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GENERAL INSTALLATION SEQUENCE
1. Pre- stage heater packages and single point boxes by
placing the required component cartons at each unit.
2. Check the heater sales package number and single
point box part number (if used) against the part
numbers on the unit's dataplate.
3. Disconnect the power wiring into the unit control box
from the factory- installed non- fused disconnect
switch or HACR breaker and withdraw wiring from
the control box.
4. Install the single point box, and connect power wiring
tap conductors to field power terminals in main
control box.
5. Remove heater cover and save screws.
6. Install the electric heater module(s) and connect
heater power conductors to single point box or main
unit control box per appropriate connections.
7. Connect the heater control contactors to unit terminal
block TB4.
8. Mark the unit dataplate to indicate which heater
module(s) have been installed.
9. Note the required wire size ampacity for the field
power supply conductors as marked on the unit
dataplate as MIN CKT AMPS for accessory heater(s)
plus convenience outlet and power exhaust when
provided. Select and install suitable field power
conductors from external safety disconnect to unit
power connection points, or confirm wiring already
provided is suitable for required MIN CKT AMPS.
Fig. 38 - Typical Single Point Kit Installation
Fig. 39 - Typical Access Panel Location
Fig. 40 - Typical Component Location
32
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