Greenheck Fan ERVe manual

1 Model ERV e Energy Recovery Unit ® Installation, Operation and Maintenance Manual Please read and save these instructions. Read car efully before attempting to assemble, install, operate or maintain the product described. Pr otect yourself and others by observing all safety information. Failure to comply with instructions could result in persona[...]

2 Model ERV e Energy Recovery Unit Machined parts coated with rust preventive should be restor ed to good condition promptly if signs of rust occur . Immediately r emove the original rust preventive coating with petr oleum solvent and clean with lint-free cloths. Polish any r emaining rust from surface with crocus cloth or fine emery paper and oil.[...]

3 Model ERV e Energy Recovery Unit T able of Contents Basic Op eration . . . . . . . . . . . . . . 3 Inst allation Supplementa l Installation, Oper ation and Maint enan ce Man uals . . . . . . . . . . . 3 Installation Concerns . . . . . . . . . . . . 3 Lif ting with a Crane / Forklift . . . . . . . . . 4 Roof C urb a nd R ail M oun ti ng Recommende[...]

4 Model ERV e Energy Recovery Unit Lifting with a Crane 1. Before lifting, be sur e that all shipping material has been removed fr om unit. 2. T o assist in determining rigging requirements, weights are shown below . 3. Unit must be lifted by all corner lifting points provided on base structur e. 4. Rigger to use suitable mating hardwar e to attach[...]

5 Model ERV e Energy Recovery Unit 1 Fan Wheel Dia. 1 Fan Wheel Dia. R o t a t i o n R o t a t i o n R o t a t i o n R o t a t i o n Length of Straight Duct GOOD POOR GOOD POOR GOOD POOR Tu rning Vanes Tu rning Vanes SYSTEM EFFECT F ACTOR CURVES FPM X 100 OUTLET VELOCITY 0 5 10 15 20 25 30 35 40 45 1.2 1.0 0.8 0.6 0.4 0.2 0.0 S TA TIC PRESSURE LOSS[...]

6 Model ERV e Energy Recovery Unit Unit Size A B ERVE-20 5.75 18 ERVE-35 5.75 20.5 ERVE-45 6 22.5 ERVE-55 6 26 A B Isometric view of ERVe on rails Side view of ERVe on rails Unit Size A B ERVE-20 5.75 18 ERVE-35 5.75 20.5 ERVE-45 6 22.5 ERVE-55 6 26 A B Unit Size A B ERV e-20 5.75 18 ERV e-35 5.75 20.5 ERV e-45 6 22.5 ERV e-55 6 26 All dimensions a[...]

7 Model ERV e Energy Recovery Unit Dimensional Data Electrical Box 2-inch Filters 2-inch Filters Energy Wheel D A B E Outdoor Air Weatherhood Exhaust Air Weatherhood D CLEARANCE CLEARANCE CLEARANCE CLEARANCE C Electrical Box 2-inch Filters 2-inch Filters Energy Wheel Exhaust Air Weatherhood E Outdoor Air Weatherhood D C B A D CLEARANCE CLEARANCE SA[...]

8 Model ERV e Energy Recovery Unit Electrical Information The unit must be electrically grounded in accor dance with the current National Electrical Code, ANSI/NFP A 70. In Canada, use current CSA Standar d C22.1, Canadian Electrical Code, Part 1. In addition, the installer should be aware of any local or dinances or electrical company requir ement[...]

9 Model ERV e Energy Recovery Unit T ypical Control Center Components 1. Main Disconnect (non-fusible, lockable) 2. Motor Starter – Exhaust Air Fan 3. Motor Starter – Outdoor Air Fan 4. Motor Contactor – Energy Wheel 5. 24 V AC Control T ransformer 6. 24 V AC T erminal strip 7. Fuses for blower motors 1 234 7 5 Exploded Detail of Terminal Str[...]

