Roberts Gorden AG15ST, AG20ST, AG30ST, AG35ST, AG25ST 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 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.

Roberts-Gordon Europe Limited

Unit A, Kings Hill Business Park
Darlaston Road, Wednesbury
West Midlands, WS10 7SH UK
Telephone: [phone]
Fax: [phone]
Service Telephone: [phone]
Service Fax: [phone]

E-mail: [e-mail]
E-mail: [e-mail]

www.brooder-heater.com

WARNING

Installation must be done by a registered installer/
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.

© 2011 Roberts-Gordon Europe Ltd

Blackheat

®

AG

Vacuum Assisted

Linear and Double Linear

Gas Fired Heating

Systems

Installation, Operation &

Service Manual

For Agricultural Use

IP55 Protected Burner Box

AG15ST
AG20ST
AG25ST
AG30ST
AG35ST
AG40ST
AG45ST
AG50ST

AG30DL
AG40DL
AG50DL
AG60DL
AG70DL

170103UK Rev B 04/11

TABLE OF CONTENTS

SECTION 1: Heater Safety ............................................2

1.1 Manpower Requirements ....................................2

1.2 IP55 Protection....................................................2

1.3 Safety Labels and Their Placement ....................2

SECTION 2: Installer Responsibility............................4

2.1 Low Level User Instructions................................4

2.2 Corrosive Chemicals...........................................4

2.3 National Standards and Applicable Codes .........4

SECTION 3: Clearance To Combustibles ....................5

3.1 Required Clearances to Combustibles ...............5

3.2 Clearance Data - Linear and Double Linear .......6

SECTION 4: Major Component Descriptions..............8

SECTION 5: General Suspension Details ...................9

SECTION 6: Linear & Double Linear Heater

Installation .............................................. 11

6.1 Linear Standard Parts List ................................ 11

6.2 Double Linear Standard Parts List....................14

6.3 Burner Tube Installation ...................................17

6.4 Coupling and Tube Assembly...........................17

6.5 Tube Clamp Package Installation .....................19

6.6 Reflector Installation .........................................20

SECTION 7: Burner & Fan Installation ......................22

7.1 Burner Installation.............................................22

7.2 IP55 Fan Assembly ..........................................23

7.3 Linear Fan Installation ......................................23

7.4 Double Linear Fan Installation ..........................24

SECTION 8: Optional Heater Accessories ................26

8.1 Reflector Side Extension Installation ................27

8.2 Decorative Grille Installation .............................28

8.3 Protective Grille Installation...............................29

8.4 Sports Hall Guard Installation...........................30

8.5 Undershield Installation ....................................31

8.6 Wall Mounting...................................................32

SECTION 9: Venting and Fresh Air Supply ...............33

9.1 Type C12 , C32 & C62 Appliance .....................33

9.2 Type B22 Appliance ..........................................33

9.3 Flue Installation ................................................33

9.4 Ventilation Requirements ..................................33

9.5 Fresh Air Supply ...............................................33

9.6 Outside Combustion Air Supply........................34

9.7 Common Duct...................................................35

SECTION 10: Gas Piping ............................................36

SECTION 11: Wiring ....................................................38

11.1 Typical External Wiring Diagram (Linear) ........38

11.2 Typical External Wiring Diagram

(Double Linear Option 1) ................................. 39

11.3 Typical External Wiring Diagram

(Double Linear Option 2) .................................39

11.4 Internal Wiring Diagram ..................................40

SECTION 12: Operation..............................................41

12.1 Heater Lockout Indication (Optional) .............. 41

12.2 Testing ............................................................ 42

12.3 Commissioning (Multiburner)..........................42

12.4 System Checks ............................................... 42

12.5 User Instructions.............................................42

SECTION 13: Servicing Instructions .........................43

13.1 Annual Procedure ...........................................43

13.2 Sealing Gaskets ............................................. 43

13.3 Component Removal......................................43

13.4 Maintenance Checklist.................................... 44

SECTION 14: Troubleshooting ................................... 46

14.1 Troubleshooting Flow Chart

(Linear and Double Linear)............................. 47

14.2 Manifold Gas Pressure Setting .......................49

SECTION 15: Replacement Parts............................... 50

15.1 Replacement Packages ..................................52

SECTION 16: Specifications.......................................53

16.1 Material Specifications....................................53

16.2 Heater Specifications......................................53

16.3 Venting Specifications.....................................53

16.4 Suspension Specifications..............................53

16.5 Controls Specifications ................................... 53

16.6 Linear Heater..................................................54

16.7 Double Linear Heater...................................... 54

16.8 Burner Specifications......................................55

© 2011

Roberts-Gordon Europe Limited

Printed in U.K.

TABLE OF FIGURES

Figure 1: Bottom and Back Panel Label Placement ........3

Figure 2: Control Side Label Placement..........................3

Figure 3: Linear & Double Linear, Horizontal Mounts......6

Figure 4: Linear & Double Linear, One Side Reflector ....6

Figure 5: Linear & Double Linear, Two Side Reflectors ...6
Figure 6: Linear & Double Linear, 2 Foot Deco Grille &

Protective Grille ................................................7

Figure 7: Undershield ** ..................................................7

Figure 8: Linear & Double Linear, Venting.......................7

Figure 9: Critical Hanger Placement .............................10

Figure 10: Linear General Assembly Overview............. 12

Figure 11: Linear Layout Overview................................13

Figure 12: Double Linear General Assembly Overview.15

Figure 13: Double Linear Layout Overview ...................16

Figure 14: Linear (Horizontal)........................................32

Figure 15: Linear (Rear View) .......................................32

Figure 16: Individual Flue Connection Detail.................34

Figure 17: Flue Connection Dimensions .......................34

Figure 18: Air Supply with Flue Configurations..............35

Figure 19: Gas Connection with Stainless Steel Flex

Connector.....................................................37

Figure 20: Sequence of Operation Chart ......................41

Figure 21: Burner Cup Position.....................................44

Figure 22: Linear Specifications....................................55

1

Product Approval

ROBERTS GORDON® appliances have been tested and CE certified as complying with the essential
requirements of the Gas Appliance Directive, the Low Voltage Directive, the Electromagnetic
Compatibility Directive and the Machinery Directive for use on natural gas and LPG when installed,
commissioned and maintained in accordance with these instructions.

These instructions refer to appliances designed to operate in the European Union.
Appliances designed for other countries (Non-European Union) are available on request.
This appliance must be installed in accordance with the local and national codes in force and used

only in a sufficiently ventilated space, as specified in these instructions.
Before installation, check that the local gas distribution systems, nature of gas and pressure, and

adjustment of the appliance are compatible.

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

2

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 registered installer/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, 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 the local distribution
conditions, nature of gas and pressure, and adjustment of
the appliance are compatible.

The heater must be applied and operated under the gen­eral concepts of resonable use.

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 Europe
Limited.

1. 1 M a n p ow er Re quirements

To p revent personal injury and damage to the heater, two
persons will be required for installation.

1.2 IP55 Protection

The burner is certified to protection class of IP55. This
means that the internal components of the burner are
protected against extreme dusty atmosphere and water
jets from all sides. Outside air supply and flue are
mandatory for this heater. The standard exhaust fans
mentioned in this manual do NOT have IP55 protection
and must be outside the wet environment. If the fan is to
be installed in the wet environment, a special IP54
protected fan must be used. Consult Roberts-Gordon
LLC for alternative exhaust fans. Optional stainless steel
burner box provides long life in the most corrosive
applications. Always ensure that the environment to be
heated is not of an explosive or flammable nature. For

more information, please consult your ROBERTS
GORDON

®

representative.

In order to have trouble free performance of your
BLACKHEAT

®

AG heater and maintain the IP55
protection, follow all instructions in this manual, especially
the replacement of sealing gaskets.

1.3 Safety Labels and Their Placement

Product safety signs or labels should be replaced by
the product user when they are no longer are
legible. Please contact Roberts-Gordon LLC or your
ROBERTS GORDON

®

independent distributor to
obtain replacement signs or labels. See Page 3,
Figure 1 through Page 3, Figure 2.

SECTION 1: HEATER SAFETY

3

Figure 1: Bottom and Back Panel Label Placement

Figure 2: Control Side Label Placement

Logo Label

Fan/Burner Label

Bottom Panel

Rating Plate Label

Back Panel

Model No.

Serial No.

Appliance Type

Gas Pressure
at Manifold

Normal Input Rating
(Net Calorific Value)

Min. Input Rating
(Net Calorific Value)

Country of
Destination

Year of
Production

Category

Orifice Size

Electrical
Rating

V

Hz

W

Gas Type

Infrared Radiant Tube Heater

This applicance must be installed in accordance with the

rules in force, and used only in a sufficiently ventilated space.

