41
RC SERIES INSTALLATION MANUAL
Startup Notes
Emergency Electric Resistance Heat
A factory-installed emergency electric heater package is avail-
able. Rated for 2,000 watts on models RC09 through RC12 and
3,000 watts on models RC15 through RC18. The heater package
consists of ni-cad elements, ceramic insulators, and thermal limit
switches. A concealed, chassis mounted rocker switch controls
the heater mode operation and allows the field installation of an
aquastat for boilerless unit operation.
Electrical Disconnect
Field installed on the optional chassis back plate, the console
disconnect provides a permanent electrical connection to the main
electrical supply branch. Wiring between the disconnect and the
unit chassis is field supplied and allows the electrical power source
to the chassis to be interrupted for unit servicing.
Non-Fused
Constructed of heavy gauge galvanized steel, the rocker style
disconnect switch provides reliable electrical control. Wiring
pigtails, using 12-gauge wires, are
factory
installed to simplify field wiring.
Fused
Similar in construction to the non-fused electrical disconnect.
The fused disconnect is available in five models with equip-
ment rated fuses to provide additional circuit protection. The
fuses are panel mounted to allow easy inspection and removal
without removing the cover on the disconnect.
CFD-10 - 10 amp rated fuse
CFD-12 - 12 amp rated fuse
CFD-15 - 15 amp rated fuse
CFD-20 - 20 amp rated fuse
CFD-25 - 25 amp rated fuse
Motorized Outside Air Damper
A field installed motorized outside air damper is available to allow
the introduction of fresh air into the conditioned space through
an outside vent. The damper motor is powered by 24 volts with a
spring-close design in the event of a power failure. The damper
blade and housing are constructed of aluminum for corrosion
resistance and the blade includes a neoprene gasket to prevent air
infiltration during off cycles. The damper assembly is installed on
the optional chassis back plate and a two-wire low voltage connec-
tion simplifies wiring. A concealed, chassis mounted rocker switch
allows the damper to be disabled
Hydronic Loop Controller for
Boiler/Tower Installations
The hydronic loop controller is a microprocessor based control
panel for control of water loop heat rejector (tower), heat supplier
(boiler), and/or water well pumps and circulation pumps. Includes
audible and visual alarms, temperature indication, and add-on
options of low switches, remote alarm sensor wells and pump
alternator.