York RVHC 09-12DS Installation & Owner's Manual page 11

To this effect, when the piping has been evacuated, close the pressure gauge tap, note the value on the gauge,
then wait for 15 minutes. If the needle moves, there is a leak in the system. Make the necessary adjustments or
repairs and repeat this procedure until the needle no longer moves.
• Open the service valves and top up the refrigerant charge if necessary.
Insulation
Minimum thickness 6 mm
Heat pump
Liquid
Cooling
COLD AREA RECOMMENDATION
• Outdoor heat pump unit : install the unit at least 10 cm above ground level to facilitate drainage of defrost water
and prevent accumulation of ice. In effect, defrost water can cause accumulation of ice under the unit during
subfreezing outdoor temperatures.
• In areas with heavy snowfall it is best to install the unit on wall supports.
• In some regions, it is necessary to heat the bottom of the condensate drainage pan and the condensate drainage
piping to avoid ice formation, and resulting ice build-up in the fan compartment (heater strip must be at least
25 w/m).
OK
J355-EN.indd 11 J355-EN.indd 11
Heat pump
(discharge)
Cooling
(suction)
Heat pump
(discharge)
Heat pump
GAS
Liquid
Cooling
Cooling
(suction)
Low pressure
High pressure
Manifold
Liquid valve
Pressure tap
Outdoor unit
Gas line
Liquid line
R-410A
This unit is shipped complete with a charge of R-410A refrigerant
that will be suffi cient for an interconnecting piping length of 7.5
meters.
Gas valve
Indoor unit
EN
11
ENGLISH
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