Specifications

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Operating Limits
Typical Water Source Heat Pump Common Design Temperatures
Operating
Mode
Entering Air °F Entering Water °F
Minimum Maximum Standard Range Extended Range
DB WB DB WB Minimum Maximum Minimum Maximum
Cooling 75 63 80 67 85 100 85 100
Heating 60 – 70 – 60 70 40 70
Water Source Heat Pump Operating Temperature Limits (For Continuous Duty)
Operating
Mode
Entering Air °F Entering Water °F
Minimum Maximum Standard Range Extended Range
DB WB DB WB Minimum Maximum Minimum Maximum
Cooling 65 55 85 71 55 110 50 110
Ambient 50 – 100 – – – – –
Heating 50 – 80 – 55 90 20 90
Ambient 50 – 85 – – – – –
Notes:Intheheatingmode,thesumoftheenteringair+enteringwatermustbe≥100°F.
MINIMUMWATERFLOW=1.5GPM/Ton.
Maximumandminimumvaluesmaynotbecombined.Ifonevalueisatmaximumorminimum,theothertwo
conditionsmaynotexceedthenormalconditionforstandardunits.Extendedrangeunitsmaycombineanytwo
maximumconditions,butnotmorethantwo,withallotherconditionsbeingnormalconditions.
Water Source Heat Pump Operating Temperature Limits At Start-Up
(Not For Continuous Duty)
Operating
Mode
Entering Air °F Entering Water °F
Minimum Maximum Standard Range Extended Range
DB WB DB WB Minimum Maximum Minimum Maximum
Cooling 50 40 105 87 45 120 30 120
Ambient 45 – 110 – – – – –
Heating 40 – 85 – 40 95 20 100
Ambient 40 – 85 – – – – –
Standard Range Units:
Unitsaredesignedtostartinanambientof50°F(10°C)with
entering air at 50°F (10°C), with entering water at
50°F(10°C),withnominalairowandwaterow(3.0GPM/
Ton),forinitialstart-upinheating.
Note: This is not a normal or continuous operating condition.
It is assumed that such start-up is for the purpose
of bringing the building space up to occupancy
temperature.
Geothermal Range Units:
Unitsaredesignedtostartinanambientof40°F(5°C)with
enteringairat40°F(5°C),withenteringwaterat20°F(-7°C),
withnominalairowandwaterow(3.0GPM/Ton),forinitial
start-upinheating.
Note: This is not a normal or continuous operating condition.
It is assumed that such start-up is for the purpose
of bringing the building space up to occupancy
temperature.
Environment
This equipment is designed for indoor installation only.
Sheltered locations such as attics, garages, etc., generally will
notprovidesufcientprotectionagainstextremesintempera-
tureand/orhumidity,andequipmentperformance,reliability,
andservicelifemaybeadverselyaffected.
Power supply
Avoltagevariationof+/-10%ofnameplatevoltageisac-
ceptable.Three-phasesystemimbalanceshallnotexceed2%.