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Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble, install,
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure
to comply with these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.
General Safety Information
WARNING
The roof lining contains high voltage wiring. To prevent
electrocution, do not puncture the interior or exterior
panels of the roof.
WARNING
For A2L appliance only. LEAK DETECTION SYSTEM
installed. Unit must be powered except for service.
WARNING
This unit is equipped with electrically powered safety
measures. To be effective, the unit must be electrically
powered at all times after installation, other than when
servicing.
WARNING
Do not use means to accelerate the defrosting
process or to clean, other than those recommended
by the manufacturer.
The appliance shall be stored in a room without
continuously operating ignition sources (for example:
open flames, an operating gas appliance or an
operating electric heater.
Do not pierce or burn.
Be aware that refrigerants may not contain an odor.
®
Dedicated Outdoor Air Unit
Technical Support
Call: 1-866-478-2574
Email: DOAS@greenheck.com
DANGER
• Always disconnect power before working on or near
this equipment. Lock and tag the disconnect switch
or breaker to prevent accidental power up.
• If this unit is equipped with optional gas accessories,
turn off gas supply whenever power is disconnected.
CAUTION
This unit is equipped with a compressed refrigerant
system. If a leak in the system should occur,
immediately evacuate the area. An EPA Certified
Technician must be engaged to make repairs or
corrections. Refrigerant leaks may also cause bodily
harm.
CAUTION
When servicing the unit, the internal components may
be hot enough to cause pain or injury. Allow time for
cooling before servicing.
Scan to complete your
Start-up Report
, to ensure
your equipment is fully covered
under the Greenheck warranty.
Document 486913
Model RV / RVE / RVC
Dedicated Outdoor Air Unit
1
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Summary of Contents for Greenheck RV Series
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Page 1: General Safety Information
Start-up Report , to ensure operating electric heater. your equipment is fully covered Do not pierce or burn. under the Greenheck warranty. Be aware that refrigerants may not contain an odor. Dedicated Outdoor Air Unit ®... - Page 2 General Safety Information This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by the person responsible for their safety.
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Page 3: Table Of Contents
Table of Contents General Safety Information ..... . 1 Receiving, Handling, Storage ....4 Product Overview . -
Page 4: Receiving, Handling, Storage
Receiving temperature. Leave coverings loose to permit air WARNING circulation and to allow for periodic inspection. The storage of the appliance should be in accordance The unit should be stored at least 3½ in. (89 mm) off with the applicable regulations or instructions, the floor. -
Page 5: Product Overview
Product Overview A horizontally configured High Percentage Outdoor Models and Capacities Air unit designed for installation either indoors or Model Cooling Capacity outdoors. Each unit has multiple options for cooling and/or heating. The unit is designed to replace air that 3 to 7 tons RV-10 is exhausted from the building and also heat and cool,... -
Page 6: Subassemblies
Subassemblies Blower Packaged DX System Either one, two, or three plenum-type fans. All units are Any unit may be ordered with a packaged DX system. equipped with a plenum fan for Supply Air and a second Housing size 10/20 will use one compressor; housing may be selected for Exhaust (Relief) Air. - Page 7 Subassemblies RV AND RVE Low Sound Condenser Fans Energy Wheel (RVE) Outdoor Air Filters (pre-wheel) Condenser Coils Weatherhood Filters (optional) (metal mesh) Outdoor Air Damper Packaged DX Plenum-Type Compressors Exhaust Air Blower (optional) Recirculating Damper Furnace Vest Plate Coils Plenum-Type (optional) Supply Air Blower Furnace Control Center...
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Page 8: Installation
Installation Typical Unit Weights and Dimensions Housing size 10/20 Housing size 25/35/40 and 45/65/85 Housing size 75/150 Component Access Optional Inverter Compressor VFD Optional Compressor/Electrical Optional Gas Furnace/Optional Electric Heater Electrical Supply Blower Coil Filters Exhaust Blower/Optional Electric Preheat Powered Exhaust Blower Section * When a powered exhaust fan (or RVE/RVC) is selected, door 8 will be to the immediate right of door 7. - Page 9 Installation Typical Unit Weights and Dimensions Nominal Condensing Length Intake Nominal Outdoor Supply Return Exhaust Model tonnage Height (H) Width (W) Section weight (lbs) Intake Discharge Intake Discharge (tons) Bottom RV-10 58.1 44.0 82.2 22.3 1,225 or End RV-25 5-15 59.3 52.5 98.6...
