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F1925 (2010 08) Page 3 of 5
2.9
CONTROL CIRCUIT
The internal control circuit shall consist of a current limiting 24VAC
type 65VA transformer with 4A circuit breaker. Compressor Control
Module is standard and includes: Built-in-off-delay timer, adjustable
from 30 seconds to 5 minutes; 2 minute on delay- if power is
interrupted; 120 second low-pressure bypass; and manual lockouts
for high and low pressure controls; alarm output for alarm relay.
3.0 HEAT OPTIONS (Select One)
3.1 None
3.2 Electric Heat
The unit shall have a factory installed electric resistance heater
available that is designed specifically for application in the WA
Series air conditioner. Heater shall include automatic limit safety
controls.
4.0 VENTILATION OPTIONS (Select One)
WA models are designed to provide optional ventilation packages to meet
all of your ventilation and indoor air quality requirements. All ventilation
packages are factory or field installed, and easily removable for service.
4.1 BLANK OFF PLATE OPTIONAL
A blank off plate covers the air inlet openings that restrict any
outside air from entering the unit. The blank off plate should be
utilized in applications where outside air is not required to be mixed
with the conditioned air.
4.2 Economizer OPTIONAL
The built-in economizer system shall be internally mounted and
allows outside air, to be introduced through the air inlet openings.
The amount of outdoor air varies in response to the system, controls
and settings. The economizer module shall be factory or field
installed into the ventilation section. The economizer module shall
be easily removed for service, or easily added after equipment
installation.
The economizer is designed to provide “free cooling” when the
outside air temperature is cool and dry enough to provide needed
cooling without compressor operation. Standard features of the
economizer module:
• One Piece Construction - Easy to install with no mechanical linkage
adjustment required.