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Manual 2100-448E
Page

12 of 13

FIGURE 6

CALL FOR BLOWER OPERATION

COMMERCIAL ROOM VENTILATOR –
W**A, W**H AND W**L SERIES

FEATURES

•

One piece construction – easy to install with no
mechanical linkage adjustment required.

• Exhaust air damper – built in with positive closed

position.

• Actuator motor – 24 volt, power open, spring return

with built in torque limiting switch.

• Provides up to 75 percent of outside air.

COMMERCIAL ROOM VENTILATOR
SEQUENCE OF OPERATION

On a call for blower operation, CRV opens to position
as set by minimum position potentiometer. See
Figure 6.

Содержание CRVS-3

Страница 1: ...CRVP 3 CRVP 3L For Use with Bard 1 1 2 through 3 Ton Wall Mount Air Conditioners and Heat Pumps Manual 2100 448E Supersedes 2100 448D File Volume III Tab 19 Date 03 09 10 Bard Manufacturing Company In...

Страница 2: ...al of Exterior Panels 4 Figure 2 Removal of Exhaust Cover Plate 5 Figure 3 Re Routing Wires Left Hand Units 6 Figure 4 Inserting Ventilator Into Unit 7 Figure 5 CRV Wiring Diagram 9 Figure 6 Call for...

Страница 3: ...is received and before signing the freight bill verify that all items have been received and that there is no visible damage Note any shortages or damage on all copies of the freight bill The receivin...

Страница 4: ...tilator with attached electrical harness and miscellaneous hardware WARNING Open and lock unit disconnect switch before installing this accessory to prevent injury or death due to electrical shock or...

Страница 5: ...exhaust cover plate 3 Remove and save existing unit return air filter and left side filter support bracket by removing two 2 screws from front side of unit Remove and save top four 4 screws from grill...

Страница 6: ...right until it is tight against the back of the control panel See Figure 4 5 For Installation of Left Hand Units Only Remove strain relief in right side of CRV Unclip the right side wire tie holding t...

Страница 7: ...ough the 7 8 bushing in control panel Figure 4 into low voltage box FIGURE 4 INSERTING VENTILATOR INTO THE UNIT IMPORTANT Position front lip of ventilator under front grille and on top of condenser pa...

Страница 8: ...on with heat cool in OFF position D Ventilator should open to the position set by position adjustment thumbwheel on the CRVS or to the blade stops on the CRVP On the CRVS cycle position adjustment thu...

Страница 9: ...ng Refer to the graphs on the following pages to determine the blade setting necessary to achieve the ventilation air required With the blower energized use the thumbwheel on the CRVS 3 adjust blade t...

Страница 10: ...0 700 800 900 A B C D E F Vent Position Airflow cfm Total Air 0 ESP Total Air 15 ESP Vent Air 0 ESP Vent Air 15 ESP 0 100 200 300 400 500 600 700 800 900 A B C D E F Vent Position Airflow cfm Total Ai...

Страница 11: ...Vent Position Airflow cfm Total Air 0 ESP Total Air 15 ESP Total Air 3 ESP Vent Air 0 ESP Vent Air 15 ESP Vent Air 3 ESP W30A H L W36A H L LOW SPEED TOTAL AND VENTILATION AIRFLOW 0 100 200 300 400 500...

Страница 12: ...hanical linkage adjustment required Exhaust air damper built in with positive closed position Actuator motor 24 volt power open spring return with built in torque limiting switch Provides up to 75 per...

Страница 13: ...al 2100 448E Page 13 of 13 FIGURE 7 CALL FOR COOLING OPERATION A call for cooling cycles the compressor and dampers remain in the ventilation mode On loss of blower operation CRV closes fully See Figu...