ECR RetroAire R90C Installation, operation & maintenance manual - page 16
Before Operating Unit
☐
Read and understand contents of this manual.
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Install unit per instructions outlined in this manual
and all applicable local and national codes.
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Verify electrical supply matches electrical
requirements of unit, and unit is properly
grounded.
☐
Examine control box. Verify all wire connections
are secure, and control board jumpers are in
proper positions.
See "Electrical Connections"
Page 29.
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Verify chassis is properly fitted to wall sleeve and
securely mounted to surrounding framing.
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Verify chassis is level:
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Pour water into drain pan.
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Verify water flows through drain hoses to
condenser side of unit.
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Verify indoor blower wheels and outdoor fan
blades are secured to their motor shafts, and
rotate freely.
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Verify all sheet metal panels are in place and
secure.
☐
Attach front panel to existing cabinet enclosure.
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Verify nothing interferes with room discharge air
or return air of units. Examples:
–
Check for curtains or drapes that obstruct air
flow. See Figures 6 and 7.
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Check for plush carpeting that can obstruct
return air.
–
Items like these can cause serious damage to
chassis.
INSPECTION & START-UP
Any obstruction of supply air, including use of deflector
baffles, may cause condensate to form on louver or cabinet
See Figure 6.
Figure 6 Proper Air Flow Example
Figure 7 Restricted Air Flow Diagram
For optimum performance of your PTAC/PTHP, avoid
restricting air flow. Position of curtains or drapes over
supply air grille may cause air to recirculate without
cooling room. Unit will short cycle and may cause
premature compressor failure See Figure 7.
The Right Fit for Comfort
16
P/N 240010330, Rev. A [10/15/2013]