20LCi and w20LCi Heat and Energy Recovery Ventilators Installation, Operation and Service Instructions VB0036 HRV 20LCi VB0037 ERV w20LCi 09/00 04629
Contents 1 Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Installation 3.1 Check Equipment . . . . . . . . . . . . 3.2 Mount Unit . . . . . . . . . . . . . . . . . 3.3 Ductwork Information . . . . . . . . . 3.4 Install Drain Line For Condensate 3.5 Systems Integration . . . . . . . . . . 3.6 Make Electrical Connections . . . . . . . . . .
1 Safety Considerations 3 Installation Hazards may exist within this equipment because it contains electrical and powerful moving components. Only qualified service personnel should install or service this equipment. Untrained personnel can perform basic maintenance such as maintaining filters. Observe precautions marked in literature and on labels attached to the unit. Follow all safety codes. WARNING Disconnect main power switches to unit before performing service or maintenance.
3.2 Mount Unit Location Maintain clearance around and above the unit to provide proper airflow and service access. The fresh air intake hood must be positioned away from sources of contamination such as chimneys, exhaust vents, etc. Positioning the fresh air intake opposite to the prevailing winds will reduce entry of snow or moisture during periods of high winds.
3.4 Install Drain Line For Condensate (For HRV 20LCi unit only) 48644 POWER CONTROL BOARD 6 9 3/4“ NPT Diameter Drain 1 4 7 N/C Unit Insulation Sikaflex Seal N/O J1 3 2 1 COMM. This unit requires a drain line because condensate occurs during heating seasons. The 3/4" NPT (19mm) drain connections are located at the bottom of the unit. Make sure that the drain connection is tight before installing the unit. This unit must have an external trap for the condensate drainage.
3.6 Make Electrical Connections WARNING Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. Failure to follow this warning could result in the installer being liable for the personal injury of others. Elecrical requirements Location of wire connections required are shown in Appendix D and E. Units are available in 208/230 volts, 1 phase. Please see Appendix C for electrical data.
Unit check points: ___ Power connected, no ventilation call - Both fans are off, defrost damper (if equipped) closes off fresh air from outside. ___ Power connected, low speed call (if equipped) Both fans on low speed, defrost damper closes (if equipped) recirculation opening. If unit is single speed, it will come on that speed on a call for low or high. ___ Power connected, high speed call. Both fans on high speed, defrost damper (if equipped) closes recirculation opening.
ERV Exhaust Filter Service (w20LCi) To remove the exhaust filters in the ERV w20LCi, remove the screw holding the filter access door and slide the exhaust filter access door down to the bottom of the unit. The filters are set in frames and can be removed by pulling on the filter tabs and sliding them forward and out of the unit. First, the right filter must be removed, then the left filter must slide over to where the right filter was, then pull it forward and out of the unit as shown below.
5.3 Testing And Replacement Of The Damper Actuator (ERV only) After disconnecting the power from the unit, determine if the damper is defective. Disconnect the 24V power source. Connect the actuator directly to a 24V power source with an appropriate cable. If the damper operates correctly, the problem is either in the wiring connections or main circuit board. If the damper does not work, it must be replaced. Take out the two mounting screws to remove the assembly.
To access the cassette drive area, loosen the left side 1/4" x 3/4" (6 x 19mm) socket head cap screws and remove the bottom left cassette panel by prying it up and away from the Velcro tabs. Drive Motor Harness To remove the drive pulley, gently slide the drive belt up and off of the pulley, being careful not to kink the belt in any way. Loosen the pulley set screw and slide the pulley off of the drive motor shaft.
Appendix A Equipment Data Shipping weight Net weight Shipping dimensions lxwxh Openings location size w x h - supply inlet - exhaust outlet Fans (standard) Supply impeller (fwd centrifugal) high speed motor HRV 20LCi 750 lbs (341 kg) 700 lbs (318 kg) 94" x 52" x 36" 2388 x 1321 x 914mm ERV w20LCi 725 lbs (330 kg) 700 lbs (318 kg) 94" x 52" x 36" 2388 x 1321 x 914mm ends of unit ends of unit 12" x 26" (305 x 660mm) 10" x 14" (254 x 356mm) 12" x 26" (305 x 660mm) 10" x 14" (254 x 356mm) 12.75" dia x 7.
Appendix B Typical Installation and Minimum Distance Requirements SUPPLY TO SPAC E TSIDE ST OU EXHAU Balancing Damper Flow Measuring Station 2 D F T MIN Backdraft Damper 5 D F T MIN STRAI TO AC GHT DUCT S SEE S HIEVE GOOD ECTION RE ECTIO Q N 3.3 AIR FLOW UIRED RATES . EXHAUST FROM SPACE m minimu cf in. TO QUIRED RE E NC CLEARA COMPONENTS REMOVE TENANCE FOR MAIN FROM INTAKE E OUTSID ALL C WITH ONNECTIONS MINIM SUPPL FLEXIBLE C MADE 8 ft.
Page 13 14.000" SUPPLY AIR [356] OPENING A VK0035A 10.000" [254] 7.625" [194] 10.000" [254] 6.000" [152] 7.625" [194] C 4.500" [114] 5.250" [133] LEFT SIDE EXHAUST AIR OPENING 4.500" [114] D 12.750" [324] 14.000" [356] 6.000" [152] B 36.500" [927] 85.000" [2159] 88.500" [2248] E D FRONT 48.500" [1232] 26.000" [660] 30.000" [762] FILTER ACCESS PANEL 23.250" [591] 26.000" [660] PLATE HEAT EXCHANGER 4.000" [102] 12.000" [305] Low voltage connection D 26.
