Roberts Gorden Vantage NP CTHN040NP 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 serviceman 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.rg-inc.com
© Copyright 2006 Roberts-Gordon, LLC
Quality in Any Language™
CTHN-40
CTHN-60
CTHN-80
CTHN-100
CTHN-125
CTHN-150
CTHN-175
CTHN-200
P/N 252101NA Orig. 10/06
Vantage®NP
Fuel Conversion
Kit Instructions
WARNING
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. DO NOT try to li ht any appliance.
3. DO NOT use electrical switches.
4. DO NOT use any telephone in
your buildin .
5. Leave the buildin .
6. Immediately call your local as
supplier after leavin the buildin .
Follow the as suppliers
instructions.
7. If you cannot reach your as
supplier, call the Fire Department.
Fire Hazard
Do not store or use asoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
Some objects will catch fire or explode
when placed close to heater.
Failure to follow these instructions can
result in death, injury or property
dama e.

© 2006 Roberts-Gordon, LLC
All rights reserved. No part of this ork 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 - ithout the
ritten permission of Roberts-Gordon, LLC.
TABLE OF CONTENTS
SECTION 1: Heater Safety...................................................... 1
SECTION 2: Installer Responsibility ..................................... 2
2.1 Wall Tag ....................................................................... 2
2.2 Corrosive Chemicals.................................................... 2
2.3 National Standards and Applicable Codes .................. 2
SECTION 3: For Natural to Propane Conversions Only....... 3
3.1 Contents of Fuel Conversion Kits (Natural to Propane).......3
SECTION 4: For Propane to Natural Conversions Only....... 4
4.1 Contents of Fuel Conversion Kits (Propane to Natural).......4
SECTION 5: Fuel Conversion Instructions ........................... 5
5.1 Burner Removal........................................................... 5
5.2 Door Assembly Removal ............................................. 5
5.3 Burner Cup Assembly Removal
and Reassembly ......................................................... 7
5.4 Regulator Spring Replacement.................................... 7
5.5 Inlet Gas Pressure Checks.......................................... 8
5.6 Adjust Regulator .......................................................... 8
5.7 Burner Conversion Label Information ........................ 11
5.8 Attach Burner Conversion Label................................ 11
SECTION 6: Critical Considerations.................................... 12
6.1 Required Clearances to Combustibles....................... 12
SECTION 7: Operation and Maintenance............................ 17
7.1 Sequence of Operation .............................................. 17
7.2 To Shut Off Heater...................................................... 17
7.3 To Start Heater ........................................................... 17
7.4 Pre-Season Maintenance and Annual Inspection....... 17
7.5 Maintenance Checklist .........................................................18
SECTION 8: The ROBERTS GORDON®VANTAGE®NP
Warranty ........................................................... 21
Printed in U.S.A.

TABLE OF FIGURES
Figure 1: Conversion Kit Regulator Installation in Valve
(Natural to Propane)................................................... 3
Figure 2: Conversion Kit Regulator Installation in Valve
(Propane to Natural)................................................... 4
Figure 3: VANTAGE®NP Burner Assembly Overview ..............5
Figure 4: Burner (external view from below) .............................6
Figure 5: Burner, Top View (internal assembly) ........................ 6
Figure 6: Pressure Regulator....................................................7
Figure 7: Burner, Side View (internal assembly).......................8
Figure 8: Manometer Reading (Gas Pressure) ......................... 9
Figure 9: Manometer Reading (Differential Reading).............. 10
Figure 10: Label P/N 91039400 .............................................. 11
Figure 11: Standard Reflector.................................................. 13
Figure 12: One Side Reflector................................................. 13
Figure 13: Two Side Reflectors................................................ 13
Figure 14: 45° Tilt Reflector..................................................... 14
Figure 15: U-Tube, Standard Reflector.................................... 14
Figure 16: U-Tube, 45° ............................................................ 14
Figure 17: U-Tube, Opposite 45° Reflector.............................. 15
Figure 18: 2-Foot Deco Grille, 1-Foot Deco Grille
and Protective Grille............................................... 15
Figure 19: Lower Clearance Shield ......................................... 15
Figure 20: Venting ................................................................... 16

SECTION 1: HEATER SAFETY
1
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.
Due to the nature of gas conversions, it is important
you use the correct conversion kit for the heater
model and gas you are converting to. Use only
genuine ROBERTS GORDON®conversion kits.
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.
Thin sheet metal parts, such as the 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 local distribution
conditions, nature of gas and pressure, and
adjustment of the appliance are compatible.
For additional copies of the VANTAGE®NP
Installation, Operation and Service Manual, please
contact Roberts-Gordon.
WARNING
Explosion Hazard
Turn off gas supply to heater before service or
aintenance.
Failure to follow these instructions can result in
death, injury or property da age.
WARNING
Electrical Shock Hazard
Disconnect electrical power before service or
aintenance.
Failure to follow these instructions can result in
death or electrical shock.

