Comfort-Aire HEH Series 2 to 5 Tons - Manual (Page 13)

13
Heat Controller, LLC. HEV/H SERIES Installation, Operation & Maintenance
Water
Connection End
Return Air
Remove Screws
Water
Connection End
Return Air
Rotate
Move to Side
Side Discharge
Return Air
Water
Connection End
Discharge Air
Drain
Back Discharge
Replace Screws
Water
Connection End
Supply Duct
Return Air
Water
Connection End
Drain
Return Air
Discharge Air
Side Discharge
Back Discharge
FIELD CONVERSION OF AIR DISCHARGE
Figure 9: Right Return Side to Back
Figure 8: Left Return Side to Back Field Conversion of Air Discharge
Overview - Horizontal units can be fi eld converted
between side (straight) and back (end) discharge using the
instructions below.
Note: It is not possible to fi eld convert return air between left
or right return models due to the necessity of refrigeration
copper piping changes.
Preparation - It is best to fi eld convert the unit on the ground
before hanging. If the unit is already hung it should be taken
down for the fi eld conversion.
Side to Back Discharge Conversion
1.
Place unit in well lit area. Remove the screws as shown
in Figure 8 to free top panel and discharge panel.
2. Lift out the access panel and set aside. Lift and rotate
the discharge panel to the other position as shown,
being careful with the blower wiring.
3. Check blower wire routing and connections for tension or
contact with sheet metal edges. Reroute if necessary.
4. Check refrigerant tubing for contact with
other components.
5. Reinstall top panel and screws noting that the location
for some screws will have changed.
6. Manually spin the fan wheel to ensure that the wheel is
not rubbing or obstructed.
7. Replace access panels.
Back to Side Discharge Conversion - If the discharge is
changed from back to side, use above instruction noting that
illustrations will be reversed.
Left vs. Right Return - It is not possible to fi eld convert
return air between left or right return models due to the ne-
cessity of refrigeration copper piping changes. However, the
conversion process of side to back or back to side discharge
for either right or left return confi guration is the same. In
some cases, it may be possible to rotate the entire unit 180
degrees if the return air connection needs to be on the op-
posite side. Note that rotating the unit will move the piping to
the other end of the unit.