Roberts Gorden ENERGYTUBE AG Series Manual

WARNING
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. DO NOT try to light any appliance.
3. DO NOT use electrical switches.
4. DO NOT use any telephone in
your building.
5. Extinguish any open flame.
6. Leave the building.
7. Immediately call your local gas
supplier after leaving the building.
Follow the gas supplier’s
instructions.
8. If you cannot reach your gas
supplier, call the Fire Department.
Fire Hazard
Keep all flammable objects, liquids and
vapors the minimum required clear-
ances to combustibles away from
heater.
Some objects will catch fire or explode
when placed close to heater.
Failure to follow these instructions can
result in death, injury or property
damage.
WARNING
Installation must be done by a contractor qualified
in the installation and service of gas-fired heating
equipment or your gas supplier.
Improper installation, adjustment, alteration, service
or maintenance can result in death, injury or
property damage. Read the Installation, Operation
and Service Manual thoroughly before installing or
servicing this equipment.
Installer
Please take the time to read and understand
these instructions prior to any installation.
Installer must give a copy of this manual to the owner.
Owner
Keep this manual in a safe place in order to provide
your service technician with necessary information.
Roberts-Gordon LLC
1250 William Street
P. O . B o x 4 4
Buffalo, New York 14240-0044
Telephone: [phone]
Fax: [phone]
Toll Free: 800.828.7450
www.robertsgordon.com
P/N ETAG36100NA RevA 11/16
AG-40
AG-60
AG-80
AG-100
AG-125
AG-150
AG-175
© 2016 Roberts-Gordon LLC
Model AG
Gas Fired, Low Intensity
Unitary Heater
Installation, Operation &
Service Manual

© 2016
Roberts-Gordon LLC
All rights reserved. No part of this work covered by the copyrights herein may be reproduced
or copied in any form or by any means - graphic, electronic, or mechanical, including
photocopying, recording, taping or information storage and retrieval systems - without the
written permission of Roberts-Gordon LLC.
TABLE OF CONTENTS
SECTION 1: Heater Safety...................................................... 1
1.1 Manpower Requirements ............................................. 1
1.2 Safety Labels and Their Placement ............................. 1
1.3 California Proposition 65 ..............................................1
SECTION 2: Installer Responsibility ..................................... 4
2.1 Wall Tag ....................................................................... 4
2.2 Corrosive Chemicals.................................................... 4
2.3 National Standards and Applicable Codes .................. 4
SECTION 3: Clearances to Combustibles............................. 5
3.1 Required Clearances to Combustibles......................... 5
SECTION 4: National Standards and Applicable Codes ... 10
4.1 Gas Codes................................................................. 10
4.2 Aircraft Hangars ......................................................... 10
4.3 Public Garages .......................................................... 10
4.4 Electrical .................................................................... 10
4.5 Venting....................................................................... 10
4.6 High Altitude .............................................................. 10
SECTION 5: Major Components .......................................... 11
5.1 Standard Parts List .................................................... 13
SECTION 6: Heater Installation............................................ 16
SECTION 7: Optional Heater Accessories.......................... 26
7. 1 U - Tube Configuration.................................................. 26
7.2 ElbowPackage Configuration..................................... 29
7.3 Reflector Side Extension ............................................ 31
7. 4 L o wer Clearance Shield Installation ........................... 32
7. 5 Two-Foot Decorative Grille Installation ....................... 32
SECTION 8: Venting.............................................................. 34
8.1 Venting....................................................................... 34
8.2 Unvented Operation................................................... 35
8.3 Horizontal Venting...................................................... 35
8.4 Vertical Venting.......................................................... 35
8.5 Unvented Operation Tube Termination ...................... 35
8.6 Length Requirements ................................................ 35
8.7 Vent Material Recommendations ...............................35
8.8 Horizontal Ventilation 4'' (10 cm) Pipe........................ 36
8.9 Vertical Ventilation 4'' (10 cm) Pipe............................36
8.10 Common Side Wall Venting .....................................37
8.11 Common Vertical Venting ........................................ 38
8.12 Outside Combustion Air Supply ............................... 39
SECTION 9: Gas Piping........................................................ 42
SECTION 10: Wiring.............................................................. 44
10.1 Line Voltage Thermostat Wiring...............................44
10.2 LowVoltage Thermostat with One Burner ............... 44
10.3 LowVoltage Thermostat Wiring with Multiple
Burners..................................................................... 45
10.4 Internal Wiring.......................................................... 45
10.5 Ladder Diagram....................................................... 46
10.6 Electrical Connection to the Burner ......................... 46
SECTION 11: Operation and Maintenance.......................... 47
11. 1 S e q uence of Operation ............................................ 47
11.2 To Shut Off Heater.................................................... 47
11.3 To Start Heater ......................................................... 47
11.4 Pre-Season Maintenance and Annual Inspection..... 47
11.5 Maintenance Checklist ............................................. 48
SECTION 12: Troubleshooting............................................. 50
12.1 Troubleshooting FlowChart ..................................... 51
12.2 Manifold Gas Pressure Setting ................................ 53
SECTION 13: Replacement Parts ........................................ 54
SECTION 14: General Specifications.................................. 56
14.1 Material Specifications............................................. 56
14.2 Heater Specifications............................................... 56
14.3 Suspension Specifications....................................... 56
14.4 Controls Specifications ............................................ 56
SECTION 15: The ROBERTS GORDON®
ENERGYTUBE®AG Warranty ........................ 57
Printed in U.S.A.

