Daikin ERHQ006BAV3, Installation Manual

Page: 9 / 14

ERHQ006~0 ERLQ006~008BAV3
Outdoor unit for air to water heat pump
4PW54246-1A
Installation manual
7
■
All refrigerant pipe joints should be tightened with a torque
wrench at the specified tightening torque. See
"Connecting the
refrigerant piping to the outdoor unit" on page 6 for details.
1 Connect the projection side (on which the worm pin is pressed)
of the charging hose coming from the gauge manifold to the gas
stop valve's service port.
2 Fully open the gauge manifold's low-pressure valve (Lo) and
completely close its high-pressure valve (Hi).
The high-pressure valve subsequently requires no operation.
3 Apply vacuum pumping. Check that the compound pressure
gauge reads –0.1 MPa (–760 mm Hg).
4 Close the gauge manifold's low-pressure valve (Lo) and stop the
vacuum pump.
Leave as is for 4-5 minutes and make sure that the coupling
meter needle does not go back.
5 Remove the covers from the liquid stop valve and gas stop
valve.
6 Turn the liquid stop valve's rod 90 degrees counterclockwise
with a hexagonal wrench to open the valve.
Close it after 5 seconds, and check for gas leakage.
Using soapy water, check for gas leakage from the indoor unit's
flare and the outdoor unit's flare and the valve rods.
After the check is complete, wipe all soapy water off.
7 Disconnect the charging hose from the gas stop valve's service
port, then fully open the liquid and gas stop valves.
Do not attempt to turn the valve rod beyond its stop.
8 Tighten the valve lids and service port caps for the liquid and
gas stop valves with a torque wrench at the specified torques.
See
"Connecting the refrigerant piping to the outdoor unit" on
page 6 for details.
Charging refrigerant
This outdoor unit is factory charged.
Important information regarding the refrigerant used
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.
Refrigerant type: R410A
GWP
(1)
value: 1975
(1)
GWP = global warming potential
Please fill in with indelible ink,
■ ➀
the factory refrigerant charge of the product,
■ ➁
the additional refrigerant amount charged in the field and
■ ➀
+
➁
the total refrigerant charge
on the fluorinated greenhouse gases label supplied with the product.
The filled out label must be adhered on the inside of the product and
in the proximity of the product charging port (e.g. on the inside of the
service cover).
To avoid compressor breakdown. Do not charge the refrigerant
more than the specified amount.
This outdoor unit is factory charged with refrigerant and depending
on pipe sizes and pipe lengths some systems require additional
charging of refrigerant.
Re-charging
In case re-charging is required, refer to the nameplate of the unit. The
nameplate states the type of refrigerant and necessary amount.
Pipe length
≤
15 m >15 m
Run time
≥
10 minutes
≥
15 minutes
NOTE If the meter needle does go back, this may
indicate presence of moisture or leaking from
connecting parts. Repeat steps
2 through 4 after
checking all connecting parts and slightly
loosening and retightening the nuts.
1 4
10
2
6
5
3
7 8 9
8
1 Pressure meter
2 Gauge manifold
3 Low-pressure valve
(Lo)
4 High-pressure valve
(Hi)
5 Charging hoses
6 Vacuum pump
7 Service port
8 Valve lids
9 Gas stop valve
10 Liquid stop valve
NOTE National implementation of EU regulation on certain
fluorinated greenhouse gases may require to provide
the appropriate official national language on the unit.
Therefore, an additional multilingual fluorinated
greenhouse gases label is supplied with the unit.
Sticking instructions are illustrated on the backside of
that label.
3
5 6
2
1
4
1 Factory refrigerant
charge of the product:
see unit name plate
2 Additional refrigerant
amount charged in the
field
3 Total refrigerant charge
4 Contains fluorinated
greenhouse gases
covered by the Kyoto
Protocol
5 Outdoor unit
6 Refrigerant cylinder and
manifold for charging