ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT —
This Document is
customer property
and is to remain with this unit. Please return to service information
pack upon completion of work.
Installer’s Guide
18-AC55D1-4
Condensing Units
4TTX6
These instructions do not cover all variations in
systems nor provide for every possible contingency to
be met in connection with installation. All phases of
this installation must comply with NATIONAL, STATE
AND LOCAL CODES.
Should further information be
desired or should particular problems arise which are not
covered sufficiently for the purchaser’s purposes, the matter
should be referred to your installing dealer or local distributor.
A. GENERAL
The following instructions cover 4TTX6 Condensing Units.
See special wiring and sequence of operation on page 5.
NOTICE:
These outdoor units may be used with indoor units
equipped with Thermostatic Expansion Valve only.
WARNING
!
These units use R-410A refrigerant which operates at 50%
to 70% higher pressures than R-22. Use only R-410A
approved service equipment. Refrigerant cylinders are
painted a “Rose” color to indicate the type of refrigerant
and may contain a “dip” tube to allow for charging of liquid
refrigerant into the system. All R-410A systems use a POE
oil that readily absorbs moisture from the atmosphere. To
limit this “hygroscopic” action, the system should remain
sealed whenever possible. Never break a vacuum with air
and always change the driers when opening the system for
component replacement.
Check for transportation damage after unit is uncrated.
Report promptly, to the carrier, any damage found to the unit.
To determine the electrical power requirements of the unit,
refer to the nameplate of the unit. The electrical power
available must agree with that listed on the nameplate.
B. LOCATION & PREPARATION OF THE UNIT
1. When removing unit from the pallet, notice the tabs on
the basepan. Remove tabs by cutting with a sharp tool as
shown in Figure 2 (see page 2).
2. The unit should be set on a level support pad at least as
large as the unit base pan, such as a concrete slab. If this
is not the application used please refer to application
bulletin “XL16i-APG**-EN” (* latest revision number).
3. The support pad must NOT be in direct contact with any
structure. Unit must be positioned a minimum of 12"
1
CAUTION
!
UNIT CONTAINS R-410A REFRIGERANT!
R-410A OPERATING PRESSURE EXCEEDS THE
LIMIT OF R-22. PROPER SERVICE EQUIPMENT IS
REQUIRED. FAILURE TO USE PROPER SERVICE
TOOLS MAY RESULT IN EQUIPMENT DAMAGE OR
PERSONAL INJURY.
SERVICE
USE ONLY R-410A REFRIGERANT AND
APPROVED POE COMPRESSOR OIL.
from any wall or surrounding shrubbery to insure
adequate airflow. Clearance must be provided in front of
control box (access panels) & any other side requiring
service access to meet National Electrical Code. Also,
the unit location must be far enough away from any
5 FT. ABOVE UNIT-UNRESTRICTED
