Carrier 50FCQ 04-07 Series Service And Maintenance Instructions page 60

Heating
To start unit, turn on main power supply. Set system selector
switch to the HEAT position and set thermostat at a setting above
room temperature. Set fan to AUTO position.
First stage of thermostat energizes the first stage of the electric
heaters. Second stage of thermostat energizes the second stage of
electric heaters (if installed). Check heating effects at air supply
grille(s).
If electric heaters do not energize, reset limit switch (located on
supply-fan scroll) by pressing button located between terminals on
the switch.
To shut unit off, set system selector switch to the OFF position.
Resetting thermostat at a position below room temperature
temporarily shuts unit off until space temperature falls below ther-
mostat setting.
Ventilation (Continuous Fan)
Set fan and system selector switches at ON and OFF positions, re-
spectively. Evaporator fan operates continuously to provide con-
stant air circulation.
FASTENER TORQUE VALUES
Heat shield screws
Stator motor mounting
screws
Fan rotor mounting screws
Limit switch screws
Fan Deck bracket screws
Condenser fan motor
mounting screws
Condenser fan hub set
screw
Compressor mounting bolts 65 in.-lb (7.3 Nm) +10 in.-lb (1.2 Nm)
30 in.-lb (3.4 Nm) ±2 in.-lb (0.2 Nm)
23 in.-lb (2.6 Nm) ±2 in.-lb (0.2 Nm)
23 in.-lb (2.6 Nm) ±2 in.-lb (0.2 Nm)
50 in.-lb (5.7 Nm) ±5 in.-lb (0.6 Nm)
50 in.-lb (5.7 Nm) ±5 in.-lb (0.6 Nm)
30 in.-lb (3.4 Nm) ±3 in.-lb (0.3 Nm)
60 in.-lb (6.8 Nm) ±5 in.-lb (0.6 Nm)
START-UP, RTU OPEN CONTROLS
IMPORTANT: SET-UP INSTRUCTIONS
Installation, wiring and troubleshooting information for the
RTU Open Controller.: "RTU Open Multi-Protocol Controller
Factory-Installed Option — Controls, Start-up, Operation and
Troubleshooting Instructions." Have a copy of this manual
available at unit start-up.
START-UP, SYSTEMVU CONTROLS
IMPORTANT: SET-UP INSTRUCTIONS
Installation, wiring and troubleshooting information for the
SystemVu™ Controller.: "50FCQ 04-07, 50GCQ 04-06
Single Package Rooftop Units with SystemVu Controls Ver-
sion X.X Controls, Start-up, Operation and Troubleshooting."
Have a copy of this manual available at unit start-up.
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