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
vapours 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: +44 (0)121 506 7700
Fax: +44 (0)121 506 7701
Service Telephone: +44 (0)121 506 7709
Service Fax: +44 (0)121 506 7702
E-mail: uksales@rg-inc.com
E-mail: export@rg-inc.com
www.robertsgordon.co.uk
www.rg-inc.com
WARNING
Installation must be done by a registered installer/
contractor qualified in the installation and service of
gas/oil-fired heating equipment or your fuel supplier.
Improper installation, adjustment, alteration, service
or maintenance can result in death, injury or property
damage. Read the installation, operation and service
manual thoroughly before installing or servicing
this equipment.
Installer
Please take the time to read and understand
these instructions prior to any installation.
Installer must give a copy of this manual to the owner.
Owner
Keep this manual in a safe place in order to provide
your service technician with necessary information.
© 2013 Roberts-Gordon Europe Limited
Combat
®
Installation,
Commissioning,
OIL-FIRED:
Model MOB
015 to 0100
GAS-FIRED:
Model MGB
015 to 0100
P/N X523 Rev J 08/13
Cabinet Heaters
© 2013
Roberts-Gordon Europe Limited
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 Europe Limited.
Printed in U.K.
TABLE OF CONTENTS
SECTION 1: Heater Safety......................................................2
1.1 Manpower Requirements .............................................2
1.2 Safety Labels and Their Placement ............................. 2
SECTION 2: Installer Responsibility ..................................... 4
2.1 Laminated Wall Plate ...................................................4
2.2 Corrosive Chemicals.................................................... 4
2.3 National Standards and Applicable Codes ..................4
SECTION 3: Critical Considerations .....................................5
3.1 Basic Information.........................................................5
3.2 Location and Suspension ............................................5
3.3 Required Clearances to Combustibles.........................5
3.4 Ventilation .................................................................... 6
3.5 Fuel Supply.................................................................. 6
3.6 Electrical Supply .......................................................... 7
3.7 Flue..............................................................................7
SECTION 4: Specifications ....................................................8
4.1 MGB & MOB Internal Heaters .....................................8
4.2 MGB & MOB External Heaters ....................................9
4.3 Air Outlet and Flue Arrangements ............................. 10
4.4 General Technical Data Table (all models)
Appliance Category II
2H/L 3B/P
..................................... 11
4.5 Technical Data - Ecoflam ON/OFF Burners............... 11
4.6 Technical Data - Ecoflam 2-Stage Burners................ 12
4.7 Technical Data - Ecoflam Oil-Fired Burners ............... 13
4.8 Technical Data - Ecoflam 2-Stage Oil Burners........... 14
SECTION 5: Heater Installation............................................ 15
5.1 General...................................................................... 15
5.2 Handling .................................................................... 15
SECTION 6: Flue Installation ...............................................17
6.1 Flue Installation.......................................................... 17
6.2 Type B
22
Appliance..................................................... 18
6.3 Type C
12
, C32 & C62 Appliance ....................................20
SECTION 7: Air Supply......................................................... 22
7.1 Room Sealed Installation ........................................... 22
7.2 Open Flued Installation ..............................................22
7. 3 B uilding Ventilation .....................................................22
7.4 Isolated Equipment Rooms ........................................22
SECTION 8: Fuel Pipe Work .................................................23
8.1 Connections............................................................... 23
8.2 Fuel Oil Supply ..........................................................24
SECTION 9: Wiring and Electrical Information...................27
9.1 Electrical Supply ........................................................27
9.2 Remote Controls ........................................................27
9.3 Wiring Diagram Gas Models 15-30 (floor standing) ... 28
9.4 Wiring Diagram Oil Models 15-30 (floor standing) ..... 29
9.5 Wiring Diagram Gas Models 15-30
(horizontal mounting)................................................. 30
9.6 Wiring Diagram Oil Models 15-30
(horizontal mounting)................................................. 31
9.7 Wiring Diagram Gas Models 40-50 (floor standing)... 32
9.8 Wiring Diagram Oil Models 40-50 (floor standing).....33
9.9 Wiring Diagram Gas Models 40-50
(horizontal mounting)................................................. 34
9.10 Wiring Diagram Oil Models 40-50
(horizontal mounting)................................................. 35
9.11 Wiring Diagram Gas Models 60-100
(floor standing) ..........................................................36
9.12 Wiring Diagram Oil Models 60-100
(floor standing) ..........................................................37
9.13 Wiring Diagram Gas Models 60-100
(horizontal mounting).................................................38
9.14 Wiring Diagram Oil Models 60-100
(horizontal mounting).................................................39
SECTION 10: Commissioning ..............................................40
10.1 Pre-Commission Checks..........................................40
10.2 Commissioning the Single Stage Burner
(gas heaters)..............................................................41
10.3 Commissioning the Two-Stage (High/Low) Burner
(gas heaters)..............................................................43
10.4 Motor Starter and Thermal Overload .......................44
10.5 Gas Valves ...............................................................44
10.6 Combustion Testing (all models) ..............................45
10.7 Commissioning the Burner (Oil Heaters)..................45
10.8 Control - Oil-Fired Heaters .......................................45
10.9 Turning Off the Heater (all models) ..........................47
10.10 External Controls....................................................47
10.11 In st ruction to the User ............................................47
SECTION 11: User Instructions............................................48
11.1 User Instr
uctions.......................................................48
11.2 Common User Controls (all models).........................49
11.3 Lighting Instructions (all models) ..............................49
11.4 Simple Fault Finding (all models)..............................49
SECTION 12: Servicing.........................................................51
12.1 Servicing Instructions...............................................51
12.2 Burner Maintenance.................................................51