Consult instructions before installation and use of this applicance.

0063

Model No.

Serial No.

Appliance Type

Gas Pressure
at Manifold

Normal Input Rating
(Net Calorific Value)

Min. Input Rating
(Net Calorific Value)

Country of
Destination

Year of
Production

Category

Orifice Size

Electrical
Rating

V

Hz

W

Gas Type

Infrared Radiant Tube Heater

This applicance must be installed in accordance with the

rules in force, and used only in a sufficiently ventilated space.

Consult instructions before installation and use of this applicance.

0063

Description Part Number

Logo Label 91033200
Rating Plate Label 91031300
Fan/Burner Label 91033300

Top Panel

Gas Connection Label

Description Part Number

Logo Label 91033200
Wiring Diagram Label 91031404
Gas Connection Label 91018122

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

4

SECTION 2: INSTALLER RESPONSIBILITY

• To install the heater, as well as the gas and electrical
supplies, in accordance with applicable specifications
and codes. Roberts-Gordon LLC recommends the
installer contact a local Building Inspector or Fire
Marshal for guidance.

• To use the information given in a layout drawing and
in the manual together with the cited codes and
regulations to perform the installation.

• To install the heater in accordance with the clear­ances to combustibles.

• To furnish all needed materials not furnished as
standard equipment.

• To plan location of supports.

• To provide access 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 ensure there is adequate air circulation around the
heater and to supply air for combustion, ventilation
and distribution in accordance with local codes.

•

To ensure the heater is placed in an approved
application.

2.1 Low Level User Instructions

In all situations, clearances to combustibles must be
maintained. Signs should be posted in storage areas to
specify the maximum stacking height of items placed
below heater to maintain required clearances to
combustibles. Minimum clearances must be maintained
from vehicles parked below the heater. Caution should be
used when running the system near combustible
materials such as wood, paper, rubber, etc. Consideration
should be given to partitions, storage racks, hoists,
building construction, etc.

A laminated wall tag is available for the heater as a
permanent reminder of the safety instructions and the
importance of the required clearances to combustibles.
Please contact Roberts-Gordon LLC or your ROBERTS
GORDON

®

independent distributor to obtain the wall tag.
Affix the tag by peeling off the backing of the adhesive
strips on the rear surface and position the tag on a wall
near the heater (e.g. thermostat).

A copy of the wall tag (P/N 91037912) is illustrated on the
back cover. This copy of the wall tag can be affixed 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. Write the
largest clearance dimensions with 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 sub­contractor, 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 lifes­pan 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.

The heater must not be operated in environmental
temperatures below 0° C.

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: CLEARANCE TO COMBUSTIBLES

5

SECTION 3: CLEARANCE TO COMBUSTIBLES

3.1 Required Clearances to Combustibles

Clearances are the required distances that combustible
objects must be away from the heater to prevent fire
hazards. Caution should be used when running the
system near combustibles. 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 Page 6,
Figure 3 through Page 7, Figure 8 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 petrol or other combustible materials including
flammable objects, liquids, dust or vapours away from
this heater or any other appliance.

• The stated clearances to combustibles represents a
surface temperature of 32°C (90°) above room tem-
perature. Building materials with a low heat 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 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, 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 Building Inspector, Fire Insurance
Carrier or other authorities for approval of proposed
installation when there is a possibility of exposure to
combustible airborne materials or vapours.

• Hang heater in accordance to the minimum
suspension requirements on Page 9, Section 5.

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.

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

6

3.2 Clearance Data - Linear and Double Linear

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

2. Clearances B, C and D can be reduced by 50% after 7500 mm of tubing downstream
from the burner.

3. All measurements are in millimeters.

FIGURE 3: LINEAR & DOUBLE LINEAR, HORIZONTAL MOUNTS

Model

AG15ST

AG30DL

AG20ST

AG40DL

AG25ST

AG50DL

AG30ST

AG60DL

AG35ST

AG70DL

AG40ST

AG45ST

AG50ST

A 150 150 150 150 150 150 200 200

B 1024 1116 1116 1173 1346 1403 1472 1530

C 1570 1650 1650 1780 1930 1970 2010 2080

D 1024 1116 1116 1173 1346 1403 1472 1530

FIGURE 4: LINEAR & DOUBLE LINEAR, ONE SIDE REFLECTOR

Model

AG15ST

AG30DL

AG20ST

AG40DL

AG25ST

AG50DL

AG30ST

AG60DL

AG35ST

AG70DL

AG40ST

AG45ST

AG50ST

A 150 150 150 150 150 150 200 200

B 265 265 265 265 265 265 265 265

C 1580 1760 1760 1930 2090 2130 2160 2240

D 1380 1587 1587 1725 1909 1967 2024 2139

A

C

D

B

FIGURE 5: LINEAR & DOUBLE LINEAR, TWO SIDE REFLECTORS

Model

AG15ST

AG30DL

AG20ST

AG40DL

AG25ST

AG50DL

AG30ST

AG60DL

AG35ST

AG70DL

AG40ST

AG45ST

AG50ST

A 150 150 150 150 150 150 200 200

B 678 736 736 793 943 989 1024 1173

C 1660 1810 1810 1960 2110 2160 2210 2320

D 678 736 736 793 943 989 1024 1173

A

C

D

B

SECTION 3: CLEARANCE TO COMBUSTIBLES

7

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

2. Clearances B, C and D can be reduced by 50% after 7500 mm of tubing downstream
from the burner.

3. All measurements are in millimeters.

** When installed in the first 3 m.

FIGURE 6: LINEAR & DOUBLE LINEAR, 2 FOOT DECO GRILLE & PROTECTIVE GRILLE

Model

AG15ST

AG30DL

AG20ST

AG40DL

AG25ST

AG50DL

AG30ST

AG60DL

AG35ST

AG70DL

AG40ST

AG45ST

AG50ST

A 150 150 150 150 150 150 200 200

B 1024 1116 1116 1173 1346 1403 1472 1530

C 1570 1650 1650 1780 1930 1970 2010 2080

D 1024 1116 1116 1173 1346 1403 1472 1530

A

C

D

B

FIGURE 7: UNDERSHIELD **

Model

AG15ST

AG30DL

AG20ST

AG40DL

AG25ST

AG50DL

AG30ST

AG60DL

AG35ST

AG70DL

AG40ST

AG45ST

AG50ST

A 150 150 150 150 150 150 - -

B 1139 1173 1461 1461 1576 1610 - -

C 840 965 11 20 112 0 1220 1270 - -

D 1139 1173 1461 1461 1576 1610 - -

A

C

D

B

FIGURE 8: LINEAR & DOUBLE LINEAR, VENTING

Model

AG15ST

AG30DL

AG20ST

AG40DL

AG25ST

AG50DL

AG30ST

AG60DL

AG35ST

AG70DL

AG40ST

AG45ST

AG50ST

E 1000 1000 1000 1000 100 0 1000 1000 1000

F 500 500 500 500 500 500 500 500

Radiant tubes

Fan

Unvented

Vented

E

F

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

8

SECTION 4: MAJOR COMPONENT DESCRIPTIONS

Burner (shown with Tube
Gasket)

Must be installed with the
flame observation window
facing down.

Reflector
(Aluminium or
Stainless Steel)

Alternate overlap as
shown on overview.
Minimum overlap is 160 mm.

Coupling Assembly
with Lock

Reflector End Cap

Punch out center section to
accommodate tube.

Fan Assembly (Includes Flange)

Fan assembly is attached to the last
section of tubing (fan tube).

Tube and Reflector Hanger

Suspend system from these
hangers.

Flex Gas Line

Tube

Heat treated aluminised tube
supplied in 3000 mm lengths.

Burner Tube

Supplied in 3000 mm lengths.
Burner tube is always the first
tube after the burner.

Reflector Support Strap, Wire
Form & #8 x 3/4 Screw

Fan Tube with Internal Swirler

Supplied in 3000 mm lengths. Fan
tube is always the last tube on the
heater where the fan is attached.
The swirler is welded inside of the
tube end.

Fan Flange Assembly
and Screws

Height
Adjuster

Bow
Shackle

Tee
Assembly

Damper Flange Assembly

For use on Multiburner Systems.

Tube and Reflector Hanger
with Clamp Package

Position this hanger no more
than 100 mm away from the
burner assembly.

Spring
Hook

S-hook

SECTION 5: GENERAL SUSPENSION DETAILS

9

SECTION 5: GENERAL SUSPENSION DETAILS

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 it 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 manual.

The minimum and maximum gas inlet pressures must be
maintained as indicated on the rating plate. Typical
installation configurations are shown in Figure 9.

NOTE: Some models may receive S-hooks (P/N

91907302) or spring hooks (P/N91903300), rather than
bow shackles.

