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3 .3
Check and connecting
"
The refrigerant circuit is very sensitive
to dust and humidity: check that the area
around the connection is clean and dry before
removing the plugs protecting the refrigerant
connectors .
"
Indicative blowing value: 6 bar during 30
seconds minimum for connection of 20 m .
"Gas" connection control (large diameter)
.
Connect the "Gas" connection to the outdoor unit.
Blow dry nitrogen into the "Gas" connection and observe
this end:
- If water or impurities emerge, use a new refrigerant
connection.
Otherwise, perform the flare and connect immediately
the refrigerant connection to the hydraulic unit.
"Liquid" connection control (small diameter)
.
Connect the "Liquid" connection to the outdoor unit.
Blow dry nitrogen into
"Gas" connection – condensor
- "Liquid" connection
assembly and Observe this end
(Outdoor unit side).
- If water or impurities emerge, use a new refrigerant
connection.
- Otherwise, perform the flare and connect immediately
the refrigerant connection to the outdoor unit.
Remarks :
"
Take particular care positioning the tube opposite
its connector so as not to risk damaging the
threads. A carefully aligned connector can be fitted
easily by hand without much force being required.
- Depending on the case, connect an adapter (reducer)
1/4''- 3/8'' or 1/2''- 5/8''.
- Remove the plugs from the pipes and the refrigeration
connections.
-
Warning !
Avoid positioning the Gas pipe in front of
the pump.
- Comply with the indicated tightening torques
(see
figure 19 -
Tightening torque
Designation
Tightening torque
Flare nut 6,35 mm (1/4")
14 to 18 Nm
Flare nut 9,52 mm (3/8")
33 to 42 Nm
Flare nut 12,7 mm (1/2")
50 to 62 Nm
Flare nut 15,88 mm (5/8")
63 to 77 Nm
Plug (A) 3/8", 1/4"
20 to 25 Nm
Plug (A) 1/2"
25 to 30 Nm
Plug (A) 5/8"
30 to 35 Nm
Plug (B) 3/8", 5/8"
10 to 12 Nm
Plug (B) 1/2", 1/4"
12,5 to 16 Nm
Holding wrench
Torque wrench
figure 20 -
Refrigerant connections check
Nitrogen
Nitrogen
Nitrogen
"Gas"
connection
"Gas"
connection
"Gas"
"Liquid"
connection
Installation and operation manual "1764 - EN"
Air to Water Heat Pump, split system
- 22 -
Содержание WOYA060LFCA
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Страница 87: ...Installation and operation manual 1764 EN 87 Air to Water Heat Pump split system ...
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Страница 89: ...Installation and operation manual 1764 EN 89 Air to Water Heat Pump split system ...
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