Rinnai HDC 1600i Low NOX Installation And User Manual page 35

TEMPERATURE CONTROLS
Universal Temperature Controller - MC-91-3A
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 the controller to the unit
1. Isolate the electric power supply.
2. Remove the front
appliance.
3. Remove the plastic cover from the
PCB and electrical connections.
4. Thread the cable through the access
hole at the base of the unit.
5. Connect the cable of the PCB (Fig.5).
6. Secure the controller cable using the
clamp provided and fix earth wire to
unit.
7. For safety reason, move the switch
no.2 of SW1 to "ON". (See page 41).
8. Replace the plastic cover of the PCB.
9. Replace the front panel.
Connecting Two, Three or Four* Controllers
Cut the connectors from all extra controller cables to be connected to the first.
Connect the wires of the cables to the cable already connected inside the appliance.
Polarity is not important when connecting the cables.
If more cable is needed any cable with similar specification to the cable supplied with the
controller can be used.
Maximum length from unit is 20 metres using up to 3 or 4 controllers (50m if just two).
* Note: Only 3 additional remotes can be wired to internal units (one remote is already installed
on front panel)
panel of the
35
Fig.5