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.

WARNING

Cut/Pinch Hazard

Wear protective gear during installation,
operation and service.

Edges are sharp.

Failure to follow these instructions can result
in injury.

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

10

Figure 9: Critical Hanger Placement

Description Part Number

Burner Tube 03051100
S-hook 91907302
Spring Hook 91903300
Bow Shackle E0007576
Tube/Reflector Hanger 03090101

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

11

SECTION 6: LINEAR & DOUBLE LINEAR
HEATER INSTALLATION

The figures in this section provide a general overview of
component placement in a BLACKHEAT

®

AG Linear and
Double Linear system. The location of some components
such as supports and couplings is crucial for proper
installation. Assemble the heater components as shown
on Page 12, Figure 10.

For optional reflector configurations for linear heaters see
Page 6, Figure 3 through Page 7, Figure 8. Install
appropriate suspension hardware, beam clamps, chain or
rod at predetermined locations. Adjustments of chain
length will provide uniform pitch.

If any step is unclear, please contact Roberts-Gordon
LLC at [phone].

6.1 Linear Standard Parts List

* PVC coating must be removed prior to installation.

** Some models may receive S-hooks (P/N 91907302) or
spring hooks (P/N91903300), rather than bow shackles.

Part No. Description

AG15ST

AG20ST

AG25ST

AG30ST

AG35ST

AG40ST

AG45ST

AG50ST

035XXXXX Burner Assembly (Input and Fuel Varies) 1 1 111111

07260051 Fan Package 1 IP55 1 1 1 1 1 - - -

07260053 Fan Package 3 IP55 - ----111

03051100Burner Tube, 100 mm x 3048 mm 11111111

91409408Tube, 100 mm x 3048 mm -1122233

S5127WFan Tube, 100 mm x 3048 mm, with 3048 mm Swirler -1111111

S5134WFan Tube, 100 mm x 3048 mm, with 2134 mm Swirler 1-------

01329600Standard Coupling Assembly 12233344

01329700Coupling Lock 12233344

02750303Reflector, Aluminium, 2439 mm 34466677

027503SSReflector, Stainless Steel, 2439 mm (Optional)* 34466677

02750800Reflector End Cap, Aluminium 22222222

027508SHReflector End Cap, Stainless (Optional)* 22222222

03090101Tube and Reflector Hanger, Wide Pattern 34455566

01318901Tube Clamp Package (including Nut, Washer & Bolt) 11111111

91908004Wire Form 23355566

94320812 Screw #8 x 3/4, (Goes with 03050001) 4 6 6 10 10 10 12 12

03050001Reflector Support Strap, Wide Pattern 23355566

E0007576Bow Shackle** 34455566

91107720 U-Clip Package (20 Pieces) 1 1 111111

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

12

Figure 10: Linear General Assembly Overview

Vent Cap or

Bird Screen

Outside Wall

Fan Tube

Reflector

Reflector End Cap

Reflector Support

Burner

Coupling

U-Clips

Burner Tube

Tube and Reflector Hanger

Tube Clamp

Package

Fan Assembly*

(For Single Heater)

Damper Assembly

(Required for Multiburner)

*NOTE: Locate fan away from wet environment

or use the IP54 protected fan.

Fresh Air

Supply

Internal Swirler

Weld Spot

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

13

Figure 11: Linear Layout Overview

Model AG15ST AG20ST AG25ST AG30ST AG35ST AG40ST AG45ST AG50ST

Reflector
Overlap
(approx.)

700 mm 250 mm 250 mm 530 mm 530 mm 530 mm 330 mm 330 mm

a = reflector width (not shown) - 365 mm
b = end cap to burner/fan - 50 mm
c = end cap to hanger - 50 mm
d = distance first hanger - 2290 mm

e = distance typical between hangers - 3050 mm

f = burner height - 241 mm

g = burner length - 445 mm

Burner

Reflector

Tube

Tube/Reflector
Hanger

Coupling
Assembly

Fan
Assembly

LEGEND

Damper
Assembly

AG20ST
AG25ST

c

b

de

b

e

AG30ST
AG35ST
AG40ST

c

b

de

b

e e

AG45ST
AG50ST

c

b

de

b

e e e

g

c

b

de

b

AG15ST

f

g

f

g

f

g

f

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

14

6.2 Double Linear Standard Parts List

* PVC coating must be removed prior to installation.

** Some models may receive S-hooks (P/N 91907302) or
spring hooks (P/N91903300), rather than bow shackles.

Part No.

Description

AG30DL

AG40DL

AG50DL

AG60DL

AG70DL

035XXXXX Burner Assembly (Input and Fuel Varies) 2 2 2 2 2

07260053 Fan Package 3 IP55 1 1 1 1 1

03051100 Burner Tube, 100 mm x 3048 mm 2 2 2 2 2

91409408 Tube, 100 mm x 3048 mm - 2 2 4 4

S5127W Fan Tube, 100 mm x 3048 mm, with 3048 mm Swirler - 2 2 2 2

S5134W Fan Tube, 100 mm x 3048 mm, with 2134 mm Swirler 2 - - - -

E0009170 Tee, 100 mm x 100 mm x 100 mm 1 1 1 1 1

01329600 Standard Coupling Assembly 6 8 8 10 10

01329700 Coupling Lock 6 8 8 10 10

02750303 Reflector, Aluminium, 2439 mm 6 8 8 12 12

027503SS Reflector, Stainless Steel, 2439 mm (Optional)* 6 8 8 12 12

02750800 Reflector End Cap, Aluminium 4 4 4 4 4

027508SH Reflector End Cap, Stainless (Optional)* 4 4 4 4 4

03090101 Tube and Reflector Hanger, Wide Pattern 6 8 8 10 10

01318901 Tube Clamp Package (including Nut, Washer & Bolt) 2 2 2 2 2

91908004 Wire Form 4 6 6 10 10

03050001 Reflector Support Strap, Wide Pattern 4 6 6 10 10

E0007576 Bow Shackle** 6 8 8 10 10

91107720 U-Clip Package (20 Pieces) 2 2 2 2 2

E0007582 Height Adjuster 6 8 8 10 10

94320812 Screw #8 x 3/4, (Goes with 03050001) 8 12 12 20 20

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

15

Figure 12: Double Linear General Assembly Overview

Vent Cap or

Bird Screen

Fresh Air

Supply

1200 mm approx.

Fan Tube

Burner

Fresh Air

Supply

Tube Clamp Package

Reflector

Reflector End Cap

Reflector Support

Coupling

Fan Assembly*

Burner Tube

Tube and Reflector Hanger

Tube Clamp

Package

U-Clips

Optional Tube Length

*NOTE: Locate fan away from wet environment

or use the IP54 protected fan.

Internal Swirler

Weld Spot

Outside Wall

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

16

Figure 13: Double Linear Layout Overview

Model AG30DL AG40DL AG50DL AG60DL AG70DL

Reflector
Overlap (approx.)

700 mm 250 mm 250 mm 530 mm 530 mm

Tee Assembly

Burner

Reflector

Tube

Tube/Reflector
Hanger

Coupling
Assembly

Fan
Assembly

LEGEND

AG60DL
AG70DL

c

b

de

b

e e

Repeated

Opposite

Side

AG40DL
AG50DL

c

b

de

b

e

Repeated

Opposite

Side

AG30DL

g

c

b

de

b

f

Repeated

Opposite

Side

a = reflector width (not shown) - 365 mm
b = end cap to burner/fan - 50 mm
c = end cap to hanger - 50 mm
d = distance first hanger - 2290 mm

e = distance typical between hangers - 3050 mm

f = burner height - 241 mm

g = burner length - 445 mm

g

f

g

f

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

17

Step 6.3 Burner Tube Installation

Step 6.4 Coupling and Tube Assembly

Description Part Number

Burner Tube 03051100
Bow Shackle E0007576
Tube/Reflector Hanger 03090101

Tube

Tube

Orient coupling so that

the impact block is in the

2:00 or 10:00 oclock

positions

Closed

Open

Ta b

76 mm to
101 mm

Slide Bar

Coupling

Wide End

Coupling

Tube

Slide Bar

A

Close coupling

with tab

B

Start slide bar/coupling lock

onto coupling

C

Insert tubes into coupling

D

Tighten coupling to join tubes

Description Part Number

Coupling 01329600
Slide Bar/Coupling Lock 01329700
Tube 91409408

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

18

Step 6.4.1 Coupling and Tube Assembly (Continued)

Step 6.4.2 Coupling and Tube Assembly (Continued)

Incorrect Slide Bar

position

Correct Slide Bar

dimensions

± 50 mm

Drive slide bar until tight.
End of slide bar should be
within tolerance listed below.

