FORM
ELECTRICAL WIRING
Follow local electrical codes when making electrical connections. Units are completely factory wired for normal supply voltages
Provide individual power disconnects for each unit, or each section in the case of split applications. Install a secure ground to both evaporator and condenser. If canvas joiners are used on ductwork, install a ground wire to the ductwork as well. Unit requires installer to provide a 24volt thermostat with appropriate heating and cooling stages as needed. The condenser section electrical cover is installed with wiring diagrams on the inner access door, which must be opened to read the diagrams.
Disconnect and lock out power when servicing unit. Unit may start automati- cally if power is not disconnected. Fail- ure to do so may result in personal injury or death due to electrical shock.
PACKAGED UNIT
If unit is to be installed as a complete integral unit, the thermostat (low voltage) wiring is to be brought through connection “A”, while power wiring will be brought through connection “C”). Make sure you check the unit data plate for full specifications as previously mentioned (i.e. minimum circuit ampacity and fuse size).
SPLIT SYSTEM
If the unit is a split system application (condenser sec- tion remote from evaporator section), the following wir- ing instructions are applicable. The thermostat wiring is brought through connection “A” on the evaporator section, and is then interconnected via connection “B” on the condenser section. The power wiring is brought through “C” on the condenser section. The power feed to the evaporator is run through “D” on the evaporator section.
IMPORTANT: All wiring must comply with applicable local and national codes (NEC). Type and location of disconnect switches must comply with all applicable
codes.
For low voltage wiring, 18 gauge wire may be used for up to 50 feet lengths. Low voltage runs up to 125 feet require
12 | JOHNSON CONTROLS |
