Trane TEM4 Series User Manual

18-GF75D1-1C-EN
7
Circuit R to O energizes the reversing valve to the
cooling position.
HHeeaattiinngg ((hheeaatt ppuummpp))
When the thermostat calls for heating, the circuit
from R to G is completed and the blower motor is
energized directly by the 24VAC signal from the
thermostat.
The circuit from R to Y is also complete energizing
the compressor contactor of the outdoor unit. The
contactor will close and start the compressor and
condenser fan motor.
In the heating mode, the reversing valve of the
outdoor unit is not energized.
If the indoor temperature continues to fall, the R to
W circuit is completed energizing the electric heat
contactor(s).
HHeeaattiinngg ((eelleeccttrriicc hheeaatt oonnllyy))
NNoottee:: The thermostat must be setup to bring the
blower on when the electric heat is energized.
When the thermostat calls for heating, the circuit
from R to G is completed and the blower motor is
energized directly by the 24VAC signal from the
thermostat. The circuit from R to W is completed
energizing the heating contactor(s).
DDeeffrroosstt
Supplemental heat during defrost can be provided
by connecting the X2 (black) wire from the outdoor
unit to W1 or W2 at the indoor unit. This will
prevent cold air from being discharged from the
indoor unit during defrost.
12. OOppeerraattiioonnaall aanndd CChheecckkoouutt PPrroocceedduurreess
To obtain proper performance, all units must be
operated and charge adjustments made in
accordance with procedures found in the Service
Facts document of the outdoor unit. After
installation has been completed, it is recommended
that the entire system be checked against the
checkout list located at the back of this document.
See “Checkout Procedures,” p. 24
13. MMaaiinntteennaannccee
The system air filter(s) should be inspected, cleaned
or replaced at least monthly. Make certain that the
access panels are replaced and secured properly
before placing the unit back in operation. This
product is designed for dependable service;
however, periodic maintenance should be
scheduled and conducted by trained professional
service personnel. This service should be
conducted at least annually, and should include
testing and inspection of electrical and refrigerant
components. The heat transfer surface should be
cleaned. The blower motor is permanently
lubricated for normal operating conditions.
IInnssttaallllaattiioonn IInnssttrruuccttiioonnss

Trane TEM4 Series Specifications

General

Brand	Trane
Model	TEM4 Series
Category	Air Handlers
Language	English