15
RC SERIES INSTALLATION MANUAL
Installation Steps cont.
Step 5: Provide Line Voltage Wiring
Check unit data plate located on control side of chassis for ampacity and fuse size.
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Remove electrical knockouts from chassis backplate.
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Run line voltage wiring through knockout and secure wiring to backplate or disconnect.
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Step 6: Chassis Installation
Level and secure backplate to wall.
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Position the chassis against back plate. Drive (2) screws through holes in lip of backplate into top flange of chassis.
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Step 7: Final Electrical Connection
Install flexible electrical conduit between the backplate or electrical disconnect and the unit mounted junction box.
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Make final wiring connections in disconnect and junction box, taking care to replace all covers when done. Wiring must
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conform to NEC and/or all local codes.
Refer to Electrical Data.
NOTE: It is necessary to make final wiring connections prior to securing unit chassis to back plate on right-hand piping models
with electrical disconnect.
Step 8: Final Water Connection
For ease of installation and sound attenuation, high pressure (recommended) flexible hoses with a swivel fitting should
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be provided. Apply Teflon® tape or sealant compound to threaded hose fittings.
Combination shut-off/balancing valves should be installed on both the supply and return water lines of the unit.
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Flow control valves should be installed on the water discharge line.
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It is recommended that P/T ports be installed on the supply and return water lines.
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Step 9: Set Unit Controls
Locate the “continuous fan/cycle fan” switch within the electrical compartment of the chassis and set to desired position.
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(Remote wall thermostat units do not use this optional switch.)
Optional Control Settings-
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Remote Thermostat - Run low voltage wiring from unit to the desired thermostat location.
Mount and wire thermostat according to manufacturer’s recommendations.
Motorized Outside Air Damper - Locate the “damper on/damper off” damper switch within the electrical compartment of the chassis
and set to desired position.
Emergency Electrical Heat - Locate the “electric heat/normal/boilerless” control switch within the electrical compartment of the chassis
and set to desired position.
Step 10: Secure the Cabinet Cover
Position and lower cabinet over unit chassis. Apply pressure to the front of the cabinet to ensure that the back lip of the
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cabinet hooks over the tabs provided on the backplate.
Secure cabinet to chassis with mounting screws provided.
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Step 11: Perform Final Unit Check
Measure the pressure drop across the water coil and monitor water or air temperatures in both heating and cooling
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modes. The measured values should fall within the acceptable ranges shown in the
Startup Performance table
.