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OPERATION INSTRUCTIONS
ENERGY RECOVERY VENTILATOR
Model:
WITH EXHAUST
920-0074
QWSERV
For Use With Bard
2 Through 5 Ton
QW*S Series
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead, just as planned.
Manual:
2100-533A
Supersedes:
2100-533
File:
Volume II, Tab 14
Date:
12-08-10
Manual
2100-533A
Page
1 of 12
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Summary of Contents for Bard 920-0074 QWSERV
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Page 1: Operation Instructions
OPERATION INSTRUCTIONS ENERGY RECOVERY VENTILATOR WITH EXHAUST 920-0074 Model: QWSERV For Use With Bard 2 Through 5 Ton QW*S Series Manual: 2100-533A Bard Manufacturing Company, Inc. Supersedes: 2100-533 Bryan, Ohio 43506 File: Volume II, Tab 14 Since 1914...Moving ahead, just as planned. -
Page 2: Table Of Contents
Summer Cooling Performance ....5 Energy Recovery Ventilator Maintenance ..6 & 7 Table 3 Winter Heating Performance ....6 Maintenance Procedures ........7 COPYRIGHT DECEMBER 2009 BARD MANUFACTURING COMPANY, INC. BRYAN, OHIO USA 43506 Manual 2100-533A Page 2 of 12... -
Page 3: Electrical Specifications
ELECTRICAL SPECIFICATIONS CONTROL REQUIREMENTS GENERAL DESCRIPTION The Energy Recovery Ventilator was designed to 1. Indoor blower motor must be run whenever the ERV provide energy efficient, cost effective ventilation to is run. meet I. A. Q. (Indoor Air Quality) requirements while 2. -
Page 4: Recommended Control Sequences
QWSERV to operate anytime the blower is operational, you will need to install a jumper wire from “G” to “A”. If you prefer to use Bard 8403-056 controller to make the ventilation “on-demand”, there is a connection adjacent to the thermostat... -
Page 5: Performance & Application Data
PERFORMANCE AND APPLICATION DATA TABLE 2 SUMMER COOLING PERFORMANCE (INDOOR DESIGN CONDITIONS 75° DB / 62° WB) – – – LEGEND Ventilation Load – Total HRT = Heat Recovery – Total VLS = Ventilation Load – Sensible HRS = Heat Recovery – Sensible = Ventilation Load –... -
Page 6: Energy Recovery Ventilator Maintenance
TABLE 3 WINTER HEATING PERFORMANCE — (INDOOR DESIGN CONDITIONS 70°F DB) . f f . f f . f f NOTE: Sensible performance only is shown for winter application. LEGEND VLT = Ventilation Load – Total HRS = Heat Recovery – Sensible VLS = Ventilation Load –... -
Page 7: Maintenance Procedures
Proper cleaning of the Bard energy recovery wheel will ANNUAL MAINTENANCE restore latent effectiveness to near original performance. -
Page 8: Figure 2 Belt Replacement
FIGURE 2 BELT REPLACEMENT INSTRUCTIONS Belt Replacement Route (1) replacement belt Instructions in top groove of pulley. Route (1) replacement belt in bottom groove of pulley. If belts "squeak" or "chirp" lubricate lightly with LPS-1 or equivalent "dry film" lubricant. MIS-2166 Manual 2100-533A Page... -
Page 9: Figure 3 Hub Assembly With Ball Bearings
FIGURE 3 HUB ASSEMBLY WITH BALL BEARINGS Manual 2100-533A Page 9 of 12... - Page 10 Manual 2100-533A Page 10 of 12...
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Page 11: Figure 4 Disconnect & Tape Off Wiring
FIGURE 4 DISCONNECT & TAPE OFF WIRE DISCONNECT AND TAPE OFF FOR CO2 CONTROLLED VENTILATION MIS-2759 Manual 2100-533A Page 11 of 12... - Page 12 FIGURE 5 FIELD SET CO SENSOR JUMPERS QWSERV VENT PACKAGE CONTROLLER SETTING FOR 1000 PPM SW2SW1 MIS-2756 "SW2" SET TO ON "AN" SET TO VOLTAGE "SW1" SET TO ON "OUT" SET TO 20-100% Manual 2100-533A Page 12 of 12...
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