Aprilaire 8346 User's Guide download pdf (Page 13)

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6303 Control Panel

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PLENUM TEMPERATURE CONTROL (ADJUSTABLE)

• Protects equipment from excessive high and low temperatures

caused by reduced airflow when small zones are calling.

THERMOSTAT FLEXIBILITY

• Use any four wire heat/cool thermostat in each zone or a heat

pump thermostat in zone one.

L.E.D. STATUS INDICATORS

• Simplifies start up and troubleshooting for the contractor.

TIME DELAY OVERRIDE

• Speeds checkout for the installer.

WORKS WITH TWO OR THREE WIRE DAMPERS

• Compatibility if you are changing out an old panel with

three wire dampers.

ADJUSTABLE PURGE TIMING

• Compatibility with all brands of equipment.

ELECTRIC / NON-ELECTRIC SWITCH

• Proper control of the fan (G-terminal) for either electric

or fossil fuel furnaces.

Model 6303

6303 Control Panel

THE EASIEST HEAT PUMP CONTROL AVAILABLE

The Model 6303 control panel is designed for single-stage compressor,

heat pump systems only. A single-stage heat/cool (four wire) thermostat

can be used in each zone for the most economical installation solution;

however, a heat pump thermostat can be used in zone one for living space

control of the emergency heat mode. When heat/cool thermostats are used in all zones,

emergency heat is set at the control panel via a convenient switch. Auxiliary heat is controlled by a

fixed timer set for 20 minutes to assure homeowner comfort without expensive heat pump thermostats. The

simplicity and low cost of the Model 6303 make it perfect for new construction applications or existing homes.

Step One: Select A Zoned Comfort Control Panel

ANY ZONE SETS MODE

• Provides true independent control for each zone.

CONTINUOUS FAN BY ZONE

• Individual zone thermostats can call for fan operation by zone.

ZONE CHANGEOVER BASED ON TIME

• If calls for opposite modes exist, the control panel will alternate to

satisfy each call.

FAN PURGE

• Assures air is directed to last zone(s) calling.

SHORT CYCLE PROTECTION

• Protects the HVAC equipment from too frequent cycling.

MAINTENANCE FREE

• No maintenance or adjustments needed after installation.

CONSUMER BENEFITSCONSUMER BENEFITS CONTRACTOR BENEFITS

Zones 1–3 Single-Stage Heat/Cool

R (24V-hot)

W (Heat)

Y (Cool)

G (Fan)

Programmable

• Aprilaire Model 8363

• Aprilaire Model 8570

Non-Programmable

• Aprilaire Model 8344

Zone 1 Only

(Provides control of Emergency

Heat from Thermostat)

Single-Stage Heat Pump

R (24V-hot)

O (Reversing Valve-Cool)

W (Auxiliary Heat)

Y (Compressor)

G (Fan)

Programmable

• Aprilaire Model 8365

• Aprilaire Model 8570

Non-Programmable

• Aprilaire Model 8346

ZONE TYPE TERMINALS REQUIRED

RECOMMENDED THERMOSTATS

THERMOSTAT REQUIREMENTS

*An available “C” terminal (24-volt common) in each zone of the control panel can be used for 24-volt powered thermostats.

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Aprilaire 8346 User's Guide Page 13

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