Step 2

Choose the CR model with the KW rating which meets the peak demand (GPM) of your system.

 Step 3

Choose the voltage and phase power supply available. Note the total amperage draw of the unit and verify availability.

 KW X  1000
_______________  _{÷ 1.73 = Amps 3 F}
      Volts

Note:
Each branch circuit in the CR Model is rated at a maximum of 48 Amps and each circuit is typically operated as an independent temperature step.

 KW X  1000
_______________ _{= Amps 1 F}
      Volts

Example:

Model CR225MT4 is 225 KW at 480 V 3 F.

225 X  1000
______________ _{469 ÷ 1.73 = 271 Amps Total}
      480

271 ÷ 48 Amps max circuit rating= 5.6
Round up to 6 for the number of heating load temperature steps