Checks And Connection; Checking The Liquid Connection (Small Diameter); Checking The Gas Connection (Large Diameter); Tightening Torques - Fujitsu Waterstage WOYG160LJL Installation Manual
Air to water heat pump split single service, refrigerant r410a inverter, outdoor/hydraulic unit
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- Design & technical manual (121 pages) ,
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Checks and connection
The refrigeration 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 refrigeration
connectors.
Indicated blowing value: 6 bar for minimum
30 seconds for connection of 20 m.
Checking the gas connection (large diameter).
Connect the gas connection to the outdoor unit.
Blow dry nitrogen into the gas connection and inspect
its end:
- If water or impurities emerge, use a brand new
refrigeration connection.
Otherwise, proceed with flaring and connect the
refrigeration connection to the outdoor unit immediately.
Checking the liquid connection (small diameter).
Connect the liquid connection to the hydraulic unit.
Blow
nitrogen
into
connection system and inspect its end (outdoor unit side).
- If water or impurities emerge, use a brand new
refrigeration connection.
- Otherwise, proceed with flaring and connect the
refrigeration connection to the outdoor unit immediately.
Take particular care to position the tube
opposite its connector so as not to risk
damaging the threads. A properly aligned
connector can be attached easily by hand
without much force being required.
- 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.
Waterstage / Installation / 2011 - EN
gas-condenser-liquid
the
OU
UE
1
Azote
Nitrogen
UE
OU
2
Azote
Nitrogen
UE
3
OU
Azote
Nitrogen
fig. 21 - Checking refrigeration connections
Holding spanner
Torque wrench
Designation
Flared nut 9.52 mm (3/8")
Flared nut 15.88 mm (5/8")
Plug (A) 3/8"
Plug (A) 5/8"
Plug (B) 3/8", 5/8"
Plug (A) and (B) : see
fig. 22, page
fig. 20 - Tightening torques
Gas
Liaison
connection
gaz
MH*
HIU
Liaison
Gas
gaz
connection
Liaison
Liquid
connection
liquide
MH*
HIU
gaz
Gas
Tightening torque
32 to 42 Nm
63 to 77 Nm
20 to 25 Nm
30 to 35 Nm
10 to 12 Nm
27.
- 25 -
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