling the condensate reservoir
with water until the fl oat switch closes the circuit.
2.
Turn on the water heater.
3.
The water heater displays diagnostic code “25.”
4.
Plug the condensate pump in and confi rm condensate is fl owing out of the reservoir.
5.
Turn off the water heater by pressing the “On/Off ” button on the controller. Wait 5 seconds then turn the power
back on. This will clear the diagnostic code.
IMPORTANT
NOTE
Cut off crimp
connectors
Strip insulation
off both ends
of wire
TO C
ONDENSA
TE
SAFE
TY SWIT
CH
Condensate pump (installer-supplied)
includes internal safety switch and power cord.
Power cord must be plugged into power source.
TO CONDENSA
TE
SAFE
TY SWIT
CH
To condensate pump
safety switch wires
Wire nut
connecting
two wires
Installer-supplied wires
Safety switch wires
Safety switch wires connect
to the NO and COM contacts
on the the safety switch.
COM
NO
NC
NO - Normally open
NC - Normally closed
COM - Common (neutral)