10 Model ERV e Energy Recovery Unit Unit Accessories Outdoor Air W eatherhood Outdoor air weatherhood will be factory mounted. Exhaust W eatherhood The exhaust weatherhood is shipped separately as a kit with its own instructions. Dampers Backdraft dampers are always included as an integral part of the exhaust hood assemblies. Motorized outdoor air [...]

11 Model ERV e Energy Recovery Unit • After testing, set the Timer Scale as follows: T1 = 10 minutes, T2 = 1 hour • Set the Timer Settings as follows: T1 = 0.5, T2 = 0.5 The timer is now set for 5 minutes off and 30 minutes on. Remember to remove the jumper . Electric preheat fr ost control includes an [...]

12 Model ERV e Energy Recovery Unit Economizer Application/Operation The energy recovery wheel operation can be alter ed to take advantage of economizer operation (free cooling). T wo modes are available: 1. De-energizing the wheel 2. Modulating the wheel A field supplied call for cool (Y1) is requir ed. De-energizing the wheel is accomplished with[...]

13 Model ERV e Energy Recovery Unit Factory Set Points V ariable Frequency Drives (VFDs) for the blowers are factory setup to operate in one of the three following modes: Modulating: 0-10 VDC signal wired in the field by others varies the speed of the blower between 30 and 60Hz Multispeed: Digital contact closures by others command the VFD to run a[...]

14 Model ERV e Energy Recovery Unit Parameter Setting –J1000 A1-01 Access Level 2 b1-17 VFD Auto Start 1 C6-02 Carrier Frequency 2 d2-01 Ref Upper Limit 40% or 50%* d2-02 Ref Lower Limit 5% E2-01 Motor Rated FLA Motor FLA E2-03 Motor No-Load Current Must be less than FLA H1-02 Multi-Function Input (T erminal S2) 6 H2-01 Multi-Function Outpu[...]

15 Model ERV e Energy Recovery Unit FA CTORY SUPPLIED AND WIRED G MUL TI-VOL TA GE PRIMARY 24 SECONDARY TR1 C FU5 TO UNIT MAIN POWER L3 L2 L1 DS1 SUPPL Y DAMPER D2 ENERGY WHEEL R1 R TR1 SO SR 3 FR FC 2-10V - + 1 TR 5 4 2 SR+ RETURN AIR SENSOR MIXED AIR SENSOR T T1 620 OHM RESISTOR OR OUTDOOR AIR SENSOR SO+ 4 S1 VFD-W L3 3 4 SC L2 L1 MC T3 MA T2 T1 [...]

16 Model ERV e Energy Recovery Unit Rotation Sensor The rotation sensor monitors energy r ecovery wheel rotation. If the wheel should stop r otating, the sensor will close a set of contacts in the unit control center . Field wiring of a light (or other alarm) between terminals R & 12 in the unit control center will notify maintenance personnel [...]

17 Model ERV e Energy Recovery Unit Remote Control Panel and W iring Schematics Indicator Lights powered by the ER Unit Dirty Filter Indicator (power by others) Refer to Pressure Switch for voltage and load ratings. 7-Day Timer or On/Off Switch G C R 7-Day Timer S1 - Unit On/Off T erminal Block in Unit Control Center For 7-Day Timer , use blue and [...]

18 Model ERV e Energy Recovery Unit T emperature Sensors - 1K Ohm RTD Drawing Labels T erminal Strip Labels OAI OA/Supply Inlet T emp OAAW OA After Wheel RAI RA/Exhaust Inlet T emp OAD Supply Discharge T emp E AW Exhaust After Wheel T emp Pressur e Sensors (analog or digital) Drawing Labels T erminal Strip Labels OAF-P OA/Supply Filter Pressur e OA[...]

19 Model ERV e Energy Recovery Unit Start-Up o Rotate the fan wheels and energy recovery wheels by hand and ensure no parts ar e rubbing. If rubbing occurs, refer to Start-Up section for mor e information. o Check the fan belt drives for proper alignment and tension (refer to Start-Up section for mor e information). o Filters can load up with dirt [...]