- Page 10 Installation Service Clearances NA from CS CONDENSING SECTION NA from Unit EXHAUST AIR WEATHERHOOD ACCESS DOOR OUTDOOR AIR WEATHERHOOD SUPPLY FAN EXHAUST FAN CONTROL CENTER ACS SIDE Control Cabinet End Outdoor Air Intake from from Piping Indoor Model Access from Unit Condensing Vestibule Mounted...
- Page 11 Installation Refrigeration Minimum Room Installation Requirements and Airflow Requirements Where minimum room areas, minimum airflows and conditioned space areas are defined, Table A can WARNING be utilized to verify installation accordance with the For appliances using A2L refrigerants connected via releasable charge within a unit.
- Page 12 Installation Table A Table A Minimum Airflow and Room Areas Minimum Airflow and Room Areas R-454B R-454B Minimum Total Minimum Total Releasable Minimun Airflow Releasable Minimun Airflow Conditioned Room Conditioned Room Charge - lbs (kg) CFM (m /hr) Charge - lbs (kg) CFM (m /hr) Area - ft...
- Page 13 Installation Additional Clearances for Handling Concerns for Packaged DX Units Packaged DX or Air-Source Heat Pump Packaged DX units require additional clearance Units with PDX or ASHP have a system that is because they must have unrestricted air movement pressurized with refrigerant. If damage occurs, the around the condenser coil and condenser fans.
- Page 14 Installation Lifting Rail Mounting and Layout WARNING • The units may be installed on rails provided and installed by others. Ensure that rails are designed to Spreader bars are required to prevent damage to the handle the weight of the unit and provide proper load cabinet, failure to do so can result in damage that is distribution on building supports.
- Page 15 Installation Roof Curb Mounting Optional Piping Vestibule Roof curb details, including duct locations and If the unit was ordered with the vestibule, the NA (Non- dimensions, are to be found in the roof curb assembly Access side) clearance dimension must be measured instructions.
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Page 16: Recommended Electrical And Gas Supply Entry Locations
Recommended Electrical and Gas Supply Entry Locations Manufacturer recommends that electrical service and Optional Gas Piping gas supply be brought into the cabinet through the Units with indirect gas-fired furnaces require field- end wall, as shown below. There are three penetrations supplied and installed gas supply piping. -
Page 17: Piping Installation
Piping Installation Optional Coil Piping approximately 3 feet of water column per 100 feet of pipe. Chilled Water and Hot Water Configuration 5. For chilled water coils, the condensate drain pipe Factory-installed chilled water and hot water coils are should be sized adequately to ensure the condensate mounted in the coil section of the unit except for the drains properly. -
Page 18: Electrical Information
Electrical Information Determine the Size of Electric Heater WARNING Wiring The roof lining contains high voltage wiring. To prevent An optional electric heater may require a separate electrocution, do not puncture the interior or exterior power supply. The power connection should be made panels of the roof. -
Page 19: Control Center Components
Control Center Components Main Control Center Components Image represents a typical installation for RVE-40 or RVE-85. Components and locations will vary on other models. Electrical Cabinet 1. Power distribution block; high voltage supply is terminated here 2. Fuse holders Electrical Cabinet Accessible via control center door 3. -
Page 20: Component Operation
Component Operation Optional Component Operation Phase Monitor Exhaust Fan VFD Sequence Optional Building Static Pressure Sensor: The The unit control circuitry includes a phase monitor that constantly checks for phase reversal, phase imbalance, exhaust fan is modulated based upon the signal from loss of phase or a power brownout. - Page 21 Optional Component Operation Electronically Commutated (EC) IMPORTANT Condenser Fans with Inverter Scroll or Melted water from snow accumulation on the unit Digital Scroll Compressors roof can be sucked into outdoor fans, resulting in ice formation on fan blades under certain conditions. The EC condenser fan(s) will modulate up and down Remove snow accumulation from the unit roof and to maintain the optimal liquid line pressure using built...
- Page 22 Optional Component Operation VFD Compressor OPERATIONAL If the VFD compressor option is included, the compressor Doors and access panels bearing the ultraviolet VFD is mounted in the end of the condensing section. radiation hazard symbol which may have UV-C Condensing section internal components are accessible SPECTRAL IRRADIANCE greater than 1,7 μW/cm2 via the access panel on the side of the condenser coil.
