Carrier HRVCCLHA Installation Instructions Manual

Also see for HRVCCLHA: Owner's information manual Owner's manual Product data

Contents

7Cooling:AUTO -- the ventilator selects the speed based on indoor humidityand outdoor temperature. It may cycle on/off every 30 minutesdepending on humidity and outside temperature.LOW -- low speed all of the time.HIGH -- high speed all of the time.If the fan speed is set to Auto and the ventilator wants to run, thefan speed will run at High continuous speed. Otherwise, the fanwill stay at the chosen continuous fan speed.WiringRemove top cover assembly from wall control and pass thermostatwire through hole located on back of control before attaching towall. Connect Y, R, G, and B (yellow, red, green and black)between wall control and HRV circuit board. Following color code(see Fig. 13 and 14). Replace top cover assembly.NOTE: HRV wall control and circuit board operate on 12vdc.YELLOWY R GBREDGREENBLACKA98383Fig. 13 -- Typical Wall Control% D’HUMIDITE RELATIVE HUMIDITY’% HUM. RELATIVE HUM.55%45%35%30%EXT. TEMP. EXT.MODEMAINTENANCEAIR EXCHANGEECHANGE D’AIR’202530405060708010oC/50 oF0oC/32 oF–10 oC/14 oF–20 oC/– 4o FCONTROLCONNECTORWALL CONTROLYELLOWREDGREENBLACKA98410Fig. 14 -- Control ConnectionsHumidity SelectorThe humidity selector is a built--in dehumidistat designed toproperly control the level of humidity in the house during thewinter months. This control helps avoid condensation problems inupper northern regions where indoor humidity is a problem duringthe winter season.NOTE: This control is not to be confused with a dehumidistatused during the summer months to control high relative indoorhumidity.Table 5 recommends humidity levels to avoid condensation.Table 5 – Recommended Humidity LevelsOUTSIDETEMPERATUREDOUBLE ---PANEWINDOWSTRIPLE ---PANEWINDOWS50°F / 10°C 55% 65%32°F / 0°C 45% 55%14°F / --- 10°C 35% 45%--- 4°F / --- 20°C 30% 45%--- 22°F / --- 30°C 25% 35%ELECTRICAL CONNECTIONS115--VAC WiringThe HRV operates on 115VAC. It comes with a power cordattached to unit and ready to plug into a fused outlet. Unit must begrounded for proper operation.All electrical connections must comply with National and LocalElectrical Codes, or other ordinances that might apply.ELECTRICAL SHOCK / FIRE HAZARDFailure to follow this warning could result in property or unitdamage.Do not use an extension cord as a power source for operatingthe HRV.! WARNING12--vdc WiringThe HRV circuit board, wall control, and accessories operate on12vdc. See Wall Control section, item Wiring and Figures 13 and14 for more information.ACCESSORIESNOTE: Interlock relay is now integrated into the control.The purpose of interlock relay is to energize indoor systemequipment (furnace or fan coil) blower whenever HRV is calling. IfHRV is energized, and indoor system equipment is not, interlockrelay will energize and make R and G at indoor equipment. Thiswill ensure fresh air distribution throughout the building via thecentral duct system.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 I, OC, and OL (seeFig. 14). Push button locations are ideal in special activity areas,such as, bathroom, 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 I connection is toilluminate the push button. The maximum number of push buttontimers that can be applied is 5.60 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 10 minutes, and amaximum of 60 minutes of ventilation at high speed.HRV