12.3 Fan/Motor Assembly Maintenance (all models) .......52
12.4 Heat Exchanger Maintenance..................................52
12.5 Thermal Insulation ...................................................52
12.6 Maintenance Checklist .............................................53
SECTION 13: Conversion Between Fuels............................55
13.1 General ....................................................................55
13.2 Burner Conversion ...................................................55
SECTION 14: Troubleshooting .............................................56
14.1 General ....................................................................57
14.2 Troubleshooting for Oil Burners (see manufacture’s
instructions) ...............................................................58
14.3 Troubleshooting for Gas Burners (see manufacturer’s
instructions) ...............................................................59
14.4 Troubleshooting for Flame Supervision System .......60
14.5 Troubleshooting for Solenoid Valves Circuit .............61
14.6 Troubleshooting for Main Fan Circuit (1 Ø)...............61
14.7 Troubleshooting for Main Fan (3 Ø)..........................62
SECTION 15: Removal and Replacement Parts..................63
15.1 Burner Components ..............................................63
15.2 Direct On-Line Main Fan Starter and Thermal
Overload Unit (3 Ø)....................................................63
15.3 Control Circuit Protection..........................................64
15.4 Combination Fan/Limit Thermostat ..........................64
15.5 Main Fan Motor (3 Ø Belt Drive)...............................64
15.6 Main Fan Units .........................................................64
SECTION 16: Spare Parts List..............................................66
16.1 Gas On/Off ...............................................................66
16.2 Gas High/Low...........................................................71
16.3 Oil On/Off .................................................................75
16.4 Oil High/Low.............................................................81
TABLE OF FIGURES
Figure 1: Burner and Combustion Panel Label Placement ....... 3
Figure 2: Installation Clearances and Clearances to
Combustibles ...........................................................6
Figure 3: Typical Installation of an Gas-Fired Cabinet Heater. 15
Figure 4: Typical Installation of an Oil-Fired Cabinet Heater... 16
Figure 5: Flue Termination ......................................................18
Figure 6: Offset Flues with 135° Bends...................................18
Figure 7: 90° Horizontal Flue ..................................................19
Figure 8: Guy Wire .................................................................. 19
Figure 9: Socket Direction (Stainless Steel)............................19
Figure 10: Flue and Roof Detail (Stainless Steel) ................... 19
Figure 11: Flue Installation (Models 15 - 100) ........................ 20
Figure 12: Balanced Flue (Vertical).........................................20
Figure 13: Balanced Flue (Horizontal)..................................... 21
Figure 14: Gas Connection .....................................................24
Figure 15: B. M. Oil Lifter ........................................................ 25
Figure 16: Pressurised System Installation - Duplex System ..26
Figure 17: Combination Thermostat (all models) .................... 41
Figure 18: Gas-Fired Heater Control Box Sequence............... 43
Figure 19: Gas Train Circuit for Dungs Gas Valves (all models)..
44
Figure 20: Oil-Fired Heaters Control Box Sequence............... 46
Fig
ure 21: Heater Operating Sequence ..................................48
Figure 22: Fan/Limit Thermostat............................................. 49
Figure 23: Belt Tension ........................................................... 52
Figure 24: Combination Fan/Limit Thermostat Parts List ........ 65
1 of 85
Product Approval
COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
2 of 85
SECTION 1: HEATER SAFETY
Yo ur 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/oilfired heating equipment.
Read this manual carefully before installation,
operation, or service of this equipment.
Burner manufacturers manual is also provided to
give detailed instructions on the operation of the
burner. The settings for use of the burner with the
heater are shown in these instructions.
This heater is designed for heating non-residential
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
thoro
ughly understood before proceeding with the
installation.
Protective gear is to be worn during installation,
operation and service. Thin sheet metal parts, such
as the various venting components, have sharp
edges. To prevent injury, the use of work gloves is
recommended.
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 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 not play with the appliance.
For additional copies of the Installation,
Commissioning, Operation and Service Manual, or
relavant EcoFlame burner and gas train manuals,
please contact Roberts-Gordon Europe Limited.
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.
Contact Roberts-Gordon Europe Limited for
obtaining replacement signs or labels. See Page 3,
Figure 1.
SECTION 1: HEATER SAFETY
3 of 85
Figure 1: Burner and Combustion Panel Label Placement
Description Part Number
Logo Label 91040030
Address Label 91040006
Rating Plate Label 91040001
Electrical Shock Hazard Label 91008001
Severe Injury Hazard Label 91070002
Burn Hazard Label 91070004
Fire Hazard Label 91070006
Lighting Instruction Label 91040129
Wiring Diagram Models 15-30 Gas, Floor 91040140
Wiring Diagram Models 40-50 Gas, Floor 91040141
Wiring Diagram Models 60-100 Gas, Floor 91040142
Wiring Diagram Models 15-30 Gas, Horz. 91040143
Wiring Diagram Models 40-50 Gas, Horz. 91040144
Wiring Diagram Models 60-100 Gas, Horz. 91040145
Wiring Diagram Models 15-30 Oil, Floor 91040146
Wiring Diagram Models 40-50 Oil, Floor 91040147
Wiring Diagram Models 60-100 Oil, Floor 91040148
Wiring Diagram Models 15-30 Oil, Horz. 91040149
Wiring Diagram Models 40-50 Oil, Horz. 91040150
Wiring Diagram Models 60-100 Oil, Horz. 91040151
Wiring Diagram Models 40-50 Gas 1Ø Belt 91040152
Wiring Diagram Models 40-50 Oil 1Ø Belt 91040153
Wiring Diagram Models 60-100 Gas Star 91040154
Wiring Diagram Models 60-100 Oil Star 91040155
Plastic Pouch 90911300
Burner Lockout Label 91040058
COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
4 of 85
SECTION 2: INSTALLER RESPONSIBILITY
• To install the heater, as well as the fuel and
electrical supplies, in accordance with applicable
specifications and codes. Roberts-Gordon
Europe Limited recommends the installer contact a local building inspector, Fire Officer or
insurance company for guidance.
•To use the information given in this manual
together with the local and national codes to
perform the installation.
• To install the heater in accordance with the
clearances to combustibles of this heater.
•To furnish all needed materials not furnished
as standard equipment.
• To plan location of supports, flues and air
intakes.
•To provide access to burners for servicing.
