Install Instructions

Installation & Servicing Instructions Rinnai Q-Series

8 Electrical connections

The electrical connections to the boiler must be electrically grounded in accordance

with all applicable local codes and the latest revision of the National Electrical Code,

ANSI/NFPA-70. Installations should also conform with CSA C22.1 Canadian Electrical

Code Part 1 if installed in Canada.

Devices such as, outdoor sensor, room thermostat or temperature control, 3-way

valve (except Q175CN/Q175CP), temperature sensor or thermostat and an external

pump are all connected to the internal connection terminal. The connection terminal

is situated in the Control Tower.

Connecting incoming power

Lead the cable through the back part of the boiler using a strain relief and lead the

cable through the cable supports to the Control Tower. Use a step drill bit to create a

knockout in the black steel on the bottom of the boiler for a strain relief. A number of

predrilled holes can be enlarged to ﬁ t different strain relief and conduit connections.

Connect a power supply cable to the cable harness terminal strip that connects to

both the power switch on the front of the Control Tower and the terminal strip with

positions 1,2, and 3 on the inside of the Control Tower.

The boiler must be electrically grounded in accordance with local codes, or in

absence of local codes, with the National Electrical Code, ANSI/INFPA 70 and/

or the CSA C22.1, Electrical Code.

RISK OF ELECTRIC SHOCK.

Once the main power supply is on then there is 120V on terminals 1 to 12 when the

main switch at the front of the Control Tower is switched on.

- No changes may be made to the wiring of the boiler.

- All connections should be designed in accordance with the applicable

regulations.

- Label all wires prior to disconnection when servicing controls. Wiring errors

can cause improper and dangerous operation.

- Verify proper operation after operation servicing.

CAUTION