- Page 23 Optional Component Operation Unoccupied Recirculation Damper to the thermodisc and wheel pressure sensor. When frost control is initiated, the timer will turn the supply The unoccupied recirculation option provides ae blower off. The default timer setting will shut down the recirculation damper from the return air intake to the supply fan for 5 minutes every 30 minutes, allowing supply airstream.
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Page 24: Factory-Installed Refrigeration Systems
Factory-Installed Refrigeration System Components Packaged DX Cooling with Three Way Hot Gas Reheat 1. Compressor 8. Accumulator and Integral Pressure Relief Valve 2. High Limit Pressure Switch Typical refrigerant pressure relief location. Device The switch opens when refrigerant pressure includes a fuse plug that operates as a safety relief increases above the set point in the discharge line. - Page 25 Factory-Installed Refrigeration System Components Air-Source Heat Pump with Three Way Hot Gas Reheat 1. Compressor 9. Filter Drier 2. High Limit Pressure Switch 10. Sight Glass The switch opens when refrigerant pressure 11. Four Way Reversing Valve increases above the set point in the discharge line. Each compressor circuit is equipped with a A manual reset is then required.
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Page 26: Refrigeration Start-Up And Service
Refrigeration Start-Up and Service Refrigeration System Service • The actual refrigerant charge is in accordance with the room size within which the refrigerant containing Requirements parts are installed; Personnel working on appliances must be trained by a • The ventilation machinery and outlets are operating national training organization or manufacturer that are adequately and are not obstructed;... - Page 27 Refrigeration Start-Up and Service minimize the amount of refrigerant contained in of gas (25 % maximum) is confirmed. Leak detection them. fluids are also suitable for use with most refrigerants but the use of detergents containing chlorine shall be • Cylinders shall be kept in an appropriate position avoided as the chlorine may react with the refrigerant according to the instructions.
- Page 28 Refrigeration Start-Up and Service K. Recovered refrigerant shall not be charged into another refrigerating system unless it has been cleaned and checked. Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label shall be dated and signed. For appliances containing flammable refrigerants, ensure that there are labels on the equipment stating the equipment contains flammable refrigerant.
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Page 29: Start-Up Components
Start-Up Components Supply/Exhaust Fan The fan should be checked for free rotation. If any The optional exhaust fan is a direct-drive plenum type. binding occurs, check for concealed damage and Fan speed is controlled by a VFD which, in turn, is foreign objects in the fan housing. - Page 30 GreenTrol® Automation Inc. at www.greentrol. 2. When SETUP appears on the screen press ENTER com. Also refer to the Greenheck Reference Guide for 3. Scroll DOWN (twice) to the NETWORK menu and Microprocessor Controller.
- Page 31 Start-up Components Optional Dirty Filter Switch To adjust the switch, the unit must be running with all of the access doors in place, except for the compartment where the switch is located (exhaust intake compartment). The adjusting screw is located on the top of the switch.
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Page 32: Alarms
Troubleshooting – Alarms Several of the electronic controls in the unit monitor the system for faults and will go into alarm, shutting down the unit or a single function within the unit. Microprocessor Controller The microprocessor is located in the main control center. -
Page 33: Unit
Troubleshooting – Unit Symptom Possible Cause Corrective Action Blown fuse or open circuit breaker. Replace fuse or reset circuit breaker and check amps. Defective motor or capacitor. Replace. Blower fails Motor overloaded. Reset VFD and check amps. to operate Check for On/Off switches. Check for correct supply Electrical. -
Page 34: Refrigeration Circuit
Troubleshooting – Refrigeration Circuit TROUBLESHOOTING NOTE IMPORTANT Do not release refrigerant to the atmosphere! If Before any components are changed on the required service procedures include the adding or refrigeration system, the cause of the failure must be removing of refrigerant, the service technician must identified. - Page 35 Troubleshooting – Refrigeration Circuit Symptom Possible Cause Corrective Action Refrigerant overcharge. Check pressures, charge by subcooling. Compressor Condenser fan motor defective. Check fan motor. starts but cuts out Condenser coil inlet obstructed or dirty. Check coil and clearances. Clean coil if necessary. on high Check high side equalized pressures, check expansion pressure...
- Page 36 Troubleshooting – Refrigeration Circuit Symptom Possible Cause Corrective Action Check for high entering wet bulb temperature, check for Excessive load on evaporator coil. excessive air flow. Compressor is unloaded. Check digital scroll controller signal and solenoid valve. (digital scroll) Check the thermal expansion valve, ensure bulb is insulated.
