Product guide

G o t o w w w . a p r i l a i r e p a r t n e r s . c o m t o o r d e r l i t e r a t u r e o r d o w n l o a d p r o d u c t d o c u m e n t a t i o n .
31
Control Panel Wiring Diagrams
APRILAIRE MODEL 6303 CONTROL PANEL
WIRING DIAGRAM
R 24V (hot) Thermostat voltage
C 24V (com) T-stat (if required) &
damper voltage
W/W2 Heat or Auxiliary Heat (thermostats
and equipment)
Y Cooling or Compressor (thermostats
and equipment)
G Fan (thermostats and equipment)
O Reversing Valve—Cool
B Reversing Valve—Heat
NC Normally closed damper output
NO Normally open damper output
RH Heating transformer—24V (hot)
RC Cooling transformer—24V (hot)
24VAC Voltage source for control panel,
T-stats and dampers
CONTROL PANEL TERMINAL DESIGNATIONS
Single-stage heat pump with auxiliary heat application.
RATED VOLTAGE 20 to 30 VAC
RATED CURRENT 3 amp
FUSE RATING 3 amp, slow blow fuse
MAXIMUM AMBIENT TEMPERATURE 140˚F
RH AND RC TERMINALS Independent heat and cool relays for
2 transformer systems
PLENUM SENSOR
HIGH LIMIT TEMPERATURE Selectable between 120˚F and 160˚F
PLENUM SENSOR
LOW LIMIT TEMPERATURE Selectable between 40˚F and 45˚F
PRODUCT SPECIFICATIONS
ADDITIONAL INSTALLATION FEATURES
• 45 degree angled terminals
• Enclosure accommodates wiring from the side or rear
• Wiring diagram on front cover
• Available common terminal for 24 volt powered stats
• Compatible with power-stealing thermostats
• Fuse protection with extra fuse on board
• Convenient control of Emergency Heat through thermostat or on
board switch
• Emergency heat led indication through control
panel cover
MAX. # OF
POWERED
REQUIRED VA DAMPERS
40 3 or Less
75 4 thru 6
Recommend the 8028 7 or more
Damper Power
Distribution Panel
TRANSFORMER REQUIREMENTS