S&P TRC1200 Installation, Operation & Maintenance Manual page 9

FIELD CONVERSION OF OPENINGS
The TRC1200 is designed to allow field conversion of the unit openings. This means the motorized
impeller subassemblies can be moved to an adjacent wall of the unit if that opening is preferred. The
outlet openings can also be moved to an adjacent wall.
Before you start, plan the duct work layout:
• Determine which openings are to be converted.
• Turn off the disconnect switch on the unit.
• Make sure electrical power is shut off to the unit and disconnect switch.
• Remove the access doors from the unit.
• Remove the core strap, filters, and energy exchanger cores from the unit.
TO FIELD CONVERT INLET OPENING
1. Disconnect motor harness connector (A) by the motor. Move the wire harness out of the way
if necessary.
2. Support the impeller subassembly. Remove the eight ¼-20 bolts (B) retaining the impeller
subassembly plate to the side rails and front and back tabs.
3. Lift the entire impeller subassembly (C) out of the unit and set aside. Leave the rails in the unit.
4. Remove the patch pan (D) from the desired opening.
5. Using the exposed sheet metal cutout, cut the insulation from the desired opening.
6. Seal the edges of the cut insulation to prevent erosion of the insulation edges and having debris in
the airstream.
7. Install the patch pan over the undesired opening.
8. Install the insulation in the undesired opening. Seal the insulation.
9. Remove the duct flange from the undesired opening and install it at the desired opening.
10. If both inlet openings are to be converted, repeat Steps 2–9 for the second inlet opening.
1 1. At this point, if there are outlet openings for conversion, you will want to address them before
proceeding with the inlet opening.
12. After converting the outlet openings move the unit floor brackets (E), if necessary, so when the unit is
re-oriented the floor brackets support the unit on the floor.
13. Rotate the unit to the desired orientation, if necessary.
14. Install the impeller subassembly into the new inlet opening and fasten with eight ¼-20 bolts to retain
to the side rails and front and back tabs. Make sure the motor harness connector is towards the front
of the unit.
15. Connect the motor harness.
16. Repeat Steps 14–15 for other impeller subassembly if required.
17. Tidy up any wire harnesses that were moved making sure motor wires are taut and away from the
impeller blades.
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TRC1200
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