Heat Controller HTV Series Installation, Operation & Maintenance Instructions Manual page 11

Heat Controller, Inc.
Overview
Horizontal units can be field converted between side
(straight) and back (end) discharge using the instructions
below.
Note: It is not possible to field convert return air
between left or right return models due to the necessity
of refrigeration copper piping changes.
Preparation
It is best to field convert the unit on the ground before
hanging. If the unit is already hung it should be taken down
for the field conversion.
Side to Back Discharge Conversion
1. Place unit in well lit area. Remove the screws as
shown in Figure 4 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 insure 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 field convert return air between left or
right return models due to the necessity of refrigeration
copper piping changes. However, the conversion process
of side to back or back to side discharge for either right
or left return configuration 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 opposite side.
Note that rotating the unit will move the piping to the other
end of the unit.
HTV/HTD/HTH SERIES
Figure 4: Left Return Side to Back
Water
Connection End
Water
Connection End
Water
Connection End
Figure 5: Right Return Side to Back
Return Air
Drain
Discharge Air
10
Remove Screws
Side Discharge
Move to Side
Replace Screws
Back Discharge
Return Air
Supply Duct
Side Discharge
Back Discharge
Retorno de Aire
Return Air
Rotate
Return Air
Return Air
Drain
Discharge Air
Water
Connection End
Water
Connection End
Extremo de Con