Make-Up Air Installation Manual

11/23/2011 7 HI309
Sequence (10KW)
A - D. Same as above.
E. If element #1 is on for 10 min. (LED constant), element #2 turns on.
Option
This unit can be used as a 5Kw duct heater for room stat, second stage operation.
Internal to the circuit board is a “W” terminal. Connecting roomstat second stage heat function to this
“W” terminal causes full electric element turn on (by-pass duct sensor).
Utility Company Load Control Requirement
Arrange wiring so load control receiver interrupts the yellow or “Y” input. If the yellow wire is
connected to the heat pump first stage Y function, the load control receiver is before this yellow wire
connection and the outdoor unit yellow wire.
Checkout and Calibration
There is no field calibration or adjustments.
Total element turn on can be accomplished by jumpering system “R” (24 volts) to “W” internal
terminal. In essence, this bypasses the temperature modulation function and causes the element to be
full on.
However, see previous section “Summer or Cooling Disable”.