NorAire EB-HPH Series, Installation & Operating Instructions Manual

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09/06/2018 27 BI903
Load Management Connection
If this system is being interfaced to a dual fuel or off-peak rate. Make the connection as shown
below.
Note:
The LMC circuit is a powered circuit and must be connected to a dry contact. If an
external power source is connected to this circuit, intermittent operation or circuit board
failure can be expected.
Flow Switch Hookup
This NorAire does NOT include a system flow switch. If one is required, it must be added in the
field. Connect as shown below. NOTE: J4 jumper must be removed.
Safety Flow Switch Option
The standard IDU does not come with an interlocking flow switch. The control board has a hookup
provision for this kit. The compressor has high pressure protection if there is no water flow, but if there is
no water flow during defrost and the ODU has an extended defrost time, it is feasible the heat exchanger
coax coil could freeze and be damaged.

Optional kit is 6027-75

Connect the two wires to the spade tab labeled “FLOW” (T4) and any C tab

In addition, there is a jumper above the “FLOW” tab labeled J4, this must be pulled off