15
motors. The motors run at a constant torque with very
low power consumption and are energized by 24 VAC.
Adjust the CFM by changing the 24 VAC leads to the
desired speed tap on the terminal block. The ASPT
blower motor speeds are programmed to deliver
NOTE: In some models, not all speed taps are allowable
for certain electric heat applications. Refer to Table 6 for
minimum speed.
Ensure all the gaskets remain intact on all surfaces as
shipped with the unit. These surfaces are areas between
the upper tie plate and blower access panel, blower access
and coil access panels, and between the coil access and
ASHRAE Standard 193.
14 Start-Up Procedure
WARNING
HIGH VOLTAGE
• Prior to start-up, ensure that all electrical wires are
properly sized and all connections are properly
tightened.
• All panels must be in place and secured. For Air Tight
application, gasket must be positioned at prescribed
locations to achieve 1.4% leakage.
• Tubing must be leak free.
• Condensate line must be trapped and pitched to
allow for drainage.
• Low voltage wiring is properly connected.
• Auxiliary drain is installed when necessary and
pitched to allow for drainage.
• Unit is protected from vehicular or other physical
damage.
• Return air is not obtained from, nor are there any
return air duct joints that are unsealed in, areas
vapors or products of combustion such as carbon
monoxide (CO), which may cause serious personal
injury or death.
15 Regular Maintenance
The only item required to be maintained on a regular basis
cleaned or replaced regularly, typically once per month. A
IMPORTANT NOTE: If thumb screws are used to access
the access panel remains in place after re-installation.
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