WLCG/WLHG
High-Wall Air Handlers
• Installation, Operation and Maintenance Manual •
P/N 240008111, Rev. G [06/18/10]
5
Verify Unit Before Installing
(continued)
Minimum on time for heating and cooling
•
Helps eliminate room temperature droop
and system short cycling.
Freeze Protection – Prevents air handler
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freeze up.
Test operation – Allows ease of testing af-
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ter installation (all timers are reduced).
Non-volatile back-up memory will main-
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tain control settings for an indefinite pe-
riod during a power outage. When power
is restored the equipment will resume
operation after a three-minute compres-
sor time delay.
7-day programmable with copy feature.
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Filter change indicator: A timer feature
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indicates when the filter should be cleaned
according to the selected time.
Motorized supply louver with optional
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sweep or six stationary settings.
Modular design – reduces parts required
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for control package. Deco panel, relay
board, ribbon cables and microprocessor
are combined into one package.
Integral condensate pump safety-switch
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connection where-by the microproces-
sor monitors the condensate pump safety
switch and displays an error code when a
fault occurs. (Applies only with optional
condensate pump)
CEC (California Energy Commission)
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compliant
Condensate drain pan over flow protec-
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tion
Cabinet Features:
Durable ABS plastic cabinet with a galva-
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nized steel sub-chassis.
Easily accessible, washable, reusable,
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nylon mesh filter.
Horizontal discharge louver, constructed
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of high temperature ABS plastic, that can
be set to oscillate, or can be parked in six
pre-set positions.
Manually adjustable vertical discharge
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fins.
Easy access to pipe chase area from cabi-
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net bottom allows piping connections and
condensate pump installation with the
unit mounted on the wall.
Easily removable end-cap for access to
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control area for installation and service.
Condensate drain pan constructed of gal-
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vanized steel (G90U), with anti-corrosion
coating.
Modular snap-in, 7-day programmable
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control with large backlit LCD display,
a “Change filter” display feature and se-
lectable Fahrenheit (°F), or Celsius (°C)
temperature scale.
Optional Equipment
Condensate pump (field installed only)
•
24V wall thermostat
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Electric heat with automatic reset high
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temperature cutout and redundant high
temperature fuse link (when heat option
is selected, factory installed only)
Hand-held infrared controller.
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Installer Supplied Items
Low voltage wiring (18 AWG minimum
•
required)
High voltage power supply wiring
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Mounting screws and fasteners
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Condensate piping
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Refrigerant piping (if not supplied)
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Refrigerant (for interconnect charge)
•