• Repeat Step 6.4 A - D until all tubes are assembled. See Page 18, Section 6.4.2 shown below.

Tighten slide bar as shown below.

3050 mm Typ

± 250 mm

2290 mm

± 250 mm

Total Overall
Tube Length

Weld spot

at end of

heat exchanger

Model Overall Tube Length (mm)

Number

of Tubes

AG15ST 6000 2
AG20ST 9000 3
AG25ST 9000 3
AG30ST 12,000 4
AG35ST 12,000 4
AG40ST 12,000 4
AG45ST 15,000 5
AG50ST 15,000 5
AG55ST 18,000 6

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

19

Step 6.5 Tube Clamp Package Installation

Description Part Number
Tube Clamp Package01318901

Tube Clamp 01396801

Bolt 97113940
Flat Washer 95211600

Nut 92113900

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

20

Step 6.6 Reflector Installation

WARNING

Fire Hazard

Support reflector with reflector hanger
and support strap.

Reflector must not touch tube.

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

Description Part Number

Tube/Reflector Hanger 03090101
Burner Tube 03051100
Reflector 02750303

SECTION 6: LINEAR & DOUBLE LINEAR HEATER INSTALLATION

21

Step 6.6.1 Reflector, U-clip and Reflector Support Installation

The pictorial drawings of the heater construction in
Section 6 are schematic only and provide a general
guideline of where hangers, reflector supports and
u-clips are to be installed.

To ensure proper expansion and contraction movement of
the reflectors, a combination of u-clips and reflector

supports are used. The positioning of reflector supports
and u-clips depend on the individual installation. Use
either pop rivets or sheet metal screws instead of u-clips
when installing end caps and joint pieces in areas where
impact and high wind may be a factor. The following rules
must be observed:

Description Part Number
Reflector Support Package 03050011

Wire Form 91908004
Reflector Support Strap 03050000
Screw #8 x 3/4 94320812
U-clip Package 91107720
Reflector End Cap 027508XX

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

22

SECTION 7: BURNER & FAN INSTALLATION
Step 7.1 Burner Installation

Description Part Number

Bolt 94273914
Lock Washer 96411600
Gasket 02568200
Burner 035XXXXX

NOTE: Tube Clamp Package not shown for clarity.

For details, see Page 19, Step 6.5.

SECTION 7: BURNER & FAN INSTALLATION

23

Step 7.2 IP55 Fan Assembly

Step 7.3 Linear Fan Installation

Fan Assembly

Vent Adapter

Nut

(Torque:

2 Nm

18 in lb)

Note: Apply Silicone
(Recommended)

Install vent adapter
with clamp in the
up position.

Wire Gland

(tighten securely)

Washer

Description Part Number

Fan Assembly 072600XX
Vent Adapter C1323B
Nut M6 C0061B
Washer M6 C0039B

Fan Tube

Fan Assembly

Tighten securely until tube
cannot be removed.

Weld Spot

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

24

Step 7.4 Double Linear Fan Installation

Step 7.4.1 Double Linear Fan Installation (Continued)

Te e

Fan Assembly

Tighten securely until tube
cannot be removed.

SECTION 8: OPTIONAL HEATER ACCESSORIES

25

SECTION 8: OPTIONAL HEATER ACCESSORIES

WARNING

Cut/Pinch Hazard

Wear protective gear during installation,
operation and service.

Edges are sharp.

Failure to follow these instructions can result
in injury.

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

26

8.1 Reflector Side Extension Installation
Step 8.1.1 Bracket Installation

Step 8.1.2 Side Reflector Installation

Description Part Number
Reflector Side Extension Package S7377K

Reflector Side Extension 01368000
Retainer Clips 02751200
Reflector Side Extension 01329910

SECTION 8: OPTIONAL HEATER ACCESSORIES

27

8.2 Decorative Grille Installation
Step 8.2.1 Grille Installation

Step 8.2.2 Frame Shield Installation

Step 8.2.3 Reflector Side Extension Installation for Decorative Grilles

Description Part Number

Aluminium Grille 91407000

Description Part Number

Deco Grille Shield 01365900

Distance "A" Extension

Minimum Maximum Part No. Width

40 mm 150 mm 01370408 200 mm
150 mm 260 mm 01370412 300 mm
260 mm 370 mm 01370416 400 mm

Description Part Number

Reflector Side Extension 01370412

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

28

8.3 Protective Grille Installation
Step 8.3.1 Silicone Cap Installation

Step 8.3.2 Grille End Cap Installation

Step 8.3.3 Grille Installation

Silicone Cap

Grille
Finger

Description Part Number

Grille Section 08050001
Grille End Cap 08050002
Silicone Cap 91915951-6P

Bend up 90°.

Pull outward.

Grille

Grille End Cap

AB

CD

Grille

Grille
End Cap

Reflector

Final Grille
Section

1010 mm

SECTION 8: OPTIONAL HEATER ACCESSORIES

29

8.4 Sports Hall Guard Installation
Step 8.4.1 Grille Installation

Step 8.4.2 Fastener Installation

Step 8.4.3 Mesh Guard Connection

Description Part Number

Mesh Guard 2438 mm E0009855
Mesh Guard 1524 mm C2329B
Strap Stainless Steel S5218W

Description Part Number

Nut Spire C1088B
Screw #8 x 3/8 C1089B

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

30

8.5 Undershield Installation
Step 8.5.1 Hanger Installation

Step 8.5.2 Undershield Installation

Step 8.5.3 Adjust Undershield Height

Reflector

Tube

Assembly Hanging Bracket

Stud

Hex Nut

Description Part Number
Undershield Reflector Package 1010 mm S7399K

Assembly Hanging Bracket C0318B
Stud M6 x 90 C0693B
Nut M6 C0090B

Undershield Reflector

Hex Nut

Shield Support Bracket

Description Part Number
Undershield Reflector Package 1010 mm S7399K

Undershield Reflector 1010 mm C0521B
Nut M6 C0090B
Shield Support Bracket 02751700

1010 mm

SECTION 8: OPTIONAL HEATER ACCESSORIES

31

8.6 Wall Mounting

Install wall mounting brackets at the height shown in the
layout drawing provided by the estimator. Space wall
mounting brackets and hangers as indicated by
dimensions d, e and f in the relevant Layout Overview
drawing for your heater. For Linear heaters see Page 13,

Figure 11, for Double Linear heaters see Page 16, Figure

13.

8.6.1 Hardware Installation

The wall mounting brackets must be attached to a
suitable wall through all mounting holes. Screw sizes less
than M8 (5/16") may not be used. In order for the wall

mounting brackets to adequately carry the weight of the
heater, it must be installed with best building practice.

Figure 14: Linear (Horizontal)

Figure 15: Linear (Rear View)

Model Quantity of Wall Mounting Brackets

AG15ST 3
AG20ST 4
AG25ST 4
AG30ST 5
AG35ST 5
AG40ST 5
AG45ST 6
AG50ST 6

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

32

SECTION 9: VENTING AND FRESH AIR SUPPLY

9.1 Type C

12

, C32 & C62 Appliance

Room Sealed

The heaters are designed to be installed as room sealed
appliances. The flue and air intake are run as separate
pipes to the special concentric wall or roof terminal. The
wire mesh inside the fresh air adapter on the heater must
be removed prior to installation. See Page 34, Figure 18.

9.2 Type B22 Appliance

The flue must be fitted with a low resistance terminal. See
Page 34, Figure 18.

9.3 Flue Installation

The fan outlet may discharge vertically or horizontally.
Connection should be made using 100 mm minimum
diameter Aluminium or Stainless Steel flue material to
National Standard and must be adapted to insert into the
100 mm flue adapter. Both fresh air supply and flue duct
shall not exceed 10,000 mm. AG15 and AG20 flue must
be insulated if longer than 5,000 mm. AG25 flue must be
insulated if longer than 8,000 mm. For each 90° bend,
subtract 1,000 mm from the maximum flue length. The

flue must be self supporting. Suitable terminals must be
fitted for horizontal and vertical flue.

In order to locate fans that are not IP54 protected away
from the wet environment, a 100 mm diameter extension
tube between the heat exchanger end and fan must be
installed. This length must be subtracted from the
maximum flue length.

Fans

Horizontal Vert ical

83 BWLG 190 x 75 (hole) 150 mm dia.
90 BWTL 190 x 75 (hole) 150 mm dia.

9.4 Ventilation Requirements

Detailed recommendations for air supply are given in the
relevant National Standards. There must be an adequate
supply of air for both combustion and general ventilation.
Air vents should have negligible resistance. Do not locate
air vents where they can be easily blocked or flooded, or
adjacent to any flues or extraction systems carrying
flammable vapour.

9.5 Fresh Air Supply

The burner is equipped with a fresh air adapter which has
a silicone gasket incorporated. This adapter accepts
tubes with 100 mm outside diameter.