•To provide the owner with a copy of this
installation, commissioning, 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 that there is sufficient ventilation in the
area to comply with the requirements of
all rele
vant local and national codes.
• To ensure the heater is placed in an approved
application.
2.1 Laminated Wall Plate
A laminated wall plate is available for the heater as a
permanent reminder of the safety instructions and
the importance of the required clearances to
combustibles. Affix the plate by peeling off the
backing of the adhesive strips on the rear surface
and position the plate on a wall near the heater (e.g.
thermostat or ROBERTS GORDON
®
Controller).
A copy of the wall plate (P/N 91040095) is illustrated
on the back cover. Know your model number and
installed configuration. Model number and installed
configuration are found on the burner and in the
Installation, Commissioning, 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 plate.
2.2 Corrosive Chemicals
Roberts-Gordon Europe Limited 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 lifespan of the heater components will be greatly reduced. 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 applicable standards and local
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 main relevant regulations for installation within
the UK are:
• Gas safety (installation and use) regulations,
1984 and amendments - 1996.
• BS6230 - Specification for the installation of gas
fired forced convection air heaters for commer-
cial and industrial space heating of rated input
exceeding 60 kW. (This standard also applies to
oil-fired heaters, except for the fuel supply).
• BS6230 - Parts 2 & 3, fire precautions in the
design and construction of buildings.
• BS6891 - Low pressure installation pipes.
• BS5410 - Codes of practice for oil firing. Part 2
installation of 44 kW and above output capacity
for space heaters, hot water and steam supply
purposes.
•Institute of Gas Engineers document IGE/UP/2.
•Building regulations.
•IEE regulations.
• Health and safety at work acts.
•Requirements of local authority, fire officer and
insurance company.
WARNING
Explosion Hazard
Equipment must have access to
uncontaminated air at all times.
Failure to follow these instructions can result
in death, injury or property damage.
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: CRITICAL CONSIDERATIONS
5 of 85
SECTION 3: CRITICAL CONSIDERATIONS
3.1 Basic Information
Cabinet heaters are supplied with burners suitable
for on/off operation as standard. As an option, two-
stage (High/Low) operation is available for gas and
oil-fired burners.
3.2 Location and Suspension
All models:
•Must be installed indoors within the heated
space. Special versions are available for installation outdoors.
•Must be installed for floor standing vertical
installation.
•Must be installed in a manner which allows all
the upper panels and either of the lower side
panels to be removed to provide access to all
serviceable components.
•Must be placed on a firm, level, non-combustible
surface that can support its weight. See Page 8,
Section 4.1 for weight details.
• Special versions supplied with steel channels to
support the heater are available and may be
mounted horizontally. When installed horizontally, the heater will normally lie on its left side
when viewed from the burner. The same clear-
ances and comments on panels must be used,
except for the side the heater lies on.
3.3 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, which may catch on fire
and include common items such as wood, paper,
rubber, fabric, etc. Maintain clearances to
combustibles at all times for safety.
Clearances around the heater and flue must be as
indicated on Page 6, Figure 2 to ensure access for
servicing, and correct operation. If clearances to
combustibles are not indicated, then installation
clearances apply.
Check the clearances on each heater 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
incl
uding flammable objects, liquids, dust or
vapours away from this heater or any other appli-
ance.
• Do not spray aerosols in the vicinity of this appliance.
• The stated clearances to combustibles represents a surface temperature of 50° C (90° F)
above room temperature. Building materials with
a low heat tolerance (such as plastics, vinyl sid-
ing, 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 equip-
ment and workstations.
• Maintain clearances from vehicles parked below
the heater.
• Maintain clearances from swinging and over-
head doors, overhead cranes, vehicle lifts, parti-
tions, 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
combu
stibles. 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 pro-
posed installation when there is a possibility of
exposure to combustible airborne materials or
vapours.
• Hang heater in accordance to minimum suspen-
sion requirements. Consult manufacturer.
• Affix the tag on a wall near the heater.
WARNING
Fire Hazard
Keep all flammable objects, liquids and
vapours 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.
COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
6 of 85
Figure 2: Installation Clearances and Clearances to Combustibles
3.4 Ventilation
It is important to ensure that there is adequate air
circulation around the heater to supply air for
combustion, ventilation and distribution in
accordance with local and national codes.
3.5 Fuel Supply
It is important that the fuel supply pipe is sized
correctly to provide the inlet pressure as stated on
the heater data plate. The gas/oil supply pipe and
electrical connections must not support any of the
heater's weight.
.6 m (2')
.6 m
(2')
*.6 m
(2')
*.6 m
(2')
*.6 m (2')
4 m (13.2')
The flue pipe must have clearance from combustibles by 5 cm.
If installed where individuals can come in contact with the pressure relief door or other hot components,
adequate guarding must be provided.
All distances are minimum clearance requirements for service access, air flow and safety.
*A service clearance of 1 m is required on one side to allow for fan replacement.
WARNING
Carbon Monoxide Hazard
Heaters may be installed vented or unvented.
Vented heaters must be vented outdoors.
Unvented heaters must be installed in buildings
with ventilation rates as per section 7.
Failure to follow these instructions can result in
death or injury.
SECTION 3: CRITICAL CONSIDERATIONS
7 of 85
3.6 Electrical Supply
A permanent 230 V, 50 Hz, 1 Ø is required on
models 15 to 30 and 400 V, 50 Hz, 3 Ø and neutral
required on models 40 to 100 (special version MGB
and MOB 040 and 050 models are available as belt
drive). The heater also requires suitable energy
controls in accordance with Page 27, Section 9.
ON/OFF control, temperature control, time control,
and frost protection are available as a remote
control, which needs to be site wired for proper
operation of the heater. Alternatively, any remote
energy controls may be used which must be wired in
accordance with Page 28, Section 9.3 through Page
39, Section 9.14.
3.7 Flue
Choose heater siting to allow for the proper location
of the flue. Each heater must be fitted with an
individual and correctly sized sealed flue system.
See Page 17, Section 6.
No other appliance may be connected to the flue.
