Comfort-Aire HBH Series 1/2 to 5 Ton - Manual (Page 30)

Cooling Heating
Air Limits
Min. ambient air , DB 45ºF [7ºC] 39ºF [4ºC]
Rated ambient air , DB 80.6ºF [27ºC] 68ºF [20ºC]
Max. ambient air , D B 110ºF [43ºC] 85ºF [29ºC]
Min. entering air , DB/WB *50/45ºF [10/7ºC] 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]
Wa ter 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]
TT/TS/TR/TC
Commissioning Limits
Normal W ater Flo w
1.5 to 3.0 gpm / to n
[1.6 to 3.2 l/m per kW ]
*If with active ClimaDry 70/61ºF (21/16ºC)
Rev.: 23 July, 2009B
IOM Instructions HBH/V COMPACT Heat Controller, Inc.
UNIT STARTING AND OPERATING CONDITIONS
Table 6a: Operating Limits
Operating Limits
Environment – Units are designed for indoor installation only. Never install units 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.
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 Table 6a for
operating limits.
Cooling Heating Cooling Heating Cooling Heating
Air Limits
Min. ambient air, DB 45ºF [7ºC] 39ºF [4ºC] 45ºF [7ºC] 39ºF [4ºC] 45ºF [7ºC] 39ºF [4ºC]
Rated ambient air, DB 80.6ºF [27ºC] 68ºF [20ºC] 80.6ºF [27ºC] 68ºF [20ºC] 80.6ºF [27ºC] 68ºF [20ºC]
Max. ambient air, DB 110ºF [43ºC] 85ºF [29ºC] 110ºF [43ºC] 85ºF [29ºC] 110ºF [43ºC] 85ºF [29ºC]
Min. entering air, DB/WB 60/45ºF [16/7ºC] 40ºF [4.4ºC] 60/50ºF [16/10ºC] 45ºF [7ºC] 65/50ºF [18/10ºC] 45ºF [7.2ºC]
Rated entering air, DB/WB 80.6/66.2ºF [27/19ºC] 68ºF [20ºC] 80.6/66.2ºF [27/19ºC] 68ºF [20ºC] 80.6/66.2ºF [27/19ºC] 68ºF [20ºC]
Max. entering air, DB/WB 100/75ºF [38/24ºC] 80ºF [27ºC] 95/75ºF [35/24ºC] 80ºF [27ºC] 95/75ºF [35/24ºC] 80ºF [27ºC]
Water Limits
Min. entering water 30ºF [-1ºC] 20ºF [-6.7ºC] 30ºF [-1ºC] 20ºF [-6.7ºC] 30ºF [-1ºC] 20ºF [-6.7ºC]
Normal entering water 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC] 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC] 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC]
Max. entering water 120ºF [49ºC] 90ºF [32ºC] 120ºF [49ºC] 90ºF [32ºC] 120ºF [49ºC] 90ºF [32ºC]
TC TS TT
Starting Limits
Normal Water Flow
[1.6 to 3.2 l/m per kW]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
1.5 to 3.0 gpm / ton
Rev.: 23 Jan., 2009B
Cooling Heating Cooling Heating Cooling Heating
Air Limits
Min. ambient air, DB 45ºF [7ºC] 39ºF [4ºC] 45ºF [7ºC] 39ºF [4ºC] 45ºF [7ºC] 39ºF [4ºC]
Rated ambient air, DB 80.6ºF [27ºC] 68ºF [20ºC] 80.6ºF [27ºC] 68ºF [20ºC] 80.6ºF [27ºC] 68ºF [20ºC]
Max. ambient air, DB 110ºF [43ºC] 85ºF [29ºC] 110ºF [43ºC] 85ºF [29ºC] 110ºF [43ºC] 85ºF [29ºC]
Min. entering air, DB/WB 70/60ºF [21/16ºC] 60ºF [15.6ºC] 70/60ºF [21/16ºC] 60ºF [16ºC] 70/60ºF [21/16ºC] 60ºF [16ºC]
Rated entering air, DB/WB 80.6/66.2ºF [27/19ºC] 68ºF [20ºC] 80.6/66.2ºF [27/19ºC] 68ºF [20ºC] 80.6/66.2ºF [27/19ºC] 68ºF [20ºC]
Max. entering air, DB/WB 95/75ºF [35/24ºC] 80ºF [27ºC] 95/75ºF [35/24ºC] 80ºF [27ºC] 95/75ºF [35/24ºC] 80ºF [27ºC]
Water Limits
Min. entering water 30ºF [-1ºC] 20ºF [-7ºC] 30ºF [-1ºC] 20ºF [-7ºC] 50ºF [10ºC] 50ºF [10ºC]
