Bard CRVS-3A Installation Instructions Manual Download Page 16 | Manualshive

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Manual 2100-759
Page

16 of 16

MIS-348A

Supply Air

Return Air

Evaporator

Coil

DAMPER BLADE

Condenser Air

Direction

Condenser

Coil

FIGURE 9

Call for Compressor or Fan Only

with Ventilation Off

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Summary of Contents for CRVS-3A

Page 1: ...STRUCTIONS Bard Manufacturing Company Inc Bryan Ohio 43506 www bardhvac com Manual 2100 759 Supersedes NEW Date 12 8 21 Commercial Room Ventilator with Exhaust For Use with Bard Heat Pump Models T24H...

Page 2: ...re 1 Removal of Exterior Panels 4 Figure 2 Removal of Exhaust Cover Plate 5 Figure 3 Install Ventilator 6 Figure 4 8403 096 CO2 Sensor Set Up 8 Figure 5 CRV Control Board Wiring 9 Figure 6 CRV Control...

Page 3: ...o bring fresh air in the damper also opens an exhaust relief The exhaust air will flow into the condenser section of the unit The condenser fan will help draw exhaust air out CRV Features One piece co...

Page 4: ...entilator with attached electrical harness and miscellaneous hardware 2 Remove and save the existing exterior blower access and service access panels on the Bard wall mount unit see Figure 1 Open and...

Page 5: ...g unit return air filter and left side filter support bracket by removing two 2 screws from front side of unit see Figure 2 Remove and save top four 4 screws from grille 4 Remove and discard the exhau...

Page 6: ...e 3 Note When installing CRV position so hole in front Plug the 4 125 holes in the service door with insert a self drilling screw WIRES in condenser grille to lip is centered over hole CRV in unit Rig...

Page 7: ...tion set by the OCC potentiometer Energize Y ventilator should open to the position set by the Y1 potentiometer Energize Y1 ventilator should open to the position set by the Y2 potentiometer D De ener...

Page 8: ...O CHANGE ANY SETTINGS WITH THE SIDE BUTTONS TO LOCK THE CO2 DIP SWITCHES MUST BE POSITIONED AS SHOWN FOR PROPER OPERATION MIS 4025 C Settings Recommended Default RON RELAY ON SET POINT 725 ROF RELAY O...

Page 9: ...E STAGE UNIT D FIELD JUMPER FOR CONSTANT VENTILATION BLACK WHITE BROWN WHITE ORANGE BROWN WHITE RELAY BLACK WHITE 56 30 0 CRV CONTROL BOARD 60 Damper Motor RED BLACK BROWN A CO2 Sensor 90 A OPTIONAL C...

Page 10: ...meter Adjusts the airflow during pre purge mode if jumper is installed in positions 30 90 OCC Potentiometer Adjusts the airflow during blower only operation or during an occupied input from an applica...

Page 11: ...E COOLING POT Y1 SETTING FOR WHEN Y2 IS ENERGIZED COOLING OR BLADE POSITION Y1 WILL OVERRIDE OCC POT PP PRE PURGE SET FOR PREOCCUPANCY POT OCC OCCUPIED SETTING TURN OFF FOR C02 FULL MODULATION SETTING...

Page 12: ...ccupied setting is instantaneous and the pre purge setting PP is no longer in the sequence Occupied Setting Occupied is used to ventilate a specified CFM amount when occupants enter the room or struct...

Page 13: ...other end of the gray wire should be connected to the CO2 sensor as stated in Method 1 During 2 10VDC operation with 01 energized and pre purge timed operation active DC voltage signaling occupancy f...

Page 14: ...1100 1200 1300 A B C D E F Airflow cfm Vent Position Total Air 0 ESP Total Air 2 ESP Total Air 4 ESP Vent Air 0 ESP Vent Air 2 ESP Vent Air 4 ESP 0 100 200 300 400 500 600 700 800 900 0 A B C D E F A...

Page 15: ...0 759 Page 15 of 16 FIGURE 8 Call for Ventilation with or without Compressor Operation MIS 347A Supply Air Evaporator Coil DAMPER BLADE EXHAUST AIR Return Air Condenser Air Direction Condenser Coil Ou...

Page 16: ...Manual 2100 759 Page 16 of 16 MIS 348A Supply Air Return Air Evaporator Coil DAMPER BLADE Condenser Air Direction Condenser Coil FIGURE 9 Call for Compressor or Fan Only with Ventilation Off...

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