York TLHA18-30OSAAAD Installation Manual page 11

To this e ect, 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 ad ustments or repairs
and repeat this procedure until the needle no longer moves.
Open the service valves and top up the refrigerant charge if necessary.
Insualation
Minimum thickness mm
(discharge)
eat pump
Li uid
Cooling
Cooling
(suction)
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 e ect, 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 pip
ing to avoid ice formation, and resulting ice build up in the fan compartment (heater strip must be at least 25 W/m).
OK
eat pump
Cooling
(suction)
eat pump
(discharge)
eat pump
Li uid
AS
Cooling
Low pressure
igh pressure
Manifold
Pressure tap
Outdoor Unit
Li uid Line
his unit is shipped complete with a charge of
will be sucient for an interconnectiong piping length of meters.
as valve
Li uid valve
Indoor Unit
as Line
R 22
refrigerant that
ENGLISH
EN