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579884-BIM-A-0710
Figure 3: Typical Field Wiring Diagram NJ-30/-40 Evaporator Units, NJ-50 Air Handler and MACZ-50A Evaporator Coil
when Matched with YJ-30/-40/-50 Condenser
NOTE: On non NJ evaporator models, isolation relays must be
installed to avoid overloading on 75VA transformers on
the condensing unit.
Figure 4: Typical NJ-30/-40 & MACZ-50A Liquid Line
Solenoid Wiring
12
NOTE: For applications on airhandlers/evaporator DX coils
other than NJ-30 thru -50 certified matchups liquid line
solenoids may be required for proper operation and
refrigerant system dump out.
Johnson Controls Unitary Products
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