VANTAGE®NP FUEL CONVERSION INSTRUCTIONS
2
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 ladder or other
access equipment and never hang or suspend
anything from heater.
• To safely and adequately install heater using
materials with a minimal working load of 75 lbs.
(33 kg).
• To ensure there is adequate air circulation around
the heater and to supply air for combustion,
ventilation and distribution in accordance with
local codes.
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 13, Figure 11 through
Page 14, Figure 16. 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 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.
In Canada, the conversion shall be carried out in
accordance with the requirements of the provincial
authorities having jurisdiction and in accordance with
the requirements of the CAN-B149.1 and CAN/CGA
B149.1 and B149.2 Installation Codes for Gas
Burning Appliances.
CAUTION
Do not use heater in an area containing corrosive
chemicals.
Avoid the use of corrosive chemicals to ensure a
longer life of the burner, tubing and other parts.
Failure to follow these instructions can result in
propert damage.

SECTION 3: FOR NATURAL TO PROPANE CONVERSIONS ONLY
3
SECTION 3: FOR NATURAL TO PROPANE CONVERSIONS ONLY
FIGURE 1: Conversion Kit Regulator Installation in Valve (Natural to Propane)
3.1 Contents of Fuel Conversion Kits (Natural to Propane)
All kits include this manual (P/N 252101NA) and the VANTAGE®NP Installation, Operation and Service
Manual (P/N 152101NA).
Fire Hazard
Check conversion kit part nu ber before proceeding.
Kit part nu ber ust atch the corresponding
odel nu ber.
Failure to follow these instructions can result
in death, injury or property da age.
WARNING
©
This appliance has been converted to _______ fuel.
Orifice:
Manifold Pressure:
Input:
Cet appareil a été converti au:
Injecteur:
Pression à la tubulure d'alimentation:
Débit calorifique:
Printed in the U.S.A./Imprimé aux Etats-Unis P/N 91039400
Sping Kit: P/N 90032600
Gas Conversion Label: P/N 91039400
Orifice: P/N (See Table Below)
ap Screw (black)
O Ring (black)
Pressure Regulator
Adjusting Screw (white)
Spring (red)
Pressure
Regulator
Housing
Kit Number Model Orifice P/N Label Spring Kit
CTHN040NP CTHN-40 91910473 91039400 90032600
CTHN060NP CTHN-60 91910444 91039400 90032600
CTHN080NP CTHN-80 91910506 91039400 90032600
CTHN100NP CTHN-100 91910433 91039400 90032600
CTHN125NP CTHN-125 91910490 91039400 90032600
CTHN150NP CTHN-150 91910482 91039400 90032600
CTHN175NP CTHN-175 91910427 91039400 90032600
CTHN200NP CTHN-200 91910423 91039400 90032600

VANTAGE®NP FUEL CONVERSION INSTRUCTIONS
4
SECTION 4: FOR PROPANE TO NATURAL CONVERSIONS ONLY
FIGURE 2: Conversion Kit Regulator Installation in Valve (Propane to Natural)
4.1 Contents of Fuel Conversion Kits (Propane to Natural)
All kits include this manual (P/N 252101NA) and the VANTAGE®NP Installation, Operation and Service
Manual (P/N 152101NA).
Fire Hazard
Check conversion kit part nu ber before proceeding.
Kit part nu ber ust atch the corresponding
odel nu ber.
Failure to follow these instructions can result
in death, injury or property da age.
WARNING
©
This appliance has been converted to _______ fuel.
Orifice:
Manifold Pressure:
Input:
Cet appareil a été converti au:
Injecteur:
Pression à la tubulure d'alimentation:
Débit calorifique:
Printed in the U.S.A./Imprimé aux Etats-Unis P/N 91039400
Sping Kit: P/N 90032700
Gas Conversion Label: P/N 91039400
Orifice: P/N (See Table Below)
Cap Screw (silver)
O Ring (black)
Pressure Regulator
Adjusting Screw (white)
Spring (silver)
Pressure
Regulator
Housing
Kit Number Model Orifice P/N Label Spring Kit
CTHN040PN CTHN-40 91910433 91039400 90032700
CTHN060PN CTHN-60 91910429 91039400 90032700
CTHN080PN CTHN-80 91910421 91039400 90032700
CTHN100PN CTHN-100 91910416 91039400 90032700
CTHN125PN CTHN-125 91910409 91039400 90032700
CTHN150PN CTHN-150 91910403 91039400 90032700
CTHN175PN CTHN-175 91910496 91039400 90032700
CTHN200PN CTHN-200 91910495 91039400 90032700

