Fantech VER200 Installation Manual

8fantech* Ductwork layout may differ depend-ing on modelDIRECT CONNECTION of the ERV SUPPLY AIR STREAM to the SUPPLY AIR SIDE on theFURNACE & EXHAUST AIR STREAM to the FURNACE COLD AIR RETURNSIMPLIFIED INSTALLATION (GOOD)OPTION 21. Furnace blower must operate when ventilation from ERV is required. Thefurnace should be set to run continuously or interlocked with ERV. Seefurnace electrical connection on page 17.2. Due to the differences in pressure between the ERV and the equipment it isbeing connected to, the ERV‘s airflow must be balanced on site, using theprocedure found section "AIRFLOW BALANCING".* In the case of a multi-zone system, please contact Fantech customerservice prior to installing any installation type requiring the use of thefurnace interlock"Installation examples (Cont'd)In the case of a simplifiedinstallation, Option 1 isrecommended.Air from inside* Unit air flow should be balanced while ERV is on "Normal" speed andfurnace blower is running.OutsideFresh air to living areas1 m (3' 3") min. recommendedCold airreturnERV/Furnace ducting for Simplified Installation - Option 2Suggested installation for:• When bathroom andkitchen already have localexhaust system• May be suitable forretrofittingBenefits: Least expensiveinstallation typeFantech energy recovery ventilators (ERV) that use a supply fan shutdown for frostprevention do not include an outdoor air motorized damper. If you are using a simplifiedinstallation, i.e. connecting the ERV supply air duct to a furnace's return air duct, the ERVmust operate continuously. When the ERV is turned off, no warm exhaust air will flowthrough the ERV but the furnace's fan will continue to draw in outdoor air directly into thefurnace. If it's cold outside, cold air will be introduced, without re-heating, directly intothe furnace.If the ERV is installed such that the homeowner may turn off the ERV during the winter, werecommend installing a motorized damper between the ERV's supply air and the furnace'sreturn air duct that closes when the ERV is not operating. See wiring diagram (figure 1).DamperMotor24 VAC TransformerCOM NOERV Furnace interlockSee page 17.24V120VFigure 1*Transformer and Damper motor not includedMotorizedDamperMotorizedDamperStale air tooutsideFresh air fromoutside