Form 43343120
July 2021
-1-
TABLE OF CONTENTS
SECTION
DESCRIPTION
PAGE
1.0)
Safety ................................................................................................................................................... 2
2.0)
Installer Responsibility ...................................................................................................................... 2
3.0)
General Information ........................................................................................................................... 2
4.0)
Minimum Clearances to Combustibles ........................................................................................... 4
5.0)
Specifications...................................................................................................................................... 5
6.0)
Packing List ......................................................................................................................................... 6
6.1)
Accessory Packages .......................................................................................................................... 9
7.0)
General Heater Assembly Requirements
–
All Models .............................................................. 10
7.1)
Typical Assembly Layout
–
(with turbulators) .............................................................................. 10
8.0)
Dimensions
–
PGR Series ............................................................................................................... 11
8.1)
Heater Assembly Overview
–
20FT Body Models PGR 40, 50, 75, 80, 100, 125 ................ 12
8.2)
Heater Assembly Overview
–
30FT Body Models PGR 75, 80, 100, 125 .............................. 13
9.0)
Typical Suspension Methods .......................................................................................................... 14
10.0)
Heater Assembly .............................................................................................................................. 15
11.0)
Gas Connections and Regulations ................................................................................................. 26
12.0)
Instructions for Pressure Test Gauge Connection ....................................................................... 28
13.0)
Electrical Connections ..................................................................................................................... 30
13.1)
Single Stage (N5/L5) Internal and Thermostat Connections .................................................... 31
13.2)
Two Stage (N7/L7) Internal and Thermostat Connections ........................................................ 33
14.0)
Venting ............................................................................................................................................... 37
15.0)
Air for Combustion ........................................................................................................................... 42
15.1)
Direct Outside Air for Combustion ................................................................................................. 42
16.0)
Lighting and Shutdown Instructions .............................................................................................. 44
17.0)
Sequence of Operation
–
Single Stage (N5/L5) .......................................................................... 44
18.0)
Control Component Location .......................................................................................................... 46
19.0)
Cleaning and Annual Maintenance ............................................................................................... 47
20.0)
Troubleshooting Guide
–
Single Stage (N5/L5) .......................................................................... 48
20.1)
Troubleshooting Guide
–
Two Stage (N7/L7) .............................................................................. 51
21.0)
Replacing Parts ................................................................................................................................ 54
21.1)
Removal of Main Burner and Electrodes ...................................................................................... 54
21.2)
Removing Gas Valve and Manifold Assembly ............................................................................. 55
21.3)
Air Switch Pressure Check .............................................................................................................. 55
21.4)
Ignition System Checks ................................................................................................................... 56
22.0)
Installation Data ............................................................................................................................... 57
23.0)
Replacement Parts Guide ............................................................................................................... 58
24.0)
Warnings Card .................................................................................................................................. 61
This heater complies with ANSI Z83.20 (current standard) and CSA 2.34. Copies of the National Fuel Gas Code
(ANSI Z223.1-latest edition) are available from the CSA at 8501 East Pleasant Valley Road, Cleveland, Ohio
44131 or 55 Scarsdale Road, Don Mills, Ontario M3B 2R3. All NFPA codes are available from the National Fire
Protection Association, Batterymarch Park, Quincy, Massachusetts 02269.
