Installation manual

18
Figure 8: Heat pump electrical connections
Mains power supply
cable to be connected to
3.3.2 E LECTRICAL C ONNECTIONS - POWER AND C OMMUNICATION CABLE HEAT PUMP CONNECTIONS
The electrical connections to the heat pump may have one of two configurations, depending on the model. Please see
diagrams 9(a) or (b) for your configuration.
For configuration 1, the cables are fed through the holes at the back of the heat pump and directly inside the electrical
box through the base of the heat pump (see figure 9(a)).
For configuration 2, the cables are fed through the holes at the back of the heat pump, up through the holes in the base
of the heat pump and then from outside the electrical box through the cable glands (see figure 9(b)).
• Allow sufficient cable length to ensure the connections are not strained when the cover is opened.
• Once cables have been routed through the cable glands, close the access cover.
• Connect power cable and controller cable as shown in figure 8. Do not strip the cables before pulling them
through the glands in the access panel. Where stranded cable is being used, a ferrule must be fitted before
inserting into the push connections.
• The controller (Modbus) cable is then connected from the heat pump to the wiring centre (see wiring diagrams in
figures 5 & 6).
NOTE: E
NSURE THAT CABLE ACCESS COVERS ARE CLOSED CORRECTLY WHEN NOT IN USE .
NOTE: ‘S’ AS SHOWN IN FIGURE 8 ABOVE IS THE EARTH SHIELD AND MUST BE CONNECTED DURING INSTALLATION .
NOTE: F OLLOW STEPS IN REVERSE ORDER TO CLOSE THE HEAT PUMP . W HEN CLOSING THE HEAT PUMP FRONT
PANEL , ENSURE THAT THE TOP AND BOTTOM PANELS ARE INTERLOCKED .