Roberts Gorden CTH2-150, CTH2-80, CTH2-125, CTH2-175, CTH2-100 User Manual

	FOR YOUR SAFETY
	If you smell gas:				Vantage	®	II
	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.			Gas-Fired, Low Intensity
		Follow the gas supplier’s
		instructions.
	8.	If you cannot reach your gas
					Unitary Heater
		supplier, call the Fire Department.
		WARNING
					Installation, Operation &
					Service Manual
					CTH2-40
		Fire Hazard
					CTH2-60
	Keep all flammable objects, liquids and
					CTH2-80
	vapors the minimum required clear-
	ances to combustibles away from				CTH2-100
	heater.
	Some objects will catch fire or explode				CTH2-125
	when placed close to heater.				CTH2-150
	Failure to follow these instructions can
	result in death, injury or property				CTH2-175
	damage.

	WARNING		Installer
		Please take the time to read and understand
	Improper installation, adjustment, alteration, service
		these instructions prior to any installation.
	or maintenance can result in death, injury or
		Installer must give a copy of this manual to the owner.
	property damage. Read the Installation, Operation
	and Service Manual thoroughly before installing or		Owner
	servicing this equipment.	Keep this manual in a safe place in order to provide
	Installation must be done by a contractor qualified	your serviceman with necessary information.
	in the installation and service of gas-fired heating
	equipment or your gas supplier.
		Roberts-Gordon LLC
		1250 William Street
		P.O. Box 44
		Buffalo, New York 14240-0044
		Telephone: [phone]
		Fax: [phone]
		Toll Free: 800.828.7450
		www.rg-inc.com
	© 2012 Roberts-Gordon LLC	www.radiantheaters.com	P/N 130100NA Rev. M 02/12

TABLE OF CONTENTS

SECTION 1: Heater Safety......................................................		1	SECTION 9: Gas Piping........................................................		40
1.1 Manpower Requirements .............................................		1	SECTION 10: Wiring..............................................................		42
1.2 Safety Labels and Their Placement .............................		1	10.1	Line Voltage Thermostat Wiring...............................	42
1.3 California Proposition 65 ..............................................		1	10.2	Low Voltage Thermostat with One Burner ...............	42
SECTION 2: Installer Responsibility .....................................		4	10.3	Low Voltage Thermostat Wiring with Multiple Burners.
2.1	Wall Tag .......................................................................	4	43
2.2	Corrosive Chemicals....................................................	4	10.4	Internal Wiring..........................................................	43
2.3	National Standards and Applicable Codes ..................	4	10.5	Ladder Diagram.......................................................	44
SECTION 3: Clearances to Combustibles.............................		5	10.6	Electrical Connection to the Burner .........................	44
3.1	Required Clearances to Combustibles.........................	5	SECTION 11: Operation and Maintenance..........................		45
SECTION 4: National Standards and Applicable Codes .....		9	11.1 Sequence of Operation ............................................		45
4.1	Gas Codes...................................................................	9	11.2 To Shut Off Heater....................................................		45
4.2	Aircraft Hangars ...........................................................	9	11.3 To Start Heater .........................................................		45
4.3	Public Garages ............................................................	9	11.4 Pre-Season Maintenance and Annual Inspection.....		45
4.4	Electrical ......................................................................	9	11.5 Maintenance Checklist .............................................		46
4.5	Venting.........................................................................	9	SECTION 12: Troubleshooting.............................................		48
4.6	High Altitude ................................................................	9	12.1	Honeywell SmartValve® II Troubleshooting..............	49
SECTION 5: Major Components ..........................................		10	12.2	Troubleshooting Flow Chart.....................................	50
5.1	Standard Parts List ....................................................	11	12.3	Manifold Gas Pressure Setting ................................	52
SECTION 6: Heater Installation............................................		13	SECTION 13: Replacement Parts ........................................		53
6.1	Burner Tube Installation ............................................	18	SECTION 14: General Specifications ..................................		56
6.2	Tube Clamp Package Installation..............................	18	14.1	Material Specifications.............................................	56
6.3	Coupling and Tube Assembly....................................	19	14.2	Heater Specifications...............................................	56
6.4	Turbulator Installation ................................................	20	14.3	Suspension Specifications.......................................	56
6.5	Reflector Installation ..................................................	21	14.4	Controls Specifications ............................................	56
6.6	Burner Installation......................................................	23	SECTION 15: The ROBERTS GORDON® VANTAGE® II
SECTION 7: Optional Heater Accessories..........................		24		Warranty.........................................................	57
7.1 U-Tube Configuration..................................................		24
7.2 Elbow Package Configuration.....................................		28
7.3 Reflector Side Extension ............................................		30
7.4 Lower Clearance Shield Installation ...........................		31
7.5 Two-Foot Decorative Grille Installation .......................		31
7.6 Protective Grille Installation ........................................		33
SECTION 8: Venting..............................................................		34
8.1	General Venting Requirements..................................	34
8.2	Unvented Operation...................................................	34
8.3	Horizontal Venting......................................................	35
8.4	Vertical Venting ..........................................................	35
8.5	Unvented Operation Tube Termination ......................	35
8.6	Length Requirements ................................................	35
8.7	Horizontal Ventilation 4" (10 cm) Pipe........................	35
8.8	Vertical Ventilation 4" (10 cm) Pipe............................	36
8.9	Common Sidewall Venting.........................................	36
8.10 Common Vertical Venting ........................................		37
8.11 Outside Combustion Air Supply ...............................		38

