Electric Heat Kit Installation Manual
Table Of Contents
- Electric Heat Kit
- Table of Contents
- CHECK LIST AFTER INSTALLATION
- Dimensions
- 1. Electric Heat Kit Models
- 2. Electric Heat Kit Accessories
- 3. Safety precautions
- 4. Installing the Electric Heat Kit
- 4.1 Read the safety precautions section of the Multi-Position Air Handler before installing the electric heat option.
- 4.2 Setting proper external static pressure.
- 4.3 Enabling Electric Heat
- 4.4 Operation Mode
- 4.5 Attaching the enclosure to the Air Handler
- 4.6 Proper Support in the Horizontal Position for the Multi-Position Air Handler with Electric Heat Kit:
- 4.7 Rotating circuit breaker orientation for Horizontal Left Installations:
- 5. Electrical Schematics
4.5.I.
Connect the appropriate spade terminals to the proper relay and route the supplied wires labeled “HTR STAGE 1
ASSY CN24-1” and “HTR STAGE 2 ASSY CN24-2” as shown below through the grommets and connect to the correct
connector on the board. They are labeled and colored (Yellow for CN24-1 and Blue for CN24-2).
SVZ ONLY: the wiring to connect the SVZ to the Electric Heater kit is included inside the cabinet of the SVZ. Remove
the coil panel, the wiring is bundled in the top right corner of the cabinet. Cut the tie that secures the bundle and route
the wiring into the Electric Heater cabinet through the grommets. Connect the appropriate spade terminals to the
relays inside the Electric Heater kit. The other end of the wiring will be bundled under the electrical box in the blower
compartment. Loosen the bundle, route the wire into the bottom of the electrical box and connect to the correct
connector on the control board. They are labeled and colored (Y
ellow for CN24-1 AND BLUE for CN24-2).
NOTE
3kW and 5kW models are single stage and will only require connection to one relay labeled CN24-1
in the heater kit and one connector labeled CN24-1 on the control board.
Connect the 2 spade terminals here for
"HTR STAGE 1 ASSY CN24-1"
(Not polarity dependent)
Connect the 2 spade terminals here for
"HTR STAGE 2 ASSY CN24-2"
(Not polarity dependent)
Connect the 2 spade terminals here for
“HTR STAGE 1 ASSY CN24-1”
(Not polarity dependent)
Connect the 2 spade terminals here for
“HTR STAGE 2 ASSY CN24-2”
(Not polarity dependent)
4.5.J. Locate the appropriate knockout based on the wire size and installation position and remove.
NOTE
POWER FOR ELECTRIC HEA
TERS CAN NOT BE SUPPLIED FROM THE OUTDOOR UNIT.
POWER FOR THE ELECTRIC HEATER MUST BE SUPPLIED FROM A SEPARATE POWER
SOURCE.
Follow all local codes when connecting to the air handler, use only copper/aluminum conductors and use the
appropriate conduit size based on the amperage of the Electric Heat Option found in Table 1-2.
Electric Heat Kit
Specifications are subject to change without notice. 23 © 2018 Mitsubishi Electric US, Inc.