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Bard 920-0074 qwserv manual

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Table of contents for the manual

  • Page 1

    Manual 2100-533A Page 1 of 1 2 OPERA TION INSTRUCTIONS Model: 920-0074 QWSER V ENERGY RECOVER Y VENTILA T O R WITH EXHAUST For Use With Bard 2 Through 5 T on 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[...]

  • Page 2

    Manual 2100-533A Page 2 of 1 2 CONTENTS Electrical S pecifications .............................. ............ 3 General Description of ERV ................................... 3 Control Requirements ............................................ 3 Recommended Control Sequences ....................... 4 Control Wiring .................................[...]

  • Page 3

    Manual 2100-533A Page 3 of 1 2 GENERAL DESCRIPTION The Energy Recovery Ventilator was designed to provide energy efficient, cost effective ventilation to meet I. A. Q. (Indoor Air Quality) requirements while still maintaining good indoor comfort and humidity control for a variety of applications such as schools, classrooms, lounges, conference room[...]

  • Page 4

    Manual 2100-533A Page 4 of 1 2 The ERV units are wired from the factory on medium intake and low exhaust speeds. The ERV is equipped with independently controlled 3-speed motor to provide the capability of adjusting the ventilation rates to the requirements of the specific application and to be able to provide positive pressure in the structure. Th[...]

  • Page 5

    Manual 2100-533A Page 5 of 1 2 PERFORMANCE AND APPLICATION DATA TABLE 2 SUMMER COOLING PERFORMANCE (INDOOR DESIGN CONDITIONS 75° DB / 62° WB) LEGEND VLT = Ventilation Load – Total HRT = Heat Recovery – Total VLS = Ventilation Load – Sensible HRS = Heat Recovery – Sensible VLL = Ventilation Load – Latent HRL = Heat Recovery – Latent t [...]

  • Page 6

    Manual 2100-533A Page 6 of 1 2 ENERGY RECOVERY VENTILATOR MAINTENANCE GENERAL INFORMATION The ability to clean exposed surfaces within air moving systems is an important design consideration for the maintenance of system performance and air quality. The need for periodic cleaning will be a function of operating schedule, climate, and contaminants i[...]

  • Page 7

    Manual 2100-533A Page 7 of 1 2 CLEANABILITY AND PERFORMANCE In order to maintain energy recovery ventilation systems, energy transfer surfaces must be accessible for washing to remove oils, grease, tars and dirt that can impede performance or generate odors. Washing of the desiccant surfaces is required to remove contaminate buildups that can reduc[...]

  • Page 8

    Manual 2100-533A Page 8 of 1 2 FIGURE 2 BELT REPLACEMENT INSTRUCTIONS Belt Replacement Instructions MIS-2166 Route (1) replacement belt in bottom groove of pulley. Route (1) replacement belt in top groove of pulley. If belts "squeak" or "chirp" lubricate lightly with LPS-1 or equivalent "dry film" lubricant.[...]

  • Page 9

    Manual 2100-533A Page 9 of 1 2 FIGURE 3 HUB ASSEMBLY WITH BALL BEARINGS[...]

  • Page 10

    Manual 2100-533A Page 10 of 1 2 2 1 3456789 1 0 1 1 1 2 2 1 3 208 120 V 480 240 COM 24 2 4 3 1 Contro l Relay Damper Motor 27 3 Motor 12 26 1 Cassett e Motor 25 Motor Pl ug Intake 28 28 28 26 CO2 Disconnect 2 25 25 25 25 28 23 28 23 23 26 26 21 3 4 5 6 7 8 9 10 11 26 Inta ke Damper 4 Blk/Red Black/White White Black (High Speed) Red (Low Speed) Capa[...]

  • Page 11

    Manual 2100-533A Page 11 of 1 2 FIGURE 4 DISCONNECT & TAPE OFF WIRE DISCONNECT AND TAPE OFF FOR CO2 CONTROLLED VENTILATION MIS -2759[...]

  • Page 12

    Manual 2100-533A Page 12 of 1 2 FIGURE 5 FIELD SET CO 2 SENSOR JUMPERS "AN" SET TO VOL TAGE "SW2 " SET TO ON "O U T" SE T T O 20- 100% AN OFF ON ON OFF 0-100% 20-100% VOLT AGE CURRENT OUT SW2 SW1 "SW1 " SET TO ON MIS-2756 QWSERV VENT PACKAG E CO 2 CONTR OLLER SETTIN G FOR 1000 PP M[...]