© 2012 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.

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 3: Standard Reflector .....................................................	5
Figure 4: One Side Reflector.....................................................	6
Figure 5: Two Side Reflectors ...................................................	6
Figure 6: 45° Tilt Reflector ........................................................	6
Figure 7: U-Tube, Standard Reflector........................................	7
Figure 8: U-Tube, 45°................................................................	7
Figure 9: U-Tube, Opposite 45° Reflector .................................	7
Figure 10: 2-Foot Deco Grille and Protective Grille ...................	8
Figure 11: Lower Clearance Shield*..........................................	8
Figure 12: Venting .....................................................................	8
Figure 13: Major Component Descriptions..............................	10
Figure 14: Critical Hanger Placement .....................................	14
Figure 15: Linear Heater Assembly Overview ........................	15
Figure 16: Linear Heater Layout Overview..............................	16
Figure 17: Linear Heater Layout Overview (Continued) ..........	17
Figure 18: U-Tube Heater Assembly Overview ......................	25
Figure 19: U-Tube Heater Layout Overview ............................	26
Figure 20: U-Tube Heater Layout Overview (Continued) ........	27
Figure 21: Reflector Joint Detail ..............................................	29
Figure 22: Tube Termination ...................................................	35
Figure 23: Gas Connection with Flexible Gas Hose ...............	41
LIST OF TABLES
Table 1: Contents of the Burner Carton..................................	11
Table 2: Contents of Core and Extension Packages ..............	11
Table 3: Component Package Guide......................................	12

SECTION 1: HEATER SAFETY

SECTION 1: HEATER SAFETY

Your Safety is Important to Us! This symbol is used throughout the manual to notify you of 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. 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. Thin sheet metal parts, including the aluminum reflector portion of the heater and the various venting components, 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 the 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 prevent 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 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 2, Figure 1 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.

1

CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

FIGURE 1: Top and Bottom Panel Label Placement

	Logo Label
Bottom	Rating Plate Label
Panel
Description	Proposition 65 Label	Top Panel
	Part Number
Logo Label	91013200
Rating Plate Label	91010401
Gas Connection Label	91018122
Proposition 65 Label	91070015
		Gas Connection Label
2

SECTION 1: HEATER SAFETY

FIGURE 2: Side and Back Panel Label Placement

Control Side Panel

Control Side Panel (Inside)

Thermostat

Connection

Label

Back Panel

Description	Part Number
Clearances to Combustibles Label	91013415
Wiring Label	91013300
Low Voltage Connection Label	91039700
Vent Length Label	91039500
Lighting Instruction Plate Label	91029602

Clearances to Combustibles Label

Wiring Label

Vent Length Label

Lighting Instruction Plate Label

3

CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

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 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 to burners for servicing on all sides for burner removal.