Normal entering water 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC] 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC] 60-90ºF [15 to 32ºC] 60-70ºF [15 to 21ºC]
Max. entering water 120ºF [49ºC] 90ºF [32ºC] 120ºF [49ºC] 90ºF [32ºC] 110ºF [43ºC] 90ºF [32ºC]
TC GR GS
Starting Limits
Normal Water Flow
[2.7 to 3.2 l/m per kW]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
2.5 to 3.0 gpm / ton
Operating
Cooling Heating Cooling Heating Cooling Heating
Air Limits
Min. ambient air, DB 45ºF [7ºC] 39ºF [4ºC] 45ºF [7ºC] 39ºF [4ºC] 45ºF [7ºC] 39ºF [4ºC]
Rated ambient air, DB 80.6ºF [27ºC] 68ºF [20ºC] 80.6ºF [27ºC] 68ºF [20ºC] 80.6ºF [27ºC] 68ºF [20ºC]
Max. ambient air, DB 110ºF [43ºC] 85ºF [29ºC] 110ºF [43ºC] 85ºF [29ºC] 110ºF [43ºC] 85ºF [29ºC]
Min. entering air, DB/WB 60/45ºF [16/7ºC] 40ºF [4.4ºC] 60/50ºF [16/10ºC] 45ºF [7ºC] 65/50ºF [18/10ºC] 45ºF [7.2ºC]
Rated entering air, DB/WB 80.6/66.2ºF [27/19ºC] 68ºF [20ºC] 80.6/66.2ºF [27/19ºC] 68ºF [20ºC] 80.6/66.2ºF [27/19ºC] 68ºF [20ºC]
Max. entering air, DB/WB 100/75ºF [38/24ºC] 80ºF [27ºC] 95/75ºF [35/24ºC] 80ºF [27ºC] 95/75ºF [35/24ºC] 80ºF [27ºC]
Water Limits
Min. entering water 30ºF [-1ºC] 20ºF [-6.7ºC] 30ºF [-1ºC] 20ºF [-6.7ºC] 30ºF [-1ºC] 20ºF [-6.7ºC]
Normal entering water 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC] 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC] 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC]
Max. entering water 120ºF [49ºC] 90ºF [32ºC] 120ºF [49ºC] 90ºF [32ºC] 120ºF [49ºC] 90ºF [32ºC]
TC TS TT
Starting Limits
Normal Water Flow
[1.6 to 3.2 l/m per kW]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
1.5 to 3.0 gpm / ton
Rev.: 23 Jan., 2009B
Cooling Heating Cooling Heating Cooling Heating
Air Limits
Min. ambient air, DB 45ºF [7ºC] 39ºF [4ºC] 45ºF [7ºC] 39ºF [4ºC] 45ºF [7ºC] 39ºF [4ºC]
Rated ambient air, DB 80.6ºF [27ºC] 68ºF [20ºC] 80.6ºF [27ºC] 68ºF [20ºC] 80.6ºF [27ºC] 68ºF [20ºC]
Max. ambient air, DB 110ºF [43ºC] 85ºF [29ºC] 110ºF [43ºC] 85ºF [29ºC] 110ºF [43ºC] 85ºF [29ºC]
Min. entering air, DB/WB 70/60ºF [21/16ºC] 60ºF [15.6ºC] 70/60ºF [21/16ºC] 60ºF [16ºC] 70/60ºF [21/16ºC] 60ºF [16ºC]
Rated entering air, DB/WB 80.6/66.2ºF [27/19ºC] 68ºF [20ºC] 80.6/66.2ºF [27/19ºC] 68ºF [20ºC] 80.6/66.2ºF [27/19ºC] 68ºF [20ºC]
Max. entering air, DB/WB 95/75ºF [35/24ºC] 80ºF [27ºC] 95/75ºF [35/24ºC] 80ºF [27ºC] 95/75ºF [35/24ºC] 80ºF [27ºC]
Water Limits
Min. entering water 30ºF [-1ºC] 20ºF [-7ºC] 30ºF [-1ºC] 20ºF [-7ºC] 50ºF [10ºC] 50ºF [10ºC]
Normal entering water 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC] 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC] 60-90ºF [15 to 32ºC] 60-70ºF [15 to 21ºC]
Max. entering water 120ºF [49ºC] 90ºF [32ºC] 120ºF [49ºC] 90ºF [32ºC] 110ºF [43ºC] 90ºF [32ºC]
TC GR GS
Starting Limits
Normal Water Flow
[2.7 to 3.2 l/m per kW]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
2.5 to 3.0 gpm / ton
HB
Starting Conditions
Starting conditions are based upon the following notes:
Notes:
1. Conditions in Table 6b 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 6b: Starting Limits
HB
Normal Water Flow