Unit Commissioning And Operating Conditions - Heat Controller HEV Series Installation, Operation & Maintenance Manual

Installation, Operation & Maintenance

UNIT COMMISSIONING AND OPERATING CONDITIONS

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 – Voltage utilization shall comply with AHRI standard 110, voltage range A.
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 9a for operating limits.
Table 9a: Building Operating Limits
Operating Limits
Air Limits
Min. ambient air, DB
Rated ambient air, DB 80.6ºF [27ºC]
Max. ambient air, DB 130ºF [43ºC]
Min. entering air, DB/WB 65/45ºF [16/7ºC]
70/50ºF Reheat
Rated entering air, DB/WB 80.6/66.2ºF [27/19ºC]
Max. entering air, DB/WB 100/75ºF [38/24ºC]
Water Limits
Min. entering water 30ºF [-1ºC]
Normal entering water 50-110ºF [10-43ºC]
Max. entering water 120ºF [49ºC]
Normal Water Flow
Commissioning Conditions
Consult Table 9b for commissioning conditions. Starting conditions vary depending upon model and 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 complies with AHRI Standard 110, voltage range B.
Table 9b: Building Commissioning Limits
Commissioning 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 80.6/66.2ºF [27/19ºC]
Max. entering air, DB/WB 110/83ºF [43/28ºC]
Water Limits
Min. entering water
Normal entering water 50-110ºF [10-43ºC]
Max. entering water
Normal Water Flow
Unit
Cooling Heating
45ºF [7ºC] 39ºF [4ºC]
68ºF [20ºC]
85ºF [29ºC]
50ºF [4.4ºC]
68ºF [20ºC]
80ºF [27ºC]
20ºF [-6.7ºC]
30-70ºF [-1 to 21ºC]
90ºF [32ºC]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
Rev.: 16 Nov., 2011
Unit
Cooling Heating
45ºF [7ºC] 39ºF [4ºC]
80.6ºF [27ºC] 68ºF [20ºC]
130ºF [43ºC] 85ºF [29ºC]
60ºF [10ºC] 40ºF [4.5ºC]
68ºF [20ºC]
80ºF [27ºC]
30ºF [-1ºC] 20ºF [-6.7ºC]
30-70ºF [-1 to 21ºC]
120ºF [49ºC] 90ºF [32ºC]
1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
Rev.: 16 Nov., 2011
HEV/H SERIES
34
Heat Controller, Inc.