Carrier HRVCCLHU Installation, Start-up, And Operating Instructions Manual

Also see for HRVCCLHU: User's information manual Product data

Contents

Carrier HRVCCLHU Installation, Start-up, And Operating Instructions Manual Manual pdf 8 page image

WALL CONTROLIooo ]o oCONTROLFig. 12---Control ConnectionsA98410All electrical connections must comply with National and LocalElectrical Codes, or other ordinances that might apply.l'y_[R'_lyi[0]_lDo not use an extension cord as a power source for operatingthe HRV.Step 2--12-vdc WiringThe HRV circuit board, wall control, and accessories operate on12vdc. See Wall Control section, item Wiring and Fig. l I and 12for more information.ACCESSORIESStep l_nterlock RelayThe interlock relay kit, Part No. KVAAC0101FIR is requiredwhen installing HRV into a forced-air heating and cooling system.(See Fig. 13.) For additional information, refer to InstallationIustructions supplied with interlock relay kit.The purpose of interlock relay kit is to energize indoor systemequipment (furnace or fan coil) blower whenever HRV is calling.If HRV is energized, and indoor system equipment is not, interlockrelay will energize and make R and G at indoor equipment. Thiswill insure fresh air distribution throughout the building via thecentral duct system.Step 2--20 Minute TimerA push button timer can be used to override the wall control andput the HRV into high speed for 20 minutes. Connect switches inparallel and connect leads to HRV terminals 1, OC, and OL. (geeFig. 14.) Push button locations are ideal in special activity areas,such as, bathrooms or kitchen, where high-speed exhaust operationis needed for a short period of time.NOTE: The 20 minute timer will not function properly unlessHRV wall control is applied and working correctly. Timingfunction is internal to electronic circuit board, it is activated by amomentary contact between OC and OL. The 1 connection is toilluminate the push button. The maximum number of push buttontimers that can be applied is 5.Step 3--60 Minute Adjustable TimerA 60 minute adjustable timer can also be used to override wallcontrol and put HRV into high-speed operation for a select amountof time. Connect timer in parallel with push button timers, or toHRV terminals OC and OL. (See Fig. 14.)The 60 minute timer will provide a minimum of 30 minutes, anda maximum of 80 minutes of ventilation at high speed. Whenadjustable timer expires, an additional 20 minutes will remain as aresult of the internal timer of HRV electronic circuit board.8