York DNH018 Technical Manual
Also see for CHAMPION PLUS DNH018: Installation manual
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Contents
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036-21233-002-A-090328 Unitary Products GroupTYPICAL WIRING DIAGRAM NOTES1. All field wiring to be accomplished following city, localand/or national codes in effect at time of installation ofthis unit.2. Caution: Label all wires prior to disconnection when ser-vicing controls. Wiring errors can cause improper anddangerous operation if any of the wire as supplied withthis unit must be removed it must be replaced with type105°C, 600V wire or equivalent clearly renumbered foridentification. Verify proper operation after servicing.3. Motors are inherently protected.4. See unit nameplate for maximum fuse size and minimumcircuit ampacity.5. Unit factory wired for low or medium speed indoor bloweroperation to change motor speed connect speed tapwires from indoor blower motor per Detail B (Figure 18)tape unused speed tap wires to prevent shorting andsecure near M2 contactor.6. Select indoor blower speed to remain within the temper-ature rise range on the nameplate in heating and toobtain approximately 400 CFM/Ton in cooling.7. If both LR and ASCT are present, wire 801/BL and 805/BL are connected to ASCT-3 if LR only is present wire801/BL and 805/BL are connected to M1 coil. If ASCTonly is present wire 202/Y is connected to ASCT-3. Ifneither LR or ASCT are present, Wire 202/Y is connectto M1 coil.8. Shunt contact also used with crankcase heater.(Optional).FIGURE 17 - TYPICAL WIRING DIAGRAM LEGEND1Open all disconnects before servicing this unit.(ALTERNATE)(ALTERNATE)1. See Figures 13, 14, 15 and 16. |
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