Unit Starting And Operating Conditions - Carrier GT-PX Split Series Installation, Operation & Maintenance Instructions Manual

Operating Limits
Environment – "Indoor" compressor section is designed for
indoor installation only. Never install "indoor" compressor
section in areas subject to freezing or where humidity levels
could cause cabinet condensation (such as unconditioned
spaces subject to 100% outside air). "Outdoor" unit is
designed for conditions where ambient air is below freezing
(see Table 11).
Power Supply – A voltage variation of +/– 10% of nameplate
utilization voltage is acceptable.
Starting Conditions
Consult Table 11 for the particular model. Starting conditions
vary depending upon model and are based upon the
following notes:
Notes:
1. Conditions in Table 11 are not normal or continuous
operating conditions. Minimum/maximum limits are
start-up conditions to bring the building space up to
occupancy temperatures. Units are not designed to
operate under these conditions on a regular basis.
Table 11: Unit Operation
Operating Limits
Air Limits
Min. ambient air, DB
Rated ambient air, DB
Max. ambient air, DB
Min. entering air, DB/WB
Rated entering air, DB/WB
Max. entering air, DB/WB
Water Limits
Min. entering water
Normal entering water
Max. entering water
Normal water fl ow

Unit Starting and Operating Conditions

GT-PX/GT-GS
Cooling
45°F [7°C]
80.6°F [27°C]
110°F [43°C]
50°F [10°C]
80.6/66.2°F [27/19°C]
110/83°F [43/28°C]
30°F [-1°C]
50-110°F [10-43°C] 30-70°F [-1 to 21°C]
120°F [49°C]
1.5 to 3.0 gpm/ton
2.0 to 3.9 l/m per kW
C a r r i e r : Tu r n t o t h e E x p e r t s
R e s i d e n t i a l S p l i t - 6 0 H z R 2 2 & R 4 1 0 A
2. Voltage utilization range complies with ARI
Standard 110.
Determination of operating limits is dependent primarily upon
three factors: 1) return air temperature. 2) water temperature,
and 3) ambient temperature. When any one of these factors
is at minimum or maximum levels, the other two factors
should be at normal levels to insure proper unit operation.
Extreme variations in temperature and humidity and/or
corrosive water or air will adversely affect unit performance,
reliability, and service life.
Heating Cooling
39°F [4°C] -10°F [-23°C]
68°F [20°C] 80.6°F [27°C]
85°F [29°C] 110°F [43°C]
40°F [4.5°C] 50°F [10°C]
68°F [20°C] 80.6/66.2°F [27/19°C]
80°F [27°C] 110/83°F [43/28°C]
20°F [-6.7°C] 30°F [-1°C]
50-110°F [10-43°C]
90°F [32°C] 120°F [49°C]
R e v. : 5 J u n e , 2 0 0 8
GT-S
Heating
-10°F [-23°C]
68°F [20°C]
85°F [29°C]
50°F [10°C]
68°F [20°C]
80°F [27°C]
20°F [-6.7°C]
30-70°F [-1 to 21°C]
90°F [32°C]
1.5 to 3.0 gpm/ton
2.0 to 3.9 l/m per kW
37