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A
SSEMBLY
, I
NSTALLATION
& S
ERVICING
M
ANUAL
FOR
A MBI R AD V ISION
®
VSO & VSXO
R ANGE OF R ADIANT T UBE H EATERS
INDEX
Introduction and Document Index
Section
Commissioning Instructions ----------------------------------------------3
Servicing Instructions ------------------------------------------------------4
Spare Parts -------------------------------------------------------------------5
Fault Finding Guide --------------------------------------------------------6
Replacing Parts -------------------------------------------------------------7
User and Operating Instructions ----------------------------------------8
WARNINGS
AmbiRad equipment must be installed and maintained in accordance with the relevant provisions of the Gas Safety (Installations and Use) Regulations 1998 for gas fired products.
Due account should also be taken of any obligations arising from the Health and Safety at
Works Act 1974 or relevant codes of practice. In addition the installation must be carried out in accordance with the current IEE wiring regulations (BS 7671), BS 6896 (Industrial &
Commercial) and any other relevant British Standards and Codes of Practice by a qualified installer. All external wiring MUST comply with the current IEE wiring regulations.
1
2
Introduction.
Welcome to the new range of high efficiency
AmbiRad Vision radiant tube heaters. Local regulations may vary in the country of use and it is the installers responsibility to ensure that such regulations are satisfied.
All installation, assembly, commissioning and service procedures must be carried out by suitably qualified and competent persons to the statutory regulations in the country of use.
When assembling, installing, commissioning and servicing is undertaken on radiant tube heaters specified in these instructions, due care and attention is required to ensure that working at height regulations are adhered to at the mounting heights specified.
PLEASE READ this document prior to installation to familiarise yourself with the components and tools you require at the various stages of assembly.
All Dimensions shown are in mm unless otherwise stated.
The manufacturer reserves the right to alter
specifications without prior notice.
Document Index.
1 Installation Requirements
1.1 Health & Safety
1.2 Model Definitions
1.3 Heater Suspension
1.4 Wall Mounting
1.5 Herringbone Systems
1.6 Clearance to Combustibles
1.7 Gas Connection & Supply
1.8 Electrical Connections
1.9 Ventilation Requirements
1.9.1 Unflued Radiant Heater
Mechanical Ventilation
Natural Ventilation
1.9.2 Flued Radiant Heater
Mechanical Ventilation
Natural Ventilation
1.10 Flue & Combustion Air Inlet Options
1.10.1 Important Information
1.10.2 Flue Installation
1.10.3 Condensation Considerations
1.10.4 Flue/Tailpipe Connections
1.11 Technical Details
2 Assembly Instructions
2.1 Tools Required
2.2 Assembly Notes
2.2.1 Tubes
2.2.2 Turbulators
2.2.3 Brackets
2.2.4 Couplers
2.2.5 U Bend
2.2.6 Reflectors
2.2.7 End Caps
2.2.8 Burner Assembly
2.2.9 Heat Exchanger Assembly
2.2.10 HB Damper Assembly
2.2.11 Fan Assembly
2.2.12 End Moulding Fixing
2.2.13 HB Manifold Assembly
2.2.14 Detailed Assembly Drawings
3 Commissioning Instructions
3.1 Tools Required
3.2 Balancing the Herringbone System
3.3 Commissioning chart
4 Servicing Instructions
4.1 Tools Required
4.2 Burner Description
4.3 Burner Removal
4.4 Burner Gas Injector Servicing
4.5 Burner Head and Electrode Servicing
4.6 Combustion Fan Assembly Unitary Heater
4.7 Combustion Fan Assembly Powered Burner
4.8 Radiant Tube Servicing
4.9 Heat Exchanger Servicing
4.10 Reflector Servicing
4.11 Inspection of Flue
4.12 Re-commissioning after Service
5 Spare Parts
6 Fault Finding Guide
7 Replacing Parts
7.1 Burner Controller Replacement
7.2 Air Pressure Switch Replacement
7.3 Gas Valve Replacement
8 User and Operating Instructions
8.1 To Start Heater
8.2 To Switch Off Heater
8.3 Routine Maintenance Between Service Intervals
8.4 Frequency of Servicing
3
Isolate any electrical supply to the heater and controller before proceeding.
If there are any doubts as to the strength or suitability of roof steelwork to which heaters are to be suspended, please refer to a Consultant,
Architect or owner of the building. The
1.1 Health and Safety
minimum mounting heights for AmbiRad heaters are given in the table below.
AmbiRad heaters must be installed in accordance with the relevant provisions of the
Gas Safety (Installations and Use) Regulations
1998. Due account should also be taken of any obligations arising from the Health and Safety
Model
MINIMUM
Mounting Height (m)
Horizontal
Inclined / wall mounted
15 4.4 3.9 at Works Act 1974 or relevant codes of practice. In addition the installation must be carried out in accordance with the current IEE wiring regulations (BS 7671), BS 6896
20
25
4.9 4.4
5.4 4.7
30 6.3 5.5 (Industrial & Commercial) and any other relevant British Standards and Codes of
Practice by a qualified installer. Isolate all electrical supplies to the heater & controller
35
40
6.5 5.7
6.9 6.0 before proceeding.
For your own safety we recommend the use of safety boots and leather faced gloves when handling sharp or heavy items. The use of protective eye wear is also recommended.
45
50
7.3 6.5
7.8 6.9
These radiant tube heaters can be wall mounted using the appropriate bracket (AmbiRad part no
WMB-13-22-38). aluminised steel reflectors, end caps, insulation, tube over shields, painted canopies and 35°. and optional end covers.
VSOUH = Vision U Tube Table 1 Angle Mounting
Herringbone heater with painted induced burner, Damper, aluminised steel reflectors,
U end caps, insulation, tube over shields, painted canopies and optional end covers.
