Communication Cables; Connecting Communication Cable(S) & 'Ezi Connect - Rinnai MC-100V Operation & Installation Manual

Communication Cables

Wired water controllers operate at an extra low voltage (12 Volts DC) which is supplied from the water heater,
a 10 metre long communications cable is supplied for connection to the water heater. ONLY Rinnai supplied
communication cables may be used. Optional longer communication cabling is available from Rinnai.
The water heater end of the cables are fitted with spade terminals. Only two pairs of cables (4 spade connectors in
total) may be terminated. When attaching three or four cables it is necessary to join the cable terminals as follows:
For each pair cut off the existing spade connectors and re-terminate each pair into a new spade connector
that there are only two sets of spade connectors (4 spade connectors in total) to be terminated (spade connectors
are available from your local electrical component retailer).
When
Terminating
Three Cables
Connecting Communication Cable(s) & 'Ezi connect'
DO NOT attempt to connect cables to the 'Ezi connect' cable connector at the water heater
unless the electric power to the water heater is switched 'off' otherwise damage to electrical
components may occur�
CAUTION
If your water heater is not fitted with an 'Ezi connect' cable connector, installation must be
completed by a qualified and licensed trades person.
C
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
3. Swing the 'Ezi connect' 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
B
secured with cable clamp
4. Loosen screw terminals
Polarity is not important, either wire colour can be connected to either terminal.
5. Return the 'Ezi connect' cable connector to the original position taking care not to damage cable wires in the
process and replace the retaining screw
Rinnai
A
A
B
D
E
of the 'Ezi connect' cable connector at the base of the appliance.
A
.
C
& and connect the cable spade connectors to these terminals and re-tighten.
D E
.
A
WATER CONTROLLER INSTALLATION
When
Terminating
Four Cables
15
so
A
A
A
A
B
HW_CF OIM