Roberts Gorden CoRayVac CRV-B-2 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.
CRV-B-2
CRV-B-4
CRV-B-6
CRV-B-8
CRV-B-9
CRV-B-10
CRV-B-12
CRV-B-12A
P/N 127102NA Rev. L 06/12
CoRayVac®
Custom-Engineered,
Low-Intensity Infrared
Heating Systems
Installation, Operation &
Service 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.
© 2012 Roberts-Gordon LLC
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
www.corayvac.com
www.radiantheaters.com
www.greenhouse-heater.com
www.robertsgordon.com

© 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.
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 ..... 9
4.1 Gas Codes...................................................................9
4.2 Aircraft Hangars ........................................................... 9
4.3 Public Garages ............................................................ 9
4.4 Electrical ...................................................................... 9
4.5 Venting......................................................................... 9
4.6 High Altitude ................................................................ 9
SECTION 5: Major Components .......................................... 10
5.1 Standard Parts List .................................................... 13
SECTION 6: Design Requirements...................................... 16
SECTION 7: Heater Installation............................................ 18
7.1 Tube Installation ........................................................ 20
7.2 Coupling and Tube Assembly.................................... 20
7.3 ElbowPackage Configuration..................................... 21
7.4 Reflector Installation ..................................................22
7.5 Burner Installation...................................................... 25
SECTION 8: Optional Heater Accessories .......................... 26
8.1 Tee Installation .......................................................... 26
8.2 Reflector Joint............................................................ 27
8.3 Reflector Side Extension............................................29
8.4 Universal Shield......................................................... 30
8.5 Barrier Shield.............................................................30
8.6 Two-Foot Decorative Grille Installation....................... 31
8.7 Protective Grille Installation........................................33
8.8 Classic Cast-Iron Components ................................. 34
SECTION 9: Pump Installation and Venting....................... 35
9.1 Pump Installation ....................................................... 35
9.2 General Venting Requirements Model EP-100,
EP-200 and EP-300 Series Pumps ............................ 37
9.3 Horizontal Venting 4" (10 cm) Pipe ............................ 40
SECTION 10: Outside Air Supply.........................................43
10.1 Pressurized .............................................................. 43
10.2 Non-Pressurized ...................................................... 43
10.3 Outside Air Blower Internal Wiring ........................... 44
SECTION 11: Gas Piping...................................................... 47
SECTION 12: Control Methods ............................................ 49
12.1 ROBERTS GORDON®System Control ................... 49
12.2 ROBERTS GORDON®ULTRAVAC™...................... 49
12.3 CORAYVAC®Modulating Controls .......................... 49
12.4 SPST Transformer Relay Kit (P/N 90417600K) ....... 52
12.5 SPDT Transformer Relay (P/N 90436300) .............. 52
SECTION 13: StartingThe System...................................... 63
13.1 Checking the Gas Line ............................................ 63
13.2 Checking the Electrical System ............................... 63
13.3 Starting the System ................................................. 63
13.4 Setting the Vacuum.................................................. 63
SECTION 14: Variable Frequency Drive Programming...... 66
14.1 VFD Parameter Settings For Use With
Modulating Thermostats ......................................... 66
14.2 Altering VFD Parameters ......................................... 67
SECTION 15: CommissioningThe CORAYVAC®
ModulatingSystem ........................................ 68
15.1 Setting The CORAYVAC®End Burner Vacuum....... 68
15.2 Adjusting the Variable Frequency Drive ................... 68
15.3 Programming Of Variable Frequency Drive.............. 69
SECTION 16: Operation and Maintenance.......................... 71
16.1 Sequence of Operation............................................ 71
16.2 To Shut Off Heater ................................................... 71
16.3 To Start Heater ........................................................ 71
16.4 Pre-Season Maintenance and Annual Inspection.... 71
16.5 Maintenance Checklist............................................. 72
SECTION 17: Troubleshooting..............................................74
17.1 Troubleshooting FlowChart...................................... 75
SECTION 18: Replacement Parts ........................................ 77
18.1 Variable Frequency Drive Replacement Parts ......... 79
18.2 Replacement Parts Instructions............................... 80
SECTION 19: General Specifications.................................. 81
19.1 Material Specifications............................................. 81
19.2 Heater Specifications............................................... 81
19.3 Suspension Specifications....................................... 81
19.4 Controls Specifications ............................................ 81
SECTION 20: The ROBERTS GORDON®CORAYVAC®
Limited Warranty ........................................... 83
Printed in U.S.A.
There are references in this manual to various trademarks. All trademarks mentioned herein, whether registered or not, are the
property of their respective owners. Roberts-Gordon LLC is not sponsored by or affiliated with any of the trademark or regis-
tered trademark owners, and make no representations about them, their owners, their products or services. Roberts-Gordon
LLC is not sponsored by or affiliated with BACnet®, LonWorks®or MODBUS®.

