Section 6: Electrical Page 27
6.6 Solar Thermal
It may be part of the system design to incorporate solar thermal.
This is easily done with the use of an additional two-pole relay.
This can, of course be added to both monovalent and bivalent systems. It
is much easier to carry out all these types of systems based on S-plan type
controls only.
6.7 Connection of Heating System Controls
For information relating to the connection of the heating system controls, refer
to Figures 6-8 or 6-9.
6.8 Connection of Display Pad
For information relating to the connection of the display pad, refer to Section
7.
6.5 Tightening Torques
Tightening torques
M4 screw 1.2 to 1.8 N m (12 to 18 kgf cm)
M5 screw 2.0 to 3.0 N m (20 to 30 kgf cm)
It is important that the cable is stripped back
10mm.
If shorter, it is possible to clamp down onto the
insulation.
If longer, a short circuit may occur.
CAUTION
WARNING
When using crimp type terminals, tighten the
terminal screws to the specified torques, other-
wise, overheating may occur and possibly cause
extensive damage inside the heat pump.
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