•To provide the owner with a copy of this installation, operation and service manual.

•To never use heater as 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 a 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 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, you may affix this copy on the wall near the heater.

Know your 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 5, Figure 3 through Page 8, Figure 12. 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

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.

Roberts-Gordon 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.

4

SECTION 3: CLEARANCES TO COMBUSTIBLES 3.1 Required Clearances to Combustibles

Clearances are the required distances that combustible objects must be away from the heater to prevent serious fire hazards. Combustibles are materials that may catch on fire and include common items such as wood, paper, rubber, fabric, etc. Maintain clearances to combustibles at all times for safety.

Clearances for all heater models are located on the burner of the heater and on Page 5, Figure 3 through Page 8, Figure 12 in this manual. Check the clearances on each burner for the model heater being installed to make sure the product is suitable for your application and the clearances are maintained. Read and follow the safety guidelines below:

• Keep gasoline or other combustible materials including flammable objects, liquids, dust or vapors away from this heater or any other appliance.

• The stated clearances to combustibles represents a surface temperature of 90° F (50°C) above room temperature. Building materials with a low heat tolerance (such as plastics, vinyl siding, canvas, triply, etc) may be subject to degradation at lower temperatures. It is the installer’s responsibility to assure that adjacent materials are protected from degradation.

• Maintain clearances from heat sensitive equipment and workstations.

• Maintain clearances from vehicles parked below the heater.

• Maintain clearances from swinging and overhead doors, overhead cranes, vehicle lifts, partitions, storage racks, hoists, building construction, etc.

SECTION 3: CLEARANCES TO COMBUSTIBLES

WARNING

Fire Hazard

Keep all flammable objects, liquids and vapors the minimum required clearances 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.

• In locations used for the storage of combustible materials, signs must be posted to specify the maximum permissible stacking height to maintain required clearances from the heater to the combustibles. Signs must be posted adjacent to the heater thermostat. In the absence of a thermostat, signs must be posted in a conspicuous

location.

• Consult local Fire Marshal, Fire Insurance Carrier or other authorities for approval of proposed installation when there is a possibility of exposure to combustible airborne materials or vapors.

• Hang heater in accordance to the minimum suspension requirements on Page 14, Figure 14.

• If the radiant tubes must pass through the building structure, be sure that adequate sleeving and fire stop is installed to prevent scorching and/or fire hazard.

NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows.

2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from where the burner and burner tube connect.

FIGURE 3: STANDARD REFLECTOR

										(inches)				(centimeters)
								Model	A	B	C	D	A	B	C	D
								CTH2-40	6	27	53	27	16	69	135	69
								CTH2-60	6	35	63	35	16	89	161	89
								CTH2-80	6	38	66	38	16	97	168	97
								CTH2-100	6	40	71	40	16	102	181	102
								CTH2-125	6	46	77	46	16	117	196	117
								CTH2-150	6	50	80	50	16	127	204	127
								CTH2-175	8	52	82	52	21	133	209	133

5

CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows.

2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from where the burner and burner tube connect.

FIGURE 4: ONE SIDE REFLECTOR
					(inches)				(centimeters)
			Model	A	B	C	D	A	B	C	D
A			CTH2-40	6	9	53	44	16	23	135	112
			CTH2-60	6	9	63	47	16	23	161	120
			CTH2-80	6	9	70	54	16	23	178	138
C	B	D	CTH2-100	6	9	77	59	16	23	196	150

