Installation Guide

Rinnai I-Series Condensing Boiler Solo Manual 59
IMPORTANT
To connect the condensate drain pipe:
1. Apply thread sealant to 1/2 in. NPT
condensate drain port.
2. By hand, thread 1/2 in. NPT ng onto
condensate drain port.
3. Follow the steps in the next secon: “7.9
Condensate Pump Safety Switch Wiring.”
The condensate pump (if installed) should be
wired to deacvate the boiler in the event the
condensate pump fails.
1. Disconnect power from the boiler.
2. Open the boiler cover and locate two white
wires labeled “To Condensate Pump” (the
wires may be located behind the PC Board).
3. Cut crimp connectors o white wires and
strip the insulaon o of the two ends.
Cut o
crimp connectors
To Condensate Pump
Strip insulaon
o both ends
of wire
DO NOT use a wrench to ghten the
condensate drain pipe connecon as this
could cause the connecon to break.
IMPORTANT
The steps in this secon must conform with
local codes and the guidelines established by
the Naonal Electrical Code (NEC).
4. Select an appropriate length of wire (18
AWG or greater) and strip the insulaon
o the ends. Follow the wiring guidelines
established by the Naonal Electrical Code
(NEC).
5. With wire nuts or other approved wire
connectors, connect the “To Condensate
Pump” wires to the normally open
contacts on the condensate pump (see
image below).
6. Reconnect power to the boiler and press
the “On/O” buon on the controller.
Test Operaon
1. Test the operaon of the shut o switch
by unplugging the condensate pump and
lling the condensate reservoir with
water unl the oat switch closes the
circuit.
2. Turn on the boiler.
3. The boiler displays diagnosc code “250.”
4. Plug in the condensate pump and conrm
condensate is owing out of the
reservoir.
5. Turn o the boiler by pressing the “On/
O” buon on the controller. Wait ve
seconds, then turn the power back on.
This will clear the diagnosc code.
See visual illustraon on next page.
1/2 in.
NPT
Condensate
Drain