TABLE OF FIGURES
Figure 1: Side Panel Label Placement......................................2
Figure 2: Top and Back Panel Label Placement ....................... 3
Figure 3: Standard Reflector ..................................................... 6
Figure 4: One Side Reflector..................................................... 6
Figure 5: Two Side Reflectors ................................................... 6
Figure 6: Universal Shield, Position 1 ....................................... 7
Figure 7: Universal Shield, Position 2 ....................................... 7
Figure 8: Universal Shield, Position 3 ....................................... 7
Figure 9: 2-Foot Deco Grille...................................................... 8
Figure 10: Barrier Shield ........................................................... 8
Figure 11: Protective Grille ........................................................ 8
Figure 12: Major Component Descriptions.............................. 10
Figure 13: Heater Assembly Overview................................... 17
Figure 14: Critical Hanger Placement ..................................... 19
Figure 15: Reflector Joint Detail .............................................. 28
Figure 16: EP-200 Condensate Valve Assembly..................... 35
Figure 17: Condensate Neutralization Tube ............................ 37
Figure 18: Vertical Venting Configuration ................................ 39
Figure 19: EP-100 Horizontal Venting Configurations ............. 40
Figure 20: EP-200 Series Horizontal Venting Configurations .. 41
Figure 21: EP-300 Series Horizontal Venting Configurations .. 42
Figure 22: Duct Sizing ............................................................ 44
Figure 23: Outside Air Blower Internal Wiring Diagram........... 44
Figure 24: Filter Housing Assembly ........................................ 45
Figure 25: Air Supply Blower Support ..................................... 45
Figure 26: Pressurized Outside Air Supply.............................. 46
Figure 27: Non-Pressurized Outside Air Supply...................... 46
Figure 28: Gas Connection with Flexible Gas Hose................ 48
Figure 29: VFD Terminal Strip.................................................51
Figure 30: One Zone Operation without Control Panel
(optional)................................................................ 53
Figure 31: One Zone Operation (with Outside Air Blower)
without Control Panel (optional).............................54
Figure 32: Two Zone Operation without Control Panel
(optional)................................................................ 55
Figure 33: General System Wiring .......................................... 56
Figure 34: External Wiring Diagram EP-100 and
EP-201 120 V 1 Ø Pump........................................ 56
Figure 35: External Wiring Diagram EP-100, EP-201 or
EP-301 230 V 1 Ø Pump (optional)........................ 57
Figure 36: External Wiring Diagram EP-203 or EP-303
208 - 230 V (or 460 V) 3 Ø Pump (optional) .......... 58
Figure 37: CORAYVAC®Modulating Wiring Diagram
[LonWorks®(2-10 Vdc with 500 ohm resistor)
optional] ................................................................. 59
Figure 38: CORAYVAC®Modulating Wiring Diagram
[LonWorks®(4-20 mA) optional] ............................ 60
Figure 39: CORAYVAC®Modulating with BACnet®Wiring
Diagram (optional)................................................. 61
Figure 40: Burner Internal Wiring............................................ 62
Figure 41: Burner Internal Ladder Diagram ............................ 62
Figure 42: Vacuum Reading ................................................... 65
Figure 43: Possible Damper Couplings’ Locations.................. 70
Figure 44: Variable Frequency Drive Components Diagram ... 79
LIST OF TABLES
Table 1: Contents of CRV-Series Burner Carton.................... 13
Table 2: Common CRV-Series Components.......................... 13
Table 3: Modulating Thermostat Cable Requirements ........... 51

SECTION 1: HEATER SAFETY
1 of 83
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.
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, 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 M a n p o we r R e quirements
To p revent 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.