For room sealed installation, the air intake must be
the same size sealed system and the flue/air intake
must terminate at an approved concentric wall or
roof terminal.
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.
COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
8 of 85
SECTION 4: SPECIFICATIONS
4.1 MGB & MOB Internal Heaters
Dimension Data - MGB & MOB Internal Heaters
NOTES: Horizontal cabinet heaters are designed to lie on their left side as standard.
For vertical models, add 54 mm (2 in) to the right side of the cabinet for the fan/limit thermostat.
For horizontal models, add 54 mm (2 in) to the top of the cabinet for the fan/limit thermostat.
*All MOB heaters must be connected to a suitable flue constructed of single wall stainless steel.
*MGB 15-50 heaters must be connected to a suitable flue constructed of single wall aluminium or stainless steel.
** Maximum flue length between heater and flue terminal (horizontal only).
E
C
A
38
70
D
38
G
F
B
38
70
38
D
G
F
B
Front View
(all models)
Side View
(Models 015 - 050)
Rear View
(all models)
Side View
(Models 060 - 0100)
Model 015/020 030 040 050 060/070/080 0100
A
Width
mm
(in)
723
28.5
723
28.5
853
33.6
857
33.7
1016
40
1016
40
B
Depth, Cabinet Only
mm
(in)
860
33.9
860
33.9
860
33.9
1015
40
1676
66
1994
79
C
Height, Cabinet Only
mm
(in)
1778701778701956771956
77
1956
77
1956
77
D
Depth, Overall
mm
(in)
1267501267501337531496
59
2156
85
2496
98
E
Height, Including Heads
mm
(in)
2007792083822261892261
89
2261
89
2261
89
F
Left/Right Air Inlet Spigot - Depth
mm
(in)
781
31
781
31
781
31
940
37
1600
63
1918
76
G
Left/Right Air Inlet Spigot - Height
mm
(in)
457
18
457
18
560
22
560
22
560
22
559
22
H
Rear Air Inlet Spigot - Depth
mm
(in)
648
26
648
26
781
31
781
31
NA NA
J
Rear Air Inlet Spigot - Height
mm
(in)
361
14
361
14
446
18
446
18
NA NA
Flue Diameter*
mm
(in)
100
4
130
5
130
5
130
5
229
9
229
9
Flue Length**
m
(ft)
8
27
8
27
8
27
8
27
NA NA
Weight
kg
(lbs)
200
441
200
441
245
541
270
596
440
970
530
1170
SECTION 4: SPECIFICATIONS
9 of 85
4.2 MGB & MOB External Heaters
Dimension Data - MGB & MOB External Heaters
NOTE: *For Models 060-0100, the circular flue spigot is at the front of the heater, with the rectangular air outlet spigot at the rear.
COMBAT
®
external cabinet heaters are designed to be sited externally, with heat ducted into the building. These models
are fitted with a special metal rain drip cover, and all cabinet joints are silicone sealed to ensure that the heaters are
weatherproof.
C
A
50
38
38
70
275
D
G
P
C
M
N
B
E
38
38
108
F
H
J
L
K
A
Front View
Side View
Rear View
Model 015/020/030 040 050 060/070/080 0100
A
Width
mm
(in)
723
28.5
853
33.6
857
33.7
1016
40
1016
40
B
Depth, Cabinet Only
mm
(in)
860
33.9
860
33.9
1015
40
1676
66
1994
79
C
Height, Cabinet Only
mm
(in)
1778
70
1956
77
1956
77
1956
77
1956
77
D
Depth Overall
mm
(in)
1396
55
1498
59
1657
65
2483
98
2800
110
E
External Heater Housing
mm
(in)
373
15
474
19
474
19
639
25
639
25
F
Width Overall
mm
(in)
840
33
973
38
973
38
1132
45
1132
45
G
Air Outlet Spigot - Depth
mm
(in)
476
19
476
19
610
24
1238
49
1524
60
H
Air Outlet Spigot - Width
mm
(in)
648
26
781
31
781
31
940
37
940
37
J
Flue Diameter
mm
(in)
178
7
178
7
178
7
229
9
229
9
K
Rear Return/Fresh Air Inlet - Width
mm
(in)
648
26
781
31
781
31
NA NA
L
Rear Return/Fresh Air Inlet - Height
mm
(in)
178
7
178
7
178
7
229
9
229
9
M
Left/Right Return Fresh Air Inlet - Height
mm
(in)
457
18
560
22
560
22
560
22
560
22
N
Left/Right Return Fresh Air Inlet - Width
mm
(in)
781
31
781
31
940
37
1600
63
1918
76
P
Rear of Heater to Air Outlet Spigot*
mm
(in)
401
16
401
16
426
17
96
4
96
4
COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
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4.3 Air Outlet and Flue Arrangements
4.3.1 Vertical and Horizontal Heaters - Free Blowing (top view)
NOTE: Models 015-020 are fitted with 229 mm (9") diameter discharge heads as standard.
Models 030-0100 are fitted with 356 mm (14") diameter discharge heads as standard.
4.3.2 Vertical and Horizontal Heaters - Air Outlet Spigots (top view)
Outlet Spigot Dimensions
165
015/020
165
030
203
040
229
050
184
060/070/080
284
0100
38
38
K
38
100
L
343
015/020/030
38
38
K
38
100
L
343
040
38
38
38
100
L
368
K
050
K
38
100
400
38
38
L
060/070/080
432
K
38
100
38
38
L
0100
Model 015/020/030 040 050 060/070/080 0100
K
Spigot width
mm
(in)
648
26
781
31
781
31
940
37
940
37
L
Spigot Depth
mm
(in)
476
19
476
19
610
24
1238
49
1524
60
SECTION 4: SPECIFICATIONS
11 of 85
4.4 General Technical Data Table (all models)
Appliance Category II
2H/L 3B/P
NOTE: *Models 40 & 50 are available with 230 V 1 Ø electrical supply as an extra cost option.
A permanent uninterrupted electrical supply is required for all models.