WARNING

Carbon Monoxide Hazard

Multiburner systems are not approved for
unvented use and must be vented outdoors.

Unitary heaters installed unvented must be
interlocked with sufficient building exhaust.

Heaters must be installed according to the
installation manual.

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

WARNING

Cut/Pinch Hazard

Wear protective gear during installation,
operation and service.

Edges are sharp.

Failure to follow these instructions can result
in injury.

Fresh Air Adapter

Fresh Air

Supply Duct

100 mm OD

SECTION 9: VENTING AND FRESH AIR SUPPLY

33

Figure 16: Individual Flue Connection Detail

Figure 17: Flue Connection Dimensions

9.6 Outside Combustion Air Supply

Clean air must be ducted into the burner box through the
100 mm diameter spigot on the back of the burner box.

See Page 32, Section 9.3 for recommendations on duct
length. Air duct should be as straight as possible. Consult
the manufacturer if more than 1 x 90° bend is necessary.
The fresh air duct must be self supporting.

9.6.1 Air Supply Requirements

When fresh air duct is used, follow one of these rules:

• The flue must penetrate the roof while fresh air can
penetrate any wall. (See Figure 18, A)

• The flue and fresh air supply must penetrate the roof
at a minimum of 1,000 mm apart. (See Figure 18, B)

• The flue must penetrate 1,000 mm higher than the
fresh air inlet on the same wall. (See Figure 18, C)

Fan Tube

Flue Pipe

Flue Adapter

Fan Assembly

Screw

(Torque:2 Nm

18 in lb)

Lockwasher

Nut

90710051
90710052
90710053

ABC

76 mm 95 mm 31 mm

82 mm 101 mm 38 mm
82 mm 101 mm 38 mm

Fan Part Number

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

34

Figure 18: Air Supply with Flue Configurations

9.7 Common Duct

When using a common air inlet duct, always ensure that
the area of the common air inlet duct represents the area
of all air ducts.

C

52

C

32

C12 C32 C

62

B

22

C

12

SECTION 10: GAS PIPING

35

SECTION 10: GAS PIPING

It is important that the gas supply pipe and electrical
connections do not support any of the heater’s weight.

Installation pipes should be fitted in accordance with
National Standards. Pipe work from the meter to the
heater(s) must be of adequate size. Pipes of smaller size
than the heater inlet gas connection should not be used.

Install the gas hose as shown on Page 36, Figure 19. The
gas hose accommodates expansion of the heating
system and allows for easy installation and service of the
burner. Before connecting the burners to the supply
system, verify that all high pressure testing of the gas
piping has been completed.

There is an expansion of the tube with each firing cycle.
This will cause the burner to move with respect to the gas
hose. This can cause a gas leak resulting in an unsafe
condition if the gas connection is not made in strict
accordance with Figure 19.

Meter and service must be large enough to handle all the
burners being installed plus any other connected load.
The gas hose which feeds the system must be large
enough to supply the required gas with a maximum
pressure drop of 13 mm wc. When gas piping is not
included in the layout drawing, the local gas supplier will
usually help in planning the gas piping.

IMPORTANT - the complete installation must be tested
for gas soundness and be purged in accordance with
local and national codes.

• Check the pipe and tubing ends for leaks before
placing heating equipment into service. When
checking for gas leaks, use a soap and water
solution; never use an open flame.

WARNING

Fire Hazard

Tighten gas line fittings to connect gas supply
according to Figure 19.

Flex gas line can crack when twisted.

Gas line moves during normal operation.

Use only 1000 mm long connector of 1/2" or
3/4" nominal ID.

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

WARNING

Explosion Hazard

Leak test all components of gas piping
before operation.

Gas can leak if piping is not installed
properly.

Do not high pressure test gas piping with
heater connected.

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

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

36

Figure 19: Gas Connection with Stainless Steel Flex Connector

Shut-Off Valve (included with gas hose) must
be parallel to burner gas inlet. The 80 mm

displacement shown is for the cold condition.
This displacement may reduce when the
system is fired.

CORRECT POSITIONS

Horizontal

45°

End View

Vertical

(as shown left)

Alternate
positions
okay

Flexible Gas Hose

910 mm length

80 mm)
max. displacement

Side View

Heater Movement

30 mm

CAUTION

Product Damage Hazard

Hold gas nipple securely with pipe wrench
when attaching gas hose.

Failure to follow these instructions can result
in product damage.

INCORRECT POSITIONS (WRONG INSTALLATION)

Heater Movement

Heater Movement

Heater Movement Heater Movement

SECTION 11: WIRING

37

SECTION 11: WIRING

Connect to the electrical supply using the power wire
coming out of the wire gland via a locally mounted IP55
protected double pole fused switch having a minimum
disconnection of 3 mm on each pole. This switch should
be fused to 3 amps. There are no control connections in
the standard burner. Control is affected by interruption of
the main power inlet. See Page 37, Section 11.1 through
Page 38, Section 11.3 for the external wiring details for
the single-burner and double linear heaters.

If the IP55 protected fan MB 56 2BM is used with a single
burner (linear), it must be wired as shown on Page 38,
Section 11.2.

The fan must be protected with a 3 A fuse.

If the heater lockout indication is required, a
BLACKHEAT

®

AG volt free package (P/N 03360008)
must be installed in every burner. Drill a 20.5 mm hole to
fit the wire gland. See Page 39, Section 11.4 for wire
connections. Remove the taps from the power wire.

All wiring must comply with current wiring regulations and
any local regulations which may apply. Always switch off
the supply to the burner before removing the burner side
panel.

11.1 Typical External Wiring Diagram (Linear)

DANGER

Electrical Shock Hazard

Disconnect electric before service.

Heater must be properly grounded.

Failure to follow these instructions can result
in death or electrical shock.

Description Part Number

BLACKHEAT

®

AG Lockout Indicator Package

03360008

Cable Gland U169
Power Wire 91300010
Blue Wire 91300011
Brown Wire 91300012

Burner 1

Fan 1

Earth

Burner 2

Fan 2

Burner 3

Fan 3

Controller or

Thermostat

230 V

1 Ø

50 Hz

L

N

Earth

N

L

Blue

Green

Black

Blue

Brown

Green/Yellow

4 Wire Cable

{

Blue

Green

Black

Blue

Brown

Green/Yellow

4 Wire Cable

{

Blue

Green

Black

Blue

Brown

Green/Yellow

4 Wire Cable

{

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

38

11.2 Typical External Wiring Diagram (Double Linear Option 1)

11.3 Typical External Wiring Diagram (Double Linear Option 2)

230 V

1 Ø

50 Hz

Burner 1

Burner 2

L

N

Earth

Earth

N

L

Fan

3 A

Fuse

Controller or

Thermostat

Controller or

Thermostat

Burner 1 Burner 2

L

N

Earth

Fan

Earth

N

L

230 V

1 Ø

50 Hz

SECTION 11: WIRING

39

11.4 Internal Wiring Diagram

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

40

SECTION 12: OPERATION

Figure 20: Sequence of Operation Chart

NOTE: If the heater operates for more than 24 hours continuously, the ignition module will automatically recycle the
burner to ensure that all safety functions are still in working condition.

12.1 Heater Lockout Indication (Optional)

In case of flame loss during operation of the heater, the
burner control unit goes to lockout mode after three
ignition trials. At this stage a signal or closed relay will
enable the ROBERTS GORDON

®

controller, BMS
system, etc. to indicate precisely which heater has failed.
This can be done by two options.

12.1.1 Heater Lockout Indicator by Connector

A 230 V signal is provided which enables the ROBERTS
GORDON

®

controller, BMS system, etc. to indicate the

heater that has failed. An additional wire has to be
installed from the heater lockout indicator connector to
the monitoring computer. See Page 39, Section 11.4.

Cut/Pinch Hazard

Wear protective gear
during installation,
operation and service.

Edges are sharp.

WARNING

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

Burn Hazard

Allow heater to cool
before service.

Tubing may still be hot
after operation.

Explosion Hazard

Turn off gas supply to
heater before service.

DANGER

Electrical Shock Hazard

Disconnect electric
before service.

Heater must be
connected to a properly
grounded electrical
source.

P

P

Fan Neon

Burner Neon

Neon

Ignition

Gas
Valve

Flame
Sensing

Pressure
Switch

Fan

Thermostat

KEY TO

SYMBOLS

T0 T1 T2 T3 T4 T5 T6 T7

10 sec

Tp

40 sec max.