CRV-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
2 of 83
FIGURE 1: Side Panel Label Placement
Control Side Panel
Rating Plate Label
Logo Label
Clearances to Combustibles Label Control Side Panel (inside)
Filter Side Panel (inside)
Wiring Label
Internal Ladder Diagram Label
Description Part Number
Logo Label 91007901
Rating Plate Label 91010401
Clearances to Combustibles Label 91009101
Internal Ladder Diagram Label 91017301
Wiring Label 91017300

SECTION 1: HEATER SAFETY
3 of 83
FIGURE 2: Top and Back Panel Label Placement
Description Part Number
Gas Connection Label 91018125
Burner Box Combination Label 91029600
Proposition 65 Label 91070016

CRV-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
4 of 83
SECTION 2: INSTALLER RESPONSIBILITY
The installer is responsible for the following:
• To ensure the system is designed in accordance
with the parameters of the CRV-Series Design
Manual (P/N 127500NA).
• 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 requirements.
• To furnish all needed materials not furnished as
standard equipment.
• To plan location of supports.
• To provide access to burners on all sides for
servicing or burner removal.
• To provide the owner with a copy of this
Installation, Operation and Service Manual.
• To never use heater as a support for ladder or
other access equipment and to 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 lb
(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
CRV-Series heater (e.g. thermostat or 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.

SECTION 3: CLEARANCES TO COMBUSTIBLES
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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 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 6, Figure 3 through
Page 8, Figure 11 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 followthe 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 lowheat
tolerance (such as plastics, vinyl siding, canvas,
tri-ply, 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.
• 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 19, 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.
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.

CRV-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
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NOTE: 1. All dimensions are from the surfaces of all tubes, couplings, elbows, tees and crosses.
2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from
where the combustion chamber and the tube connect.
.
FIGURE 3: STANDARD REFLECTOR
(inches) (centimeters)
Model ABCDABCD
CRV-B-2 4 20 48 20 11 51 122 51
CRV-B-4 4 20 48 20 11 51 122 51
CRV-B-6 4 20 48 20 11 51 122 51
CRV-B-8 4 20 48 20 11 51 122 51
CRV-B-9 4 36 60 36 11 92 153 92
CRV-B-10 4 366036119215392
CRV-B-12 4 36 60 36 11 92 153 92
CRV-B-12A 4 36 60 36 11 92 153 92
B
CD
A
FIGURE 4: ONE SIDE REFLECTOR
(inches) (centimeters)
Model ABCDABCD
CRV-B-2 4 12 56 20 11 31 143 51
CRV-B-4 4 12 56 20 11 31 143 51
CRV-B-6 4 12 56 20 11 31 143 51
CRV-B-8 4 12 56 20 11 31 143 51
CRV-B-9 4 12 60 42 11 31 153 107
CRV-B-10 4 12 60 42 11 31 153 107
CRV-B-12 4 12 60 42 11 31 153 107
CRV-B-12A 4 12 60 42 11 31 153 107
A
B
C
D
FIGURE 5: TWO SIDE REFLECTORS
(inches) (centimeters)
Model ABCDABCD
CRV-B-2 4 12 56 12 11 31 143 31
CRV-B-4 4 12 56 12 11 31 143 31
CRV-B-6 4 12 56 12 11 31 143 31
CRV-B-8 4 12 56 12 11 31 143 31
CRV-B-9 4 12 60 12 11 31 153 31
CRV-B-10 4 12 60 12 11 31 153 31
CRV-B-12 4 12 60 12 11 31 153 31
CRV-B-12A 4 12 60 12 11 31 153 31
A
B
C
D

SECTION 3: CLEARANCES TO COMBUSTIBLES
7 of 83
NOTE: 1. All dimensions are from the surfaces of all tubes, couplings, elbows, tees and crosses.
2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from
where the combustion chamber and the tube connect.
FIGURE 6: UNIVERSAL SHIELD, POSITION 1
(inches) (centimeters)
Model ABCDABCD
CRV-B-2 4 12 12 12 11 31 31 31
CRV-B-4 4 12 12 12 11 31 31 31
CRV-B-6 4 12 12 12 11 31 31 31
CRV-B-8 4 12 12 12 11 31 31 31
CRV-B-9 8 18 24 18 21 46 61 46
CRV-B-10 8 18241821466146
CRV-B-12 8 18 24 18 21 46 61 46
CRV-B-12A 8 18241821466146
C
A
BD
FIGURE 7: UNIVERSAL SHIELD, POSITION 2
(inches) (centimeters)
Model ABCDABCD
CRV-B-2 4 24 48 24 11 61 122 61
CRV-B-4 4 24 48 24 11 61 122 61
CRV-B-6 4 24 48 24 11 61 122 61
CRV-B-8 4 24 48 24 11 61 122 61
CRV-B-9 4 36 48 36 11 92 122 92
CRV-B-10 4 36 48 36 11 92 122 92
CRV-B-12 4 36 48 36 11 92 122 92
CRV-B-12A 4 36 48 36 11 92 122 92
C
A
BD
FIGURE 8: UNIVERSAL SHIELD, POSITION 3
(inches) (centimeters)
Model ABCDABCD
CRV-B-2 4 12 56 30 11 31 143 77
CRV-B-4 4 12 56 30 11 31 143 77
CRV-B-6 4 12 56 30 11 31 143 77
CRV-B-8 4 12 56 30 11 31 143 77
CRV-B-9 8 12 60 42 21 31 153 107
CRV-B-10 8 12 60 42 21 31 153 107
CRV-B-12 8 12 60 42 21 31 153 107
CRV-B-12A 8 12 60 42 21 31 153 107
C
A
BD

