Unit Starting and Operating Conditions
Commissioning Limits
Consult Table 13b for the particular model. Starting conditions vary depending upon model and are based upon the following
notes:
Notes:
1.
Commissioning limits in Table 13b 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.
2. Voltage utilization range complies with AHRI Standard 110.
Table 13a: Building Operating Limits
41
R e s i d e n t i a l S p l i t U n i t s - 6 0 H z P u r o n
®
R e v. : 6 D e c . , 2 0 1 1
Operating Limits
Environment – GT-PX units are designed for indoor installation only. Never install in areas subject to freezing or where humidity
levels could cause cabinet condensation (such as unconditioned spaces subject to 100% outside air). Power Supply – A voltage
variation of +/– 10% of nameplate utilization voltage is acceptable. GT-PE units are designed for conditions where ambient air
is below freezing.
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. Consult 11a for operating limits.
Operating Limits
Environment – GT-PX units are designed for indoor installation only. Never install in areas subject to freezing or where humidity
levels could cause cabinet condensation (such as unconditioned spaces subject to 100% outside air). Power Supply – A voltage
variation of +/– 10% of nameplate utilization voltage is acceptable. GT-PE units are designed for conditions where ambient air
is below freezing.
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. Consult 11a for operating limits.
Cooling
Heating
Air Limits
Min. ambient air, DB
45ºF [7ºC]
39ºF [4ºC]
Rated ambient air, DB
80.6ºF [27ºC]
68ºF [20ºC]
Max. ambient air, DB
110ºF [43ºC]
85ºF [29ºC]
Min. entering air, DB/WB
60/45ºF [16/7ºC]
40ºF [4.4ºC]
Rated entering air, DB/WB
80.6/66.2ºF [27/19ºC]
68ºF [20ºC]
Max. entering air, DB/WB
100/75ºF [38/24ºC]
80ºF [27ºC]
Water Limits
Min. entering water
30ºF [-1ºC]
20ºF [-6.7ºC]
Normal entering water
50-110ºF [10-43ºC]
30-70ºF [-1 to 21ºC]
Max. entering water
120ºF [49ºC]
90ºF [32ºC]
TTS
Operating Limits
Normal Water Flow
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
Rev.: 9 June, 2009P
Cooling
Heating
Air Limits
Min. ambient air, DB
-10ºF [-23ºC]
-10ºF [-23ºC]
Rated ambient air, DB
80.6ºF [27ºC]
68ºF [20ºC]
Max. ambient air, DB
110ºF [43ºC]
85ºF [29ºC]
Min. entering air, DB/WB
60/45ºF [16/7ºC]
40ºF [4.4ºC]
Rated entering air, DB/WB
80.6/66.2ºF [27/19ºC]
68ºF [20ºC]
Max. entering air, DB/WB
100/75ºF [38/24ºC]
80ºF [27ºC]
Water Limits
Min. entering water
30ºF [-1ºC]
20ºF [-6.7ºC]
Normal entering water
50-110ºF [10-43ºC]
30-70ºF [-1 to 21ºC]
Max. entering water
120ºF [49ºC]
90ºF [32ºC]
TTP
Operating Limits
Normal Water Flow
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
Created: 23 June, 2009B
GT-PX
GT-PE
Cooling
Heating
Air Limits
Min. ambient air, DB
45ºF [7ºC]
39ºF [4ºC]
Rated ambient air, DB
80.6ºF [27ºC]
68ºF [20ºC]
Max. ambient air, DB
110ºF [43ºC]
85ºF [29ºC]
Min. entering air, DB/WB
50ºF [10ºC]
40ºF [4.5ºC]
Rated entering air, DB/WB
80.6/66.2ºF [27/19ºC]
68ºF [20ºC]
Max. entering air, DB/WB
110/83ºF [43/28ºC]
80ºF [27ºC]
Water Limits
Min. entering water
30ºF [-1ºC]
20ºF [-6.7ºC]
Normal entering water
50-110ºF [10-43ºC]
30-70ºF [-1 to 21ºC]
Max. entering water
120ºF [49ºC]
90ºF [32ºC]
TTS
Commissioning Limits
Normal Water Flow
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
Rev.: 9 June, 2009P
Table 11b: Building Commissioning Limits
Cooling
Heating
Air Limits
Min. ambient air, DB
-10ºF [-23ºC]
-10ºF [-23ºC]
Rated ambient air, DB
80.6ºF [27ºC]
68ºF [20ºC]
Max. ambient air, DB
110ºF [43ºC]
85ºF [29ºC]
Min. entering air, DB/WB
50ºF [10ºC]
40ºF [4.5ºC]
Rated entering air, DB/WB
80.6/66.2ºF [27/19ºC]
68ºF [20ºC]
Max. entering air, DB/WB
110/83ºF [43/28ºC]
80ºF [27ºC]
Water Limits
Min. entering water
30ºF [-1ºC]
20ºF [-6.7ºC]
Normal entering water
50-110ºF [10-43ºC]
30-70ºF [-1 to 21ºC]
Max. entering water
120ºF [49ºC]
90ºF [32ºC]
TTP
Commissioning Limits
Normal Water Flow
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
Created: 23 June, 2009B
GT-PX
GT-PE