CTH2-125	6	9	83	65	16	23	211	166
CTH2-150	6	9	86	69	16	23	219	176
CTH2-175	8	9	88	73	21	23	224	186

FIGURE 5: TWO SIDE REFLECTORS
					(inches)				(centimeters)
			Model	A	B	C	D	A	B	C	D
A			CTH2-40	6	15	53	15	16	39	135	39
			CTH2-60	6	23	66	23	16	59	168	59
			CTH2-80	6	25	72	25	16	64	183	64
C	B	D	CTH2-100	6	27	78	27	16	69	199	69

CTH2-125	6	32	84	32	16	82	214	82
CTH2-150	6	35	88	35	16	89	224	89
CTH2-175	8	40	91	40	21	102	232	102

FIGURE 6: 45° TILT REFLECTOR

											(inches)				(centimeters)
									Model	A	B	C	D	A	B	C	D
									CTH2-40	8	8	51	46	21	21	130	117
									CTH2-60	8	8	60	54	21	21	153	138
									CTH2-80	8	8	66	60	21	21	168	153
									CTH2-100	10	8	74	64	26	21	188	163
									CTH2-125	10	8	78	69	26	21	199	176
									CTH2-150	12	8	84	74	31	21	214	188
									CTH2-175	12	8	85	79	31	21	216	201

6

SECTION 3: CLEARANCES TO COMBUSTIBLES

NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows.

2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from where the burner and burner tube connect.

FIGURE 7: U-TUBE, STANDARD REFLECTOR

A

B C

					(inches)				(centimeters)
			Model	A	B	C	D	A	B	C	D
			CTH2-40		- UNAPPROVED -				- UNAPPROVED -
			CTH2-60	6	35	63	30	16	89	161	77
D			CTH2-80	6	38	69	37	16	97	176	94
			CTH2-100	6	40	76	39	16	102	194	100
			CTH2-125	6	46	79	43	16	117	201	110
			CTH2-150	6	50	84	47	16	127	214	120
			CTH2-175	8	54	87	51	21	138	221	130

FIGURE 8: U-TUBE, 45°

																		(inches)				(centimeters)
																Model	A	B	C	D	A	B	C	D
						A
		B														CTH2-40		- UNAPPROVED -				- UNAPPROVED -
													D			CTH2-60	8	8	60	42	21	21	153	107
																CTH2-80	8	8	66	46	21	21	168	117
																CTH2-100	8	8	74	52	21	21	188	133
																CTH2-125	8	8	78	61	21	21	199	155
							C									CTH2-150	8	8	84	66	21	21	214	168
																CTH2-175	8	8	85	70	21	21	216	178

FIGURE 9: U-TUBE, OPPOSITE 45° REFLECTOR

A

B	C

					(inches)				(centimeters)
			Model	A	B	C	D	A	B	C	D
			CTH2-40		- UNAPPROVED -				- UNAPPROVED -
			CTH2-60	8	54	60	22	21	138	153	56
			CTH2-80	8	60	66	22	21	153	168	56
D			CTH2-100	10	64	74	22	26	163	188	56
			CTH2-125	10	70	78	22	26	178	199	56
			CTH2-150	12	74	84	22	31	188	214	56
			CTH2-175	12	76	85	22	31	194	216	56

7

CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows.

2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from where the burner and burner tube connect.

FIGURE 10: 2-FOOT DECO GRILLE AND PROTECTIVE GRILLE
			(inches)				(centimeters)
	Model	A	B	C	D	A	B	C	D
A	CTH2-40	6	27	53	27	16	69	135	69
	CTH2-60	6	35	63	35	16	89	161	89
	CTH2-80	6	38	66	38	16	97	168	97
C	CTH2-100	6	40	71	40	16	102	181	102
B	D	6	46	77	46	16	117	196	117
	CTH2-125
	CTH2-150	6	50	80	50	16	127	204	127
	CTH2-175	8	52	82	52	21	133	209	133

FIGURE 11: LOWER CLEARANCE SHIELD*
					(inches)				(centimeters)
			Model	A	B	C	D	A	B	C	D
A			CTH2-40	6	34	27	34	16	87	69	87
			CTH2-60	6	39	33	39	16	100	84	100
			CTH2-80	6	40	38	40	16	102	97	102
C	B	D	CTH2-100	6	50	44	50	16	127	112	127

CTH2-125	6	54	48	54	16	138	122	138
CTH2-150	6	55	50	55	16	140	127	140
CTH2-175		- UNAPPROVED -				- UNAPPROVED -

*When installed in the first 10' (3 m).

