Electric Heaters - Carrier WeatherMaster 50GC 14 Series Installation Instructions Manual

Unit without Thru-Base Connection Kit
Pass the thermostat control wires through the bushing on the unit
end panel. Route the wire through the snap-in wire tie and up to
the web bushing near the control box. Route the wire through the
bushing and into the bottom left side of the control box after re-
moving one of the two knockouts in the corner of the box. Use a
connector at the control box to protect the wire as it passes into the
control box. Pull the wires over to the terminal strip at the upper
left corner of the Unit Control Board (UCB). Use the connector at
the control box and the wire tie to take up any slack in the thermo-
stat wire to ensure that it will not be damaged by contact with the
condenser coil. See Fig. 34.
NOTE: If thru-the-bottom connections accessory is used, refer to
the accessory installation instructions for information on routing
power and control wiring.
Heat Anticipator Settings
Set heat anticipator settings at 0.14 amp for the first stage and 0.14
amp for second-stage heating, when available.

Electric Heaters

The 50GC size 14 units may be equipped with field-installed
accessory electric heaters. The heaters are modular in design,
with heater frames holding open coil resistance wires strung
through ceramic insulators, line-break limit switches and a
control contactor.
Heater modules are installed in the compartment below the indoor
(supply) fan outlet. Access is through the electric heat access
panel. See Fig. 35-37.
Not all available heater modules may be used in every unit.
Use only those heater modules that are UL listed for use in a
specific size unit. Refer to the label on the unit cabinet for the
list of approved heaters.
Control Box
Non-Fused
Disconnect*
Convenience
Outlet*
* Factory-Installed Option.
Refer to the Small Roof Top Units Accessory Electric Heater and
Single Point Box installation instructions for further details.
Single
Center
Point Box
Post
Control Wire
Terminal Block
Fig. 36 — Component Location
18
Thermostat Wire
Fig. 34 — Thermostat Wire Routing
Fig. 35 — Access Panel Location
Vane Axial
Indoor Fan System
Heater
(Cover Removed)
Manual Reset
Limit Switch
Heater Mounting
Bracket