PIPING EVACUATION
•
Evacuate the piping. This operation, which should last
at least 15 minutes if there are large piping lengths and
changes in elevation, should be followed by a leak test.
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
Heat pump
(discharge)
Cooling
(suction)
Heat pump
(discharge)
Heat pump
This unit is shipped complete with a charge of R-22 / R407C / R410A
refrigerant that will be sufficient for an interconnecting piping length
of 3.6 meters.
Liquid
Cooling
GAS
Cooling
(suction)
Low pressure
High pressure
Manifold
Gas valve
Liquid valve
Pressure tap
Outdoor unit
Indoor unit
Gas line
Liquid line
R-22 / R407C / R410A
11
• 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).
COLD AREA RECOMMENDATION
OK