FIGURE 12: VENTING

																		(inches)			(centimeters)
					A					E						Model	A	E	F	A	E	F
																CTH2-40	14	18	18	36	46	46
		Unvented										Vent				CTH2-60	14	18	18	36	46	46
												Pipes
																CTH2-80	20	24	18	51	61	46
		Radiant	Tubes
																CTH2-100	20	24	18	51	61	46
																CTH2-125	20	24	18	51	61	46
		Vented											F
																CTH2-150	20	30	18	51	77	46
																CTH2-175	20	30	18	51	77	46

8

SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES

SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES

4.1 Gas Codes

The type of gas appearing on the nameplate must be the type of gas used. Installation must comply with national and local codes and requirements of the local gas company.

United States: Refer to National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest revision.

Canada: Refer to Natural Gas and Propane Installation Code CSA B149.1 - latest revision.

4.2 Aircraft Hangars

Installation in aircraft hangars must be in accordance with the following codes:

United States: Refer to Standard for Aircraft Hangars, NFPA 409 - latest revision.

Canada: Refer to Natural Gas and Propane Installation Code CSA B149.1 - latest revision.

In aircraft storage and servicing areas, heaters shall be installed at least 10' (3 m) above the upper surface of wings or of engine enclosures of the highest aircraft which may be housed in the hangar. The measurement shall be made from the wing or engine enclosure (whichever is higher from the floor) to the bottom of the heater.

•In shops, offices and other sections of aircraft hangars communicating with aircraft storage or servicing areas, heaters shall be installed not less than 8' (2.4 m) above the floor.

•Suspended or elevated heaters shall be so located in all spaces of aircraft hangars that they shall not be subject to injury by aircraft, cranes, movable scaffolding or other objects. Provisions shall be made to assure accessibility to suspended heaters for recurrent maintenance purposes.

4.3 Public Garages

Installation in garages must be in accordance with the following codes:

United States: Refer to Standard for Parking Structures NFPA 88A - latest revision or the Code for Motor Fuel Dispensing Facilities and Repair Garages, NFPA 30A - latest revision. Canada: Refer to Natural Gas and Propane Installation Code CSA B149.1 - latest revision.

•Heaters must not be installed less than 8' (2.4 m) above the floor. Minimum clearances to combustibles must be maintained from vehicles parked below the heater.

•When installed over hoists, minimum clearances to combustibles must be maintained from the upper most point of objects on the hoist.

4.4 Electrical

The heater must be electrically grounded in accordance with the following codes:

United States: Refer to National Electrical Code®, NFPA 70 - latest revision. Wiring must conform to the most current National Electrical Code®, local ordinances and any special diagrams furnished.

Canada: Refer to Canadian Electrical Code, CSA C22.1 Part 1 - latest revision.

4.5 Venting

The venting must be installed in accordance with the requirements within this manual and the following codes:

United States: Refer to National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest revision.

Canada: Refer to Natural Gas and Propane Installation Code CSA B149.1 - latest revision.

4.6 High Altitude

These heaters are approved for installations up to 2000' (610 m)(US), 4500' (1370 m)(Canada) without modification. Consult factory if US installation is above 2000' (610 m) or Canadian installation is above 4500' (1370 m).

9

CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

SECTION 5: MAJOR COMPONENTS

FIGURE 13: Major Component Descriptions

Burner with Tube Gasket	Reflector
Must be installed with the	(Aluminum or
flame observation	Stainless
window facing down.	Steel)
	Alternate overlap as
	shown on overview and
	on Page 16, Figure 16.
	Minimum overlap is 6" (16 cm).

