Comfort-Aire HBH Series 6-10 Tons - Manual (Page 36)

IOM Manual HBH SERIES Heat Controller, Inc.
35
Unit Starting and Operating Conditions
Table 9a: Operating Limits
Table 9b: Commissioning 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 60/50ºF [16/10ºC] 50ºF [10ºC]
Rated entering air, DB/WB 80.6/66.2ºF [27/19ºC] 68ºF [20ºC]
Max. entering air, DB/WB 95/75ºF [35/24ºC] 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]
TCH
Starting Limits
Normal Water Flow
[1.6 to 3.2 l/m per kW]
1.5 to 3.0 gpm / ton
Rev.: 24 Sept., 2009B
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 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]
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]
TCH
Commissioning Limits
Normal Water Flow
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
Rev.: 24 Sept., 2009B
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 ensure
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 9a for operating limits.
Starting Conditions - Starting conditions are based
upon the following notes:
Notes:
1. Conditions in Table 9b 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.
HBH
HBH