When reading the following data tables, ensure that you are using the correct table for the burner and gas
valve installed. The data tables include a burner reference letter that can be found on the heater data plate.
Refer to the burner manufacturer’s instructions and the specific instructions supplement where applicable.
The burner settings shown in the instructions must be used for burner settings.
4.5 Technical Data - Ecoflam ON/OFF Burners
NOTE: For adjustment of head setting, see Ecoflam Instructions.
Model 015 020 030 040 050 060 070 080 0100
Electrical Supply* 230 V / 50 Hz / 1 Ø 400 V / 50 Hz / 3 Ø
Main Fan Motor Type Direct Drive Belt Drive
Motor Size (kW) 0.75 2.2 1.5 2.2 4.0
Motor Pulley (PCD) NA
2 A x
80 mm
2 A x 95 mm
2 A x
106 mm
Fan Pulley (PCD) NA
2 A x
180 mm
2 A x
180 mm
2 A x
180 mm
2 A x
180 mm
Start Current (Amps) 24 24 28 21 21 10.2 30 30 35
Run Current (Amps) 5.3 5.3 6.3 6.2 6.2 3.5 5.1 5.1 9.6
Airflow
(m
3
/h)
3398 3398 5097 6796 8495 11044 12443 12443 17330
Free Blowing
(ft3/min)
2000 2000 3000 4000 5000 6500 7500 7500 10200
Model 015 020 030 040 050 060 070 080 0100
Gross Heat Input
(kW)
(Btu/h) x (1000)
55.5
189.4
73.3
250.1
93.2
318.0
129.9
443.2
162.0
552.7
208.0
709.7
242.0
825.7
275.2
939.0
348.5
1189.1
Net Heat Input
(kW)
(Btu/h) x (1000)
50.0
170.6
66.0
225.2
84.0
286.6
117.0
399.2
146.0
498.2
187.4
639.4
218.0
743.8
248.0
846.2
314.0
1071.4
Heat Output
(kW)
(Btu/h) x (1000)
47.4
161.7
61.2
208.8
77.1
263.0
107.4
366.5
134.5
458.9
171.5
585.2
200.8
685.1
230.4
786.1
289.5
987.8
Pressure Switch
Setting
(mbar) 4.8
Gas Connection (in) 1/2 3/4 1 1 1/4
Natural Gas (G20) Data - Inlet Pressure 20 mbar (7.8 in WG) Min 17 mbar (6.8 in WG) Max 25 mbar (10 in WG)
Main Burner Gas
Pressure
mbar 5.5 4.8 7 8.3 8.3 8 8.5 8.8 10.0
Gas Rate
(m3/h)
(ft
3
/h)
5.3
187
7.0
247
8.9
314
12.4
438
15.4
546
19.8
701
23.1
816
26.2
928
33.2
1175
Burner Type
Max Gas 70Max Gas
105
Max Gas
105
Max Gas
170
Max Gas
170
Max Gas
250
Max Gas
250
Max Gas
350
Max Gas
350
Burner Head TL TC TC TC TC TC TC TC/TL TC/TL
Burner Head Setting (mm) 1.5 1.5 2.8 0.8 2 3.5 5 1 1.5
Air Setting
Air Damper Posi-
tion
3 3 14 5 5 4.5 5 2.3 4
Valve Type Main Gas
MB-DLE
403
MB-DLE 405 MB-ZRDLE 407 MB-ZRDLE 410 MB-ZRDLE 412
LPG Gas Propane (G31) Data - Inlet Pressure 37 mbar (14.6 in WG) Min 25 mbar (10 in WG) Max 45 mbar (18 in WG)
Main Burner Gas
Pressure
mbar 5.4 3.9 4.8 9.4 8.3 8.5 8.4 7.3 10.1
Gas Rate
(m3/h)
(kg/h)
2.1
3.9
2.8
5.2
3.5
6.5
4.9
9.1
6.1
11.3
7.8
14.4
9.1
16.9
10.4
19.3
13.1
24.3
Main Gas Orifice (mm dia) 8.5 10.0 10.0 14.5 14.5 14.5 14.5 14.5
Burner Type
Max Gas
70
Max Gas 105 Max Gas 170 Max Gas 250 Max Gas 350
Burner Head TL TC TC TC TC TC TC TC/TL TC/TL
Burner Head Setting (mm) 1 1 2 0 1.8 2.8 4.2 1 1.5
Air Setting
Air Damper Posi-
tion
3 3 14 5 5 4.5 5 2.3 4
Valve Type Main Gas
MB-DLE
403
MB-DLE 405 MB-ZRDLE 407 MB-ZRDLE 410 MB-ZRDLE 412
COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
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4.6 Technical Data - Ecoflam 2-Stage Burners
NOTE: The air setting is a guide only. The final setting is subject to combustion testing.
When setting the minimum firing rate, a check must be made following the setting of the burner combustion.
The check is made by running the heater on low fire for a minimum of 15 minutes at the full transport air
rate and at typical ambient conditions. During the test, check that the flue gas temperature does not fall
below 125° C (257° F). Should the flue gas temperature fall below 100° C (212° F), then the low fire gas
setting must be increased to a value that will achieve 125° C (257° F) flue gas temperature; otherwise
condensation may form in the heat exchanger and flue, causing rapid corrosion and short operational life.
NOTE: For adjustment of head setting, see Ecoflam Instructions.
