Greenheck PVF User Manual

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!
Indirect Gas-Fired Heat Modules 1
General Safety Information
These indirect gas-fired furnaces are commonly used
in many different manufacturer’s ventilating products.
For unit-specific information, refer to the Installation,
Operation and Maintenance manual (IOM) for the unit in
which this furnace is installed.
• Both the furnace units are listed for installation in the
United States and in Canada.
• Installation of gas-fired duct furnaces must conform
with local building codes. In the absence of local
building codes, installation must conform to the
National Fuel Gas code, ANSI Z223.1 or in Canada,
CAN/CGA-B149 Installation codes.
• All electrical wiring must be in accordance with the
regulations of the National Electric Code, ANSI/
NFPA-70.
• Unit is approved for installation downstream from
refrigeration units. In these conditions, condensate
could form in the duct furnace and provision must be
made to dispose of the condensate.
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. Do not touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.
FOR YOUR SAFETY
The use and storage of gasoline or other
flammable vapors and liquids in open
containers in the vicinity of this appliance is
hazardous.
WARNING
Improper installation, adjustment, alteration,
service or maintenance can cause injury or
death. Read the installation, operating and
maintenance instructions thoroughly before
installing or servicing this equipment.
Recognized Component
®
®
Document 474645
Model PVF and PVG
Indirect Gas-Fired Heat Modules
Model PVF
Model PVG

Greenheck PVF Specifications

General

Model	PVF
Category	Furnace
Manufacturer	Greenheck
Venting	Power Vented
Ignition	Direct Spark Ignition
Fuel Type	Gas
Input BTU/h	50, 000 to 400, 000
Construction	Heavy-duty steel
Control	Integrated
Applications	Commercial and Industrial

Summary

General Safety Information

Key Safety Warnings

Essential advice for gas leaks, proper installation, and safe operation.

Receiving, Unpacking, and Storage

Unit Identification and Specifications

Model, Serial Number, and Turndown Recording

Locating and recording furnace model, serial numbers, and burner turndown ratio.

Furnace Control Center Overview

Control Center Components and Logic

Listing of control center components and explanation of operational logic.

Furnace, Electrical, and Control Components

Key Furnace Components and Controls

Controllers and Microprocessors

Details on Microprocessor, FX Controller, Ignition Controller, and other control systems.

Sensors and Safety Devices

Covers temperature sensors, airflow switches, and high limit protection.

Gas-Fired Burner Turndown Explained

Modulation and Staged Turndown Methods

How electronic valves and staged systems achieve variable firing rates.

Venting Installation for Outdoor Units

Venting Installation for Indoor Units

Venting Methods for Indoor Units

Standard Indoor Venting Installation Guide

Detailed instructions for installing standard indoor venting systems.

Vent Pipe Diameter and Installation Procedures

Selecting pipe diameter and procedures for installing exhaust vent pipe.

Installation of Concentric Venting

Concentric Venting Configurations and Diameters

Guidelines for horizontal/vertical installation and connection diameters.

Concentric Venting – Vertical Installation

Vertical Venting Details and Lengths

Vent connection diameters and minimum/maximum vent lengths for vertical systems.

Installation of Two Pipe Venting – Horizontal

Horizontal Two-Pipe Venting Details

Vent connection diameters and minimum/maximum vent lengths for horizontal systems.

Installation of Two Pipe Venting – Vertical

Vertical Two-Pipe Venting Details

Vent connection diameters and minimum/maximum vent lengths for vertical systems.

Control Wiring Installation

Discharge Air Sensor Installation

Gas Piping Installation Guidelines

Gas Supply Requirements and Connection

Typical Gas Supply Piping Connection Diagram

Diagram and explanation of typical gas supply piping connections.

Sequence of Operation and Performance

Start-Up, Heat Mode, and Lockout Recovery

Initial checks, heating operation steps, and procedures for recovering from lockout.

Gas Valves Overview

Gas Valve Types: Single, Two-Stage, and Modulating

Descriptions of single, two-stage, modulating, and Selectra gas valves.

Furnace Start-Up Procedures

4:1 Turndown Electronic Modulation Start-Up

Specific start-up and adjustment procedures for 4:1 turndown systems.

Adjusting High and Low Fire Settings

Modulating Valve High and Low Fire Adjustment Guide

Detailed steps to set the high and low fire gas pressure for the modulating valve.

2:1 Turndown Electronic Modulation Start-Up

8 Stage Combustion Start-Up Procedures

Single Stage Furnace Start-Up Procedures

2 Stage Combustion Start-Up Procedures

Combination Turndown Configuration Start-Up

Ignition Controller Troubleshooting Guide

LED Error Codes and Fault Diagnosis

Interpretation of LED indicators for normal and error states, including faults.

4:1 Modulating Furnace Ignition Troubleshooting

4:1 Modulating Furnace Ignition Troubleshooting (Continued)

2:1 Modulating Furnace Ignition Troubleshooting

8 Stage Furnace Ignition Troubleshooting

8 Stage Furnace Ignition Troubleshooting (Continued)

Single or 2:1 Stage Furnace Ignition Troubleshooting

Reference - FX Controller

FX Controller Operation and Settings

Details on Program Mode, stand-alone control, and temperature sensor settings.

Field Adjustments for FX Controller

High Fire Mode and Setting Adjustments

Procedures for entering high fire, returning to normal, and adjusting settings.

Furnace Control with Microprocessor Control

Maintenance Procedures

Burner, Heat Exchanger, and Component Care

Procedures for cleaning burners, inspecting heat exchanger, and other components.

Component Inspections and Parts Ordering

Annual checks for flue collector, wiring, gas train, and how to order parts.

Maintenance Log

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