	Burner Tube	Tube
	Supplied in 10'
		Hot rolled or heat
	(3 m) lengths. Burner	treated aluminized tube
	tube is always the first tube
		supplied in 10' (3 m) lengths.
	after the burner.
	Tube and Reflector Hanger	Coupling Assembly
		with Lock
	with Clamp Package
	Position this hanger no more
	than 4" (10 cm) away from the
	burner.	Reflector End Cap
		Punch out center
	Tube and Reflector Hanger	section to
		accommodate tube.
	Suspend system from these
	hangers.
		Vent Adapter

Reflector Support Strap &

Wire Form

	Turbulator
	Turbulator must
	be installed in the last
	standard section of tube.
Flex Gas Line with	Turbulator is not required on the
Shut Off Cock	CTH2-125/150/175. For
	installation see Page 20,
	Section 6.4.

10

SECTION 5: MAJOR COMPONENTS

5.1 Standard Parts List

Table 1: Contents of the Burner Carton

Part No.	Description	CTH2-40	CTH2-60	CTH2-80	CTH2-100	CTH2-125	CTH2-150	CTH2-175
030XXXXX	Burner Assembly (Rate and Fuel Varies)	1	1	1	1	1	1	1
02568200	Gasket (Burner to Burner Tube)	1	1	1	1	1	1	1
130100NA	Installation, Operation and Service Manual	1	1	1	1	1	1	1
94273914	Hex Head Bolts 5/16-18 Rolok	4	4	4	4	4	4	4
96411600	Split Lock washer	4	4	4	4	4	4	4
91201708	Pipe Nipple (Black) 1/2” NPT x 4”	1	1	1	1	1	1	1
91317300	1/4" Quick Disconnect (Wire)	2	2	2	2	2	2	2
*91412200	Flexible Stainless Steel Gas Hose - 1/2" NPT (US Models Only)	1	1	1	1	1
*91412204	Flexible Stainless Steel Gas Hose - 3/4" NPT (US Models Only)	-	-	-	-	-	1	1
03051503	Turbulator Adapter	1	1	1	1	-	-	-
03051504	Turbulator Aluminized Steel	2	4	4	2	-	-	-
03051505	Turbulator Stainless Steel	1	-	-	-	-	-	-

*Canadian Models: Rubber (Type 1) Gas Hoses available as an accessory. See Page 40, Section 9.

Table 2: Contents of Core and Extension Packages

				Core Packages							Extension Packages
		Hot Rolled				Aluminized				Hot Rolled				Aluminized
Part No.	Description	20'	30'	40'	10' 20' 30'			40'	10'	20' 30' 40'			10' 20' 30'			40'
		(6m)	(9m)	(12m)	(3m)	(6m)	(9m)	(12m)	(3m)	(6m)	(9m)	(12m)	(3m)	(6m)	(9m)	(12m)
91409300	Tube, Hot Rolled Steel, 10' (3 m)	1	2	3	-	-	-	-	1	2	3	4	-	-	-	-
91409408	Tube, HT Aluminized, 10' (3 m)	-	-	-	-	1	2	3	-	-	-	-	1	2	3	4
03051101	Burner Tube, ALUMI-THERM® Steel, 10' (3 m)	-	1	1	-	-	1	1	-	-	-	-	-	-	-	-
03051601	Burner Tube, HT ALUMI-THERM® Steel, 10' (3 m)	1	-	-	1	1	-	-	-	-	-	-	-	-	-	-
01312700	Coupling Assembly	1	2	3	-	1	2	3	1	2	3	4	1	2	3	4
02750303	Standard Reflector, 8' (3.5 m)	3	4	6	2	3	4	6	2	3	4	6	2	3	4	6
02750800	End Cap	2	2	2	2	2	2	2	-	-	-	-	-	-	-	-
03090100	Tube and Reflector Hanger	3	4	5	2	3	4	5	1	2	3	4	1	2	3	4
91907302	S-Hook	3	4	5	2	3	4	5	1	2	3	4	1	2	3	4
03050010	Reflector Support Package (Strap, Wire Form, Screws)	2	3	5	1	2	3	5	2	3	4	6	2	3	4	6
91107720	U-Clip Package	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
90502700	Vent Adapter	1	1	1	1	1	1	1	-	-	-	-	-	-	-	-
01318901	Tube Clamp Package	1	1	1	1	1	1	1	-	-	-	-	-	-	-	-
	Part Number	CP20HRS	CP30HRS	CP40HRS	CP10ALUM	CP20ALUM	CP30ALUM	CP40ALUM	EXP10HRS	EXP20HRS	EXP30HRS	EXP40HRS	EXP10ALUM	EXP20ALUM	EXP30ALUM	EXP40ALUM