Model 020 030 040 050 060 070 080 0100
Maximum Gross Heat Input
(kW)
(Btu/h) x (1000)
73.3
250.1
93.2
318.0
129.9
443.2
162.0
552.7
208.0
709.7
242.0
825.7
275.2
939.0
348.5
1189.1
Maximum Net Heat Input
(kW)
(Btu/h) x (1000)
66.0
225.2
84.0
286.6
117.0
399.2
146.0
498.2
187.4
639.4
218.0
743.8
248.0
846.2
314.0
1071.4
Minimum Gross Heat Input
(kW)
(Btu/h) x (1000)
51.3
175.0
65.2
222.5
90.9
310.2
113.4
386.9
145.6
496.8
169.4
578.0
192.6
657.2
244.0
832.5
Minimum Net Heat Input
(kW)
(Btu/h) x (1000)
46.2
157.6
58.8
200.6
81.9
279.5
102.2
348.7
131.2
447.7
152.6
520.7
173.6
592.3
219.8
750.0
Maximum Heat Output
(kW)
(Btu/h) x (1000)
61.2
208.8
77.1
263.0
107.4
366.5
134.5
458.9
171.5
585.2
200.8
685.1
230.4
786.1
289.5
987.8
Minimum Heat Output
(kW)
(Btu/h) x (1000)43147
55
188
77
263
94
321
124
423
144
491
161
549
205
699
Pressure Switch Setting (mbar) 4.8
Gas Connection (in) 1/2 3/4" 1 1 1/4
Natural Gas (G20) Data - Inlet Pressure 20 mbar (7.8 in WG) Min 17 mbar (6.8 in WG) Max 25 mbar (10 in WG)
Main Burner Gas Pressure (mbar) 5.4 6.8 8.6 9 8.5 12.5 8 10.2
Min. Burner Gas Pressure (mbar) 3.3 2.8 3.5 4 4.8 7.5 4.5 5.6
Maximum Gas Rate
(m3/h)
(ft
3
/h)
7.0
247
8.9
314
12.4
438
15.4
544
19.8
699
23.1
816
26.2
925
33.2
1172
Minimum Gas Rate
(m
3
/h)
(ft
3
/h)
5.4
190.7
5.6
197.8
7.5
264.9
9.6
339.0
14.8
522.7
17.9
632.1
20.2
713.4
25.2
889.9
Burner Type Max Gas 120 Max Gas 170 Max Gas 250 Max Gas 350
Burner Head TC TC TC TC TL TL TC/TL TC/TL
Burner Head Setting (number) 1 1 1 1.5 3.2 5 1 1.5 / 1.8
Low Flame Air Orange Cam ** 30° 1 1.5 1.8 1.9 1.7 1.5
High Flame Air Red Cam ** 36° 73° 2.5 5 5 4 2.2 1.8
Valve Type Main Gas MB-ZRDLE 405 MB-ZRDLE 407 MB-ZRDLE 410 MB-ZRDLE 412
LPG Gas Propane (G31) Data - Inlet Pressure 37 mbar (14.6 in WG) Min 25 mbar (10 in WG) Max 45 mbar (18 in WG)
Main Burner Gas Pressure (mbar) 2.7 4.4 9.3 8.4 8.4 8.3 8 10.1
Min. Burner Gas Pressure (mbar) 1.9 1.3 4.8 3.9 3.9 4.8 7.4 5.3
Maximum Gas Rate
(m3/h)
(kg/h)
2.8
5.1
3.5
6.5
4.9
9.1
6.1
11.3
7.8
14.5
9.1
16.9
10.4
19.2
13.1
24.3
Minimum Gas Rate
(m
3
/h)
(kg/h)
1.9
3.5
1.9
3.5
3.3
6.1
4.1
7.6
6.2
11.4
6.6
12.2
6.5
12.0
10.2
19.0
Main Gas Orifice (mm dia) 10.0 14.5 NA
Burner Type Max Gas 120 Max Gas 170 Max Gas 250 Max Gas 350
Burner Head TC TC TC TC TL TL TC/TL TC/TL
Burner Head Setting (mm) 1 1 0 1.7 2.7
4.2 1 1.5
Low Flame Air Orange Cam ** 30° 25° 1
1.5 1.9
1.9 1.5
2
High Flame Air Red Cam ** 35° 55° 3 5 5 5 2.1 5
Valve Type Main Gas MB-ZRDLE 405 MB-ZRDLE 407 MB-ZRDLE 410 MB-ZRDLE 412
SECTION 4: SPECIFICATIONS
13 of 85
4.7 Technical Data - Ecoflam Oil-Fired Burners
NOTE: For adjustment of head setting, see Ecoflam Instructions.
* Nozzle sizes are quoted in US gal/h. Fuel consumption is quoted in imperial gal/h.
Model
015 020 030 040 050 060 070 080 0100
Gross Heat Input
(kW)
(Btu/h) x (1000)
55.5
189.4
73.3
250.1
93.2
318.0
129.9
443.2
162.0
552.7
208.0
709.7
242.0
825.7
275.2
939.0
348.5
1189.1
Heat Output
(kW)
(Btu/h) x (1000)
47.4
161.8
61.2
208.9
78.4
267.4
110.2
375.9
134.5
458.8
177.7
606.5
205.3
700.3
230.4
786.2
293.4
1001.0
Burner Type MAX 8 MAX 8 MAX 12 MAX 15 MAX 15 MAX 20 MAX 20 MAX 30 MAX 35
Oil Pump Connections (in) 3/8
Light Fuel Oil (Gas Oil) Data
Nozzle Size *US (gal/h) 1.1 1.35 1.75 2.25 3 4.5 5 5.5 2.5
Angle & Type 60°H 60°B
60°S 60°B 60°B
Make Danfoss
Head Setting (number) 0 1 0.5 0 0 1.5 1.5 1.5 1.5
Air Setting (number) .45 (1/2) 1.4 4 2 2.5 2.3 3 4.5 3
Burner Fuel Pressure
(Bar)
(lbf/in
2
)
10.6
154
13
189
12.5
181
15.5
225
14
203
11
160
10.3
149
10.3
149
12
174
Fuel Consumption
(L/h)
*UK (gal/h)
5.3
1.17
7.0
1.55
8.9
1.96
12.4
2.73
15.6
3.43
20.0
4.4
23.2
5.1
26.4
5.8
30.56
6.72
Maximum Oil Pressure to
Pump Inlet
(Bar)
(lbf/in
2
)
2
2.9
Kerosene Data
Nozzle Size *US (gal/h) 1.25 1.65 2.25 3 3.5 5 5.5 6 5.5
Angle & Type 60°EH
60°B 60°ES 60°B
60°B
Make Danfoss
Head Setting (number) 0 1 0.5 0
0 1.5 1.5 1.5
1.5
Air Setting (number) .45 (1/2) 1.4 4 2 2.5 2.3 3 4.5 3
Burner Fuel Pressure
(Bar)
(lbf/in
2
)
8.6
