Heat Controller HTV Series - Unit and System Checkout; UNIT CHECKOUT; SYSTEM CHECKOUT

Heat Controller, Inc. HTV/HTD/HTH SERIES
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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 8a for operating
limits.
Commissioning Conditions
Consult Table 8b for the particular model. Starting conditions vary depending upon model and are based upon the
following notes:
Notes:
1. Conditions in Table 8b 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 8a: Building 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 *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]
TT/TS
Commissioning Limits
Normal Water Flow
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
Rev.: 8 June, 2009P*If with active ClimaDry™ 70/61℉ (21/16℃)
Table 8b: Building Commissioning Limits
Cooling HeatingCooling Heating
Air Limits
Min. ambient air, DB 45ºF [7ºC] 39ºF [4ºC]45ºF [7ºC] 39ºF [4ºC
Rated ambient air, DB80.6ºF [27ºC] 68ºF [20ºC]80.6ºF [27ºC] 68ºF [20ºC
Max. ambient air, DB110ºF [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]
Rated entering air, DB/WB 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]
Water Limits
Min. entering water 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]
Max. entering water 120ºF [49ºC] 90ºF [32ºC] 120ºF [49ºC] 90ºF [32ºC]
TSTT
Operating Limits
Normal Water Flow
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]
Rev.: 8 June, 2009P
Unit Commissioning And Operating Conditions
HTV/HTD/HTH
HTV/HTD/HTH