COMBAT Elite ELG 75-235 Guide

1
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. Immediateley call your local fuel supplier
after leaving the building.
8. Follow the fuel supplier’s instructions
9. If you cannot reach your fuel supplier, call
the Emergency Services.
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
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.
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.
Installation must be done by a registered installer/
contractor qualified in the installation and service
of gas-fired heating equipment or your gas
supplier.
WARNING
Elite
Combat Elite Cabinet Heater - Publication CBT0007 January 2020
Cabinet Heaters
Installation and Commissioning
Manual
Models:
Gas Fired Model ELG 75-235
Oil Fired Model ELO 75-235

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CE Declaration of Conformance
We declare that the following range of Combat Warm Air Unit Heaters:
Models: Elite ELG/ELO 75, 105, 135, 185, 235
Have been designed and manufactured to comply with the following
EC Directives and Standards:
The Essential Gas Appliance Regulation (EU) 2016/426
Energy Related Product Directive (ErP-Lot 21 Warm Air) 2009/125/EC
Product Certificate Number: CE/0558/017/179
Report Number: 222048
Notified Body: Kiwa Gastec-0558-Date ISSUED April 2018
Combat Heating Solutions Limited
Registered at
Unit 20 Red Mill Industrial Estate
Rigby Street
Wednesbury
West Midlands
WS10 0NP
Company Registration Number 11091275
Tel: [phone]
Email: [email protected]
Web: www.combat.co.uk

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Page
Section 1 Heater Safety
1.1 Manpower Requirements 6
1.2 Safety Labels and their Placement 6
Section 2 Installer Responsibility
2.1 Laminated Wall Plate 8
2.2 corrosive Chemicals 8
2.3 National Standards and Applicable 9
Section 3 Critical Considerations
3.1 Basic Information 10
3.2 Location and Suspension 10
3.3 Required Clearances to Combustibles. 10
3.4 Ventilation 11
3.5 Fuel Supply 11
3.6 Electrical Supply 12
3.7 Flue 12
Section 4 Specifications
4.1 ELG & ELO Heaters 13
4.2 Air Outlet and Flue Arrangements 14
4.3 General Technical Data (all models)
Appliance Category 11 15
4.4 Technical Data - Elco Two Stage Gas
Fired Burners 15
4.5 Technical Data - Ecoflam Two Stage Oil
Burners 17
Section 5 Heater Installation
5.1 General 18
5.2 Handling 18
Section 6 Flue Installation
6.1 Flue Installation 20
6.2 Type B22 appliance 21
6.3 Type C12 C23 & C62 Appliance 23
Section 7 Air Supply
7.1 Room Sealed Installation 24
7.2 Open Flued Installation
7.2.1 Heater Installed Within Heated Space 24
7.3 Building Ventilation 24
7.4 Isolated Equipment Rooms 24
Section 8 Fuel Pipework
8.1 Connection 25
Page
8.2 Fuel Oil Supply 26
8.2.1 Fuel Storage Tank 26
8.2.2 Fuel Pipes 26
8.2.3 Gravity Feed Systems 26
Section 9 Wiring and electrical Information
9.1 Electrical Supply 27
9.2 Remote Controls 27
9.2.1 Burner Controls (thermostat) 27
9.2.2 Positioning Room Thermostats or
Combat Control (if not factory fitted) 27
9.2.3 Remote Frost Thermostat 27
9.2.4 controls for High/Low Burner Control 27
9.2.5 Remote Fan Controls 27
9.3 Wiring Diagram Elite Cabinet EL75 28
9.4 Wiring Diagram Elite Cabinet EL 105-135 29
9.5 wiring Diagram Elite Cabinet EL185-235 30
Section 10 Commissioning
10.1 Pre-Commision Checks 31
10.1.1 Air Delivery Heads 32
10.1.2 Electrical Checks 32
10.1.3 Polarity Test (1 Ø)32
10.1.4 Polarity Test (3 Ø)32
10.1.5 Fan rotation Check 32
10.1.6 Fan Motor Overload Check 32
10.1.7 Mechanical Checks 32
10.1.8 Burner (gas heaters) 32
10.1.9 Gas Supply 32
10.1.10 Before Operating the Heater 32
10.2 Commissioning the Two-Stage (High/Low)
burner (gas heaters) 33
10.2.1 Set Gas Rate 33
10.2.2 Check Gas Rate 33
10.2.3 Control Gas Fired Heaters 33
10.2.4 A Description of Gas Fired Heater
Control 33

