Compressor; Lubrication; Replacing Compressor; Compressor Rotation - Bryant Preferred 549K 04-06 Service And Maintenance Instructions

4 Ton 50GCQ / 549K / RHW
R410A Refrigerant Charging Chart
(Unit must run in cooling mode, on high stage
compressors & outdoor fan on high speed)
59.9 140
Add Charge if Above the Curve
120
48.8
100
37.7
26.6 80
15.5 60
4.4 40
-6.7 20
150 200 250
1034 1379 1723
Compressor Discharge Pressure, [psig/Kpa]
Fig. 22 — Cooling Charging Chart - 4 Ton
5 Ton 50GCQ / 549K / RHW
R410A Refrigerant Charging Chart
(Unit must run in cooling mode, on high stage
compressors & outdoor fan on high speed)
59.9 140
Add Charge if Above the Curve
120
48.8
37.7 100
26.6 80
15.5 60
4.4 40
-6.7 20
150 200 250
1034 1379 1723
Compressor Discharge Pressure, [psig/Kpa]
Fig. 23 — Cooling Charging Chart - 5 Ton

COMPRESSOR

Lubrication

The compressor is charged with the correct amount of oil at the
factory.
Remove Charge if Below the Curve
300 350 400 450 500 550
2068 2413 2758 3102 3447 3792
48TC003786
Remove Charge if Below the Curve
300 350 400 450 500 550
2068 2413 2758 3102 3447 3792
48TC003787
UNIT DAMAGE HAZARD
Failure to follow this caution may result in damage to com-
ponents.
The compressor is in a R-410A refrigerant system and uses
a polyolester (POE) oil. This oil is extremely hygroscopic,
meaning it absorbs water readily. POE oils can absorb
15 times as much water as other oils designed for HCFC
and CFC refrigerants. Avoid exposure of the oil to the
atmosphere.
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in death, serious
personal injury and/or property damage.
Never use air or gases containing oxygen for leak testing or
for operating refrigerant compressors. Pressurized mixtures
of air or gases containing oxygen can lead to an explosion.
600
4136
FIRE, EXPLOSION HAZARD
A
Failure to follow this warning could result in death, serious
personal injury and/or property damage.
Never use non-certified refrigerants in this product. Non-
certified refrigerants could contain contaminates that could
lead to unsafe operating conditions. Use ONLY refrigerants
that conform to AHRI Standard 700.

Replacing Compressor

NOTE: Only factory-trained service technicians should remove
and replace compressor units.
INSTALLATION SITE DAMAGE
Failure to follow this caution can result in damage to
equipment location site.
R-410A refrigerant contains polyolester (POE) oil that can
damage the roof membrane. Caution should be taken to
prevent POE oil from spilling onto the roof surface.
The factory also recommends that the suction and discharge
lines be cut with a tubing cutter instead of using a torch to
remove brazed fittings.

Compressor Rotation

600
4136
A
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution can result in premature wear
and damage to equipment.
Scroll compressors can only compress refrigerant if
rotating in the right direction. Reverse rotation for
extended times can result in internal damage to the
compressor. Scroll compressors are sealed units and
cannot be repaired on site location.
14
CAUTION
WARNING
WARNING
CAUTION
CAUTION