11

CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

Table 3: Component Package Guide

	Model	Tubing Length	Core Packages
		Minimum	Standard	Aluminized
	CTH2-40	10’ (3m)	-	CP10ALUM
	CTH2-60	20’ (6m)	CP20HRS	CP20ALUM
	CTH2-80	20’ (6m)	CP20HRS	CP20ALUM
	CTH2-100	30’ (9m)	CP30HRS	CP30ALUM
	CTH2-125	40’ (12m)	CP40HRS	CP40ALUM
	CTH2-150	50’ (15m)	CP30HRS + EXP20HRS	CP30ALUM + EXP20ALUM
	CTH2-175	60’ (18m)	CP30HRS + EXP30HRS	CP30ALUM + EXP30ALUM

Additional tubing length may be added to heater. Tubing must be heat-treated, aluminized or porcelain coated. Any additional tubing lengths are considered as vent length for length determination. Maximum venting length for minimum heater length is 45' (13.7 m) total.

12

SECTION 6: HEATER INSTALLATION

SECTION 6: HEATER INSTALLATION

WARNING

Severe Injury Hazard

Secure burner to burner tube with bolts and lockwashers.

Hang heater with materials with a minimum working load of 75 lbs (33 kg).

Failure to follow these instructions can result in death, injury or property damage.

Typical installation configurations are shown in

Figure 14.

Expansion and contraction of the tube dictates that the minimum suspension lengths in the table on Page 14, Figure 14 be maintained.

WARNING

Cut/Pinch Hazard

Wear protective gear during installation, operation and service.

Edges are sharp.

Failure to follow these instructions can result in injury.

To ensure your safety, and comply with the terms of the warranty, all units must be installed in accordance with these instructions.

The gas or the electrical supply lines must not be

used to support the heater.

Do not locate the gas or electric supply lines directly over the path of the flue products from the heater.

The heater must be installed in a location that is readily accessible for servicing.

The heaters must be installed in accordance with clearances to combustibles as indicated on the rating plate and in this instruction manual.

The minimum and maximum gas inlet pressures must be maintained as indicated on the rating plate.

13

CTH2-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

FIGURE 14: Critical Hanger Placement

Typical Suspension Details

Beam Clamp

Anchor

Screw Hook

3/8"

Concrete Beam

Locknut Wood Beam

	Chain Size
Rod 3/8"	3/16"	Washers
	Minimum
24" min.*
(61 cm)	“X”*
	S-hooks

Turnbuckle	* Allows for thermal expansion of system
Not Included

S-hooks
Side View	Hanger
Hanger
Reflector
Must Be Within 4" (10 cm)	Front View

Description	Part Number
S-Hook	91907302
Tube/Reflector Hanger	03090100

Run Length	Typical Expansion	Minimum “X” Length
10' (3 m) - 50' (15 m)	±1" (3 cm)	12" (305 mm)
51' (15 m) - 60' (18 m)	±2" (5 cm)	18" (457 mm)
61' (18 m) - 70' (24 m)	±3" (8 cm)	24" (609 mm)

14

SECTION 6: HEATER INSTALLATION

FIGURE 15: Linear Heater Assembly Overview

U-Clips

Tube Turbulator (With Select Models)

Vent Adapter

Reflector

Reflector End Cap

Burner

Tube Clamp Package

Burner

Tube and Reflector Hanger Coupling

Reflector Support

15