Johnson Controls YVAHP0721CW Series, Service Manual

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SM-16007
1-63
INSTALLATION
< Max. Additional Refrigerant Charge Quantity Allowed >
Outdoor Unit Capacity (x 1,000 Btu/h) 72, 96 144 - 192 288
Max. Additional Ref. Charge Quantity (lbs) 61.7 112.5 138.9
< Initial Ref. Charge Amount of O.U. (Before Shipment) (W0 lbs) >
Outdoor Unit Capacity (x 1,000 Btu/h) 72, 96
W0 Outdoor Unit Ref. Charge (lbs) 17.0
NOTE:
W0 is the outdoor unit refrigerant charge prior to shipment.
If there is a combination of base units, calculate the total refrigerant charge prior to shipment of those combined
outdoor units.
(2) Record of Additional Charge
Total refrigerant charge of this system is calculated in the following formula.
Total Ref. Charge = WT lbs + W0 lbs = lbs
NOTE:
When refrigerant is recovered or charged due to repairs, operating, or adjusting the unit, record the
refrigerant quantity again.
NOTICE
1.
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.
2.
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8.5 Automatic Simple Judgment System for Refrigerant Amount
1. This function is applicable when outdoor air temperature is 32 to 109
o
F DB (0 to 43
o
C DB) and indoor air
temperature is 50 to 90
o
F DB (10 to 32
o
C DB).
2. An operation check or condition check shall be performed by checking the PCB1 for the outdoor unit. During
the checking, do not remove the front cover. Otherwise, the checking will not be conducted normally due
to pressure increase. For combination outdoor unit, the inspection shall be conducted at Unit A.
Service covers for Unit B, or C must be closed.
NOTE