25
All external devices must be powered via a
separate external power supply.
Example:
A total of 5 wires must be pulled 75ft to a
control the unit. What size wire must be
used?
According to Table 5, 18 AWG allows for
70ft (350 ft. /5 wires) and 16 AWG allows for
100ft (500 ft. /5 wires). Thus, 16 AWG must
be used.
Duct Connection
Do not connect the full duct to the unit
without a transition piece.
Unit is shipped with flattened flanges;
flanges must be modified before installation.
Figure 8 - Flattened Duct Flanges
Fold flanges up to the 90
°
position. Do not
fold flanges more than once or past 90
°
.
Doing so may cause damage to unit.
Attach duct to flanges provided on the unit.
Use a properly sized duct transition to
connect supply duct to unit supply air
opening. The installer is responsible for
sealing ducts to the flanges to prevent air
leaks.
Intake air enters the side of the WV Series
units, where the air filters are located. The left
or right hand return depends on feature
selected when ordering the units. Ductwork
must be sized in accordance with the
ASHRAE Handbook. Ductwork must be
installed in accordance with NFPA Standard
90A.
When attaching duct to the unit, use a
flexible/compressible material rated for duct
connections. A three inch flexible connector
for both return and supply duct connections
is recommended.
Startup
(See back of the manual for startup form)
During startup, it is necessary to perform
routine checks on the performance of the unit.
This includes checking of the air flow, the air
filters, and water flow. Due to the charge-
critical nature of these units, refrigerant
pressure gauges must only be hooked up to
the unit if there is suspicion of an issue within
the circuit.
Improper installation, adjustment,
alteration, service or maintenance can
cause property damage, personal
injury or loss of life. Startup and
service must be performed by a
Factory Trained Service Technician. A
copy of this IOM must be kept with the
unit.
Electric shock hazard. Shut off all
electrical power to the unit to avoid
shock hazard or injury from rotating
parts.
WARNING
WARNING
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