125
9
131
8.1
117
9.5
138
7 / 10
102 / 145
9.5
138
8.5
123
9.5
138
8.5
123
Fuel Consumption
(L/h)
*UK (gal/h)
5.5
1.2
7.2
1.6
9.2
2.0
12.8
2.8
16.1
3.5
20.6
4.5
23.9
5.3
27.2
6.0
31.5
6.9
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4.8 Technical Data - Ecoflam 2-Stage Oil Burners
Model 030 040 050 060 070 080 0100
Maximum Gross Heat Input
(kW)
(Btu/h) x (1000)
93.2
318.0
129.9
443.2
162.0
552.7
208.0
709.7
242.0
825.7
275.2
939.0
348.5
1189.1
Maximum Net Heat Input
(kW)
(Btu/h) x (1000)
84.0
286.6
117.0
399.2
146.0
498.2
187.4
639.4
218.0
743.8
248.0
846.2
314.0
1071.4
Minimum Gross Heat Input
(kW)
(Btu/h) x (1000)
65.2
222.5
90.9
310.2
113.4
386.9
145.6
496.8
169.4
578.0
192.6
657.2
244.0
832.5
Minimum Net Heat Input
(kW)
(Btu/h) x (1000)
58.8
200.6
81.9
279.5
102.2
348.7
131.2
447.7
152.6
520.7
173.6
592.3
219.8
750.0
Maximum Heat Output
(kW)
(Btu/h) x (1000)
77.1
263.0
107.4
366.5
134.5
458.9
171.5
585.2
200.8
685.1
230.4
786.1
289.5
987.8
Minimum Heat Output
(kW)
(Btu/h) x (1000)55188
77
263
94
321
124
423
144
491
161
549
205
699
Light Fuel Oil (Gas Oil) Data
Burner Type MAX 12 MAX 15 MAX 15 MAX 25 MAX 25 MAX 25 MAX 35
Oil Pump Connection 3/8
Nozzle Size US (gal/h) 1.5 2.25 3 2.75 / 1.5 3.00 / 2.00 3.50 / 2.00 4.50 / 2.50
Angle & Type 60° H 60° B
60° B / 60°
H
60° B 60° B 60° B
Make Danfoss
Head Setting number 0.5 0 0 1 1.5 3.5 1.5
Low Air Setting number 3.8 1.5 1.9 1.6 2.1 1.8 1.5
High Air Setting number 2 2 2.5 2.5 4.5 5 3
Burner Fuel Pressure
Bar 16 / 10 7 / 15.5 15 / 8 11 11 12 12
lbf/in^2
232.1 /
145.0
101.5 /
224.8
217.6 /
116.0
159.5 159.5 174.0 174.0
Low Fuel Consumption
L/h 7 8.5 12.9 12.7 14.3 17 21.1
UK (gal/h) 1.5 1.9 2.8 2.8 3.1 3.7 4.6
High Fuel Consumption
L/h 8.9 12.4 15.6 20 23.3 26.4 33.5
UK (gal/h) 2.0 2.7 3.4 4.4 5.1 5.8 7.4
Maximum Pressure to Pump inlet
Bar 2
lbf/in^2 2.9
Kerosene Data
Nozzle Size *US (gal/h) 1.75 3.00 3.50 3.00 / 2.00 3.50 / 2.50 4.00 / 2.50 5.50 / 3.00
Angle & Type 60°EH
60°B
Make Danfoss
Head Setting (number) 0.5 0 0 1
1.5 3.5 1.5
Low Air Setting (number) 3.8 1.5 1.9 1.6 2.1 1.8 1.5
High Air Setting (number) 2 2 2.5 2.5 4.5 5 3
Burner Fuel Pressure
(Bar)
(lbf/in
2
)
7 / 12
101.5 /
174.0
7 / 9.5
101.5 /
137.8
10
145.0
9.5
137.8
8.5
123.3
10
145.0
8.5
123.3
Low Fuel Consumption
(L/h)
*UK (gal/h)
5.5
1.2
7.2
1.6
9.2
2.0
12.8
2.8
16.1
3.5
20.6
4.5
23.9
5.3
High Fuel Consumption
(L/h)
*UK (gal/h)
9.2
2.0
12.8
2.8
16.1
3.5
20.6
4.5
24.0
5.3
27.2
6.0
34.5
7.6
SECTION 5: HEATER INSTALLATION
15 of 85
SECTION 5: HEATER INSTALLATION
5.1 General
Heaters are designed for floor standing vertical
installation. Special versions supplied with steel
channels to support the heater are available and
may be mounted horizontally. When installed
horizontally, the heater will normally lie on its left
side when viewed from the burner. The heater
should be placed on a firm, level, non-combustible
surface that can support its weight. See Page 8,
Section 4.1 for weight details.
5.2 Handling
All cabinet heaters are supplied with an integral
pallet and shrink wrapped. Remove pallet before
installing the heater.
Figure 3: Typical Installation of an Gas-Fired Cabinet Heater
*100 mm (4") and 150 mm (6") flue use stainless steel or aluminium flue pipe.
** 229 (9") mm flue use stainless steel single wall flue pipe only.
Crush Hazard
Use proper lifting
equipment and
practices.
Falling Hazard
Use proper safety
equipment and practices to avoid falling.
Severe Injury Hazard
Use proper lifting
practices and equipment.
Equipment and
accessories are
heavy.
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.
COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
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Figure 4: Typical Installation of an Oil-Fired Cabinet Heater
*Only single wall stainless steel flue is to be used on oil-fired cabinet heaters.
SECTION 6: FLUE INSTALLATION
17 of 85
SECTION 6: FLUE INSTALLATION
6.1 Flue Installation
The flue must terminate outside of the building.