SECTION 5: FUEL CONVERSION INSTRUCTIONS
5
SECTION 5: FUEL CONVERSION INSTRUCTIONS
NOTE: In order to convert the CTHN-Series heater
for alternate gas, you must access both sides of the
burner. It may be easier to remove the burner to a
workbench; however, it can be converted in place. If
you are converting the burner in place, skip to
Step 5.2.
Step 5.1 Burner Removal
1. Turn off gas supply valve, disconnect gas from
burner.
2. Turn off power supply and disconnect wires from
burner.
3. Unplug thermostat wires from burner.
4. If outside air is installed, disconnect.
5. Remove the bolts which hold the burner on the
transition tube using a 1/2" wrench.
6. Remove the burner. See Figure 3.
7. Save the gasket (P/N 02568200) or re-install a
new one after conversion.
Step 5.2 Door Assembly Removal
Remove thumb screws and set aside. See Page 6,
Figure 4.
FIGURE 3: VANTAGE®NP Burner Assembly Overview
Lock
Washer
Gasket
Burner
Bolt
(Torque 120 in/lb
1 .56 Nm)
S-Hook
Burner Tube

VANTAGE®NP FUEL CONVERSION INSTRUCTIONS
6
FIGURE 4: Burner (external view from below)
FIGURE 5: Burner, Top View (internal assembly)
Install Label
Here
P/N 91039400
Control
Side
Door
(2)
Thumb
Scre s
Vantage
®
NP
by ROBERTS GORDON
Air Side Door
(3) Thumb Scre s
Motor and Blo er Assembly Blo er Inlet Gasket
Air Adapter Collar
Burner Cup
Hot Surface
Igniter
Door S itch
Gas Valve
Orifice
Manifold

SECTION 5: FUEL CONVERSION INSTRUCTIONS
7
Step 5.3 Burner Cup Assembly Removal
and Reassembly
1. Remove the electrode: Remove the electrode
with a 1/4" nutdriver or phillips (+) screwdriver.
2. Remove the air side door. Remove the three
thumb screws and set the door aside. See Page
6, Figure 4.
3. Remove the burner cup. Unscrew the burner
cup and set aside. See Page 6, Figure 5.
4. Remove and replace the gas orifice. Use a 1/2"
open end wrench (spanner) to remove the
orifice. Apply a small amount of pipe sealant to
the threads of the replacement orifice. Be aware
that over application of sealant may cause
blockage of the orifice. Insert and tighten the
replacement orifice.
CAUTION: Do not over-tighten the orifice. The
torque value for the orifice is 15 in/lbs; contact
your factory representative for more details.
5. Be sure gas supply to heater is off.
6. Replace the burner cup. Insure the large
external tooth washer is in place then tighten
the burner cup.
7. Replace the air side door.
8. Replace the electrode.
Step 5.4 Regulator Spring Replacement
See Figure 6.
1. Replace the regulator spring. Using a flat head
screwdriver, remove the cap from the regulator
adjusting screw, remove the screw and remove
and replace the spring.
2. NOTE: Silver spring for Natural, red spring for
Propane.
3. See Page 3, Section 3 and Page 4, Section 4
to verify spring kit components.
4. Replace the adjusting screw and turn down
approximately 1/2".
FIGURE 6: Pressure Regulator
5. If the burner is removed, re-install the gasket
and the burner on the transition tube by
inserting lockwashers and bolts, torque to 120
in/lbs. Reconnect outside air, gas and
electrical supplies. For proper installation
procedures, see Venting, Gas Piping and
Electrical Sections of the VANTAGE®NP
Installation, Operation and Service Manual
(P/N 152101NA) included in this Conversion
Kit.
Cap Screw (black)
O Ring (black)
Pressure Regulator
Adjusting Screw (white)
Spring (Silver for Natural Gas)
(Red for Propane Gas)
Pressure
Regulator
Housing

