Controllers - Communication Cables - Rinnai Infinity VT16 REU-VR1620WG Installation Manual

Controllers - communication cables

Communication cables connect the water heater to the 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 (15 m) and are fitted with spade terminals for
connection to the water heater. Up to two cables can be connected to the cable connector at
the water heater.
Extension cables are available from Rinnai. Alternatively two core sheathed (double insulated)
flex with a minimum cross sectional area of 0.5 mm
cable lengths on p. 15).
Do not attempt to connect cables to the cable connector at the water heater unless the
electric power supply to the water heater is switched off otherwise damage to electrical
CAUTION
components may occur.
To connect up to two cables to the cable connector
1. Turn off power supply and unplug water heater from the power point.
2. Remove retaining screw of the cable connector at the base of the appliance.
3. Swing the cable connector door open. Thread the cable through the weather seal of the
cable access hole (B) in the direction shown allowing sufficient cable length so the cable
sheath can be secured with the cable clamp (C) supplied with the transceiver.
4. Loosen screw terminals (D) and (E) and connect 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.
Cable connector for VT26, VTa26, VT24, VT20, and VT16
Cable connector for HD250, HD200, HDi200, and EF models
Rinnai New Zealand Ltd.
may be used (refer maximum individual
2
B
B
C
Continuous Flow Water Heater Installation Manual:
19
C
D
E
D
E
03-11