Roberts Gorden Caribe CGTH-30 User manual

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.
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 safe
distances 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.
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
© 2017 Roberts-Gordon LLC
CGTH-30
CGTH-40
CGTH-50
P/N 180101NA Rev. D 04/17
Gas-Fired, Low-Intensity
Infrared Heaters for Light
Industrial/Commercial
Applications
Use and
Care Manual

© 2017
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: Before You Begin ............................................... 1
1.1 Heater Safety ............................................................... 1
1. 2 Q uestions, Comments or Suggestions......................... 2
SECTION 2: Introduction........................................................ 3
2.1 About Roberts-Gordon LLC ......................................... 3
2.2 About the Heater..........................................................3
2.3 Unpacking the Heater ..................................................3
2.4 Safety Labels and Their Placement............................. 3
2.5 California Proposition 65..............................................3
SECTION 3: Components Identification ............................... 6
SECTION 4: Installation Considerations............................... 7
4.1 Where Can the Heater Be Installed? ........................... 7
4.2 Where Can't the Heater Be Installed?..........................7
4.3 Installer's Responsibility ..............................................7
4.4 Thermostat Tag............................................................ 7
SECTION 5: Heater Installation Requirements..................... 8
5.1 National Standards and Applicable Codes .................. 8
5.2 Gas Service Requirements.......................................... 8
5.3 Electrical Service Requirements.................................. 8
5.4 Venting Requirements.................................................. 9
5.5 Non-Residential Installations ....................................... 9
SECTION 6: Required Safe Distances From
Combustibles................................................... 11
SECTION 7: Installation........................................................ 14
7.1 Choose Location for Heater........................................ 14
7.2 General Venting Guidelines........................................ 14
7.3 Venting ....................................................................... 17
7.4 Typical Installation ...................................................... 19
7.5 Heater Orientation ...................................................... 19
7.6 Protective Grille .......................................................... 21
SECTION 8: Operation.......................................................... 22
8.1 Operating Instructions ............................................... 22
8.2 To Turn Off Gas To Heater ......................................... 22
8.3 Sequence of Operation.............................................. 22
SECTION 9: Troubleshooting............................................... 24
9.1 General ...................................................................... 25
9.2 Basic Heater Care......................................................26
9.3 Replacement Parts .................................................... 27
SECTION 10: The ROBERTS GORDON®CARIBE®
Warranty.......................................................... 29
Printed in the U.S.A.

TABLE OF FIGURES
Figure 1: Bottom and Side Panel Label Placement................... 4
Figure 2: Control Side and Back Panel Label Placement ......... 5
Figure 3: Assembly Overview................................................... 6
Figure 4: Balanced Flue............................................................ 9
Figure 5: Thermostat Tag........................................................ 12
Figure 6: Horizontal Installations............................................. 13
Figure 7: 45° Tilted Installations.............................................. 13
Figure 8: Vent Terminal Locations........................................... 15
Figure 9: Horizontal Venting Through The Wall....................... 17
Figure 10: Horizontal Venting With An Elbow......................... 18
Figure 11: Roof Venting.......................................................... 18
Figure 12: Typical Installation.................................................. 19
Figure 13: Horizontal Installation............................................. 20
Figure 14: 45° Tilted Installation.............................................. 20
Figure 15: Reflector and Grille ................................................ 21

SECTION 1: BEFORE YOU BEGIN
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SECTION 1: BEFORE YOU BEGIN
Thank youfor purchasing a ROBERTS GORDON®
heating product. We are pleased youhave chosen
the CGTH-Series overhead tube heater. In addition
to the quality youreceive from our company, youalso
receive years of infrared heating experience.
For years of trouble-free operation from your heater,
carefully read this Use & Care Manual. This Manual
contains valuable information to help youuse the
heater safely and properly.
To obtain warranty service, please complete and mail
the Owner Warranty Registration Card found on the
last page of this manual. In addition to activating your
warranty, registering your heater enables us to con-
tact youwith safety and product updates.
Keep this manual in a safe place in case youhave
any questions or require service in the future. Also,
since proof of purchase is required to obtain warranty
coverage, keep the original sales receipt in a safe
place. Remember to record the model and serial
numbers of your heater below. Model and serial num-
bers are found on the rating tag affixed to the heater.
See Page 3, Section 2 for rating tag location.
1.1 Heater Safety
Yo ur Safety is Important to Us!
This symbol is used throughout
the manual to notify youof possi-
ble 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, opera-
tion or service of this equipment. Improper installa-
tion, service or maintenance can result in death,
injury or property damage.
Check the minimum required safe distances from
combustibles given on the outside of each burner to
make sure that the product is suitable for your appli-
cation. The minimum required safe distances from
combustibles are also found on page 11, section 6 of
this manual. After the installation is complete, check
product operation as provided in these instructions.
This heater must be applied and operated under the
general concepts of reasonable use and installed
using best business practices.
This appliance is not intended for use by persons
(including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowl-
edge, unless they have been given supervision or
instruction concerning use of the appliance by a per-
son responsible for their safety.
Children should be supervised to ensure that they do
not play with the appliance.
For additional copies of the Installation, Operation
and Service Manual, please contact Roberts-Gordon
LLC.
Model Number: Serial Number: Fuel: Installation Date:
Installed By:
Company
Purchased From (if different from installer):
Company
Name Name
Address Address
Phine Phone
Fax Fax
E-mail E-mail

