EasyManua.ls Logo

Greenheck RV User Manual

Greenheck RV
28 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
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 instructions could result in personal injury and/or property damage!
1
Packaged Rooftop Ventilator
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.
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.
Only qualified personnel should install and maintain this
system. Personnel should have a clear understanding of
these instructions and should be aware of general safety
precautions. Improper installation can result in electric
shock, possible injury due to coming in contact with
moving parts, as well as other potential hazards. Other
considerations may be required if high winds or seismic
activity are present. If more information is needed,
contact a licensed professional engineer before moving
forward.
1. Follow all local electrical and safety codes, as well
as the National Electrical Code (NEC), the National
Fire Protection Agency (NFPA), where applicable.
Follow the Canadian Electrical Code (CEC) in
Canada.
2. All moving parts must be free to rotate without
striking or rubbing any stationary objects.
3. Unit must be securely and adequately grounded.
4. Do not spin wheel faster than maximum cataloged
fan RPM. Adjustments to fan speed significantly
affect motor load. If the fan RPM is changed, the
motor current should be checked to make sure it is
not exceeding the motor nameplate amps.
5. Verify that the power source is compatible with the
equipment.
6. Never open access doors to the unit while it is
running.
®
®
Document 474612
RV/RVE
Packaged Rooftop Ventilator
Model RV/RVE

Table of Contents

Question and Answer IconNeed help?

Do you have a question about the Greenheck RV and is the answer not in the manual?

Greenheck RV Specifications

General IconGeneral
BrandGreenheck
ModelRV
CategoryFan
LanguageEnglish

Summary

General Safety Information

Safety Precautions and Codes

Adherence to safety codes, electrical practices, and operational rules.

Operational Warnings and Grounding

Ensuring proper grounding, fan RPM limits, and safe operation.

Receiving, Handling, and Storage

Receiving and Unpacking

Procedures for checking incoming shipments for damage and completeness.

Unit Handling and Storage

Guidelines for rigging, moving, and storing units to prevent damage.

Storage Inspection

Recommendations for periodic checks during storage.

Product Overview

Cooling, Heating, and Airflow

Details available cooling, heating options, and airflow arrangements.

Safety Listings and Models

Specifies safety certifications and lists unit models and capacities.

Subassemblies

Core Components

Details blowers, coils, compressors, and dampers.

Optional Features and Systems

Covers optional features like electric heaters, furnaces, and DX/Split systems.

Filtration and Vestibule

Explains filter types and the optional vestibule.

Installation - Dimensions and Clearances

Unit Weights and Dimensions

Provides dimensional data and weights for different unit sizes.

Service and DX Clearances

Specifies required clearances for access and additional needs for DX units.

Installation - Handling and Lifting

Handling Concerns and Preparations

Addresses safety and pre-lifting actions for units.

Lifting Procedures

Instructions for safely lifting and rigging the unit using provided lugs.

Installation - Mounting and Ductwork

Roof Curb Mounting

Steps for installing roof curbs and setting the unit.

Optional Vestibule and Ductwork

Guidance on optional vestibule attachment and ductwork configurations.

Installation - Electrical and Gas

Rail Mounting and Entry Locations

Guidelines for rail installation and preferred entry points for utilities.

Gas Piping and Connections

Details on gas supply piping requirements and connections for furnaces.

Piping Installation

Coil Piping and Connections

Instructions for connecting optional water and DX coils.

Condensate Drain Trap

Details on installing the P trap for condensate drainage and freeze protection.

Electrical Information

Power Line and Heater Wiring

Guidance on sizing power lines and wiring for optional electric heaters.

Electrical Connections and Low Voltage

Covers power connection, convenience outlets, and low voltage wiring.

Field Disconnects

Recommendations for installing disconnect switches and fuses.

Control Center Components

Main Control Center Layout

Identifies components on the high and low voltage sides of the main control center.

Optional Furnace Controls

Details components and controls for the optional indirect gas-fired furnace.

Component Operation

Phase Monitor and VFD Operation

Explains phase monitor function and VFD control for fan speed.