CRV-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
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NOTE: 1. All dimensions are from the surfaces of all tubes, couplings, elbows, tees and crosses.
2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from
where the combustion chamber and the tube connect.
FIGURE 9: 2-FOOT DECO GRILLE
(inches) (centimeters)
Model ABCDABCD
CRV-B-2 4 12 48 12 11 31 122 31
CRV-B-4 4 12 48 12 11 31 122 31
CRV-B-6 4 12 48 12 11 31 122 31
CRV-B-8 4 12 48 12 11 31 122 31
CRV-B-9 4 18 56 18 11 46 143 46
CRV-B-10 4 18 56 18 11 46 143 46
CRV-B-12 4 18 56 18 11 46 143 46
CRV-B-12A 4 18 56 18 11 46 143 46
A
B
CD
FIGURE 10: BARRIER SHIELD
(inches) (centimeters)
Model ABCDABCD
CRV-B-2 4 12 12 12 11 31 31 31
CRV-B-4 4 12 12 12 11 31 31 31
CRV-B-6 4 12 12 12 11 31 31 31
CRV-B-8 4 12 12 12 11 31 31 31
CRV-B-9 - UNAPPROVED - - UNAPPROVED -
CRV-B-10 - UNAPPROVED - - UNAPPROVED -
CRV-B-12 - UNAPPROVED - - UNAPPROVED -
CRV-B-12A - UNAPPROVED - - UNAPPROVED -
C
A
BD
FIGURE 11: PROTECTIVE GRILLE
(inches) (centimeters)
Model ABCDABCD
CRV-B-2 4 20 48 20 11 51 122 51
CRV-B-4 4 20 48 20 11 51 122 51
CRV-B-6 4 20 48 20 11 51 122 51
CRV-B-8 4 20 48 20 11 51 122 51
CRV-B-9 4 36 60 36 11 92 153 92
CRV-B-10 4 36 60 36 11 92 153 92
CRV-B-12 4 36 60 36 11 92 153 92
CRV-B-12A 4 36 60 36 11 92 153 92
A
B
CD

SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES
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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 belowthe 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).

CRV-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
10 of 83
SECTION 5: MAJOR COMPONENTS
The figures in this section provide a general overview
of component placement in a CRV-Series system.
The location of some components such as supports
and couplings is crucial for proper installation.
Assemble the heater components as shown on Page
17, Figure 13.
Optional reflector configurations are shown on Page
6, Figure 3 through Page 8, Figure 11. Install
appropriate suspension hardware, beam clamps,
chain or rod at predetermined locations. Adjustments
of chain length will provide uniform pitch.
FIGURE 12: Major Component Descriptions
Burner Tube
Hot rolled, heat treated or
coated aluminized tube
supplied in 10' (3 m) lengths.
45° Elbow 90° Elbow
End Vent
CouplingAssembly
with Lock
Flex Gas Line
with shut-off cock
Combustion Chamber Tee
Reflector
(Aluminum or
Stainless Steel)
Alternate overlap as
shown on Page 24,
Section 7.4.3. Minimum
overlap is 6" (16 cm).
Reflector with Hole
(Aluminum or
Stainless Steel)
Alternate overlap as
shown on Page 24,
Section 7.4.3. Minimum
overlap is 6" (16 cm).
Tube Adapter
Cross

