Connecting Communication Cables To Pcb (Reu-E & Reu-Vcm); Universal Water Controller (Mc-601Q) Installation - Rinnai HD32e Operation & Installation Manual

WATER CONTROLLER INSTALLATION
Connecting Communication Cables to PCB (REU-E & REU-VCM)
Installation MUST be completed
CAUTION
person.
DO NOT attempt to connect mini-
plug or water controller cables
to the water heater unless the
electric power to the water heater is
electrical components may occur.
1. Isolate the electric power supply by
the power plug of the water heater from
the electric power socket.
2. Remove the front cover of the appliance.
3. Insert the mini-plug and the connected
water controller cables through the cable
access at the base of the appliance.
A
Ensuring that the cable connectors are
located inside the appliance for protection.
Locate the PCB
appliance), and carefully rotate the plastic
safety cover out of the way.
C
5. Locate the accessory port socket
(bottom front of the PCB).
6. Plug the mini-plug into the accessory port
socket (the plug and socket are keyed
D
so that they can only be plugged in the one
direction).
7. Proceed with
installation and connect the communication
cables to controllers.

UNIVERSAL WATER CONTROLLER (MC-601Q) INSTALLATION

1. Determine the most suitable position, refer "Location" on page 26.
2. Mark and drill 3 holes (mounting and cable access) refer to page 37 for water controller dimensions.
Controller Cable
Connector
Fig. 1
3. When running cable through the access hole ensure the connector end of the cable is located nearest to the
water controller (Fig. 1).
Carefully remove the cover plates from the water controller, using a screw driver (Fig. 2).
5. Connect the cable to the water controller. Feed any excess cable lengths into the wall cavity to avoid the
pinching of cables between the wall and the water controller.
6.
7.
Rinnai
, (bottom right of
B
D
the water controller
Fig. 2
B
REU-VCM PCB
Screws
Fig. 3
28
A
B
C
A
D
REU-E shown, REU-VCM is similar.
B
REU-E PCB
Cover
Plates
Fig. 4
D
Film
HW_CF OIM