VSXO = AmbiRad Vision High efficiency
U Tube heater with forced burner, recuperative
Heater
Size
15 - 50
Required angle
30-35°
Chain length
12 links
Eyebolt position
1 heat exchanger, aluminised steel reflectors, end caps, insulation, tube over shields, painted canopies and optional end covers.
Figure 1.a. Angle Mounting using the Wall mounting bracket
The heater must be suspended by
ALL of the suspension brackets.
See fig 1.b. Attachment to the heater support lugs should be made by a ‘speed link’, D shackle or in the case of drop rods, a closed formed hook. The hanging attachments to overhead steelwork etc. must be purpose made to good sound engineering practice or of a proprietary type fixing. They must be adequately fixed and designed to carry the whole weight of the heater. In the event of suitable roof steelwork being unavailable, additional steelwork should be fitted to enable vertical hangers to be used for suspending the heaters. 4
E
Figure 1.b. Recommended Methods of Heater Suspension.
*
*
5
1.5 Herringbone Systems (VSOUH).
The manifold system should be arranged to fall slightly in the direction of the vacuum fan. This ensures that any condensation formed in the manifold on cold start and cool down is not trapped or allowed to drain back into the heater unit. This allows condensate to flow towards the condensate trap located at the vacuum fan
‘U’ trap shall be 457mm deep. The end cap of the collecting chamber to be fitted with a flush flanged tank connector. Any protrusion to be removed leaving the inside flush with end cap.
end of the manifold system. (See figure 2a below for condensate trap arrangement).
The manifold should be supported by chain, stainless steel flexible wire, or other flexible means from the roof structure to allow movement caused by thermal expansion. For
100mm diameter manifold the maximum distance between supports is 2.4m and 3.0m for 150mm diameter .
Figure 2b. Collecting Chamber Arrangement
Flexible couplers (supplied by AmbiRad) must be inserted within the manifold system to allow linear expansion to take place and prevent stress and strain on the system.
The end cap should be sealed with silicon jointing compound and pop riveted in position.
All condensate drains from the flue collecting chamber to the disposal point shall be corrosion-resistant material of not less than
The manifold must be supported either side of the flexible coupler.
22mm internal diameter. Copper or copper based alloy shall not be used for condensation drains. See reference BS 6896. Condensate
The exhaust flue should be adequately drain pipes must be protected against the supported from the building structure and effects of freezing. installed in accordance with the British
Standard Code of Practice BS 5440 Part 1 –
The Type ‘0’ and Type ‘2’ vacuum fans have
Installation and maintenance of flues and bottom horizontal discharge with rectangular ventilation for gas appliances of rated input not connections (flanged on the type 0) and must be exceeding 70kW net (1st, 2nd and 3rd family mounted in that position by means of the fan gases) support stool onto a suitable platform or brackets fixed to the building structure.
A condensate trap assembly must be provided at the end of the manifold system before the
For details of the fan outlet fixing holes see hot gas vacuum fan. below.
Figure 2c. Type ‘O’ Fan Outlet Dimensions
Figure 2a.
Condensate
Trap Arrangement
Figure 2d.
Type 2 Fan
Outlet Dimensions
The minimum depth of the condensate collecting chamber shall be 305mm and the minimum depth of the condensate drain pipe
6
For details of fan mounting bracket and fixing down holes see figure 3.
Figure 2e. Conventional Flue Arrangement
Roof Exit.
Figure 2g. Stainless Steel Telescopic
Through The Wall Arrangement (available for
Type ‘O’ and Type ‘2’ fans)
Where a conventional flue is to be installed,
AmbiRad supply an aluminium transformation piece to which a 150mm (6ins) diameter flue must be attached.
The length of flue which may be connected to the fan outlet must be adequately supported from the building structure.
Figure 2f. Conventional Flue Arrangement
Wall Exit.
Figure 2h. Typical Low Fan Arrangement
7
Figure 3. Vacuum Fan Mounting Details (Type ‘O’ fan illustrated)
Hole Centers
Fan
E
F
G
H
A
B
C
D
J
K
L
Power (watts)
Running Current (amps)
Starting Current (amps)
Voltage
Fig 2c/d
Type O
340
332
363
550
2.6
15.4
230V 1ph
209
153
42
239
124
38
175
7.1
8
Hole Centers
Type 2
210
205
215
120
0.8
4.0
230V 1ph
125
100
25
120
80
35
174
7
Figure 4. Typical Herringbone system (VSO shown with optional end covers)
Dos and don'ts of herringbone system
Dos
Check design pressure drop.
Don’ts
Run drains in copper or mild steel pipework. proposed building - e.g. cleaning, electroplating, printers using sugar powder etc.
AmbiRad if the system will operate correctly.
Drain all flue ducts and seal all joints. Install flue with vertical rise without firstly fitting a drain point at it’s lowest level.
Secure joints with pop rivets as well as sealing compound (refer to assembly instructions).
Fit fan with outlet vertical or with top horizontal discharge.
Fit drain traps before and after fans (see figs 2). Fit damper upside down or on it’s side. intermediate points on the herringbone system.
Run drains in galvanised steel or plastic pipes.
Follow guide to combined flue heating system.
9
1.6 Clearance to Combustibles.
The minimum clearances to combustible materials are given in the tables below. These minimum distances MUST be adhered to at all times.
