Greenheck PVF/PVG Indirect Gas-Fired Heat Modules (474645) - Manual (Page 3)

Indirect Gas-Fired Heat Modules 3
®
Table of Contents
General Safety Information . . . . . . . . . . . . . . 1
Receiving, Unpacking, Storage . . . . . . . . . . . . 2
Unit Identification . . . . . . . . . . . . . . . . . . . 2
Furnace Model Number . . . . . . . . . . . . . . . . 2
Burner Control Turndown . . . . . . . . . . . . . . . 2
Furnace Serial Number . . . . . . . . . . . . . . . . 2
ETL Listing . . . . . . . . . . . . . . . . . . . . . . . 2
Product Overview . . . . . . . . . . . . . . . . . . . 2
Furnace Control Center
Furnace Control Center Components. . . . . . . . 4
Typical Furnace Control Logic. . . . . . . . . . . . 4
Typical Furnace, Electrical and
Control Components . . . . . . . . . . . . . . . . 5
Gas-Fired Burner Turndown . . . . . . . . . . . . 6
Electronic Modulation . . . . . . . . . . . . . . . . 6
Two Stage Valve . . . . . . . . . . . . . . . . . . . 6
Combinations . . . . . . . . . . . . . . . . . . . . 6
Available Turndown Control Options . . . . . . . 6
Installation of Venting for Outdoor Units . . . . . 7
Installation of Venting for Indoor Units . . . . . . 7
Venting Methods . . . . . . . . . . . . . . . . . . 8
Installation of Standard Indoor Venting
Horizontal . . . . . . . . . . . . . . . . . . . . . . 8
Vertical . . . . . . . . . . . . . . . . . . . . . . . . 8
Installation of Concentric Venting
Horizontal . . . . . . . . . . . . . . . . . . . . 9-10
Vertical . . . . . . . . . . . . . . . . . . . . . 10-11
Two-Pipe Venting - Horizontal. . . . . . . . . 11-12
Two-Pipe Venting - Vertical . . . . . . . . . . . . 12
Installation of Control Wiring . . . . . . . . . . 13
Installation of Discharge Air Sensor . . . . . . 13
Installation of Gas Piping . . . . . . . . . . . 13-14
Gas Supply Requirements . . . . . . . . . . . . 14
Connect the Supply Gas Line . . . . . . . . . . . 14
Installation Addition Regulator . . . . . . . . . . 14
Testing the System for Leaks . . . . . . . . . . . 14
Gas Pressure Test Ports. . . . . . . . . . . . . . 14
Sequence of Operation . . . . . . . . . . . . . . 15
Start-Up / Standby . . . . . . . . . . . . . . . . 15
Heat Mode. . . . . . . . . . . . . . . . . . . . . 15
Recovery from Lockout . . . . . . . . . . . . . . 15
Performance Data . . . . . . . . . . . . . . . . . 15
Gas Valves . . . . . . . . . . . . . . . . . . . . . 16
Start-Up - Furnaces (all units) . . . . . . . . . . 17
4:1 Turndown Electronic Modulation . . . . . . . 18
Adjust High Fire and Low Fire Settings . . . . . 18
Modulating Valve High Fire Setting . . . . . . . 18
Modulating Valve Low Fire Setting . . . . . . . 18
8 Stage Combustion . . . . . . . . . . . . . . . 19
Single Stage . . . . . . . . . . . . . . . . . . . . 19
2 Stage Combustion . . . . . . . . . . . . . . . 20
Combination Turndown Configurations . . . . . . 20
Troubleshooting
Ignition Controller . . . . . . . . . . . . . . . . . 21
4:1 Electronic Modulation . . . . . . . . . . . 22-23
2:1 Electronic Modulation . . . . . . . . . . . . . 24
8 Stage . . . . . . . . . . . . . . . . . . . . 25-26
Single and Two Stage . . . . . . . . . . . . . . . 27
Reference: FX Controller . . . . . . . . . . . . . 28
Stand-Alone Furnace Control . . . . . . . . . . . 28
Program Mode . . . . . . . . . . . . . . . . . 28
Inlet Air Sensor (optional) . . . . . . . . . . . . 28
Discharge Air Temperature . . . . . . . . . . . 28
Outside Air Temperature . . . . . . . . . . . . 29
Go to High Fire Mode . . . . . . . . . . . . . . 29
Return to Normal Operation. . . . . . . . . . . 29
Access to Set Points Menu . . . . . . . . . . . 29
Access the Discharge Air Temperature . . . . . 29
Access the Inlet Air Sensor (optional) . . . . . . 29
Access the Room Override Setting . . . . . . . 29
Furnace Control with Microprocessor. . . . . 29-30
Maintenance
Combustion Blower Motor . . . . . . . . . . . . 30
Burners and Orifices . . . . . . . . . . . . . . . 30
Heat Exchanger . . . . . . . . . . . . . . . . . . 30
Flue Collector Box. . . . . . . . . . . . . . . . . 30
Electrical Wiring . . . . . . . . . . . . . . . . . . 30
Gas Train . . . . . . . . . . . . . . . . . . . . . 30
Replacement Parts . . . . . . . . . . . . . . . . 30
Maintenance Log . . . . . . . . . . . . . . . . . 31
Our Commitment . . . . . . . . . . . . . Backcover