Copyright 2013 HotSpot Energy
CONNECT THE CABLE TO THE OUTDOOR UNIT
1. Remove the electrical control board cover from the outdoor unit by loosening the screw. See figure 17.
2. Connect the connective cables to the terminals as identified with their respective matched numbers on
the terminal block of indoor and outdoor units. See figure 18.
3. Secure the cable onto the control board with the plastic cable clamp.
4. To prevent the ingress of water, form a loop of the connective cable as illustrated in the installation
diagram of indoor and outdoor units.
5. Insulate unused cords (conductors) with PVC-tape so they do not touch any electrical or metal parts.
Figure 17
Figure 18
AIR PURGING AND TEST OPERATION
Note:
Line set pipe length will affect the capacity and energy efficiency of the unit. The nominal efficiency is
tested basing on the pipe length of 7.5 meters.
Air purging
Air and moisture in the refrigerant system have undesirable effects and can damage the system. Therefore,
the indoor unit and tubing between the indoor and outdoor unit must be leak tested and evacuated to
remove any non-condensables and moisture from the system.
Check that each tube (both liquid and gas side tubes) between the indoor and outdoor units have been
properly connected and all wiring for the test run has been completed. Make sure to properly evacuate the
system using a vacuum pump.
Pipe length and refrigerant amount:
Figure 19
14
Connective
pipe
length
Air
purging
method
Additional amount of refrigerant to be charged
Less than 7.5m
Use vacuum pump
-------------
More than 7.5m
Use vacuum pump
Liquid side:6.35mm R410A:
(Pipe length-7.5)x20g/m
Liquid side:|9.52mm:
R410A: (Pipe length-7.5)x40g/m
Outdoor unit connects to 48v DC Power only.
Use cable AWG sized per distance calculations (see page 11.)
48v DC ONLY
DO NOT CONNECT
AC POWER
TO THIS SYSTEM
