Greenheck PVE-35 - Manuals

5 Model PV e Heat Recovery Unit When installed on a roof, a typical installation will include at least one roof penetration in order to deliver return air to the unit from the space. Additionally, a second roof penetration may be used for supply air discharge to the space. Roof Curb and Rail Mountin...

6 Model PV e Heat Recovery Unit Roof Curb Mounting Roof curb assembly and mounting instructions are contained in the Roof Curb Assembly Instructions supplied with Model GKD roof curb.Rooftop PVe units require curbs to be mounted first, in accordance with their appropriate instructions. Curb unit is ...

7 Model PV e Heat Recovery Unit Isometric view of PVe on rails Side view of PVe on rails Unit Size A B* C* D PVe-20 5 14 13.25 7.75 PVe-35 5 14 12.00 6.50 PVe-45 5 14 15.50 10.5 PVe-55 5 14 18.75 13.25 All dimensions are shown in inches.*Zones B and C identify regions/zones where rails may not be pl...

8 Model PV e Heat Recovery Unit Dimensional Data Drain Trap Unit Size A B C D E PVe-20 104.1 (2650) 59.7 (1520) 41.5 (1060) 20.3 (520) 20.7 (530) PVe-35 104.1 (2650) 59.7 (1520) 49.2 (1250) 25.2 (640) 17.7 (450) PVe-45 110.6 (2810) 59.7 (1520) 61.1 (1560) 25.2 (640) 19.0 (490) PVe-55 116.5 (2959) 59...

9 Model PV e Heat Recovery Unit Electrical Information The unit must be electrically grounded in accordance with the current National Electrical Code, ANSI/NFPA 70. In Canada, use current CSA Standard C22.1, Canadian Electrical Code, Part 1. In addition, the installer should be aware of and comply w...

10 Model PV e Heat Recovery Unit Typical Control Center Components 1. Main Disconnect (non-fusible, lockable) 2. Motor Starter 3. Motor Starter 4. Power Distribution Blocks 5. 24 VAC Control Transformer 6. 24 VAC Terminal Strip 7. Temperature Sensor with Override (used for Economizer Mode) 8. Dirty ...

11 Model PV e Heat Recovery Unit Frost Control Application/Operation Cold climates, in combination with higher indoor humidity levels, may cause frost to form on the plate heat exchanger. To protect against the formation of frost, a temperature sensor is installed to measure the temperature of the a...

12 Model PV e Heat Recovery Unit Factory Set Points Variable 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 conta...

13 Model PV e Heat Recovery Unit MODULATING CONTROL FOR FAN SPEED (0-10 VDC) Parameter Setting V1000 J1000 A1-01 Access Level 2 2 b1-17 VFD Start-Up Setting 1 1 C1-01 Acceleration Time 30 sec. 30 sec. C1-02 Deceleration Time 30 sec. 30 sec. C6-02 Carrier Frequency 1 1 d2-02 Ref Lower Limit 50% 50% E...

14 Model PV e Heat Recovery Unit Typical Wiring Diagram Following is an example of a typical wiring diagram for the PVe. It is representative of circuitry that may be found in any PVe unit, but it is not intended to be unit-specific. Each PVe unit has a detailed wiring diagram located within the con...

15 Model PV e Heat Recovery Unit Dirty Filter Sensor Dirty filter sensors monitor pressure drop across the outdoor air filters, exhaust air filters or both. If the pressure drop across the filters exceeds the set point, the sensor will close a set of contacts in the unit control center. Field wiring...

16 Model PV e Heat Recovery Unit Remote Control Panel and Wiring 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 Terminal Block in Unit C...

17 Model PV e Heat Recovery Unit Temperature Sensors - 1K Ohm RTD Drawing Labels Terminal Strip Labels OAI OA/Supply Inlet Temp OAAP OA After Plate Temp RAI RA/Exhaust Inlet Temp EAP Exhaust After Plate Temp OAD Supply Discharge Temp Pressure Sensors (analog or digital) Drawing Labels Terminal Strip...

18 Model PV e Heat Recovery Unit Start-Up o Rotate the fan wheels by hand and ensure no parts are rubbing. If rubbing occurs, refer to Start-Up section for more information. o Check the fan belt drives for proper alignment and tension (refer to Start-Up section for more information). o Filters can l...

19 Model PV e Heat Recovery Unit Provided with Unit? Frost Control Application / Operation section: Setting Factory Default Yes No Frost Control set point 35ºF Differential 2ºF Timer Refer to IOM Yes No Frost Control Modulating Refer to IOM Economizer Application / Operation section: Yes No Economiz...

20 Model PV e Heat Recovery Unit Unit Start-Up Refer to Parts List section for component locations. Fans The PVe models contain two forward curved (supply & exhaust) fans. These forward curved fans should be checked for free rotation. If any binding occurs, check for concealed damage and foreign...

21 Model PV e Heat 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 sources of vibration are listed.Many of these conditions ca...

22 Model PV e Heat Recovery Unit Maintenance Overview The Greenheck PVe Heat Recovery Ventilator is quite simply an interface unit that takes in outdoor air and either heats or cools that air and then delivers that air into the building HVAC system for further heating or cooling. The heating and coo...

23 Model PV e Heat Recovery Unit Fan Belts Belts must be checked on a regular basis for wear, tension, alignment, and dirt accumulation. Premature or frequent belt failures can be caused by improper belt tension (either too loose or too tight) or misaligned sheaves. Abnormally high belt tension or d...

24 Model PV e Heat Recovery Unit Fan Wheel & Fasteners Wheels require 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 im...

25 Model PV e Heat Recovery Unit Parts List 1. Supply blower • Forward curved fan • Adjustable motor mount for belt tensioning • Adjustable sheaves for speed control 2. Vibration isolators (quantity 4 per blower) • Neoprene 3. Aluminum plate heat exchanger 4. Supply weatherhood with 2-inch aluminum ...

26 Model PV e Heat Recovery Unit Troubleshooting – Airflow Test and Balance Report The Test and Balance Report (TAB) is utilized to determine whether the appropriate amount of outdoor air and exhaust air is being supplied and removed from a building, respectively. There are no set rules on what info...

27 Model PV e Heat 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 breaker. Replace ...

29 Model PV e Heat Recovery Unit Maintenance Log Date __________________ Time _____________ AM/PMNotes:_____________________________________________________________________________________________________________________________________________________________________________________________________...

32 Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the shipment date. Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our factory, transportation prepaid. Motors ar...