Association with an out
door unit
Indoor module gas line fitting
Indoor module fluid line fitting
B1: 27 kW for 1"
3/4" <=> 3/4" to 1" adapter braze-on type from
the accessories bag
Discard the original 3/4" nut
1/2" <=> Original 1/2" nut
Remove and discard the cap
B2: 27 kW for 3/4"
3/4" <=> Original 3/4" nut
Remove and discard the cap
1/2" <=> Original 1/2" nut
Remove and discard the cap
1. Check the exchanger leak-tightness: partially unscrew the "gas" nut.
A release noise should be heard, which is proof that the exchanger
is watertight.
2. Undo the nuts on the indoor module.
3. Fit the connections as shown in the above table, using the copper
seals for the adapters and adhering to the torque load.
Tab.17 Torque load to be applied
External diameter of
the pipe (mm/inch)
External diameter of
the cone fitting (mm)
Torque load (N.m)
6.35 - 1/4
17
14 - 18
9.52 - 3/8
22
34 - 42
12.7 - 1/2
26
49 - 61
15.88 - 5/8
29
69 - 82
19.05 - 3/4
36
100 - 120
4. Bead the pipes.
5. Connect the pipes and tighten the nuts, adhering to the torque load
and applying refrigerant oil to the beaded parts to facilitate tightening
and improve leak-tightness.
Caution
For the AWHP 22 TR–2 and AWHP 27 TR-2 models
Do not overheat the pipe, protect the insulation and the indoor
module when brazing.
Use hard solder.
Using the 1" braze-on gas pipe:
Braze the 1" gas pipe onto the braze-on adapter, circulating
dehydrated nitrogen inside the pipe to prevent oxidation.
Using the 3/4" crown gas pipe:
Slip the nut onto the pipe. Bead the pipes.
Fig.26
MW-1001208-1
OK
Pfffff...
1
6 Installation
30
iHPI
7701563 - v02 - 22052018