VANTAGE®NP FUEL CONVERSION INSTRUCTIONS
8
FIGURE 7: Burner, Side View (internal assembly)
Step 5.5 Inlet Gas Pressure Checks
The gas inlet pressure to the heater must be checked
as follows:
1. Turn off electrical supply to heater.
2. Turn off gas supply to heater.
3. Remove the plug at the valve inlet and install a
test tap and hose. Connect the hose to a liquid
filled manometer. See Page 9, Figure 8.
4. Turn on gas supply to heater.
5. The manometer should read a maximum gas
pressure of 14.0" wc for Natural or LP gas.
6. Turn on electrical supply to heater.
7. With heater in operation, manometer should
read a minimum inlet pressure of 4.5" wc for
Natural gas or 11.0" wc for LP gas.
8. If the required maximum and minimum
pressures are not obtained, the main gas
supply pressure to the heater must be adjusted
as necessary.
9. Turn off main gas supply to heater.
10.Turn off electrical supply to heater.
11. Remove manometer and insert pipe plug into
valve.
12.Turn on main gas supply to heater.
13.Leak test plug in tapping using soap solution.
14.Turn on electrical supply to heater.
Step 5.6 Adjust Regulator
1. Using a 3/16" hex key, remove the plug at the
valve outlet and install a test tap and hose.
Connect the hose to a liquid filled manometer.
See Page 9, Figure 8.
NOTE: Insure differential box pressure is .75"
(hot) per Section 17 of the VANTAGE®NP
Installation, Operation and Service Manual (P/N
152101NA). See Page 10, Figure 9.
2. Turn on gas and power, turn up thermostat.
3. When unit comes on; adjust the regulator by
turning the adjusting screw to set the pressure
to:
Natural: 3.5" wc
Propane: 10.5" wc
4. Turn off power and gas.
5. Remove test tap and replace plug at the valve
outlet. Replace O ring and cap screw.
Pressure S itch
Gas Valve
Transformer
Tube Gasket

SECTION 5: FUEL CONVERSION INSTRUCTIONS
9
FIGURE 8: Manometer Reading (Gas Pressure)
10.5" c
Natural Propane
6
5
4
3
2
1
0
1
2
3
4
5
6
3.5" c
6
5
4
3
2
1
0
1
2
3
4
5
6
Top View of Heater
Manometer
Valve Inlet
Valve Outlet
Regulator
WARNING
Electrical Shock Hazard
Disconnect electrical power and as supply before
servicin .
This appliance must be connected
to a properly rounded electrical source.
Failure to follow these instructions can result in
death or electrical shock.

VANTAGE®NP FUEL CONVERSION INSTRUCTIONS
10
FIGURE 9: Manometer Reading (Differential Reading)
6
5
4
3
2
1
0
1
2
3
4
5
6
Manometer
Remove Cap
Attach Manometer Hose
Remove Cap
Attach Manometer Hose
.75" wc
WARNING
Electrical Shock Hazard
Disconnect electrical power and as supply before
servicin .
This appliance must be connected
to a properly rounded electrical source.
Failure to follow these instructions can result in
death or electrical shock.

SECTION 5: FUEL CONVERSION INSTRUCTIONS
11
FIGURE 10: Label P/N 91039400
Step 5.7 Burner Conversion Label Information
Print the requested information in the fields of the
burner conversion label as shown in Figure 10.
Step 5.8 Attach Burner Conversion Label
1. Attach the small yellow gas label (included in
conversion kit) to the gas valve. Attach the
conversion label (P/N 91039400) to the burner
housing. See Page 6, Figure 4.
2. Replace all access doors and secure with
thumbscrews.
Enter Data for Natural to Propane Conversions Enter Data for Propane to Natural Conversions
Model Propane Orifice Size Model Natural Orifice Size
CTHN-40 1.8 mm CTHN-40 #33
CTHN-60 #44 CTHN-60 #29
CTHN-80 2.6 mm CTHN-80 #21
CTHN-100 #33 CTHN-100 #16
CTHN-125 1/8” CTHN-125 #9
CTHN-150 3.4 mm CTHN-150 #3
CTHN-175 #27 CTHN-175 A
CTHN-200 #23 CTHN-200 E
©
This appliance has been converted to _______ fuel.
Orifice:
Manifold Pressure:
Input:
Cet appareil a été converti au:
Injecteur:
Pression à la tubulure d'alimentation:
Débit calorifique:
Propane
10.5" c
From Serial
Plate
Natural
3.5" c
From Serial
Plate
Printed in the U.S.A./Imprimé aux Etats-Unis P/N 91039400

