Location; Selecting Comfort Control Location; Sub-Base Installation - Trane ACONT900AC43UA Service Manual

(A/T)CONT900AC43UA Installer Guide
Step 2
Check the ratings given in the instructions and on
the product to make sure the product is suitable for
your application.
Step 3
Installer must be a trained, experienced service tech-
nician.
Step 4
After completing installation, use these instructions
to check out the product operation.
Voltage Hazard. Can cause electrical shock or
equipment damage. Disconnect power before
beginning instructions.

Location

Install the Comfort Control about five feet (1.5m)
above the floor in an area with good circulation at
average temperature (See Figure 1.)
Figure 1
C - A 4
TCONT900AC43UA Installer's Guide
WARNING
4 Heat/3 Cool/ Heat Pump
Communicating Programmable 3-Wire Hookup

Selecting Comfort Control location

Do not install the Comfort Control where it can be
affected by
• Drafts or dead spots behind doors and in
corners.
• Hot or cold air from ducts.
• Radiant heat from sun or appliances.
• Concealed pipes and chimneys.
• Unheated (uncooled) areas such as an outside
wall behind the Comfort Control.

Sub-base installation

The Comfort Control can be mounted horizontally
on the wall or on a two inch by four inch wiring box.
Position sub-base horizontally on the wall or on a two
inch by four inch wiring box.
Step 1
Turn OFF all power to heating and cooling equip-
ment.
Step 2
If an existing Comfort Control is being replaced:
a.) Remove existing Comfort Control from the wall.
b.) Disconnect wires from existing control, one at
a time. Be careful not to allow wires to fall back
into wall.
c.) As each wire is disconnected, record wire color
and terminal marking.
d.) Discard or recycle old Comfort Control.
Step 3
Separate the Comfort Control from the sub-base to
expose mounting holes.
Step 4
Position and level the sub-base wallplate (for appear-
ance only.) The Comfort Control functions properly
even when not level.