Interruption of main

Tp

10 sec

Ts

10 sec

flame sensing

11 sec typical

T8

Lockout Alarm
Signal (optional)

Burner Lockout

signal received after

3 ignition trial

failures

Description Part Number

Connector male - Lockout Indicator 91324000
Connector female - Lockout Indicator 91324001
Wire Blue 12" 91300011
Wire Brown 12" 91300012

SECTION 12: OPERATION

41

12.1.2 Heater Lockout Indicator by Volt Free
Connector

A volt free contact relay is closed which enables the
ROBERTS GORDON

®

controller, BMS system, etc. to
indicate the heater that has failed. An additional wire has
to be installed from the heater volt free connector to the
monitoring computer. See Page 39, Section 11.4.

12.2 Testing

Establish that a satisfactory purged gas supply and an
electrical supply is available to the heater. Ensure that all
time clocks and thermostats are set to call for heat.

With the gas supply cut off and the electrical supply
isolated by switching off at the local switch, open the
control chamber secured by the screws. Loosen the
sealing screw from the pressure test point and remove
the cover cap from the governor.

Turn on the gas supply and connect appliance electrical
plug. Ensure that the timer or thermostat, if fitted, are set
to call for full gas rate. Switch on at the local switch. The
sequence as described should take place. If not, refer to
detailed fault finding sequence. When flame is
established, check the gas pressure reading and adjust if
necessary. Refer to burner data label.

Check the gas pressure at the outlet of the gas valve. See
Page 54, Section 16.8.1 for pressure settings or refer to
the data plate.

Switch off the electrical supply (shutting down the heater),
remove pressure gauge, tighten pressure test point
screw, ensuring a tight gas seal. Replace governor cover
cap. Replace control chamber door.

12.3 Commissioning (Multiburner)

1. Establish that a satisfactory purged gas supply and
an electrical supply is available to the heater.

2. ENSURE that all the dampers are in the fully open
position.

3. With the gas supply off at each of the burners and
the electrical supply isolated, open the control
chamber secured by six screws.

4. Ensure that all time clocks and thermostats are set
to call for heat.

5. Switch on the electrical supply at the main isolator.
This will start the exhaust fan.

6. Balancing Cold Suction
Check each burner vacuum by connecting an

inclined pressure gauge to the tee on the pressure
switch inlet side in the burner. Adjust the damper so
that the suction is 1.9 mbar. Repeat for each burner.

7. Start at the end burner (furthest from the exhaust
fan) with the inclined pressure gauge connected as
described above. Turn on the gas and electrical sup­ply, reset the pressure switch by removing suction
from the inlet side of the pressure switch waiting
several seconds and reconnecting. The start up
sequence described on Page 40, Section 12 should
take place. If not, refer to detailed fault finding
sequence. When flame is established, check the
gas pressure reading and adjust if necessary. See
data label.
Check the gas pressure at the outlet of the gas
valve. See Page 54, Section 16.8.1 for pressure set-
tings or refer to the data plate.
Switch off the electrical supply (shutting down the
heater), remove pressure gauge, refit pressure test­point screw, ensuring a tight gas seal. Replace gov-
ernor cover cap.
Repeat this procedure for each burner in the sys­tem.
Close the control chamber and secure with six
screws.

8. Balancing Hot Suction
Reconnect all the burners on the system and allow
them to reach full operating temperature (approxi­mately 20 minutes). Return to each burner and
recheck the hot suctions at the tee on the inlet to the
pressure switch. Re-adjust the damper so that the
hot suction of 1.7 mbar is achieved and lock the
damper in position.

12.4 System Checks

Switch on again at the local switch to help ensure smooth
ignition. Carry out the following system checks:

When running, turn off the gas supply at the appliance.
The heater will immediately shut down followed by one
attempt at restoration followed by lockout.

Linear and Double Linear only:

When running, disconnect the fan plug from the burner.
The unit should shut down within three seconds, proving
operation of the pressure switch.

12.5 User Instructions

After satisfactory testing, ensure that the client is fully
aware of the operation of the system. Bring this manual to
the attention of the user or purchaser; instruct them in the
safe operation of the heater(s).

Description Part Number

Connector male - Volt Free 91324000
Connector female - Volt Free 91324001
Wire Blue 7" 91300004
Wire Brown 7" 91300005
Wire Yellow 12" 91300003
Screw #8 x 3/8 Hex Wshr PHH Type 23 94961406
Base relay P2RF05E C1050B
Relay G2R1-SN IMO 220 V 10 A C1049B

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

42

SECTION 13: SERVICING INSTRUCTIONS

IMPORTANT: Never use the heater as a support for
ladders or other access equipment. Always test for gas
soundness with a suitable detection fluid after completing
any servicing or exchange of gas carrying component.
On completion of any service/fault finding tasks which
require the breaking and remaking of electrical
connections, the checks:- A: Earth Continuity, B: Polarity
and C: Resistance to Earth must then be repeated.

13.1 Annual Procedure

Carry out the following procedure annually. The preferred
time would be immediately before the winter heating
period. If very dirty conditions arise, it may be necessary
to carry out this procedure more often. If the unit takes in
air through an air duct or filter assembly, more frequent
service may be necessary.

13.1.1 Burner and Fan Removal

Isolate the heater from the gas and electrical supplies.
Remove the fan plug from the burner. Unscrew the
securing screws on the burner flange. The burner can
now be removed. Take care not to disturb the gasket on
the flanged burner tube. Unscrew the securing screw on
the fan flange spigot. The fan can now be removed.

13.1.2 Burner and Fan Removal Maintenance

Remove the fan and burner independently to floor level
and clean both items internally using a soft brush and
compressed air, if available. Take care not to damage the
internal parts of the burner. Check fan impeller for
cleanliness and free rotation.

The electrodes are an integral part of the burner. To
check spark gap, remove the securing screws on the
electrode and withdraw it ensuring the gasket is not
damaged. Spark gap on electrode should be
approximately 3 mm.

13.1.3 Tube and Reflector Maintenance

With burner and fan removed, clean the outer surfaces of
the tubes using a brush and wipe the inner surface of the
reflector with a soft damp cloth - use a household

detergent if necessary. Never use abrasive cleaners on
the reflectors. Reassemble the burner and fan in reverse
order. Carry out the Testing Procedure. See Page 41,
Section 12.2.

13.2 Sealing Gaskets

During annual service, all gaskets, as indicated on Page
49, Section 15, must be inspected for cuts, misalignment

or dryness. All round rubber gaskets, sealing the screw
holes, must be replaced in three year intervals or earlier
as needed. All other gaskets must be replaced every five
years or earlier as needed.

Old gaskets must be removed completely before installing
the new gasket. When replacing gaskets on screws,
ensure that the screws are not over tightened.
Deformation of the gasket is an indication of suffcient
torque. The control and combustion chamber doors have
internal seals, replacements must be attached to the
same location.

13.3 Component Removal

First, isolate the heater from the gas and electricity
supply.

Entry to the burner assembly is gained by removing the
six door screws and removing the control chamber door.
Entry to the combustion chamber is gained by removing
the combustion chamber door.

Cut/Pinch Hazard

Wear protective gear
during installation,
operation and service.

Edges are sharp.

WARNING

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

Burn Hazard

Allow heater to cool
before service.

Tubing may still be hot
after operation.

Explosion Hazard

Turn off gas supply to
heater before service.

DANGER

Electrical Shock Hazard

Disconnect electric
before service.

Heater must be
connected to a properly
grounded electrical
source.

SECTION 13: SERVICING INSTRUCTIONS

43

13.3.1 Electrode
Figure 21: Burner Cup Position

13.3.2 Burner Head/Injector Jet

When the cover is removed completely, the burner
assembly is exposed. Unscrew the burner cup. Remove
brass injector jet (orifice). Replace in reverse sequence.

13.3.3 Solenoid Valve/Governor

Remove burner head. Unscrew two screws securing the
solenoid/governor body. Withdraw the electrical
connector and remove the flexible gas line connector. The
solenoid/governor and fittings can now be withdrawn from
the compartment. To ensure IP55 protection, replace the
gasket on the gas valve inlet flange (P/N 03200100).

The solenoid(s) can be removed from the body by
unscrewing central screw. Replace in reverse sequence.

13.3.4 Automatic Flame Control Unit

Remove black ignition lead. Withdraw the 10 point edge
connector. Unscrew two screws from the cover. Replace if
faulty. Refit in reverse sequence.

13.3.5 Pressure Switch

Disconnect the two silicone tubes. Remove electrical
plug. Remove one screw which secures the pressure
switch to the burner. Remove pressure switch.

Replace pressure switch, if faulty, and refit in reverse
sequence ensuring that the rubber tubes are reconnected
to the switch correctly.

13.3.6 Neons

Remove the two push on connectors and unscrew the
nut. Replace in reverse sequence.