SECTION 5: MAJOR COMPONENTS
11 of 83
FIGURE 10: Major Component Descriptions (Continued)
Universal Shield with Holes
Reflector Joint
Reflector Side
Extension Bracket
Barrier Shield
Reflector Side Extension
Condensate
Valve
Assembly
Reflector End Cap
(Aluminum or Stainless
Steel)
Punch out center section to
accommodate tube.
S-Hook
Deco Grille
Turnbuckle
Protective Grille
Universal Shield
Tube and Reflector Hanger
Suspend system from these
hangers.
Reflector Support Strap &
Wire Form
Bracket Assembly

CRV-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
12 of 83
FIGURE 10: Major Component Descriptions (Continued)
DANGER
©
P/N 91008001
www.rg-inc.comPrinted in the U.S.A
Imprimé aux Etat-Uni
DANGER
Electrical Shock Hazard
Disconnect electrical
power be ore servicing.
This appliance must be
connected to a properly
grounded electrical source.
Failure to ollow these
instructions can result
in death or electrical shock.
Danger de Choc Électrique
Débrancher le courant
électrique avant toute
révision.
Cet appareil doit être
connecter à une source de
courant avec mise á terre.
Faute de suivre ces
instructions peut entraîner la
mort ou les choc électriques.
Roberts-Gordon
P.O. Box 44
Buffalo, NY 14240-0044
Telepone: 716.852.4400
Fax: [phone]
Toll Free: 800.828.7450
www.rg-inc.com
Roberts-Gordon
76 Main Street West
Unit 10
Grimsby, Ontario L3M 1R6
Canada
Telepone: 905.945.5403
Fax: [phone]
Printed in U.S.A/Imprimé aux Etat-Uni P/N 91008005 Rev B
ROBERTS GORDON
®
UltraVac

Controller
Part Number:
Numéro de la Pièce:
©
ENCLOSED ENERGY
MANAGEMENT EQUIPMENT
58SB
Serial Number:
No. de Série:
Ratings: Input 120V AC, 25A Outputs 120V AC, 3A (8 total)
EP-100 Pump Package - 4" dia
For more information, refer to the EP-100
Installation, Operation and Service Manual
(P/N 127201NA).
EP-201 Pump Package - 4" dia
EP-203 Pump Package - 4" dia
For more information, refer to the EP-200
Series Installation, Operation and Service
Manual (P/N 127200NA).
EP-301 Pump Package - 4" dia
EP-301 Pump Package - 6" dia
EP-303 Pump Package - 4" dia
EP-303 Pump Package - 6" dia
For more information, refer to the
EP-300 Series Installation, Operation and
Service Manual (P/N 127202NA).
System Control
ROBERTS GORDON®
ULTRAVAC™ Controller
ROBERTS GORDON®
ULTRAVAC™
Adjustable Indoor Sensor
ROBERTS GORDON®
ULTRAVAC™
Variable Frequency Drive
Outdoor Sensor
(P/N 10081501)

