Bard QERV-A4B manual

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Table of contents for the manual

  • Page 1

    OPERA TION INSTRUCTIONS Model: QER V -A4B QER V2-A4B ENERGY RECOVER Y VENTILA T OR WITH EXHAUST For Use W ith Bard 2 Through 5 T on QH Series Heat Pump s BARD MANUFACTURING COMPANY Bryan, Ohio 43506 Since 1914...Moving ahead, just as planned. Manual: 2100-310D Supersedes: 2100-310C File: Volume II, Tab 14 Date: 01-10-05[...]

  • Page 2

    CONTENTS QERV Model Nomenclature ................................... 1 Electrical S pecifications .......................................... 1 General Description of QER V ................................ 1 Control Requirements ............................................ 1 Recommended Control Sequences ....................... 2 V entilation Air Fl[...]

  • Page 3

    Manual 2100-310D Page 1 MODEL NOMENCLATURE 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, con[...]

  • Page 4

    Manual 2100-310D Page 2 The units are wired from the factory on low speed. The speed can be changed by switching the toggle switch on the front of the QERV to the desired speed. The QERV2-A4B is equipped with independently controlled 3-speed motor to provide the capability of adjusting the ventilation rates to the requirements of the specific appli[...]

  • Page 5

    Manual 2100-310D Page 3 PERFORMANCE AND APPLICATION DATA TABLE 2 SUMMER COOLING PERFORMANCE (INDOOR DESIGN CONDITIONS 75° DB / 62° WB) LEGEND VTL = Ventilation Load – Total HRT = Heat Recovery – Total VLS = Ventilation Load – Sensible HRS = Heat Recovery – Sensible VLL = Ventilation Load – Latent HRL = Heat Recovery – Latent t n e i b[...]

  • Page 6

    Manual 2100-310D Page 4 NOTE : Sensible performance only is shown for winter application. LEGEND WVL = Winter Ventilation Load WH = Winter Heat Recovery TABLE 3 WINTER HEATING PERFORMANCE (INDOOR DESIGN CONDITIONS 70° F DB) t n e i b m A . D . OE T A R N O I T A L I T N E V B D F s e e r g e D . f f E % 0 8 M F C 0 5 4. f f E % 1 8 M F C 5 7 3. f [...]

  • Page 7

    Manual 2100-310D Page 5 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 reduce adsor[...]

  • Page 8

    Manual 2100-310D Page 6 FIGURE 1 BELT REPLACEMENT INSTRUCTIONS Belt Replacement Instructions MIS-1890 Route this part of replacement belt in bottom groove of pulley. Route this part of replacement belt in top groove of pulley. If belt "squeaks" or "chirps" lubricate lightly with LPS-1 or equivalent "dry film" lubricant[...]

  • Page 9

    Manual 2100-310D Page 7 FIGURE 2 HUB ASSEMBLY WITH BALL BEARINGS[...]