Figure 5.a Diagram illustrating the clearance to combustibles (VSXO shown c/w End Covers)
B
A
F
D
C
E
DIM 'C'
DIM 'C'
VSXO
Above Canopy
Above Burner / Flued Heat Exchanger
Above Burner / Heater Outlet Unflued
To the Sides
Below Tubes
From Heater Outlet (UNFLUED)
End Wall
A
B
B1
C
D
E
F
10
20/25 30/35/40 45/50
100 100 100
500 500 500
700 700 700
915 1200 1525
2330 2330 2330
570 940 940
390 470 575
Figure 5.b Clearance to combustibles Vision Optima Unitary VSO UT
F A
D
C
B
DIM 'C'
DIM 'C'
VSO UT
Above Canopy
Above Burner / Flued Heat Exchanger
Above Burner / Heater Outlet Unflued
To the Sides
Below Tubes
From Heater Outlet (UNFLUED)
End Wall
A
B
B1
C
D
E
F
15/20/25 30/35/40 45/50
100 100 100
500 500 500
700 700 700
915 1200 1525
2330 2330 2330
570 940 940
390 470 575
11
Figure 5.c Clearance to combustibles Vision Optima Herringbone VSO UH
F A
D
C
B
DIM 'C'
DIM 'C'
VSO UH Herringbone
Above Canopy
Above Burner / Flued Heat Exchanger
Above Burner / Heater Outlet Unflued
To the Sides
Below Tubes
From Heater Outlet (UNFLUED)
End Wall
A
B
B1
C
D
E
F
15/20/25 30/35/40 45/50
100 100 100
500 500 500
700 700 700
915 1200 1525
2330 2330 2330
570 940 940
390 470 575
12
1.7 Gas Connection and Supply
to the heater not to apply excessive turning force to the internal controls.
Before installation, check that the local distribution conditions, nature of gas appliance are compatible.
A flexible hose is installed to allow safe linear and pressure, and adjustment of the expansion of the heater without creating undue stress on the gas supply pipe work. It is therefore important that a tested and certified
A competent or qualified engineer is required to hose assembly made to ISO 10380, supplied either install a new gas meter to the service accordance with BS 6896, so that the supply with ½” BSP female cone seat adapters, is pipe or to check that the existing meter is adequate to deal with the rate of gas supply required. Installation pipes should be fitted in installed as per these instructions.
It is also important to ensure that expansion is taken up in the body of the flexible hose, and pressure, as stated in Table 4 will be achieved. not on its attachment to the pipe work. The cone
It is the responsibility of the competent engineer seat adapter supplied on one end of the flexible to ensure that other relevant Standards and gas hose provides a `swivel` action, and must
Codes of Practice are complied with in the be fitted on the burner using a ½” BSP barrel country of installation. Pipes of smaller size nipple to provide ease of disconnection for than the heater inlet gas connection must not future servicing. This assumes that the heater be used. The complete installation must be and fixed gas supply to the isolating valve have tested for soundness as described in the been installed. country of installation.
The installation layout described below is
The gas union service cock MUST be fitted in the gas supply close to the heater, but not onto the burner itself.
Take care when making a gas connection the only method recommended by the institute of gas engineers, the hose manufacturer, and AmbiRad and must only be carried out by a qualified/competent gas engineer.
Figure 6. Correct Installation of Flexible Gas Connection fig.a fig.b x
50 +/- 20mm fig.c x fig.d
300 +/- 50mm fig.e
Arrow denotes direction of expansion. fig.f
The methods shown in fig.e and fig.f are unacceptable, due to undue stress on the hose & fittings.
13
Depending on the specific installation, the flexible gas hose may be routed to the gas cock at any of the following angles in relation to the burner:
Vertical (fig.a)
45° angle (fig.b)
90° angle (fig.c)
Any other position in between these angles is acceptable.
A clearance distance ‘x’ of min 200mm must be observed to allow side door access .
Care must be taken to observe the minimum pipe bend diameter (minimum 250mm, maximum 350mm) & pipe expansion distance
(minimum 30mm, maximum 70mm) as shown in fig.d.
Maximum bend diameter for the 1000mm hose is 450mm.
The correct installation as shown will allow for approx 100mm of movement due to expansion.
Table 4 Gas Supply Pressures
Gas Category
Gas Type
Max Supply Pressure (mbar)
Min Supply Pressure (mbar)
Nominal Pressure (mbar)
Gas Supply
I2H
Natural Gas (G20)
25
17
I3P
Propane (G31)
45
25
20 37
Connection R½ ½in BSP Internal Thread
This appliance must be earthed.
Supply 230V 50Hz single phase.
Standard heater 116W.
Current rating 0.55 amp max (inductive).
Fuse: external 3 amp.
All electrical work should be carried out to IEE standards by a competent electrician. The electrical connection to the heater is made by means of a three pin plug-in power connector.
Live, neutral and earth connections should be made via a flexible supply cable to the power connector and routed clear of the heater or tubes.
The flexible supply cables should be of 0.5mm² and comply with BS 6500. The wires in the mains lead are coloured in accordance with the following code:
Green & Yellow Earth;
Blue Neutral;
Brown Live
14
It is recommended the heater or group of heaters are controlled by thermostats, a time switch and if required manual control switches and a frost thermostat.
We recommend use of AmbiRad approved
controls. Please refer to control manual for siting and installation details.
Where alternative manufactures controls are used, please refer to their instructions for their siting and installation details.
Figure 7.a Single Phase Wiring
Figure 7.b Typical VSOUT Induced Unitary Wiring Connections (end covers not shown)
Fused Spur
Fan plugs into burner
Figure 7.c Typical VSOUH Herringbone Wiring Connections (end covers not shown)
Fused Spur
Figure 7.d Typical VSXO Powered Burner Unitary Wiring Connections (end covers not shown)
Fused Spur
Fan plugs into burner
Figure 7.e Typical VSXO Powered burner Wiring Connections (end covers shown)
Fused
Spur
Fan plugs into burner
Figure 10. Internal Burner Wiring Diagram.
15
Figure 8. Internal Burner Wiring Diagram.
GREY
C.
N.O.