TABLE OF FIGURES
Figure 1: Top and Bottom Panel Label Placement .................... 2
Figure 2: Side and Back Panel Label Placement...................... 3
Figure 13: Major Component Descriptions
- Standard Reflector .............................................. 11
Figure 14: Major Component Descriptions - High Efficiency
Reflector................................................................. 12
Figure 15: Critical Hanger Placement ..................................... 17
Figure 16: Linear Heater Assembly Overview........................ 18
Figure 17: Linear Heater Layout Overview............................. 19
Figure 18: U-Tube Heater Assembly Overview...................... 27
Figure 19: U-tube reflector kit (optional).................................. 27
Figure 20: U-Tube Heater Layout Overview........................... 28
Figure 21: Reflector Joint Detail .............................................. 30
Figure 22: Tube Termination ................................................... 35
Figure 23: Gas Connection with Flexible Gas Hose................ 43
Figure 24: Burner Exploded View........................................... 55

SECTION 1: HEATER SAFETY
1 of 57
SECTION 1: HEATER SAFETY
Yo ur Safety is Important to Us!
This symbol is used throughout
the manual to notify youof
possible fire, electrical or burn
hazards. Please pay special
attention when reading and
following the warnings in these
sections.
Installation, service and annual inspection of heater
must be done by a contractor qualified in the
installation and service of gas-fired heating
equipment.
Read this manual carefully before installation,
operation or service of this equipment.
This heater is designed for heating nonresidential
indoor spaces. Do not install in residential spaces.
This heater is not certified to meet the requirements
of NFPA30A-2012 Section 7.6.6. (maximum tube
temperature of 750 °F (399 °C)). Do not install this
heater in facilities where compressed natural gas
(CNG) or liquid natural gas (LNG) are present. These
instructions, the layout drawing, local codes and
ordinances, and applicable standards that apply to
gas piping, electrical wiring, venting, etc. must be
thoroughly understood before proceeding with the
installation.
Protective gear is to be worn during installation,
operation and service in accordance to the
Occupational Safety and Hazard Administration
(OSHA). Gear must be in accordance to NFPA 70E,
latest revision when working with electrical
components. Thin sheet metal parts have sharp
edges. To prevent injury, the use of work gloves is
recommended. The use of gloves will also prevent
the transfer of body oils from the hands to the surface
of the reflector.
Before installation, check that local distribution
conditions, nature of gas and pressure, and
adjustment of the appliance are compatible.
This heater must be applied and operated under the
general concepts of reasonable use and installed
using best building practices.
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 a
person responsible for their safety. Children should
be supervised to ensure that they do no play with the
appliance.
For additional copies of the Installation, Operation
and Service Manual, please contact Roberts-Gordon
LLC.
1.1 Manpower Requirements
To p r event personal injury and damage to the heater,
two persons will be required for installation.
1.2 Safety Labels and Their Placement
Product safety signs or labels should be replaced by
the product user when they are no longer legible.
Please contact Roberts-Gordon LLC or your
ROBERTS GORDON®independent distributor to
obtain replacement signs or labels. See Page 2,
Figure 1 through Page 3, Figure 2.
1.3 California Proposition 65
In accordance with California Proposition 65
requirements, a warning label must be placed in a
highly visible location on the outside of the
equipment (i.e., near equipment’s serial plate). See
label placement drawing on Page 3, Figure 2 for label
location. Avoid placing label on areas with extreme
heat, cold, corrosive chemicals or other elements. To
order additional labels, please contact Roberts-
Gordon LLC or your ROBERTS GORDON®
independent distributor.

