41 
11.3 Indoor Unit
11.3.1  How to Fix Installation Plate 
The mounting wall is strong and solid enough to prevent 
it from the vibration. 
 
ppropriate
Plugs (M8)
Bolt -
size M8
Washer
Wall
Wall
More than 551 More than 551
Wall
6
6
Indoor
unit
body
≥1550 from
ground
Installation
plate
1
Bolt - size M8
Installation
plate
4
00206171
745
 
 
The centre of installation plate should be at more than 
551 mm at right and left of the wall. 
The distance from installation plate edge to ground 
should more than 1550 mm. 
  Always mount the installation plate horizontally by 
aligning the marking thread and using a level gauge. 
  Mount the installation plate on the wall with 6 sets of 
plug, bolt and washer (all non-supply) with size M8. 
 
11.3.2  To Drill a Hole in the Wall and Install 
a Sleeve of Piping 
1  Insert the piping sleeve to the hole. 
2  Fix the bushing to the sleeve. 
3  Cut the sleeve until it extrudes about 15 mm 
from the wall. 
 
 CAUTION
 
When the wall is hollow, please be sure to use the sleeve for 
tube assembly to prevent dangers caused by mice biting the 
connecting cable. 
 
4  Finish by sealing the sleeve with putty or 
caulking compound at the final stage. 
 
15 mm
Putty or caulking compound
ø70 mm
through hole
Indoor
Sleeve
for tube
assembly
Approx. 5 - 7 mm
Bushing for tube
assembly
Wall
Outdoor
 
 
 
 
11.3.3  Indoor Unit Installation 
11.3.3.1  Install the Indoor Unit 
1  When connecting solar pump station cable 
between indoor unit and solar pump station, the 
distance between both apparatuses shall be 2 ~ 
8 meters and the maximum length of 10 meter 
only. Failure to do so may lead to abnormal 
operation to the system. 
2  Engage the slots on the indoor unit to the hooks 
of installation plate 
. Ensure the hooks are 
properly seated on the installation plate by 
moving it left and right. 
3  Fix the screws 
 to the holes on the hooks of 
installation plate,  , as illustrated below. 
 
Slots
Indoor unit (back)
Hooks
Wall
Installation
plate
1
Installation
plate
Screws
4
3
 
11.3.3.2  Water Piping Installation 
  The minimum requirement of water in the system is 
50 litres. If this value could not be achieved, please 
install additional buffer tank (field supply). 
  Water inlet and water outlet in indoor unit are used 
for connection to water circuit. Please request a 
licensed technician to install this water circuit. 
  This water circuit must comply with all relevant 
European and national regulations, i.e. IEC/EN 
61770. 
  Be careful not to deform the piping with excessive 
force when doing piping connection job. 
  Use Rp 1¼" nut for both water inlet and outlet 
connection and clean all pipings with tap water 
before connecting to the indoor unit. 
  Cover the pipe end to prevent dirt and dust when 
inserting it through a wall. 
  Choose proper sealer which can withstand the 
pressures and temperatures of the system. 
  If an existing tank is to be connected to this 
indoor/outdoor unit, ensure the pipes are clean 
before water pipe installation is carried out.