VACUUM
SWITCH
N.C.
SOLENOID VALVE
VALVE
J.S.T.
1 2 3
GRN/YLW
BLUE
BLUE
N
L
FAN
GREEN/YELLOW
EMC FILTER
MAINS INPUT
L N
BURNER
ON
MAINS
ON
LAMPS
BLUE
BROWN
BROWN
WHITE
MAIN J.S.T.
9
1 2 3 4
7 8
10 11 12
PINK
YELLOW
GREY
16
Figure 9. Typical VSO UH
Schematic Wiring
Connections
1 phase 230V
Exhaust Fan
Isolator
Tail Pipe
Isolator
Isolator
0.75mm²
Screened Cable
Sensor
Zone A
Isolator
Isolator
Controller
230V 50Hz 13A
Mains Supply
1.9 Ventilation Requirements
AmbiRad tube heaters can be operated as flued or unflued appliances in accordance with
Natural Ventilation
BS EN 13410 should be used to size air vents to provide adequate ventilation, an example of this calculation is given below: the relevant national requirements in the country of installation.
1.9.1 Unflued Radiant Heater
Radiant tube heaters can be operated as unflued appliances so that the concentration of
Carbon Dioxide (CO
2
) at positions where the air will be inhaled does not exceed 0.28%. BS EN
13410 is a guide to achieving this requirement.
If the building air change rate exceeds 1.5 per
Site Details:
20°c Internal Operating Temperature
0°c Outside Air Temperature
5m between high and low level vents
Following the sizing procedure in BS EN 13410 gives an air exit velocity of 1.6m/s. This equates to a free area vent at both high level and low level of 17.36cm²/kW free area.
1.9.2 Flued Radiant Heater hour or if the heat input is less than 5W/m³, no additional ventilation is required.
In addition to the ventilation requirements,
In buildings having an air change rate of less than 0.5 per hour, additional mechanical or natural ventilation is required. For detailed possibility of condensation forming on cold surfaces.
It should be noted that the clearance distance around the burner increases when the unit is operated unflued (see section 1.6). It should be ensured that the combustion gases do not impinge on any combustible materials.
Mechanical Ventilation
Mechanical ventilation must be rated at minimum 10m³/h per kW input using appropriately sized fans and interlocked with heaters.
5.2.2.2.1
Mechanical Ventilation
Mechanical ventilation must be installed to meet a minimum of 0.5 air changes per hour using appropriately sized fans and interlocked with the heaters.
Natural Ventilation
Low level ventilation openings with a free area of at least 2cm²/kW shall be provided. See section 5.2.2.2.2.1.
17
1.10 Flue and Combustion Air Inlet -
Options
Dependent on the type of burner fitted to your heater it is possible to have configurations of flue and combustion air inlet options to those shown overleaf:
• Option 1
For induced burner with / without flue and / or optional ducted air inlet refer to Figure 10.a
• Option 2
For herringbone heaters refer to Figure 10.b
& section 1.5 Herringbone Systems (UH/LH).
• Option 3
For forced burner with / without flue and ducted air inlet refer to 10.c
• Option 4
For ducted air and products of combustion to ventilated area please refer to Figure 10.c. &
10.d.
• Option 5
For flued products of combustion and ducted air via concentric pipe please refer to Figure
10.e.
1.10.1 Important Information
Flue systems can run either vertically or horizontally up to a maximum length of 9.0m
(including up to 2 x 90° bends plus the terminal).
The minimum flue length shall be 1m.
The flue system may be terminated vertically
or horizontally but in accordance with the
British Standard Code of Practice BS 5440: Part
1 - Installation and maintenance of flues and ventilation for gas appliances of rated input not exceeding 70kW net (1st, 2nd and 3rd family gases), and the flue system manufacturers instructions as supplied with the flue.
1.10.1.3 Option 5
A suitable flue system complying with EN1865-1
(type T200 P1 W V2 L50050 O00) should be used.
Flue size 100mm diameter single wall.
The maximum flue length shall be 9.0m
(including up to 2 x 90° bends plus the terminal).
The minimum flue length shall be 1m.
The flue system must be terminated vertically
only and in accordance with the British
Standard Code of Practice BS 5440: Part 1 -
Installation and maintenance of flues and ventilation for gas appliances of rated input not exceeding 70kW net (1st, 2nd and 3rd family gases), and the flue system manufacturers instructions as supplied with the flue.
1.10.1.1 Option 1 and 3
A suitable flue system complying with EN1856-1
(type T250 N1 D Vm L11040 O50) should be used.
Flue size 125mm diameter twin wall.
Flue systems can run either vertically or horizontally up to a maximum length of 9.5m
(including up to 2 x 90° bends plus the terminal).
Connection to an appliance which is not
The minimum flue length shall be 1m. connected to the fuel supply may be carried out by a competent person. However, connection to
The flue system must be terminated in a an appliance that is connected to the fuel supply
vertical position and in accordance with the
must be carried out by a registered installer.
British Standard Code of Practice BS 5440: Part
1 - Installation and maintenance of flues and
If the flue passes through a wall, ceiling, or roof ventilation for gas appliances of rated input not made from combustible material then it has to exceeding 70kW net (1st, 2nd and 3rd family be sleeved so as to provide a minimum of a gases), and the flue system manufacturers
50mm void between the exterior of the flue and instructions as supplied with the flue. the internal wall of the sleeve. A minimum of
50mm must be maintained as a clearance
1.10.1.2 Option 2 distance to all other combustible materials.
The tailpipe as supplied by the manufacturer is to be used and installed as per the manufacturers design drawing. stainless steel flexible wire, or other flexible
A suitable flue system complying with EN1856-1 means from the roof structure to allow
(type T250 N1 D Vm L11040 O50) may be used movement caused by thermal expansion. as an alternative to that offered by the manufacturer.