VANTAGE®NP FUEL CONVERSION INSTRUCTIONS
12
SECTION 6: CRITICAL CONSIDERATIONS
6.1 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, which 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 13, Figure 11
through Page 14, Figure 16 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.
• Maintain clearances from heat sensitive material,
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, etc.
• 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 in the heater’s
Installation, Operation and Service manual.
• 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.
WARNING
Fire Hazard
Some objects will catch fire or explode when placed
close to heater.
Keep all flammable objects, liquids and vapors the
required clearances to combustibles away from heater.
Failure to follow these instructions can result in death,
injury or property dama e.

SECTION 6: CRITICAL CONSIDERATIONS
13
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 11: STANDARD REFLECTOR
(inches) (centimeters)
Model A B C D A B C D
CTHN-40 5 20 41 20 13 51 104 51
CTHN-60 5 275127136913069
CTHN-80 5 30 58 30 13 76 147 76
CTHN-100 5 326032138115281
CTHN-125 5 35 65 35 13 89 165 89
CTHN-150 5 397139139918099
CTHN-175 8 44 74 44 20 112 188 112
CTHN-200 8 47 76 47 20 119 193 119
FIGURE 12: ONE SIDE REFLECTOR
(inches) (centimeters)
Model ABCDABCD
CTHN-40 5 6 46 35 13 15 117 88
CTHN-60 5 6 55 44 13 15 140 110
CTHN-80 5 6 64 49 13 15 163 123
CTHN-100 5 6 66 51 13 15 168 128
CTHN-125 5 6 69 58 13 15 175 145
CTHN-150 5 6 75 60 13 15 191 150
CTHN-175 8 6 77 68 20 15 196 170
CTHN-200 8 6 79 70 20 15 201 175
A
C
D
B
FIGURE 13: TWO SIDE REFLECTORS
(inches) (centimeters)
Model ABCDABCD
CTHN-40 5 16 47 16 13 41 119 41
CTHN-60 5 18 56 18 13 46 142 46
CTHN-80 5 21 65 21 13 53 165 53
CTHN-100 5 23 68 23 13 58 173 58
CTHN-125 5 26 73 26 13 66 185 66
CTHN-150 5 30 76 30 13 76 193 76
CTHN-175 8 32 88 32 20 81 224 81
CTHN-200 8 33 90 33 20 84 229 84
A
C
D
B

VANTAGE®NP FUEL CONVERSION INSTRUCTIONS
14
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 14: 45°TILT REFLECTOR
(inches) (centimeters)
Model ABCDABCD
CTHN-40 8 4 35 43 20 10 89 109
CTHN-60 8 4 45 45 20 10 114 114
CTHN-80 9 4 54 55 23 10 137 140
CTHN-100 10 4 57 56 25 10 145 142
CTHN-125 10 4 63 58 25 10 160 147
CTHN-150 10 4 66 61 25 10 168 155
CTHN-175 10 4 69 68 25 10 175 173
CTHN-200 10 4 73 71 25 10 185 180
FIGURE 15: U-TUBE, STANDARD REFLECTOR
(inches) (centimeters)
Model ABCDABCD
CTHN-40 - UNAPPROVED - - UNAPPROVED -
CTHN-60 5 27 56 19 13 69 142 48
CTHN-80 5 30 61 20 13 76 155 51
CTHN-100 5 32 63 20 13 81 160 51
CTHN-125 5 35 66 20 13 89 168 51
CTHN-150 5 39 73 21 13 99 185 53
CTHN-175 8 44 75 26 20 112 191 66
CTHN-200 8 47 76 30 20 119 193 76
FIGURE 16: U-TUBE, 45°
(inches) (centimeters)
Model ABCDABCD
CTHN-40 - UNAPPROVED - - UNAPPROVED -
CTHN-60 8 4 47 40 20 10 119 102
CTHN-80 8 4 54 46 20 10 137 117
CTHN-100 8 4 57 48 20 10 145 122
CTHN-125 8 4 63 53 20 10 160 135
CTHN-150 8 4 66 56 20 10 168 142
CTHN-175 8 4 69 59 20 10 175 150
CTHN-200 8 4 73 63 20 10 185 160
B
C
D
A