Communication Cable; Connecting Communication Cables To The Water Heater - Rinnai MC502S Operation & Installation Manual

CONNECTING COMMUNICATION CABLES TO THE WATER HEATER

Communication cables connect the water heater to any wired water controllers and the wireless
transceiver and operate at an extra low voltage (12 Volts DC) which is supplied from the water heater.
Communication cables are supplied with the wired controllers (15m) and the transceiver (1.5m) and
are fitted with spade terminals for connection to water heater. Up to two cables can be connected
directly to the 'Quick connect' 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.
DO NOT attempt to connect cables to the 'Quick connect' cable connector at the water
heater unless the electric power to the water heater is switched 'off' otherwise damage
CAUTION to electrical components may occur.
If your water heater is not fitted with an 'Quick Connect' cable connector, installation
must be completed by a qualified and licensed tradesperson.
To connect up to two cables to the 'Quick Connect' cable connector
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
appliance.
3. Swing the 'Quick Connect' cable connector door open and thread the cable through the weather
seal of the cable access hole
sheath of the cable can be secured with cable clamp
4. Loosen screw terminals
and re-tighten. Polarity is not important, either wire colour can be connected to either terminal.
5. Return the 'Quick Connect' cable connector to the original position taking care not to damage
cable wires in the process and replace the retaining screw
C
'Quick connect' cable connector for water heater models:
INFINITY 16, 18, 20, 24, 26 XRPlus 26 XRPlus 20, and HD200
To connect three or four cables to the 'Quick Connect' cable connector, consult the
"CONNECTING WATER CONTROLLERS" section of the water heater Operation /
NOTE
Installation manual supplied with the water heater.
Rinnai New Zealand

COMMUNICATION CABLE

of the 'Quick Connect' cable connector at the base of the
A
in the direction shown allowing sufficient cable length so that the
B
and and connect the cable spade connectors to these terminals
D E
A
B
D
E
supplied with the transceiver.
C
.
A
'Quick connect' cable connector for water heater models:
INFINITY XR32, 26i and HD200i, HD250, HD250i
9
A
B
Operation Manual