18
The maximum distance between supports is
1.5m for horizontal runs.
Wall bands are not load bearing and give lateral support only. If used, wall bands should be fitted every 3m on vertical runs to ensure the system is rigidly held. The system should be braced immediately below passing through the roof line to ensure the flashing does not suffer lateral pressures.
The maximum height unsupported above the with the visible male collar pointing upwards, this is reaffirmed by the directional arrow pointing upwards, indicating the directional flow of flue gases. Taping of the joints is unnecessary.
1.10.4.2 Option 2 Tailpipe
After allowing for a minimum of 75mm (3in) of penetration of the fitting into the tube, cut the tubes to the lengths required and remove all burrs and wipe off any grease or oil with a clean roof line is 1.5m. Where a joint is above the roofline it should be determined that in extreme rag. wind conditions this joint would not be over The components are joined by pushing the male exerted. If there is any doubt then a guy wire spigot and female socket together until the stop should be used. Beyond this guy wires should be installed every meter.
The POCED is capable of withstanding its own is reached.
To seal use an applicator gun and apply a 4mm diameter bead of high temperature silicon weight when installed in accordance with these instructions and the Regulations shown below. jointing compound externally round the end of the male spigot and internally round the end of the female socket.
The exhaust flue should be adequately supported from the building structure and Push the male spigot into the female socket
Standard Code of Practice BS 5440: Part 1 –
Installation and maintenance of flues and jointing compound uniformly until a penetration of 75mm (3in) is achieved. ventilation for gas appliances of rated input not exceeding 70kW net (1st, 2nd and 3rd family Note The silicon jointing compound remains gases), and the flue system manufacturers instructions as supplied with the flue. See reference BS 6896. Condensate drain pipes workable after application for only 5 minutes
Secure the joint by drilling through the tube and must be protected against the effects of fitting and fix with three pop rivets at 12 o’clock, freezing. 4 o’clock and 8 o’clock positions. 4.8mm
(3/16in) diameter pop rivets are recommended.
1.10.3 Condensation
1.10.4.3 Option 5
When designing the flue system the prevention
The components are joined by pushing the male of the formation and entrapment of condensation must be a key consideration. is reached. No sealant is required, but can be applied if the formation of condensation is anticipated.
Horizontal flue should be fitted ensuring a slight gradient approx 5
° towards the terminal. Where condensation is unavoidable traps should be
To seal use an applicator gun and apply a 4mm included to encourage the condensates to flow diameter bead of high temperature silicon freely to a point from which they may be jointing compound externally round the end of released, preferably into a gully. The condensate pipe from the flue to the disposal the female socket. point must be made from corrosion resistant pipe of not less than 25mm internal diameter.
Push the male spigot into the female socket using a slight rotating movement to spread the jointing compound uniformly until both fittings
1.10.4 Method of Jointing Tube
have fully engaged.
1.10.4.1 Option 1 and 3
Note The silicon jointing compound remains components are joined together by a twist lock, bayonet system. The system should be installed
19
Option 1 - Figure 10a. Air Inlet Attachments Unitary Herringbone Burners (VSO)
B and rotate fan outlet to the HORIZONTAL
B and rotate fan outlet to the HORIZONTAL
position away from the burner.
Ducted Air Intake
Products of Combustion
D
E
A
B
C
Firing tube
Products of combustion
A 127mm (5ins) Twin Wall Flue System
Ventilation requirements are as detailed in section 1.9 or 7176-SUB (2506 fan)
Ducted air must be used in locations where there is airborne dust or where
D Optional Ducted Air Intake. VSI-DA
E Standard Air Intake (supplied as standard) there is a polluted atmosphere e.g.
Chlorinated Vapours.
Maximum length = 9m
Minimum diameter = 100mm
Maximum no of bends = 2
Maximum flue run = 9.5m @ Ø125mm
Maximum no of bends = 2
All flues must terminate vertically.
For further information on flue runs, please refer to section 1.10.1 and BS 5440 pt.1
20
Option 2 - Figure 10b. Air Inlet Attachments Induced Herringbone Burners (VSO)
Ducted Air Intake
C
B
A D
Firing tube
Products of Combustion
Ventilation requirements are as detailed in section 1.9
Ducted air must be used in locations where there is airborne dust or where there is a polluted atmosphere e.g. Chlorinated
Vapours.
Maximum length = 9m
Minimum diameter = 100mm
Maximum no of bends = 2
21
B Air Intake (supplied as standard)
C Optional Ducted Air Intake. (see notes)
Option 3 - Figure 10c. Forced Burner with Heat Exchanger (VSXO Standard Flue)
For flued products of combustion and no ducted air
Products of combustion
J
E
G
Air
Inlet
G
H
G
L
K
Firing
tube
Products of combustion
F
Maximum flue length = 9.5m @ Ø125mm
Maximum no of bends = 2
All flues must terminate vertically.
For further information on flue runs, please refer to section 1.10.1 and BS 5440 pt.1
Ducted air must be used in locations where there is airborne dust or where there is a polluted atmosphere e.g. Chlorinated
Vapours.
Maximum length = 9m
Minimum diameter = 100mm
Maximum no of bends = 2
22
G 100mm (4ins) Clips x2
H 100mm (4ins) Flexible Flue
J 100mm (4ins) Flexible Flue to Fan
K 127mm (5ins) to 100mm (4ins) Reducer
L 127mm (5ins) Twin Wall Flue Pipe
Ventilation requirements are as detailed in section 1.9
Option 4 - Figure 10d. Forced Burner with Heat Exchanger (VSXO No External Flue)
For ducted air and products of combustion to ventilated area
J
G
Fresh
Air
M
Products of combustion to
ventilated area
E
G
H
G
Firing
tube
F
Products of
combustion
Ventilation requirements are as detailed in section 1.9
Ducted air must be used in locations where there is airborne dust or where there is a polluted atmosphere e.g. Chlorinated
Vapours.