- Page 37 Troubleshooting – Refrigeration Circuit Symptom Possible Cause Corrective Action Check subcooling, check for leak. Repair leak and add Insufficient refrigerant charge. refrigerant. Defective or improperly adjusted Check superheating and adjust thermal expansion valve. expansion valve. discharge pressure Low suction pressure. See “low suction pressure”.
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Page 38: Routine Maintenance
Routine Maintenance Annually DANGER It is recommended that the annual inspection and Electric shock hazard. Can cause injury or death. maintenance occur at the start of the cooling season. Before attempting to perform any service or After completing the checklist, follow the unit start-up maintenance, turn the electrical power to the unit to checklist provided in the manual to ensure the OFF at disconnect switch(es). - Page 39 Routine Maintenance Maintenance Procedures: WARNING Lubrication - Check all moving components for REFER TO GENERAL SAFETY INFORMATION proper lubrication. Apply lubricant where required. Do not operate this unit without the filters and Any components showing excessive wear should be birdscreen installed. They prevent the entry of foreign replaced to maintain the integrity of the unit and ensure objects such as leaves, birds, etc.
- Page 40 Routine Maintenance Outdoor Air Supply Final Model Weatherhood Outdoor Filters Exhaust Filters Filters (Aluminum Mesh) (Pre-coil) RV-10 (1) 16x20x1 (1) 12x24 + (1) 24x24 RV-25 (4) 20x20x2 (4) 20x20 (5, 7, 10 tons) RV-25 (4) 20x20x2 (2) 20x20 + (2) 20x24 (12.5, 15 tons) RV-45 (4) 25x25x2...
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Page 41: Optional Polymer Energy Wheel
Optional Polymer Energy Wheel Start-Up Sequence of Operation If selected, the energy wheel is installed in the unit with Optional Economizer - The economizer will be locked one half of the wheel in the outdoor airstream and one out when: the outside air is below economizer lockout; half in the exhaust airstream. - Page 42 Optional Polymer Energy Wheel Maintenance Whenever retaining clips are opened, they should be closed as soon as possible. If the wheel should rotate WARNING when a clip is open, the clip will jam against the bearing support bar and could cause damage. Whenever performing maintenance or inspections, always disconnect the power source.
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Page 43: Optional Aluminum Energy Wheel
Optional Aluminum Energy Wheel Sequence of Operation The wheel rotates through two airstreams moving in opposite directions, which means the wheel is self- Optional Economizer cleaning up to a point. If the wheel media collects a The economizer will be locked out when: the outside layer of smoke residue or an oil film, the energy transfer air is below economizer lockout;... -
Page 44: Optional Energy Core
Optional Energy Core or retail stores, the energy core should be inspected WARNING annually and cleaned as needed. Failure to follow a Energy core shall not be subjected to temperatures regular cleaning cycle for the energy core can result in greater than 140°F. -
Page 45: Venting Connection Locations
Reference - Venting Connection Locations (Models RV-25, -45, RVE-40, -85) 200-300MBH 100-150MBH COMPRESSOR / CONTROL CENTER COMPRESSOR / CONTROL CENTER ACCESS ACCESS COMBUSTION AIR INLET COMBUSTION AIR INLET EXHAUST OUTLET EXHAUST OUTLET IG FURNACE IG FURNACE ACCESS ACCESS 300-400MBH 500MBH COMPRESSOR CONTROL CENTER COMPRESSOR... -
Page 46: Rated Airflow
Reference - Rated Airflow Packaged Direct Expansion Air-Source Heat Pump Model Airflow (SCFM) Model Airflow (SCFM) Model Airflow (SCFM) RV-10-3 1,100 RV-45-17.5 3,800 RV-25-5 2,600 RV-10-4 1,450 RV-45-20 4,600 RV-25-7 2,700 RV-10-5 1,700 RV-45-25 4,800 RV-25-10 3,700 RV-10-6 1,600 RV-45-30 5,200 RV-25-12.5 4,300... - Page 47 Maintenance Log Date ___________________Time _____________ AM/PM Date ___________________Time _____________ AM/PM Notes: ___________________________________________ Notes: ___________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ Date ___________________Time _____________ AM/PM Date ___________________Time _____________ AM/PM Notes: ___________________________________________ Notes: ___________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ Date ___________________Time _____________ AM/PM...
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Page 48: Our Commitment
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice. Product warranties can be found online at Greenheck.com, either on the specific product page or in the literature section of the website at Greenheck.com/Resources/Library/Literature.
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