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SPECIFICATIONS
ELECTRICAL
Power Requirement for control
panels and thermostats only 40 VA
Power Requirement for dampers 10 VA per damper
Max. Current through EAC/HUM terminals 1 amp @ 24 VAC
Max. Current through equipment 1 amp each or
CONTROL PANEL LAYOUT
(1) DAMPERS
a. Separate 24 VAC power input for 2 or 3-wire
dampers.
b. Damper LEDs light when the NO contact is closed.
c. Damper output terminals for 2 or 3-wire dampers.
(2) CONTROL PANEL POWER
a. 24 VAC power input serves the main 6404 panel, up
to four expansion panels and thermostats.
b. The POWER LED light blinks approximately
once per second with power applied.
(3) HUMIDIFIER
a. Dry contact relay that closes during heat calls,
allowing for control of a humidifier.
b. HUM LED lights when the relay is closed.
(4) ELECTRONIC AIR CLEANER
a. Dry contact relay that closes during heating, cooling
and fan calls.
b. EAC LED lights when relay is closed.
(5) EQUIPMENT LEDS
a. LEDs visible through the cover that indicate when the
system is Heating, Cooling or operating the Fan.
b. LEDs adjacent to Equipment output terminals that
allow technician to determine which equipment
outputs are currently energized.
(6) CONFIGURATION SETTINGS
Dip switch settings to configure HVAC outputs,
set plenum sensor temperature limits and control
equipment stage timing.
(7) TIME DELAY OVERRIDE
Time Delay Override button accelerates timing
(6 seconds = 1 minute) for quicker testing of control
panel. The POWER LED blinks approximately twice per
second when the TDO button is pressed.
(8) PLENUM SENSOR
Plenum temperature sensor (8052) inputs.
(9) THERMOSTATS
Thermostat inputs.
(10) ZONE/VAC SELECTOR SWITCH
When on, zone panel responds only to the Zone 1 thermostat and damper terminals do not energize.
(11) E-HEAT SELECTOR SWITCH
Use to put panel in Emergency Heat mode if controlling a heat pump with standard heat/cool thermostats.
Input Voltage 20-30 VAC
Damper Voltage 18-30 VAC
control terminals 3 amp total @ 24 VAC
Fuse Size 3 amp
FIGURE 1 – Control Panel Layout
ENVIRONMENTAL
Operating Temperature 32°F (0°C) to 158°F (70°C)
Operating Humidity up to 90% non-condensing
Shipping Temperature -40°F (-40°C) to 180°F (82°C)
Plenum Temperature
Sensor RPC Model 8052
3
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