Maximum length = 9m
Minimum diameter = 100mm
Maximum no of bends = 2
G 100mm (4ins) Clips x2
H 100mm (4ins) Flexible Flue
J 100mm (4ins) Flexible Flue to Fan
M Shroud for unflued heater installation
(supplied as standard)
23
Option 5 - Figure 10e. Forced Burner with Heat Exchanger (with Concentric Flue)
For flued products of combustion and ducted air via concentric pipe.
Products of
combustion
IMPORTANT NOTE
This option is a type B
23
flue system with ducted air and is not a room sealed balanced flue product.
Fresh
Air
Inlet
E
G
J
G
P
Fresh
Air
Firing
Tube
Products of
combustion
G 100mm (4ins) Clips x2
H 100mm (4ins) Flexible Flue
J 100mm (4ins) Flexible Flue to Fan
N Flue Extension optional
(0.25m/0.5m/1.0m)
P Concentric Flue Terminal
Products of
combustion
N
H
G
F
Ventilation requirements are as detailed in section 1.9
Maximum flue length = 9.0m @ Ø125mm
Maximum no of bends = 2
All flues must terminate vertically.
For further information on flue runs, please refer to section 1.10.1 and BS 5440 pt.1
24
Ducted air must be used in locations where there is airborne dust or where there is a polluted atmosphere e.g. Chlorinated
Vapours.
Maximum length = 9m
Minimum diameter = 100mm
Maximum no of bends = 2
1.11 Technical Details.
No of Injectors
Gas Connection
Flue Nominal Bore mm (in)
Unitary Fan Motor Details
1
½ in BSP Internal thread
125 (5)
230 volt 1 phase 50Hz
Table 5. Burner Settings - Natural Gas (G20)
Heater
Model
VSXO20UT
VSXO25UT
VSXO30UT
VSXO35UT
VSXO40UT
VSXO45UT
VSXO50UT
Heat Input kW
Gross Nett
Gas
Flowrate
(m³/hr)
Injector
Pressure
(mbar)
Injector
Size
(mm)
20.0 18.0 1.9
*Size
(h x l x w)
9.2 7 x 1.7 445x4120x826
*Weight
(Kg)
Fan
Rating
(A)
Fan
Type
104 1.0 2507
25.0 22.5 2.4 10.0 7 x 1.9 445x4120x826 104 1.0 2507
32.0 28.8 3.1 11.5 7 x 2.1 445x5955x826
36.0 32.4 3.5 11.5 7 x 2.3 445x5955x826
40.0 36.0 3.8 11.0 7 x 2.7 445x5955x826
44.0 39.6 4.2 11.6 7 x 2.9 445x7760x826
48.0 43.2 4.6 12.8 7 x 2.5L 445x7760x826
142
142
142
182
182
1.0 2507
0.5 2560
0.5 2560
0.5 2560
0.5 2560
VSO15UT
VSO20UT
VSO25UT
VSO30UT
VSO35UT
VSO40UT
VSO45UT
VSO50UT
15.0 13.5 1.4 10.2 7 x 1.3 298x4049x826
20.0 18.0 1.9 11.0 7 x 1.5 298x4049x826
25.0 22.5 2.4
32.0 28.8 3.1
36.0 32.4 3.5
40.0 36.0 3.8
44.0 39.6 4.2
48.0 43.2 4.6
9.2 7 x 1.8
10.8
8.0
7 x 2.0
9.0 7 x 2.3
7 x 2.7
8.9 7 x 2.9
9.1 7 x 2.5L
298x4049x826
298x5884x826
298x5884x826
298x5884x826
298x7689x826
298x7689x826
97
97
97
135
135
135
175
175
0.5 2501
0.5 2501
0.5 2501
1.0 2507
0.5 2560
0.5 2560
0.5 2560
0.5 2560
Heater
Model
VSO15UH
VSO20UH
VSO25UH
VSO30UH
VSO35UH
VSO40UH
VSO45UH
VSO50UH
Heat Input kW
Gross Nett
Gas
Flowrate
(m³/hr)
15.0 13.5
Injector
Pressure
(mbar)
Injector
Size
(mm)
*Size
(h x l x w)
*Weight
1.4 1.3 298x4049x826
(Kg)
97
11.0 7 x 1.5 298x4049x826 20.0 18.0
25.0 22.5
1.9
2.4
97
97
32.0 28.8
36.0 32.4
40.0
48.0
36.0
44.0 39.6
43.2
3.1
3.5
3.8
4.2
4.6
10.8
9.0 7
8.0
7 x 2.0
7 x 2.7
298x5884x826
298x5884x826
135
135
135
8.9 7 175
9.1 7 x 2.5L 298x7689x826 175
Note* For Optima heaters fitted with decorative end mouldings, Length increases by a further 1056mm, weight increases by 6Kg
25
Heater
Model
VSO15UH
VSO20UH
VSO25UH
VSO30UH
VSO35UH
VSO40UH
VSO45UH
VSO50UH
Table 6. Induced VSO Herringbone Settings - Natural Gas (G20)
Cold HB Pressure Hot HB Pressure mm H
2
O mbar mm
14.3 1.4 10.2 1.0
18.4 1.8 10.2 1.0
25.5 2.5 17.3 1.7
14.3 1.4 10.2 1.0
22.4 2.2 16.3 1.6
20.4 2.0 17.3 1.7
33.6 3.2 22.4 2.2
33.6 3.2 22.4 2.2
Table 7. Flue details - Natural Gas (G20)
Heater
Model
VSXO20UT
VSXO25UT
VSXO30UT
VSXO35UT
VSXO40UT
VSXO45UT
VSXO50UT
VSO15UT
VSO20UT
VSO25UT
VSO30UT
VSO35UT
VSO40UT
VSO45UT
VSO50UT
Mass Flow Rate of Flue
Gasses (kg/s)
Flue Pressure (Pa)
Max Flue Resistance
