I n s t a l l a t i o n a n d u s e r m a n u a l
V e r s i o n : 0 1 / 2 0 2 1
H
E
A
T
P
U
M
P
M
I
C
R
O
W
E
L
L
H
P
Refrigerant circuit connection
Split heat pump requires refrigerant circuit connection in order to operate normally. This is normally
done during installation of the pump as the pump comes with separate (not connected) condensing
and water units refrigerant-wise originally from the factory. Refrigerant circuit must be sealed.
IMPORTANT:
Please note that refrigerant connection can be performed by an
authorized person only. The person must have a valid refrigeration licence.
Condensing unit is pre-precharged with refrigerant
for 7 meter long copper pipe connection. Above
50g/1m (HP2700) must be added to the system.
Piping length and elevation
Heat
pump
model
Pipe size
Gas
(diameter)
Liquid
(diameter)
inch
mm
inch
HP1700
5/8
15.88 3/8
HP2100
5/8
15.88 3/8
HP2700
3/4
19.05 1/2
Refrigerant piping – condensing unit
1. Align the center of the pipings and
sufficiently tighten the flare nut by hand.
Please do so for both gas and liquid pipes.
Gas pipe has bigger diameter.
Liquid pipe has smaller diameter.
2. Tighten the flare nuts with torque
wrench until the wrench clicks. Please
make sure that the direction for tightening
follows the arrow on the wrench.
Please review below table for torque force.
Water unit
Please use refrigerant copper pipes with
insulation only.
I n s t a l l a t i o n a n d u s e r m a n u a l
H P 1 7 0 0 / H P 2 1 0 0 /
Refrigerant circuit connection
Split heat pump requires refrigerant circuit connection in order to operate normally. This is normally
done during installation of the pump as the pump comes with separate (not connected) condensing
wise originally from the factory. Refrigerant circuit must be sealed.
Please note that refrigerant connection can be performed by an
authorized person only. The person must have a valid refrigeration licence.
precharged with refrigerant R32 from the factory.
meter long copper pipe connection. Above 7 meters 35g/1m (HP1700
50g/1m (HP2700) must be added to the system.
Factory pre-
charged
connection
distance
Pre -
charged
Max.
vertical
distance
(B)
Liquid
(diameter)
inch
mm
9.52
7m
1000g
15m
9.52
7m
1200g
15m
12.7
7m
2000g
15m
condensing unit
1. Align the center of the pipings and
sufficiently tighten the flare nut by hand.
Please do so for both gas and liquid pipes.
Liquid pipe has smaller diameter.
2. Tighten the flare nuts with torque
il the wrench clicks. Please
make sure that the direction for tightening
follows the arrow on the wrench.
Please review below table for torque force.
Condensing
unit
Water unit
Please use refrigerant copper pipes with
insulation only.
0 0 / 2 7 0 0 G r e e n
P a g e
3 4
/ 4 0
Split heat pump requires refrigerant circuit connection in order to operate normally. This is normally
done during installation of the pump as the pump comes with separate (not connected) condensing
wise originally from the factory. Refrigerant circuit must be sealed.
Please note that refrigerant connection can be performed by an
authorized person only. The person must have a valid refrigeration licence.
from the factory. This is sufficient
meters 35g/1m (HP1700-2100) or
Max.
distan
ce (A)
Additional
refrigerant
per 1m
above 7m
25m
35g/m
25m
35g/m
25m
50g/m
Condensing unit
Gas
side
Liquid
side
Torque
wrench