13.4 Maintenance Checklist
Installation Code and Annual Inspections:

All installation and service of ROBERTS GORDON

®

equipment must be performed by a contractor
qualified in the installation and service of equipment
sold and supplied by Roberts-Gordon and conform
to all requirements set forth in the ROBERTS
GORDON

®

manuals and all applicable
governmental authorities pertaining to the
installation, service and operation of the equipment.

To help facilitate optimum performance and safety,
Roberts-Gordon recommends that a qualified
contractor conduct, at a minimum, annual
inspections of your ROBERTS GORDON

®

equipment and perform service where necessary,
using only replacement parts sold and supplied by
Roberts-Gordon LLC.

Burner Cup
(center horizontally)

Electrode
Assembly

16 mm

Air Plate

Jet

The Vicinity of the Heater

Do not store or use flammable objects, liquids or vapours near the heater.
Immediately remove these items if they are present.

See Page 5, Section 3.

Vehicles and Other
Objects

Maintain the clearances to combustibles.

Do not hang anything from, or place anything on, the heater.

Make sure nothing is lodged underneath the reflector, in between the tubes or in the
decorative or protective grilles (included with select models).

Immediately remove objects in violation of the clearances to combustibles.

See Page 5, Section 3.

Reflector

Support reflector with reflector hanger and support strap.

Reflector must not touch tube.

Make sure there is no dirt, sagging, cracking or distortion.

Do not operate if there is sagging, cracking or distortion.

Make sure reflectors are correctly overlapped.

Clean outside surface with a damp cloth.

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

44

Vent Pipe

Venting must be intact. Using a flashlight, look for obstructions, cracks on the pipe,
gaps in the sealed areas or corrosion.

The area must be free of dirt and dust.

Remove any carbon deposits or scale using a wire brush.

See Page 32, Section 9.

Outside Air Inlet

Inlet must be intact. Look for obstructions, cracks on the pipe, gaps in the sealed
areas or corrosion.

The area must be free of dirt and dust. Clean and reinstall as required.

Tube s

Make sure there are no cracks.

Make sure tubes are connected and suspended securely.

See Page 9, Section 5

Make sure there is no sagging, bending or distortion.

Gas Line

Check for gas leaks. See Page 35, Section 10.

Burner Observation
Window

Make sure it is clean and free of cracks or holes.

Clean and replace as required.

Blower Scroll, Wheel and
Motor

Compressed air or a vacuum cleaner may be used to clean dust and dirt.

Burner Cup and Orifice

Clear of obstructions (even spider webs will cause problems).
Carefully remove any dust and debris from the burner.

Electrode

Replace if there are cracked ceramics, excessive carbon residue, or erosion of the
electrode.

The electrode gap should be 3 mm.

Thermostat

There should be no exposed wire or damage to the thermostat.

See Page 37, Section 11.

Suspension Points

Make sure the heater is hanging securely.

Look for signs of wear on the chain or ceiling.

See Page 9, Section 5.

Sports Hall Guard,
Decorative and Protective
Grilles (optional)

The grille must be securely attached. If the grille is loose or off, contact a contractor
qualified in the installation and service of gas-fired heating equipment for repair.

Check that side reflector extensions are installed correctly and secured in place if
necessary. (Decorative grille only.)

See Page 27, Section 8.2.3 and Page 28, Section 8.3

Make sure shield is installed correctly and secured in place if necessary.
(Decorative grille only.) See Page 27, Section 8.2.2.

Wall Tag

If a wall tag is present, make sure it is legible and accurate. Please contact
Roberts-Gordon LLC or your ROBERTS GORDON® independent distributor if you
need a wall tag. See Page 4, Section 2.1.

SECTION 14: TROUBLESHOOTING

45

SECTION 14: TROUBLESHOOTING

DANGER

Electrical Shock Hazard

Disconnect electric before service.

Heater must be properly grounded.

Failure to follow these instructions can result
in death or electrical shock.

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.

Cut/Pinch Hazard

Wear protective gear
during installation,
operation and service.

Edges are sharp.

WARNING

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

Burn Hazard

Allow heater to cool
before service.

Tubing may still be hot
after operation.

Explosion Hazard

Turn off gas supply to
heater before service.

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

46

14.1 Troubleshooting Flow Chart (Linear and Double Linear)

No

No

No

Ye s

No Ye sYe sNo

No

No

No

No

Ye s

NoNoYe s

Ye s

Ye s

Ye s

NoYe s

Ye s

Ye s

Ye s

No

Replace ignition

module.

Is there power out

from pin 10 on

ignition module?

Replace Fan.

Turn up thermostat.

Does the fan turn on?

Place a jumper across

the thermostat terminals.

Does the fan turn on?

Check thermostat wiring

and replace thermostat if

necessary.

Is there power (230V)

at the burner?

Check relay wiring

(if applicable) and wiring

to the burner.

Remove electrical plug

from the pressure switch; place

jumper between black & white

leads. Does the fan turn on?

Replace pressure switch.

Remove obstruction.

Unplug burner.

Does the fan

turn freely?

Is the fan obstructed?

Fan bearings may have

failed. Replace fan.

Remove obstruction.

Repair, replace or

tighten hoses

as necessary.

Is the flue pipe or

the inlet of the

burner obstructed?

Are the hoses to the pressure

switch secure and leak free?

Replace pressure switch.

Is the igniter gap

set at 3 mm?

Carefully reset gap

to 3 mm.

Replace automatic

control unit.

Unplug burner and check

electrode and ignition wire.

Are they damaged?

Replace electrode and

ignition wire as needed.

Is there spark at the

igniter?

Remove electrical plug

from the pressure switch;

place jumper between

black & white leads.

Does the fan turn on?

SECTION 14: TROUBLESHOOTING

47

Troubleshooting Flow Chart (Linear and Double Linear)

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

48

14.2 Manifold Gas Pressure Setting

0

1

2

3

4

5

6

1

2

3

4

5

6

0

1

2

3

4

5

6

1

2

3

4

5

6

Manometer

4

RELAY

3

(14)

(12)

2

(A1)

1(-)

(A2)

5(+)

Combustion Chamber

Control Chamber

Governor (orifice) pressure
while burner is running. See

Page 54, Section 16.8.1.

Gas supply pressure

while burner is running. See
Page 52, Section 16.2.3.

SECTION 15: REPLACEMENT PARTS

49

SECTION 15: REPLACEMENT PARTS

Carbon Monoxide Hazard

WARNING

Use only genuine ROBERTS GORDON

®

replacement parts per this installation, operation and

service manual.

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

Explosion Hazard

DANGER

Electrical Shock Hazard

Fire Hazard

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

50

.

*See Page 51, Section 15.1.

A

B

C

D

E

F

G

H

J

I

K

L, T

(2)

M

N

P

R

SV

V

(2)

W

(2)

Q

(6)

V

(2)

W

(3)

Q

(7)

R

(4)

R

(2)

R

(3)

Item Description Part Number Item Description Part Number

A Automatic Control Unit 90438702 P Gasket 1/2" OD x 1/4" ID 92700008
B Flex Line Adapter 91220700 Q Gasket 1/2" OD x 3/16" ID 92700001

C

Pressure Switch for
HE50

HE35

HE15, 20, 30, 45

HE25

HE40

90439801
90439802
90439803
90439804
90439805

R Gasket 3/8" OD x 3/16" ID 92700002

D Amber Neon Lamp 91320604 S Valve Gasket 03200100

E* Gas Valve 90033101 T Window Gasket 92700003

FGovernor Screw N/A U Fresh Air Adaptor Gasket 92700005
G Outlet Pressure Tap N/A V Gasket 1/2" x 17 3/8" 92700006
H Cable Gland U169 W Gasket 1/2" x 8.5" 92700007

I Star Washer 96212100 N/S Ignition Wire 90427704

J

Jet Orifice
(See Page 54, Section 16.8)

N/A N/S Burner Tube Gasket 92700004

K Burner Cup Assembly 03020100 N/S Wire Harness- Main Power 03320404

L Mica Window Assembly 03360004 N/S Wire Harness- Pressure Switch 03320405

M Electrode Assembly 90427403 N/S Purple Wire 07250007

N Fresh Air Adapter 90501002 N/S Electrode Gasket 02558501

SECTION 15: REPLACEMENT PARTS

51

15.1 Replacement Packages

15.1.1 Screw and Gasket Replacement Package
(P/N 03360005)

15.1.2 Viewer Window Replacement Package
(P/N 03360004)

15.1.3 Door Gasket
Replacement Package (P/N 03360002)

15.1.4 Gas Valve
Replacement Package (P/N 03360003)

Description Quantity Part Number

Screw M4 x 8mm 2 93304506
Screw 10-24 x 5/8 4 94118110
Screw #8 x 3/8 4 94118107
Screw M8 x 20 mm 2 93304507
Burner Tube Gasket 1 92700004
Fresh Air Intake Gasket 1 92700005
Rubber Gasket 10 92700002
Gas Valve Gasket 1 03200100

Description Quantity Part Number

Viewer Ring 1 01390203
Mica Window Square 1 02553200
Window Gasket 2 92700003
Screw M6 x 16 mm 2 93304505
Rubber Gasket 2 92700008

Description Quantity Part Number

Screw 10-24 x 5/8 2 94118110
Silicone Gasket 4 92700006
Silicone Gasket 6 92700007
Rubber Gasket 13 92700001

Description Quantity Part Number

Gas Valve SIT 840 1 90033101
Screw M4 x 8 mm 2 93304506
Gas Valve Gasket 1 03200100

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

52

SECTION 16: SPECIFICATIONS

16.1 Material Specifications

16.1.1 Combustion and Tubes

100 mm dia. 16 gauge heat treated aluminised
mild steel.

