Bard DC3002, Dc3003

Manual 2100-484E

Page 14 of 22

FIGURE 4

DC3003 CONNECTION DIAGRAMS

3 UNITS WITH ECONOMIZERS

(NO ECONOMIZER A/C #3)

Contents

Main CONTENTS Getting Other Information and Publications FOR MORE INFORMATION, CONTACT THESE PUBLISHERS: SHIPPING DAMAGE GENERAL THEORY OF OPERATION ** IMPORTANT ** SPECIFICATIONS/FEATURES FOR BASIC CONTROLLER MOUNTING THE CONTROLLER TEMPERATURE SENSORS TEMPERATURE SENSOR LOGIC Note: All alarm relays are dry contacts rated 1A @ 24VAC, 120VAC or 150VDC. CONTROLLER INPUT/OUTPUT SPECIFICATIONS NOTE: Sensors are solid state, not RTD. Use Bard sensors only. LOW VOLTAGE FIELD WIRING CONTROLLER GROUNDING CONTROLLER POWER-UP FIRE SUPPRESSION CIRCUIT STAGING DELAY PERIODS CAUTION SEQUENCE OF OPERATION COOLING AIR CONDITIONERS (WITH ECONOMIZERS) HUMIDITY CONTROL OPTION SEQUENCE OF OPERATION HEATING (AIR CONDITIONERS W/ELECTRIC HEAT) SECURITY (LOCKING) FEATURE IMPORTANT DC FAN CONTROL DC FAN PURGE OPTION CONTROLLER WIRING Page Page Page Page Page ALARM WIRING 2ND STAGE COOLING ALARM REFRIGERANT PRESSURE ALARMS EMERGENCY VENTILATION SEQUENCE USING ECONOMIZERS Page Page PROGRAMMING INSTRUCTIONS Manual 2100-484E Page 20 of 22 Cooling Heating Lead Unit Operation Programming Display Menu Alarms Comfort Mode Programming Instructions FIGURE 8 PARTS LIST DESCRIPTION DIAGRAM TABLE 2 Manual 2100-484E Page 22 of 22 Parts List