York Altair Series User Manual page 23

Outdoor unit installation
★ Outdoor unit refrigerant discharging method
After the pipe side connection is complete, proceed as follows.
Gas part
Loosen the
temporarily fastened
nut by half turn.
Liquid part
Loosen the Hex
wrench by half turn.
★
Vacuum Pumping Method (R410A refrigerant evacuation must use the vacuum
pumping method)
Before working on the air conditioner, remove the cover of the stop valve(gas and
liquid valves)and be sure to retighten it afterward.(to prevent the potential air leakage)
1. To prevent air leakage and spilling tighten
all connecting nut of all flare tubes.
2. Connect the stop valve, charge hose, manifold
valve, and vacuum pump.
3. Fully open the handle Lo of the manifold valve
and apply vacuum for at least 15 minutes and
check that the compound vacuum gauge reads
-0.1MPa(-76cmHg).
4. After applying vacuum, fully open the stop
valve with a hex wrench.
5. Check that both indoor and outdoor
connections are free of air leakage.
Outdoor condensation drainage(Heat pump type only)
When the unit is heating, the condensing water and defrosting
water can be out reliably through the drain house.
Installation：
Install the outdoor drain elbow in
plate, and joint the drain hose to the elbow, so that the
waste water formed in the outdoor unit can be drained
out to a proper plate.
Expelling the air
Wait for
Quickly tighten and
8 second
connect the nut.
The installing torque
is the same as that
of the gas end of
the indoor unit.
Φ
25 hole on the base
- 21 -
Fully open the
spindles of the
liquid end and of
the other two ends.
Compound meter
-76cmHg
Handle Lo
Charge hose
Stop valve Stop valve
(liquid valve) (gas valve)
Outdoor drain elbow
Check that all indoor
and outdoor
connections are free
of air leakage.
Pressure gauge
manifold valve
Handle Hi
Charge hose
Vacuum pump
Chassis