B-Refrigerant Charge and Check - Fin/Tube Coil
any condition.
This unit is factory charged and should require no further
nameplate charge.
NOTE - System charging is not recommended below 60°F
(15°C). In temperatures below 60°F (15°C) , the charge
must be weighed into the system.
IMPORTANT - Charge unit in standard cooling mode.
1 - Attach gauge manifolds and operate unit in cool-
ing mode with economizer disabled until system
outdoor air dampers are closed.
2 - Check each system separately with all stages
operating.
3 - Use a thermometer to accurately measure the out-
door ambient temperature.
4 - Apply the outdoor temperature to TABLE 14 to
TABLE 17 to determine normal operating pressures.
Pressures are listed for sea level applications at
Compare the normal operating pressures to the
pressures obtained from the gauges. Minor varia-
tions in these pressures may be expected due to
could mean that the system is not properly charged
or that a problem exists with some component in
the system. Correct any system problems before
proceeding.
6 -
refrigerant to the system.
• Add or remove charge in increments.
• Allow the system to stabilize each time refriger-
ant is added or removed.
7 - Use the following approach method along with the
TABLE 14 581129-01
KGC/KCC092S Fin/Tube - W & W/O Reheat
Outdoor
Coil
Entering
Air Temp
CIRCUIT 1 CIRCUIT 2
Discharge
+ 10 psig
Suction +
5 psig
Discharge
+ 10 psig
Suction +
5 psig
270 128 140
310 131 146
133 338
401 136 388
140 433 160
488 162
TABLE 15 581130-01
KGC/KCC102S Fin/Tube - W & W/O Reheat
Outdoor
Coil
Entering
Air Temp
CIRCUIT 1 CIRCUIT 2
Discharge
+ 10 psig
Suction +
5 psig
Discharge
+ 10 psig
Suction +
5 psig
269 128 276 138
308 132 314 142
146
396 139 407 149
447 141
146
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