Rinnai REU-KM3237FFUD-E Installation And User Manual page 34

TEMPERATURE CONTROLS - INSTALLATION
Universal Temperature Controller - MC-91
1. Determine the most suitable position for the temperature controller.
2. Drill 3 holes in the wall (fig.1), one for the cable and two for the securing screws. Fit wall
plugs if needed and ensure controller is level.
3. Run the cable provided through the hole in the wall ensuring that the end fitted with the
connector is nearest the controller (fig.2).
4. Remove the face plate from the controller using a flat screwdriver (fig.3). Take care not to
damage the cover.
5. Connect the cable to the temperature controller.
6. Fix the controller to the wall and fasten with the Phillips head screws supplied as shown in
(fig.4).
7. Remove the protective plastic film from the controller face.
8. Replace the face plate.
Connecting One or Two Controllers
1. Isolate the electric power supply.
2. Remove the retaining screw of the quick cable connector door located
at the base of the appliance (fig.5)
3. Thread the water controller cable through the weather seal of the cable
access hole (A) (fig.6) in the direction shown allowing sufficient cable
length so that the sheath of the cable can be secured with cable
clamp (B) supplied with the water controllers (fig.7)
4. Loosen the screws on terminals (C) and (D). Connect the spade
connectors of the controller cables to these terminals. Tighten
the screws on terminals (C) and (D). Polarity is not important,
either wire colour can be connected to either terminal (fig.8).
5. Return the quick cable connector door to the original position
taking care not to damage controller wires and replace the
retaining screw.
Connecting Three Controllers
Repeat steps 1, 2 and 3 above.
Cut the spade connectors from two of the controller cables to be
connected to the appliance (4 spade connectors should be cut
off) and discard. Connect the wires from these two cables and
terminate into two new spade connectors as shown in fig.9.
Spade connectors are supplied with the controllers.
Repeat steps 4 and 5 above
Connecting Four Controllers
Repeat steps 1, 2 and 3 above.
Cut the spade connectors from all four of the controller cables
to be connected to the appliance (8 spade connectors should
be cut off) and discard. Connect the wires of two cables and
terminate into two new spade connectors as shown in fig.9.
Repeat this for the remaining two cables. Spade connectors are
available from your local electrical component retailer.
Repeat steps 4 and 5 above.
34
fig.5
Fig.5
Fig.6
Fig.7
Fig.8
Fig.9