SECTION 5: MAJOR COMPONENTS
13 of 83
5.1 Standard Parts List
Table 1: Contents of CRV-Series Burner Carton
* Canadian Models: Rubber (Type 1) Gas Hoses
available as an accessory. See Page 48, Figure 28.
Table 2: Common CRV-Series Components
Part No. Description
0270XXXX Burner (Rate and Fuel Varies)
*91412200 Flexible Stainless Steel Gas Hose, 1/2" NPT
(US models only)
013676XX End Vent Plate
01397300 Accessory Package
01361200 Filter Support Disk
01367800 Combustion Chamber Gasket
02724901 Door Assembly w/ Hole
91115100 Screw #10 - 24 x 5/8
91119500 U-Clip
91905500 Filter Support
92123900 Nut 5/16 - 18
92511601 Wing Nut #10 - 24
96411600 Lock Washer 5/16"
01312401 Filter and Gasket
Part No. Description
Combustion Chambers
02722300-1P Hot Rolled Steel Combustion Chamber
02722301-1P Heat-Treated Aluminized Steel Combustion Chamber
0272230D-1P Porcelain Coated Steel Combustion Chamber
02721200-1P Cast Iron Combustion Chamber
Part No. Description
Tubing and Related Accessories
01312700 Coupling, 4" (10 cm) Plain
01312706 Coupling, 6" (15 cm) Plain
0131270I Coupling, 4" (10 cm) Lined
01331900 Coupling, 4" (10 cm) Damper
E0009356 Coupling, 6" (15 cm) Damper
0133022D Tee, 4" (10 cm) Coated
01330203 Tee, 4" (10 cm) Aluminized
01330204 Tee, 6" (15 cm) Aluminized
0133092D Cross, 4" (10 cm) Coated
01330903 Cross, 4" (10 cm) Aluminized
01330904 Cross, 6" (15 cm) Aluminized
01335801 Elbow, 4" (10 cm) Aluminized 90°
T0100320 Elbow, 6" (15 cm) Aluminized 90°
0133580D Elbow, 4" (10 cm) Coated 90°
01336101 Elbow, 4" (10 cm) Aluminized 45°
0133610D Elbow, 4" (10 cm) Coated 45°
91409300 Tube, Hot Rolled Steel 4" (10 cm) dia 10' (3 m)
91409403 Tube, Non-Heat Treated Aluminized 4" (10 cm)
dia 10' (3 m)
91409408 Tube, Heat Treated Aluminized 4" (10 cm) dia 10' (3 m)
91409420 Tube, Non-Heat Treated Aluminized 6" (15 cm)
dia 10' (3 m)
9141030D Tube, Coated 4" (10 cm) dia 10' (3 m)
E0009105 Tube, Heat Treated Aluminized 6" (15 cm) dia 10' (3 m)
Part No. Description
91418200 Tube Adapter, Aluminized
6" (15 cm) dia x 4" (10 cm) dia
02722100 Adapter, 4" (10 cm) Cast Iron
02726000K Lower Tube Temperature Insert
91240010 Tube Hanger, 6" (15 cm)
91308001 High Temperature Pipe Compound, 1lb. can
Part No. Description
Venting Accessories
01324401 Outside Air Supply Takeoff, 4" (10 cm)
01326801 Outside Air Filter Housing
90707501 Air Supply Blower/Power Venter
91409601 Outside Air Flex Duct, 4" (10 cm)
(Box of 8 - 8' [2.4 m] sections)
Part No. Description
Reflectors and Related Accessories
01329910 Reflector Side Extension Support
03050010 Reflector Support Package (Tubing)
02712700 Reflector Side Extension, 2 Clips, 2 Screws
02716400 Reflector Support Package (Schedule 40 Pipe)
02750303 Reflector, Aluminum
027503SS Reflector, Stainless Steel
02750304 Reflector, Aluminum with Hole
027503SH Reflector, Stainless Steel with Hole
02750800 Reflector End Cap, Aluminum
027508SS Reflector End Cap, Stainless Steel
027508SH Reflector End Cap, Stainless Steel with Hole
02750900 Reflector Joint
027509SS Reflector Joint, Stainless Steel
027127SS Reflector Side Extension, Stainless Steel
03090100 Tube and Reflector Hanger
02790300 Tube and Reflector Hanger, Cast Iron
91907302 S-Hook
91903201 Turnbuckle
91903300 Spring Hook
91903202 Turnbuckle with Eyebolt
02712100 Universal Shield Support
02751800 Universal Shield with Holes
02751801 Universal Shield
027518SS Universal Shield, Stainless Steel
Part No. Description
Control Packages and Accessories
10001501 Water Resistant Sensor
02770002 System Control
ULTRAVAC™ Control Packages
URVCCM ROBERTS GORDON®ULTRAVAC™Central Controller
(with Modem Chip & Software) Includes:
URVSC ROBERTS GORDON®ULTRAVAC™Controller
10080142 Modem Chip
10080450 Comms Equalization Cable
10081501 Outdoor Sensor
10080410 PC Connection Cable Package