20 Model ERV e Energy Recovery Unit Provided with Unit? Frost Contr ol Application / Operation section: Setting Factory Default Ye s No Frost Contr ol set point 5ºF Differ ential 2ºF Timer Refer to IOM Ye s No Frost Contr ol Modulating Refer to IOM Economizer Application / Operation section: Ye s No Economizer (temperature) Set point 65ºF Offset[...]

21 Model ERV e Energy Recovery Unit Unit Start-Up Refer to Parts List section for component locations. Fans The ERV e models contain two forward curved (supply & exhaust) fans. These forward curved fans should be checked for free r otation. If any binding occurs, check for concealed damage and foreign objects in the fan housing. Be sure to chec[...]

22 Model ERV e Energy Recovery Unit Vibration Excessive vibration may be experienced during initial start-up. Left unchecked, excessive vibration can cause a multitude of problems, including structural and/or component failure. The most common sour ces of vibration are listed. Many of these conditions can be discovered by careful observation. Refer[...]

23 Model ERV e Energy Recovery Unit Dampers Check all dampers to ensure they open and close properly and without binding. Backdraft dampers can be checked by hand to determine if blades open and close freely . Apply power to motorized dampers to ensure the actuator opens and closes the damper as designed. Fan Belts Belts must be checked on a regula[...]

24 Model ERV e Energy Recovery Unit Fan Wheel & Fasteners Wheels requir e very little attention when moving clean air . Occasionally oil and dust may accumulate on the wheel causing imbalance. When this occurs the wheel and housing should be cleaned to assure smooth and safe operation. Inspect fan impeller and housing for fatigue, corrosion or [...]

25 Model ERV e Energy Recovery Unit Accessing the Energy Recovery Wheel Disconnect power to the ERV e. Open door labeled “Energy Wheel Cassette Access”. Unplug the wheel drive motor . Pull the wheel cassette halfway out. Energy Recovery Wheel Maintenance Annual inspection of the energy recovery wheel is recommended. Units ventilating smoking lo[...]

26 Model ERV e Energy Recovery Unit Parts List 1. Supply blower  • Forwardcurved fan  • Adjustable motor mount for belt tensioning  • Adjustable sheaves for speed control Not depicted on this image 2. Vibrations isolators (quantity 4 per blower)  • Neoprene 3. Energy recovery wheel ca[...]

27 Model ERV e Energy Recovery Unit T roubleshooting – Airflow T est and Balance Report The T est and Balance Report (T AB) is utilized to determine whether the appropriate amount of outdoor air and exhaust air is being supplied and removed fr om a building, respectively . There are no set rules on what information must be included in a T AB rep[...]

28 Model ERV e Energy Recovery Unit Always have a completed Pre Start-Up Checklist, unit Start-Up Checklist, and Optional Accessories Checklist prior to requesting parts or service information. Symptom Possible Cause Corrective Action Blower fails to operate Blown fuse or open circuit br eaker . Replace fuse or reset cir cuit breaker and check amps[...]

29 Model ERV e Energy Recovery Unit T roubleshooting – Unit Always have a completed Pre Start-Up Checklist, unit Start-Up Checklist, and Optional Accessories Checklist prior to requesting parts or service information. Symptom Possible Cause Corrective Action One or both blowers turn off intermittently and back on after about 2 minutes Exhaust Onl[...]

30 Model ERV e Energy Recovery Unit Maintenance Log Date __________________ Time _____________ AM/PM Notes:___________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________[...]

31 Model ERV e Energy Recovery Unit Maintenance Log Date __________________ Time _____________ AM/PM Notes:___________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________[...]

32 Greenheck warrants this equipment to be fr ee from defects in material and workmanship for a period of one year fr om the shipment date. The energy recovery wheel is warranted to be fr ee from defects in material and workmanship for a period of five years from the shipment date. Any units or parts which pr ove defective during the warranty peri[...]