Tranquility THW - 50 & 60Hz R410A - ClimateMaster Geothermal Heat Pumps - Rev.: 30 June, 2008B
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UNIT STARTING & OPERATING CONDITIONS
Operating Limits
Environment
– This unit is designed for indoor
installation only.
Power Supply
– A voltage variation of +/– 10% of
nameplate utilization voltage is acceptable.
Starting Conditions
THW Units – Units start and operate in an ambient of
45°F [7.2°C] with entering Load Water at 50°F [10°C],
entering Source Water at 30°F [-1.1°C] and both Load
and Source Water at the stated flow rates of 3 gpm per
ton for initial winter start-up.
Notes:
1. These are not normal or continuous operating
conditions. It is assumed that winter start-up is to bring
the building space up to occupancy temperatures.
2. Voltage utilization range complies with ARI
Standard 110.
Determination of operating limits is dependent primarily
upon three factors: 1) entering load temperature. 2)
entering source 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
corrosive water will adversely affect unit performance,
reliability, and service life.
Table 7: Operating Limits
Source Side Water Limits
Heating
Minimum Entering Water
20°F [-6.6°C]
Normal Entering Water
60°F [15.6°C]
Maximum Entering Water
90°F [32.2°C]
Load Side Water Limits
Minimum Entering Water
60°F [15.6°C]
Normal Entering Water
100°F [37.8°C]
Maximum Entering Water
140°F [60.0°C]