CRV-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
14 of 83
URVCCR ROBERTS GORDON®ULTRAVAC™Central Controller
(with RS-485 Converter & Software) Includes:
Part No. Description
URVSC ROBERTS GORDON®ULTRAVAC™Controller
10080142 Modem Chip
10080450 Comms Equalization Cable
10080430 RS-485 Converter with 9 V Power Supply
10081501 Outdoor Sensor
10080410 PC Connection Cable Package
URVCCL ROBERTS GORDON®ULTRAVAC™Central Controller
(with TCP/IP Communication Module & Software)
Includes:
URVSC ROBERTS GORDON®ULTRAVAC™Controller
10080142 Modem Chip
10080450 Comms Equalization Cable
10080440 TCP/IP Communication Module
10081501 Outdoor Sensor
10080410 PC Connection Cable Package
URVBNC Controller, ROBERTS GORDON®ULTRAVAC™
BACnet®
URVSC Controller, ROBERTS GORDON®ULTRAVAC™,
1 Pump 3 Zones (Satellite Control)
URVU Controller, ROBERTS GORDON®ULTRAVAC™, Unitary
Variable Frequency Drive Assemblies
VFD75115 VFD Assembly, .75 HP, 115 V, 1 Ø Input
VFD75230 VFD Assembly, .75 HP, 230 V, 1 Ø Input
VFD20230 VFD Assembly, 2 HP, 230 V, 1 Ø Input
VFD75115N4
VFD Assembly, .75 HP, 115 V, 1 Ø Input, NEMA 4
VFD75230N4
VFD Assembly, .75 HP, 230 V, 1 Ø Input, NEMA 4
VFD75460
VFD Assembly, .75 HP, 460 V, 3 Ø Input
VFD75460N4 VFD Assembly, .75 HP, 460 V, 3 Ø Input, NEMA 4
VFD20230N4 VFD Assembly, 2 HP, 230 V, 1 Ø Input, NEMA 4
VFD20460
VFD Assembly, 2 HP, 460 V, 3 Ø Input
VFD20460N4 VFD Assembly, 2 HP, 460 V, 3 Ø Input, NEMA 4
ULTRAVAC™ Accessories
10080142 Modem, Plug-In Chip
10080410 Cable Package, PC Connection
10080430 RS-485 Converter with 9V Power Supply
10080440 TCP/IP Communication Module
10081500 Sensor, Adjustable Indoor, Deg F, ROBERTS GORDON®
ULTRAVAC™Controller
10081501 Sensor, Outdoor, ULTRAVAC™
10081502 Sensor, Adjustable Indoor, Deg C, ULTRAVAC™
90602450 Voltage Surge Suppressor 277/480 V
90602451 Voltage Surge Suppressor 120 V
90602452 Voltage Surge Suppressor 120/240 V 1 Ø 60 Hz
90602460 Line Reactor 480 V 3 Ø 60 Hz w/Enclosure (Output)
90602461 Line Reactor 230 V 3 Ø 60 Hz .75 HP (Output)
90602462 Line Reactor 230 V 3 Ø 60 Hz 2 HP (Output)
90602470 Line Reactor 480 V 3 Ø 60 Hz 4 A w/Enclosure (Input)
Part No. Description
Thermostats
05023000 Load Relay Package
90417600K Transformer Relay - SPST (12 A)
90436300 Transformer Relay - SPDT (12 A)
90423000 24 V Low Voltage Thermostat (Marked 1-5)
90424300 Thermostat Guard
Part No. Description
90425104 Thermostat, Modulating LonWorks®
90425105 Thermostat, Modulating
90425109 Thermostat, Modulating BACnet®
90429107 Thermostat, On/Off BACnet®
10081520 Sensor, Remote Modulating
10081521 Sensor, Outdoor Modulating
Part No. Description
Deco Grille (2' x 4' [.6 m x 1.2 m])
01365900 Shield Frame
01370408 Reflector Side Extension 8" x 48" (20.3 cm x 122 cm)
01370412 Reflector Side Extension 12" x 48" (30.5 cm x 122 cm)
01370416 Reflector Side Extension 16" x 48" (40.6 cm 122 cm)
91407000 Grille, Aluminum 2' x 4' (.6 m x 1.2 m)
Part No. Description
Protective Grille
08050001 Protective Grille, 40" (1 m)
08050002 Protective Grille End Cap
Part No. Description
Shields
02750303 Barrier Shield
02751801 Universal Shield
027518SS Universal Shield, Stainless Steel
02751800 Universal Shield with Holes
Part No. Description
Pump Packages and Accessories
02719105 EP-100 Pump Package
02719100 EP-100 Pump
02724700 Accessory Package
02716305 EP-201 Pump Package
01312001 EP-201 Pump
01317805 Accessory Package
02712034 EP-203 Pump Package
01312002 EP-203 Pump
01317805 Accessory Package
02723014 EP-301 Pump Package 4"
02730101 EP-301 Pump Assembly
02730104 Accessory Package
02723016 EP-301 Pump Package 6"
02730101 EP-301 Pump Assembly
02730106 Accessory Package
02723034 EP-303 Pump Package 4"
02730103 EP-303 Pump Assembly
02730104 Accessory Package
02723036 EP-303 Pump Package 6"
02730103 EP-303 Pump Assembly
02730106 Accessory Package