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Page
10.3 Motor Starter and Terminal Overload 34
10.3.1 Burners 34
10.4 Gas Valves 34
10.4.1 Main Gas Valves 34
10.4.2 Throughput Adjuster 34
10.5 Combustion Testing (all models) 34
10.5.1 Pressure Switch 34
10.5.2 Complete the Commissioning 34
10.6 Commissioning the Burner (oil heaters) 34
10.6.1 Burner Settings 34
10.6.2 Preparation for Burner Pressure Test 35
10.7 Control Oil Fired Heaters 35
10.7.1 Description of Oil Fired Heater Controls 35
10.7.2 Sequence of Operation 35
10.7.3 Fault Conditions 35
10.7.4 Switching On 35
10.7.5 Blocked Flue 35
10.7.6 Adjust Burner Oil Pressure 36
10.7.7 Set Combustion 36
10.7.8 Turning Off the Heater (all models) 36
10.9 External Controls 36
10.10 Instruction to the User 36
Section 11 User Instructions
11.1 User Instructions 39
11.1.1 Heater Operation 39
11.1.2 Heater Operation (high/low) 39
11.2 Common User Controls (all models) 39
11.2.1 Combination Fan/Limit Thermostat 39
11.2.2 Burner Lockout Reset Button 39
11.3 Lighting Instructions (all models) 39
11.3.1 To Turn Heater On 39
11.3.2 To Turn Heater Off 40
11.4 Simple Fault Finding (all models) 40
11.4.1 Simple Fault Finding (buner faults) 40
11.4.2 Simple Fault Finding (oil fired heaters) 40
11.4.3 Blocked Flue 40
11.4.4 Limit Thermostat 40
Page
Section 12 Service and Maintenance
12.1 Servicing Instructions 41
12.2 Burner Maintenance 41
12.3 Fan Motor Assembly Maintenance
(all models) 42
12.4 Heat Exchanger Maintenance 42
12.5 Thermal Insulation 42
12.6 Maintenance Checklist 42
Section 13 Conversion Between Fuels
13.1 General 44
13.2 Burner Conversion 44
Section 14 Troubleshooting
14.1 General Troubleshooting 46
14.2 For Main Fan Circuit (1 Ø) 47
14.3 Troubleshooting for Main Fan Circuit
(3 Ø)48
Section 15 Removal
15.1 Burner Components 49
15.2 Direct On-Line Main Fan Starter and
Thermal Overload Unit ( 3 Ø) 49
15.2.1 The Contactor 49
15.2.2 The Overload (models 75-235) 50
15.3 Control circuit Protection 50
15.4 combination Fan/Limit Thermostat 50
15.5 Main Fan Motor 50
15.6 Main Fan Units 50