Flues and air intakes must be a fully sealed system
and correctly sized for the model. See Page 8,
Section 4.1. Flues should be assembled as on Page
18, Figure 5 through Page 21, Figure 13. The joints
between the flue and the roof or wall must be
properly sealed. If the flue passes through a wall or
ceiling of combustible material it must be enclosed
by a sleeve of non-combustible material and be
separated from the sleeve by at least a 25 mm (1")
air gap.
For double walled flue pipe conforming to BS 715,
the 25 mm (1") separation distance should be
measured from the outside surface of the inner liner.
For double wall flue pipe conforming to BS 4543-2
and 3, the external skin and air gap constitutes
insulation to a standard where no extra clearances
to combustibles material is required other than
normal installation tolerances.
Flues must be ade
quately supported so that the
heater does not bear the weight of the flue.
For straight and offset flue termination, See Page
18, Figure 5 and Figure 6.
Horizontal Flue Installation
Horizontal flue should be fitted ensuring a slight
gradient approximately 2° towards the terminal.
Where condensation is likely, traps should be
included to encourage the condensate to flow freely
to a point from which it may be released, preferably
into a gully. Condensate must not be allowed to
drain back into the heater as this could result in
corrosion and damage.
The condensate pipe from the flue to the disposal
point must be made from corrosion resistant pipe of
not less than 25 mm (1") internal diameter.
90° bends and horizontal pipe must not be used
in flues except for the immediate connection to a
room-sealed heater [1 m (3.5') max]. 135° bends
are used to offset the flue as on Page 18, Figure 6.
If condensation is likely to occur in the flue, then
provision should be made for drainage.
When designing the flue system, the prevention of
the formation and entrapment of condensation must
be a key consideration.
Only single wall stainless steel flue is to be used
on oil-fired cabinet heaters.
WARNING
Carbon Monoxide Hazard
Heater must be vented.
Heater must be installed according to the
installation manual.
Failure to follow these instructions can result
in death or injury.
WARNING
Fire Hazard
Keep all flammable objects, liquids and
vapours 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.
WARNING
Cut/Pinch Hazard
Wear protective gear during installation,
operation and service.
Edges are sharp.
Failure to follow these instructions can result
in injury.
COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
18 of 85
Figure 5: Flue Termination
6.2 Type B
22
Appliance
The flue must terminate outside the building and be
fitted with a low resistance terminal.
See Page 15, Figure 3 through Page 16, Figure 4.
Figure 6: Offset Flues with 135° Bends
Description Part Number
Flue Adapter (100 mm) 90501018K
Flue Adapter (130 mm) 90501019K
SECTION 6: FLUE INSTALLATION
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Figure 7: 90° Horizontal Flue
Figure 8: Guy Wire
Figure 9: Socket Direction (Stainless Steel)
Figure 10: Flue and Roof Detail (Stainless Steel)
COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
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Figure 11: Flue Installation (Models 15 - 100) Figure 12: Balanced Flue (Vertical)
NOTE: The balanced flue option is only available on
models 15, 30, 40 and 50.
6.3 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. See Page 20, Figure 12 through Page 21,
Figure 13. The wire mesh inside the fresh air
adapter on the heater must be removed prior to
installation.
If it is necessary to cut any section of flue, the
cut is made at the bottom of the lowest section
where it connects to the heater.
Description Part Number
Flue Adaptor 100 mm (4’) Cabinet 90501018K
Flue Adaptor 130 mm (6’) Cabinet 90501019K
Model Concentric Flue Diameter
15 (100 mm) 150 mm
30 - 50 (130 mm) 200 mm
SECTION 6: FLUE INSTALLATION
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Figure 13: Balanced Flue (Horizontal)
Model Concentric Flue Diameter
15 (100 mm) 150 mm
30 - 50 (130 mm) 200 mm
COMBAT® CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
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SECTION 7: AIR SUPPLY
7.1 Room Sealed Installation
When installed as a room sealed heater, the air for
combustion is drawn in from outside the building. It
is important to ensure that there is adequate
ventilation to provide air for the distribution fan/s.
7.2 Open Flued Installation
It is important to ensure that there is adequate air
supply at all times for both combustion and heating
requirements in accordance with local and national
codes. When installed in this mode, the air supply to
the heater must also be fitted with a low resistance
terminal to prevent the ingress of debris. See Page
15, Figure 3 or Page 16, Figure 4.
7.2.1 Heaters Installed Within the Heated Space
Where the volume of the heated space is greater
than 4.7 m
3
per kilowatt of total rated heat input and
the air change rate is at least 0.5/h, additional high
and low level ventilation will not be required.
For a building having an air change rate less than
0.5/h, ventilation will be necessary in accordance
with local and national codes. Ventilation direct to
outside must be provided as follows:
• Heaters up to 70 kW heat input: 5.0 cm
2
per kW
of rated heat input
• Heaters above 70 kW heat input: 350 cm
2
+ 2.5
cm
2
per kW of rated heat input above 70 kW
7.3 Building Ventilation
Where ventilation is required, air must be taken from
an outside point where it is not likely to be
contaminated or obstructed.
Where natural ventilation is used, suitable ventilation
with outside air at low level must be provided in
accordance with Section 7.2.1 and local and national
codes.
Where mechanical ventilation is used, extract rate
must be 5% - 10% less than the inlet rate. The
mechanical ventilation must be interlocked with the
burner on the heater.
7.4 Isolated Equipment Rooms
Ventilation must prevent the isolated equipment
room temperature from exceeding 32° C as well as
prevent any negative air pressure within the room.
Any isolated equipment room containing air heaters
will requ
ire permanent air vents direct to outside air
in compliance with local codes.
Where natural ventilation is used, suitable
permanent openings at low and high level,
communicating directly with the outside air, must be
provided.
Where mechanical ventilation is used, extract rate
must be 5% - 10% less than the inlet rate. The
mechanical ventilation must be interlocked with the
burner on the heater.
WARNING
Explosion Hazard
Equipment must have access to
uncontaminated air at all times.
Failure to follow these instructions can result
in death, injury or property damage.
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