16.1.2 Reflectors

NS3 H14 aluminium or 1.4016 2R stainless
steel (option).

16.2 Heater Specifications

16.2.1 Sequence Controller

Fully automatic, single try, direct spark,
100% shut off ignition flame rectification module.

16.2.2 Electrical

Rating: 230V, 50 Hz, single phase, 1 amp

Connection: minimum IP55 junction box

16.2.3 Gas Supply

Connection: Rc1/2 (1/2" BSP int)

Natural G20: Minimum - Inlet 15 mbar (6 in wg)

Maximum - Inlet 50 mbar (20 in wg)

Natural G25: Minimum - Inlet 17.5 mbar (7 in wg)

Maximum - Inlet 50 mbar (20 in wg)

LP Gas (Propane or Butane):

Minimum - Inlet 32.5 mbar (13 in wg)

Maximum - Inlet 50 mbar (20 in wg)

16.3 Venting Specifications

16.3.1 IP54 Protected Fans

AG15, 20, 25, 30, 35........ Model: Torin DSA 508-128

(P/N 90710051)

AG40, 45, 50 .................. Model: Torin DSF 146-052

(P/N 90710053)

AG30DL - 70DL .............. Model: Torin DSF 146-052

(P/N 90710053)

Consult the manufacturer for availability of alternate fans.

16.3.2 Flue

The flue must be 100 mm, or greater in diameter, and
must conform to National Codes. The flue must be self
supporting. Inlet must be 100 mm diameter.

Multiburner - Flue will be 150 mm diameter. Flue material
must conform to National Codes. The flue must be self
supporting.

16.4 Suspension Specifications

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

16.5 Controls Specifications

Time switches, thermostats, etc. can be wired into the
electrical supply. External controls supplied as an
optional extra.

SECTION 16: SPECIFICATIONS

53

*Please contact Roberts-Gordon or your ROBERTS GORDON

®

independent distributor to obtain minimum and
recommended installation heights. For poultry and other agricultural applications, it is important to install your heater
in accordance with the appropriate clearances to combustibles. Also, it is recommended that the design and layout of
all your agricultural buildings and barns are performed by a qualified professional in the design, installation and
service of equipment sold and supplied by Roberts-Gordon.

16.6 Linear Heater*

AG15ST

AG20ST

AG25ST

AG30ST

AG35ST

AG40ST

AG45ST

AG50ST

Input - Gross (kW) 15 20 25 30 35 40 45 50/51

Input - Net (kW) 13.5 18 22.5 27 31.5 36 40.5 45/46

Tube Length (mm) 6096 9144 9144 12192 12192 12192 15240 15240

Overall Heater Length (mm) 6887 9935 9935 12983 12983 13028 16076 16076

Weight (kg) 41 55 55 68 68 68 81 81

16.7 Double Linear Heater*

AG30DL

AG40DL

AG50DL

AG60DL

AG70DL

Input - Gross (kW) 30 40 50 60 70

Input - Net (kW) 27.536455463

Tube Length (mm) 12802 18898 18898 24994 24994

Overall Heater Length (mm) 13914 20010 20010 26106 26106

Weight (kg) 82 110 110 136 136

BLACKHEAT® AG INSTALLATION OPERATION AND SERVICE MANUAL

54

16.8 Burner Specifications
Figure 22: Linear Specifications

**Based on Gross Caloric Value.

16.8 .1 Burner
Specifications

AG15 AG20 AG25 AG30 AG35 AG40 AG45 AG50

Burner Airplate ID Number 515 505 513 502 500 501 500 506

Jet Numbers - Natural G20 & 25 #31 #28 5/32 #17 #12 #8 #3 #1

Jet Numbers - Propane/Butane #47 #43 #39 #33 #31 3.2 mm #29 #28

Gas Consumption**Natural G20 (m

3

/h) 1.43 1.91 2.38 2.86 3.34 3.81 4.29 4.76

Natural G25 (m

3

/h) 1.66 2.22 2.77 3.32 3.88 4.43 4.99 5.54

Propane (m

3

/h)

[kgh]

0.56
[1.08]

0.75
[1.44]

0.94
[1.80]

1.13
[2.16]

1.32
[2.52]

1.51
[2.88]

1.69
[3.25]

1.88
[3.61]

Butane (m

3

/h) 0.43 0.57 0.72 0.86 1.00 1.14 1.29 1.43

Governor Pressure Butane (mbar) 20.4 20.4 19.7 19.7 19.7 19.7 20 20.9

Butane (in wg) 8.1 8.2 7.9 7.9 7.9 7.9 8.0 8.4

Propane (mbar) 28.4 27.1 26.9 26.6 26.9 26.9 27.4 26.9

Propane (in wg) 11.4 10.9 10.8 10.7 10.8 10.8 11.0 10.8

Governor Pressure Natural G20 (mbar) 10.0 9.5 9.5 9.5 9.2 9.5 8.7 8.7

Natural G20 (in wg) 4.0 3.8 3.8 3.8 3.7 3.8 3.5 3.5

Natural G25 (mbar) 15.4 14.9 15.2 14.9 14.2 14.9 13.7 13.2

Natural G25 (in wg) 6.2 6.0 6.1 6.0 5.7 6.0 5.5 5.3

Swirler*

Side View

Reflector

End View

Tube Length

Fan

Burner Tube

100 mm

Damper

348 mm

499 mm

241 mm

Infrared Heating

Maintain clearance

to the side and

clearance below

the heater from vehicles

and combustible materials.

www.rg-inc.com Printed in U.S.A. P/N 91037912 Rev. H

Attach this information to a wall near the ROBERTS GORDON

®

heater.

Read the Installation, Operation, and Service Manual thoroughly before installation, operation, or service.

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.
Write the largest clearance dimensions with permanent ink according to your model number and configuration in the open spaces below.

OPERATING INSTRUCTIONS

1. STOP! Read all safety instructions on this information sheet.

2. Open the manual gas valve in the heater supply line.

3. Turn on electric power to the heater.

4. Set the thermostat to desired setting.

1. Set the thermostat to off or the lowest setting.

1. Set the thermostat to off or the lowest setting.

2. Turn off electric power to the heater.

3. Turn off the manual gas valve in the heater supply line.

4. Call your registered installer/contractor qualified in the
installation and service of gas-fired heating equipment.

IF THE HEATER WILL NOT OPERATE, TO ENSURE YOUR SAFETY,

FOLLOW THESE INSTRUCTIONS TO SHUT DOWN YOUR HEATER

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.

TO TURN OFF THE HEATER

Service Telephone: [phone]
Service Fax: [phone]
E-mail: [e-mail]
E-mail: [e-mail]

Roberts-Gordon LLC

1250 William Street
P.O. Box 44
Buffalo, NY 14240-0044 USA
Telephone: [phone]
Fax: [phone]
Toll Free: 800.828.7450

WARNING

Roberts-Gordon Europe Limited

Unit A, Kings Hill Business Park
Darlaston Road, Wednesbury
West Midlands WS10 7SH UK
Telephone: [phone]
Fax: [phone]

®

Installation Code and Annual Inspections:

All installation and service of ROBERTS GORDON® equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Roberts-Gordon and
conform to all requirements set forth in the ROBERTS GORDON

®

manuals and all applicable governmental authorities pertaining to the installation, service and operation of the equipment. To help

facilitate optimum performance and safety, Roberts-Gordon recommends that a qualified contractor conduct, at a minimum, annual inspections of your ROBERTS GORDON

®

equipment and

perform service where necessary, using only replacement parts sold and supplied by Roberts-Gordon.

Further Information: Applications, engineering and detailed guidance on systems design, installation and equipment performance is available through ROBERTS GORDON® representatives.

Please contact us for any further information you may require, including the Installation, Operation and Service Manual.

This product is not for residential use.

© 2009 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 s

ystems – without written permission of Roberts-Gordon LLC.