AG-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
2 of 57
FIGURE 1: Top and Bottom Panel Label Placement
Description Part Number
Logo Label 91031113
Vent Length Label 91039500
Gas Connection Label 91018122
Burner Status Light Label 91033301

SECTION 1: HEATER SAFETY
3 of 57
FIGURE 2: Side and Back Panel Label Placement
Description Part Number
Rating Plate Label 91010401
Lighting Instruction Plate Label 91029602
Wiring Label 91030308
Clearances to Combustibles Label 91013428
Proposition 65 Label 91070016
Thermostat Connection Label 91037902

AG-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
4 of 57
SECTION 2: INSTALLER RESPONSIBILITY
The installer is responsible for the following:
• To install the heater, as well as the gas and
electrical supplies, in accordance with applicable
specifications and codes. Roberts-Gordon LLC
recommends the installer contact a local Building
Inspector or Fire Marshal for guidance.
• To use the information given in a layout drawing
and in the manual together with the cited codes
and regulations to perform the installation.
• To install the heater in accordance with the
clearances to combustibles.
• To furnish all needed materials not furnished as
standard equipment.
• To plan location of supports.
• To provide access on all sides for burner servicing
and removal.
• To provide the owner with a copy of this
Installation, Operation and Service Manual.
• To never use heater as a support for a ladder or
other access equipment and never hang or
suspend anything from heater.
• To ensure there is adequate air circulation around
the heater and to supply air for combustion,
ventilation and distribution in accordance with
local codes.
• To safely and adequately install heater using
materials with a minimal working load of 75 lbs
(33 kg).
• To ensure the heater is placed in an approved
application.
2.1 Wall Tag
A laminated wall tag is available for the heater as
a permanent reminder of the safety instructions and
the importance of the required clearances to
combustibles. Please contact Roberts-Gordon LLC
or your ROBERTS GORDON®independent
distributor to obtain the wall tag. Affix the tag by
peeling off the backing of the adhesive strips on the
rear surface and position the tag on a wall near the
heater (e.g. thermostat or ROBERTS GORDON®
Controller).
A copy of the wall tag (P/N 91037912) is illustrated on
the back cover. For an immediate solution, youmay
affix this copy on the wall near the heater.
Knowyour model number and installed configuration.
Model number and installed configuration are found on
the burner and in the Installation, Operation and
Service Manual. See Page 6, Figure 3 through Page
8, Figure 11. Write the proper clearance dimensions in
permanent ink according to your model number and
configuration in the open spaces on the tag.
2.2 Corrosive Chemicals
Roberts-Gordon LLC cannot be responsible for
ensuring that all appropriate safety measures are
undertaken prior to installation; this is entirely the
responsibility of the installer. It is essential that the
contractor, the sub-contractor, or the owner identifies
the presence of combustible materials, corrosive
chemicals or halogenated hydrocarbons* anywhere
in the premises.
* Halogenated Hydrocarbons are a family of
chemical compounds characterized by the
presence of halogen elements (fluorine, chlorine,
bromine, etc.). These compounds are frequently
used in refrigerants, cleaning agents, solvents, etc.
If these compounds enter the air supply of the
burner, the life span of the heater components will
be greatly reduced. An outside air supply must be
provided to the burners whenever the presence of
these compounds is suspected. Warranty will be
invalid if the heater is exposed to halogenated
hydrocarbons.
2.3 National Standards and Applicable Codes
All appliances must be installed in accordance with
the latest revision of the applicable standards and
national codes. This refers also to the electric, gas
and venting installation. Note: Additional standards
for installations in public garages, aircraft hangars,
etc. may be applicable.
CAUTION
Product Damage Hazard
Do not use heater in area containing
corrosive chemicals.
Refer to appropriate Material Safety Data
Sheets (MSDS).
Failure to follow these instructions can result
in product damage.