Fan Control Sequences

Outlines VFD modulation based on sensors or external signals for supply/exhaust fans.

Refrigeration System Components

Key Refrigeration Circuit Parts

Identifies components like TXV, coils, compressors, and pressure switches.

Optional Refrigeration Features

Describes optional hot gas bypass valve and reheat valve functions.

Unit Start-Up

Start-Up Safety and Precautions

Crucial safety warnings and pre-energization requirements before start-up.

Start-Up Procedure and Data Recording

Overview of the start-up process and fields for recording essential unit data.

Start-Up Procedures

Pre-Start-Up Checklist

Comprehensive checklist of tasks to perform before initial unit operation.

Start-Up Steps and Voltage Check

Procedure for unit start-up, including fan rotation and voltage imbalance checks.

Special Tools for Start-Up

Lists essential tools required for performing the unit start-up.

Start-Up Checklist Details

Voltage, Amps, and Fan Speeds

Checklist items for recording line voltage, motor amps, and fan RPMs.

Compressor Performance Checks

Monitoring compressor superheat, subcooling, pressures, and temperatures.

Sight Glass and Bypass Operation

Checking moisture indicators and hot gas bypass functionality.

Component Start-Up: Fans

Fan Rotation and Offset

Ensuring correct fan rotation and adjusting supply fan offset.

Fan Control and Vibration

VFD control for fans and identifying common causes of vibration.

Optional Energy Wheel Start-Up

Energy Wheel Air Seal Adjustment

Procedure for adjusting air seals and checking wheel rotation.

Drive Belt and Sequence of Operation

Inspecting drive belts and understanding operational sequences like economizer mode.

Optional Energy Wheel Maintenance

Wheel Inspection and Cleaning

Semiannual inspection and cleaning procedures for the energy wheel.

Belt, Bearing, and Reassembly

Maintenance for belts, bearings, and steps for reassembling wheel segments.

Troubleshooting - Alarms

Energy Wheel Troubleshooting

Diagnosing issues with the energy wheel not turning or running intermittently.

Controller and VFD Faults

Identifying and resolving alarm conditions from microprocessor and VFD.

Phase Monitor Status

Interpreting phase monitor LEDs for operational status and faults.

Troubleshooting - Unit Operation

Blower and Motor Issues

Diagnosing blower failure, motor starter chatter, and overload conditions.

Airflow and Noise Problems

Addressing low/high airflow, excessive noise, and vibration.

Troubleshooting - Refrigeration

Compressor Start and Cycling Issues

Diagnosing compressor start failures, cut-outs, and cycling problems.

Refrigerant Charge and Restrictions

Checking refrigerant levels, airflow, and line restrictions.

Troubleshooting - Refrigeration (Continued)

High Pressure and Thermal Overload

Resolving compressor cut-out due to high pressure or thermal overload.

Compressor Noise and Wiring

Troubleshooting compressor hums, noise, vibration, and wiring issues.

Troubleshooting - Refrigeration (Continued)

High Suction/Discharge Pressure

Diagnosing causes of high suction and discharge pressures in the system.

Low Suction Pressure Causes

Troubleshooting low suction pressure related to airflow or coil issues.

Troubleshooting - Refrigeration (Continued)

Low Discharge Pressure and Cycling

Addressing low discharge pressure, short cycling, and compressor oil loss.

Cooling Issues and Frosting

Resolving insufficient cooling, liquid line frosting, and evaporator frost.

Routine Maintenance

Monthly and Semiannual Tasks

Scheduled maintenance for filters, motors, drains, and coils.

Annual Maintenance and DX Units

Annual checks, lubrication, and specific maintenance for DX units.

Maintenance Procedures

Lubrication, Dampers, and Filters

Procedures for component lubrication, damper checks, and filter maintenance.

Fan and Coil Care

Maintenance for fan motors, wheels, and cleaning of evaporator/condenser coils.

Maintenance Log

Recording Maintenance Activities

Provides spaces to log maintenance dates, times, and notes for tracking.

Our Commitment

Product Information and Support

Details on product specifications, warranties, and support resources.

Related product manuals