Installation manual

Rinnai New Zealand 10 Installation Manual:01-7
CONNECTING COMMUNICATION CABLES TO THE WATER HEATER
Communication cables connect the water heater to water controllers and operate at an extra low
voltage (12 Volts DC) which is supplied from the water heater. Communication cables are supplied
with the water controllers (15m) and are fitted with spade terminals for connection to water heater. Up
to two cables can be connected directly to the cable connector at the water heater. Extension cables
are available from Rinnai. Alternatively, two core sheathed (double insulated) flex with minimum cross
sectional area of 0.5mm² may be used. Cable lengths must not exceed 20 metres.
To connect up to two cables to the cable connector
DO NOT attempt to connect cables to the cable connector at the water heater unless
the electric power to the water heater is switched ‘off’ otherwise damage to electrical
components may occur.
1. Isolate the electric power supply by switching the power point off and removing the power plug of
the water heater from the electric power socket.
2. Remove the retaining screw of the cable connector at the base of the appliance.
3. Swing the cable connector door open and thread the cable through the weather seal of the cable
access hole in the direction shown allowing sufficient cable length so that the sheath of the
cable can be secured with cable clamp supplied with the transceiver.
4. Loosen screw terminals and and connect the cable spade connectors to these terminals
and re-tighten. Polarity is not important, either wire colour can be connected to either terminal.
5. Return the cable connector to the original position taking care not to damage cable wires in the
process and replace the retaining screw .
Connecting Three or Four Controllers
Repeat steps 1, 2 and 3 above.
To connect three or four cables, seperate all the cables to be fitted into
pairs. Cut off the existing spade connectors from each pair and re-
terminate each pair into a new spade connector (available from your
local electrical component retailer) so that there are only two sets
of spade connectors (4 spade connectors in total) to be terminated.
Repeat steps 4 and 5 above.
CAUTION
A
B
C
D E
A
A
B
A
C
E
D
B
The cable connector for water heater models:The cable connector for water heater models:
INFINITY XR26, XR24, XR20, XR18, XR16 and HD200
INFINITY XR32, XR26i, HD250, HD250i, HD200i, and Efficiency24
F
Three
Cables
Four
Cables
F F F
WATER CONTROLLER INSTALLATION