Trane TTV250 Installation Operation & Maintenance page 9

WARNING:
OPEN AND LOCK UNIT DISCONNECT
TO PREVENT INJURY OR DEATH FROM ELECTRIC
SHOCK OR CONTACT WITH MOVING PARTS BEFORE
ATTEMPTING ANY INSTALLATION OR MAINTENANCE.
The general location of the air handler is normally selected by
the architect, contractor, and/or buyer. For proper installation
the following items must be considered.
1. Available power supply must agree with electrical data on
component nameplate.
2. Air handlers shipped wired for 380 - 450 Volt application.
3. If external accessories are installed on the unit, additional
clearance must be provided.
4. All duct work should be properly insulated to prevent
condensation and heat loss.
Note: It is recommended that the outline drawings on page be
studied and dimensions properly noted and checked against
selected installation site.
Important: If adding external accessories to the unit, additional
clearance must be considered for the overall space needed.
For Installation of accessories available for this air handler,
follow the instructions packed with each accessory.
Lifting Recommendations
Before preparing the unit for lifting, the center of gravity should
be determined for lifting safety. Because of the placement of
internal components, the unit weight may be unevenly
distributed.
WARNING:
ON SITE LIFTING EQUIPMENT MUST BE
CAPABLE OF LIFTING THE WEIGHT OF THE UNIT WITH
AN ADEQUATE SAFETY FACTOR. THE USE OF UNDER-
CAPACITY LIFTING DEVICES MAY RESULT IN
PERSONAL INJURY OR DEATH AND CAUSE DAMAGE
TO THE UNIT.
The unit can be moved using a forklift of suitable capacity. For
lifting the unit into an elevated mounting position, run lifting
straps or slings under the unit and attach securely to the lifting
device. Use spreader bars to protect the unit casing from
damage. Test lift the unit to determine proper balance and
stability.
U n t i n I s a t l l t a o i n
Caution: Use spreader bars to prevent straps from damaging
the unit. Install the bar between lifting straps, both underneath
the unit and above the unit. This will prevent the straps from
crushing the unit cabinet or damaging the unit finish.
All units must be mounted level to assure proper
drainage and operation.
Vertical - Floor Mounting
It is generally recommended that the unit be mounted on a
sub-base so that adequate height can be provided for a
condensate drain trap. However if adequate drainage can be
provided, the unit may be mounted directly on the floor. It is
recommended that either a polyurethane or thin rubber gasket
be applied to the unit base to prevent paint damage and
subsequent corrosion.
Before installing any unit make sure proper preparation has
been made at each unit location for piping and electrical
connections.
Allow adequate space for the unit and free air or service
clearance. All TTVs can be installed back to the wall. Service
clearance required is 1m at both left and right hand sides of
the TTV, 1m in front of the coil is minimum recommended airflow
clearance.
(c) Coil piping connections
All refrigerant piping connection are made inside the unit, to
prevent from shipping damage. Connections to outdoor units
can be made from the left or right hand side of the TTV.
Caution: Protect adjacent surfaces from heat damage, when
brazing around the air handler.
Caution: These air handlers are shipped with a holding charge
of N until refrigerant lines are ready to be connected.
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All refrigerant piping should be insulated.
As TXVs, sensing bulbs and equalizing lines are easily damage
by heat, ensure sufficient cooling [with damp cloth] is given
when brazing in suction / liquid lines to outdoor unit. Sight
glass are not factory provided. Braze in to the liquid line outside
the TTV.
Important: Ensure that the refrigerant lines passing through
the cabinet are not resting on sharp sheet metal edges.
Installation, brazing, leak testing, and evacuation of
refrigeration lines are covered in the installation instructions
packaged with the outdoor unit. Read the instruction before
beginning installation of refrigerant lines.
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