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Combat Heating Solutions Limited 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 with natural gas and LPG when installed,
commissioned and maintained in accordance with these instructions.
These instructions refer to gas appliances designed to operate in the European Union
Appliances designed for other countries (Non -European Union) are available upon request.
These appliances must be installed in accordance with the local and national codes in force by registered
persons and only in a sufficiently ventilated space, as specified in these instructions.
Before installation, check the local gas distribution systems, nature of gas and pressure, and adjustment
of the appliance are compatible.
2019 Combat Heating Solutions Limited
All rights reserved. No part of this work covered by the copyrights herein may be reporduced or copied in
any form or by any means - graphic, electronic, or mechanical including photocopying, recording, taping
or information storage and retieval services - without written permission of
Combat Heating Solutions Limited
Figure Page
Figure 1 Burner and Combustion Label Placement 7
Figure 2 Installation and Combustibles Clearances 11
Figure 3 Typical Installation (gas fired cabinet) 18
Figure 4 Typical Installation (oil fired cabinet) 19
Figure 5 Flue Termination 21
Figure 6 Offset Flues ith 135Bends 21
Figure 7 90Horizontal Flue 22
Figure 8 Guy Wire 22
Figure 9 Socket Direction (stainless steel) 22
Figure 10 Flue and Roof Detail (stainless steel) 22
Figure 11 Flue Installation (75-235 models) 23
Figure 12 Gas-Fired Room Sealed Horizontal Flue 23
Figure 13 Gas Connection 26
Figure 14 Combination Thermostat 32
Figure 15 Gas-Fired Heater control Box Sequence 33
Figure 16 Gas Train Circuit For Dungs Vale 34
Figure 17 Oil Fired Heaters control Box Sequence 36
Figure 18 Heater Operating Sequence 38
Figure 19 Fan/Limit Thermostat 39
Figure 20 Limit Reset 40
Figure 21 Belt Tension 42
Figure 22 Combination Fan Limit Stat Parts. 51
Product Approval

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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 the heater
must be carried out by a registered installer/contractor
qualified in the installation and service of gas-fired
heating equipment.
Read all manuals supplied with the appliance carefully
before installation, operation, or service of this
equipment.
This heater is designed for heating only 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, flueing, 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 various flue 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 installed 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 the use of the
appliance by a responsible person for their safety.
Children should be supervised to ensure that they
do not play with the appliance.
For additional copies of the Commissioning,
Operation and Service Manual, or relevant burner
and gas train manuals, please contact:
Combat Heating Solutions Limited
Tel:[phone]
email: [email protected]
Web: www.combat.co.uk
1.1 Manpower Requirements
To prevent personal injury and damage to the
heater a minimum of two persons will be required
for installation.
1.2 Safety Labels and their placement
Product safety labels should be replaced by the
product user when they are no longer legible.
Contact Combat Heating Solutions Limited for
obtaining replacement signs or labels.
Heater SafetySection 1

7
Combat HVAC Limited
Figure 1 : Burner and Combustion Label Placement
Heater SafetySection 1

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To install the heater, as well as the fuel and electrical
supplies, in accordance with applicable specifications
and regulations Combat Heating Solutions 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 national regulations 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 the 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 the heater.
• To ensure that there is sufficient ventilation in the
area to comply with the requirements of all relevant
local and national regulations.
• 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.
A copy of the wall plate is illustrated on the back cover.
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
Know your model number and installed configuration.
The 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
Combat Heating Solutions 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 on the premisses.
*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.
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.
Installer ResponsibilitySection 2

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2.3 National Standards and Applicable
Regulations.
All appliances must be installed in accordance with
the latest revision of applicable standards and local
national regulations.
This refers also to the electric, gas and venting, flueing
and insulation ventilation.
Note: Additional standards for installations in public
garages, aircraft hangers, etc, may be applicable.
The main relevant regulations for installation within the
UK are:
Gas Safety (installation and use) regulation, 1984 and
amendments - 1996
• BS6230 - Specification for the installation of gas-
fired forced convection air heaters for commercial
and industrial space heating with rated input
exceeding 60kW. (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 44kW 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 act.
• Requirements of the local authority, fire officer and
insurance company.
Installer ResponsibilitySection 2

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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.
3.1 Basic Information
Cabinet heaters are supplied with burners suitable for
high/low operation as standard for gas and oil-fired
burners.
3.2 Location and Suspension All Models:
• Must be installed indoors within the heated space.
• 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 13,
Section 4.1 for weight details.
• Special versions of 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
clearances and comments on panels must be
used, except for the side the heater lies on.
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 11, 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 applications 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 the heater or any other appliance.
• Do not spray aerosols in the vicinity of this appliance.
• The stated clearances to combustibles represents
a surface temperature of 50ºC (90º F) above room
temperature. 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 and then the end users responsibility
upon handover.
• Products of size and weight that could possibly be
drawn into the distribution air intake must not be
stored in close proximity to the heater to prevent
any such potential ingress.
Critical ConsiderationsSection 3