Rinnai 31
Ducted Gas Heater IM
10. NETWORKER INSTALLATION: SINGLE AND
MULTIPLE CONNECTIONS
10.1 NETWORKER INSTALLATION
Networkers can be wired directly to SP4UN and BX5 series heaters.
The networker backing plate has four terminal points for the connection of control wires.
When making the connections, use only the two top terminals marked TW1 and TW2
or the two bottom terminals also marked TW1 and TW2. Never use a combination of
terminals when connecting to a single appliance. For example, a networker operating a
cooler and a heater would have the two bottom terminals connected to the heater and
the two top terminals connected to the cooler.
NOTE
Always ensure that the TW1 and TW2 polarity is correct at both ends of all connections: TW1 to
TW1 and TW2 to TW2.
10.2 CONNECT A NETWORKER TO SP4UN OR BX5 SERIES HEATERS
a.
Run a twin wire cable from the heater to the networker (for example, figure-eight cable, 0.75mm
2
).
b.
Remove the backing plate from the networker by unclipping it at the sides.
c.
Draw the wires from the wall cavity and feed them through the opening in the backing plate.
d.
Connect the cable to the terminal connections on the backing plate before mounting it on the wall and
reassembling the networker.
e.
Connect the other end of the cable to the terminals marked TW1 and TW2 in the heater’s electronic control
module, refer to Diagram 19.
NOTE
To connect multiple heaters, refer to Section 10.
Diagram 19. SP4UN Series Networker Connections
TW1
TW2
Networker
Backing Plate
SP4UN and BX5 Series Control Module
TW1
TW2
10.3 CONNECT A NETWORKER TO A BX5 HEATER
a.
Run a twin wire cable from the heater to the networker (for example, figure-eight cable, 0.75mm²).
b.
Remove the backing plate from the networker by unclipping it at the sides.
c.
Draw the wires from the wall cavity and feed them through the opening in the backing plate.
d.
Connect the cable to the terminal connections on the backing plate before mounting it on the wall and
reassembling the networker.
e.
At the heater, access the terminal block by removing the cover panel.
f.
Feed the cables through the grommet at the base of the unit to the heater terminal block.
g.
Connect to TW1 and TW2 on the heater terminal block, refer to Diagram 20.