Page 14 VK0036A 12.750" [324] 14.000" [356] 14.000" [356] 13.251" [337] 10.000" [254] SUPPLY AIR OPENING 5.380" [137] LEFT SIDE 7.625" [194] EXHAUST AIR OPENING 10.000" [254] 10.750" [273] 2.000" [51] 7.625" [194] 5.250" [133] LOW VOLTAGE CONNECTION 4.000" [102] A SUPPLY AIR TO BUILDING EXHAUST AIR TO OUTSIDE C A EXHAUST FAN ACCESS PANEL FRONT CASSETTE, FILTER ACCESS PANEL 48.500" [1232] 12.000" [305] 2.845" [72] ENERGY RECOVERY MODULE 48.000" [1219] B 3.500" [89] 1.
Appendix F Airflow Performances HRV 20LCi Fan Performance - Supply (in. wg.) Airflow 0.0 (cfm) RPM BHP 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 1020 1050 1090 1125 1150 1210 1225 1.03 1.15 1.29 1.43 1.58 1.73 1.89 0.2 RPM BHP 1050 1075 1100 1150 1175 1210 1250 1.07 1.20 1.33 1.47 1.62 1.78 1.94 0.4 RPM BHP 1075 1100 1125 1175 1200 1230 1275 1.10 1.23 1.37 1.51 1.66 1.82 1.98 0.6 RPM BHP 1100 1150 1175 1200 1225 1250 1.13 1.25 1.39 1.53 1.69 1.84 0.
Appendix H Terminal Control Diagrams H-1: Wall Control Connection H-2: Occupied Timer/Sensor Connection Two types of remote wall controls are available: 1. Venta or Basic with fan switch and dehumidistat control 2. Supra or Electro with fan mode selection, dehumidistat control, and maintenance indicator The remote wall controls work with the integrated electronic controls within the unit to control ventilation sequences.
Appendix H Continued Terminal Control Diagrams H-3: Remote Fan Control H-4: Unocupied Recirc. Contacts Remote fan control can be achieved by connecting dry contact controls to the terminal interface at terminals labeled: LOW - COM - HIGH (Not all units have 2 speeds). Placing a jumper across the 'LOW' and 'COM' terminals will put the unit in low speed ventilation or placing a jumper across the 'HIGH' and 'COM' terminals will put the unit into high speed. DO NOT jumper all three terminals together.
T4 1 W/Y 3 1 W/Y G BK/Y G T4 1 VOLTAGE Page 18 230 / 1 / 60 VE0031A WHEEL DRIVE MOTOR INHERENT PROTECTION BUILT IN 208/ 230/ 1/ 60 1.5 or 2 HP INHERENT PROTECTION BUILT IN 208/ 230/ 1/ 60 1.5 or 2 HP INHERENT PROTECTION BUILT IN 208/ 230/ 1/ 60 1.5 or 2 HP SUPPLY MOTOR EXHAUST MOTOR 120V PRIM, 24V SEC, 40VA 0.
R/Y R/Y BK/Y W/Y NO 2 R T5 Page 19 WHEEL DRIVE MOTOR EXHAUST MOTOR INHERENT PROTECTION BUILT IN 208/ 230/ 1/ 60 1.5 or 2 HP INHERENT PROTECTION BUILT IN 208/ 230/ 1/ 60 1.5 or 2 HP INHERENT PROTECTION BUILT IN 208/ 230/ 1/ 60 1.5 or 2 HP SUPPLY MOTOR 0.
T4 1 W/Y 2 3 BK/Y G C W T5 G 5 COM 6 Page 20 WHEEL DRIVE MOTOR EXHAUST MOTOR SUPPLY MOTOR CONTACTOR C2 INHERENT PROTECTION BUILT IN 208/ 230/ 1/ 60 1.5 or 2 HP INHERENT PROTECTION BUILT IN 208/ 230/ 1/ 60 1.5 or 2 HP INHERENT PROTECTION BUILT IN C NO 9 6 J1 4 J1 9 #18 AWG WIRE #14 AWG WIRE #12 AWG WIRE POWER LINE ANY V / 3 / 60 115 VOLT LOW VOLTAGE 120VAC COIL, DPDT 1/2HP, 240VAC 120VAC COIL, DPST 3HP, 240VAC 24VAC COIL, TPDT 10A, 240VAC 0.
R/Y R/Y BK/Y 3 W/Y G NO 2 Page 21 T5 230 / 1 / 60 G WHEEL DRIVE MOTOR EXHAUST MOTOR SUPPLY MOTOR CONTACTOR C2 W C C INHERENT PROTECTION BUILT IN 208/ 230/ 1/ 60 1.5 or 2 HP INHERENT PROTECTION BUILT IN 208/ 230/ 1/ 60 1.
Appendix J Trouble Shooting Chart Problem Cause Solution Unit will not turn on. Occupied timer contacts open. Check external wiring. Check the wiring in the control box. Check the control board for power. Unit will not turn off. External terminal strip wiring. Check if high or low speed control contacts are closed on the terminal strip. Air from supply diffusers too cold. Imbalance of supply and exhaust air. Check filters and heat exchanger for blockage. Check balance of airflows.