Flue Gas Temp (°C)
0.0130
0.0139
0.0165
19
13
33
185
205
180
0.0167
0.0183
7.5
35
185
220
0.0210 31 185
0.0224
0.0114
10
6
195
165
0.0125
0.0137
0.0189
19
28
29
190
225
205
0.0207
0.0253
24
28
235
240
0.0253 26 210
0.0257 27 220
26
Heater
Model
VSO15UT
VSO20UT
VSO25UT
VSO30UT
VSO35UT
VSO40UT
VSO45UT
VSO50UT
Tables 8. Burner Settings - Propane Gas (G31)
Heat Input kW
Gross Nett
Flowrate
(l/hr)
Injector
Pressure
(mbar)
Injector
Size
(mm)
15.0 13.9 2.18
*Size
(h x l x w)
13.5 7 x 1.0 298x4049x826
*Weight
(Kg)
97
Fan
Rating
(A)
0.5
Fan
Type
2501
20.0 18.5 2.88 12.4 7 x 1.2 298x4049x826
25.0 23.1 3.60 13.3 7 x 1.3 298x4049x826
32.0 29.6 4.60 22.5 7 x 1.3 298x5884x826
36.0 33.3 5.12 22.4 7 x 1.4 298x5884x826
40.0 37.0 5.68 18.4 7 x 1.5 298x5884x826
44.0 40.7 6.25 14.9 7 x 1.7 298x7689x826
48.0 44.4 6.82 14.3 7 x 1.8 298x7689x826
97
97
135
135
135
175
175
1.0
1.0
0.5
0.5
0.5
0.5
2507
2507
2560
2560
2560
2560
0.5 202126
Heater
Model
VSO15UH
VSO20UH
VSO25UH
VSO30UH
VSO35UH
VSO40UH
VSO45UH
VSO50UH
Heat Input kW
Gross Nett
15.0 13.9
20.0
25.0
32.0
18.5
23.1
29.6
36.0
40.0
44.0
48.0
33.3
37.0
40.7
44.4
Flowrate
(l/hr)
2.18
Injector
Pressure
(mbar)
13.5
Injector
Size
(mm)
7 x 1.0
2.88
3.60
4.60
12.4
13.3
22.5
7 x 1.2
7 x 1.3
7 x 1.3
5.12
5.68
6.25
6.82
22.4
18.4
14.9
14.3
7 x 1.4
7 x 1.5
7 x 1.7
7 x 1.8
*Size
(h x l x w)
298x4049x826
298x4049x826
298x4049x826
298x5884x826
298x5884x826
298x5884x826
298x7689x826
298x7689x826
* Weight
Note* For Optima heaters fitted with decorative end mouldings, Length increases by a further 1056mm, weight increases by 6Kg
(Kg)
97
97
97
135
135
135
175
175
Model
VSO15UH
VSO20UH
VSO25UH
VSO30UH
VSO35UH
VSO40UH
VSO45UH
VSO50UH
Table 9. Induced VSO Herringbone Settings - Propane Gas (G31)
Cold HB Pressure Hot HB Pressure mm H
2
O mbar mm
19.4 1.9 15.3 1.5
22.4 2.2 17.3 1.7
24.5 2.4 17.3 1.7
27.5 2.7 19.4 1.9
31.6 3.1 20.4 2.0
38.7 3.8 23.5 2.3
36.7 3.6 23.5 2.3
36.7 3.6 28.6 2.8
27
Table 10. Flue details - Propane Gas (G31)
Heater Model
VSO15UT
VSO20UT
VSO25UT
VSO30UT
VSO35UT
VSO40UT
VSO45UT
VSO50UT
Mass Flow Rate of Flue
Gasses (kg/s)
0.0152
0.0200
0.0196
0.0201
0.0238
0.0255
0.0210
0.0334
Flue Pressure (Pa)
Maximum Flue
Resistance
12.5
24.9
15.0
16.2
27.4
29.9
31.4
43.6
Flue Gas Temp (°C)
240
247
233
228
182
214
232
210
28
PLEASE READ this section prior to assembly to familiarise yourself with the components and tools you require at the various stages of assembly. Carefully open the packaging and check the contents against the
Please ensure that all packaging is disposed of in a safe environmentally friendly way.
For your own safety we recommend the parts and check list.
The manufacturer reserves the right to alter specifications without prior notice. use use of safety boots and leather faced gloves when handling sharp or heavy items. The of protective recommended. eye wear is also
The following tools and equipment are advisable to complete the tasks laid out in this manual.
Trestles Leather
Faced
Gloves
Wrench With
Extension
Saw
13mm
Socket
Pop
Riveter
& 3/16”
Rivets
Suitable alternative tools may be used.
Pozidrive
Screwdriver
Tape
Measure
Silicone
Sealant
& Gun
Herringbone
Systems Only
10mm,
12mm &
13mm
Spanners
4 & 5mm
Allen
Keys
2.2 Assembly Notes (refer fig’s 11-17)
2.2.1 Tubes
Identify and position tubes (A) on trestles.
Position the tubes so that the tube seams are facing inwards.
Mark out the position of the bracket centres from the dimensions shown on the assembly drawings.
U bend end
Return tube
Firing Tube
Burner end
Note:
Four module heaters (45kW & 50kW) are assembled in two sections.
Note:
First section of burner tube on
PROPANE four module heaters
(45kW & 50kW) is stainless steel.