CGTH USE AND CARE MANUAL
2 of 29
1.2 Questions, Comments or Suggestions
Please direct any questions, comments or sugges-
tions to:
Roberts-Gordon LLC
1250 William Street
P. O . B o x 4 4
Buffalo, NewYork 14240-0044
Telephone: [phone]
Fax: [phone]
Toll Free: 800.828.7450
www.robertsgordon.com
www.rg-inc.com
www.radiantheaters.com

SECTION 2: INTRODUCTION
3 of 29
SECTION 2: INTRODUCTION
2.1 About Roberts-Gordon LLC
Roberts-Gordon LLC pioneered low-intensity infrared
heating systems with the introduction of its revolu-
tionary, custom-engineered CORAYVAC®system.
With years of infrared expertise in commercial and
industrial applications, Roberts-Gordon LLC offers
the CGTH-Series heater for use in light industrial/
commercial applications.
2.2 About the Heater
The CGTH-Series is a factory-assembled, gas-fired,
low-intensity heating system that incorporates a bal-
anced flue. The system has been designed for easy
installation and can provide years of economical
operation and trouble-free service. Not only is infra-
red heat efficient, it also provides the most comfort-
able conditions in open areas, such as garages.
Gas-Fired means it uses clean-burning natural or LP
gas.
Low-Intensity means that the radiant surface of the
tube does not glowred. Instead, it operates at a
lower temperature, less than 1000° F (538° C) and
radiates energy at a lower intensity per square foot of
radiating surface. The lower temperature and inten-
sity levels are within a range that is effective in estab-
lishing and maintaining personal comfort levels. An
aluminum reflector directs the radiant energy down-
ward to the occupied area.
Balanced Flue means that the burner draws com-
bustion air from outdoors and exhausts the products
of combustion, also to the outdoors, through a shared
opening. This is accomplished through two concen-
tric tubes.
Radiant refers to the energy radiated by the CGTH-
Series heater. Because the energy is in the form of
infrared rays, it does not directly heat the air. Instead,
the rays heat objects such as the floor, cars, machines
and people. The warm objects, in turn, heat the air.
These combined features are key to the comfort and
fuel efficiency provided by the CGTH-Series heater.
2.3 Unpackingthe Heater
2.3.1 Manpower Requirements
To p r event personal injury and damage to the heater,
two persons will be required to remove the heater
from the carton. Both ends of the heater should be
lifted from the carton at the same time. The burner
should be lifted by gripping the bottom. The reflector
of the heater should be lifted using the hanger.
2.3.2 Safety
Protective gear is to be worn during installation, oper-
ation and service. Thin sheet metal parts, such as
the aluminum reflector portion of the heater and the
various venting components, have sharp edges. To
prevent injury, the use of work gloves is recom-
mended. The use of gloves will also prevent the
transfer of body oils from the hands to the surface of
the reflector.
For additional copies of the Installation, Operation
and Service Manual, please contact Roberts-Gordon
LLC.
2.4 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 ROB-
ERTS GORDON®independent distributor to obtain
replacement signs or labels. See Page 4, Figure 1
through Page 5, Figure 2.
2.5 California Proposition 65
In accordance with California Proposition 65 require-
ments, 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 5, Figure 2 for label location. Avoid
placing label on areas with extreme heat, cold, corro-
sive chemicals or other elements. To order additional
labels, please contact Roberts-Gordon LLC or your
ROBERTS GORDON®independent distributor.
WARNING
Cut/Pinch Hazard
Wear protective gear during installation,
operation and service.
Edges are sharp.
Failure to follow these instructions can result
in injury.

CGTH USE AND CARE MANUAL
4 of 29
FIGURE 1: Bottom and Side Panel Label Placement
Side Panel Operating Instruction Label
Logo Label
Bottom Panel
Clearances to
Combustibles Label
Description Part Number
Logo Label 91037702
Operating Instruction Label 91037100
Clearances to Combustibles Label 91037800