2.2.2 Brackets
Slide the bracket assemblies (B) along to the tubes to the dimensional positions and in their correct order as detailed in the assembly drawings. We recommend brackets are fixed to tubes prior to hanging.
When fixing the bracket to the tubes it should be noted that the ‘U’ bolts on the first bracket CLOSEST TO THE BURNER* and last bracket CLOSEST TO ’U’ BEND should be tightened to achieve a minimum torque setting of 15Nm².
* not on the firing tube on 2 module versions
29
All remaining ‘U’ bolts on the RETURN
TUBE should also be tightened to achieve a minimum torque setting of 15Nm².
2.2.4 Couplers
For fixing the U bend. Locate and position tube couplers (D) Slide the coupler over the
All remaining ‘U’ bolts on the FIRING components ensuring that the rivet stop has
TUBE and the first ‘U’ bolt on the butted up to the tube end and the pre-fitted bolts
FIRING TUBE on 2 module variants, should be engage in the pre-cut holes so that the socket left loose and locked in place with a locknut to heads are FACING INWARDS. achieve a 3mm clearance above the tube to allow for thermal expansion (see sketch below).
Locknut
Return Tube Burner Firing Tube
Moving between the two set pins, tighten both ensuring that equal pressure is applied to each set pin in turn.
2.2.5 Coupler Bellows
2.2.3 Turbulators
There are various lengths of turbulators
(G) for the vision range. Identify correct lengths prior to assembly. We recommend turbulators are inserted into tubes prior to hanging.
For adjoining tubes on 3 and 4 module heaters, locate and position the coupler (Q) onto the ends of the tubes after firstly positioning a clamp on both ends. Slide each clamp onto the bellow ends.
Insert short 976mm turbulator into burner firing tube from U BEND END.
Moving between the two set pins, tighten both ensuring that equal pressure is applied to each set pin in turn.
There is one bellow located on the firing
For models 15, 20 and 25: Insert 3400mm tube on models 30, 35 & 40: turbulator into return tube from U BEND END.
There are two bellows located on each
For models 30, 35 and 40: Insert one 2600mm tube on models 45 and 50: turbulator into return tube from U BEND END
Due to the length of models 45 and 50, and one 2600mm turbulator into return tube the coupler bellows are assembled onto from OPPOSITE END. the tube ends ONCE the two halves of the turbulator into return tube from U BEND END heater have been fully assembled and
For models 45 and 50: Insert one 3040mm hung in position see “Final Fixings” section 2.2.7.2.3
and one 3400mm* turbulator into return tube from OPPOSITE END. *Nat gas only
View from U tube end
30
Fig. 11 Tube, Brackets and Turbulator detail
31
2.2.6 U Bend.
Slide U bend (C) into the open end of the couplers ensuring the pre-fitted bolts engage in the precut holes. Tighten all four clamping bolts to provide a tight grip between tubes & U bend.
To avoid damaging the heater whilst installing we recommend the heater chassis be suspended prior to fitting reflectors.
2.2.7.1 Overshield Reflectors
2.2.7 Reflectors
There are three reflector section types used in the construction on the Vision Optima heater.
Remove the protective plastic coating.
1. Overshield reflector (J): located on the underside of the inner reflector positioned
Overshields MUST be fitted prior to the assembly of the reflectors. above and in parallel to the radiant tubes.
The two ends of the overshields are different to allow for thermal expansion
Overshields (J1) are fitted to the underside of, and should be fixed in the correct order as and run in parallel to, the inner reflectors. detailed in the assembly drawings.
One end of the overshield has two holes for direct fixing to the reflector, the other end has two larger slots which along with an expansion fixing plate allows for thermal expansion.
2. Inner Reflector (H): aluminised steel reflectors located over the radiant tubes to emit the heat downwards.
3. Outer Canopy (L): pre-coated decorative reflector positioned to the outside of the reflector. The outer canopies come in two halves for ease of assembly and are held together by closing plates (N).
The overshields are supplied in two lengths and MUST be arranged, in the correct directions and on the specific reflector order as indicated in the detailed drawings.
1. Locate and position correct overshield and offer to the underside of the reflector so that the location holes are in line.
2. Using bolts, nuts and washers provided, fasten through the overshield, reflector and cross member (J2) which runs across the top.
3. The larger holes located at the other end of the overshield should line up with the holes in the reflector. This end is allowed to ‘float’ with thermal expansion and as such, an expansion plate (J3) is added and placed to the underside of the overshield.
4. Using bolts, nuts and washers provided, fasten through the expansion plate, overshield, reflector and cross member which runs across the top.
5. Continue for other reflectors.
32
Fig. 12 Overshield detail
33
2.2.7.2 Inner Reflectors
All reflectors must be positioned/ attached to the brackets exactly as detailed in the assembly drawings.
Remove the protective plastic coating.
2.2.7.2.1 Two Module units
1. Place inner reflectors (H) on the heater by sliding the reflectors between the tubes and the brackets.
2. Locate the FIRST slot on reflector over the
M8 bolt on the first bracket. Secure using large washers and anti vibration nuts.
3. The slot in other end of the first reflector should align with M8 bolt on the second bracket.
4. Locate the second reflector onto the same bolt using the SECOND slot in from the end and
OVERLAP the first reflector. This should create a 114mm overlap. Secure using large washers and anti vibration nuts.
Ensure the 2nd reflector sits on top of the 1st.
4. Locate the M8 bolts on last bracket to slot in second reflector approx one third distance from reflector end. Secure using large washers and anti vibration nuts.
5. Slight re-adjustment of brackets may be necessary for reflector alignment. Ensure U bolts are tightened correctly as described in section 2.2.3.
2.2.7.2.2 Three Module Units
1. Place inner reflectors (H) on the heater by sliding the reflectors between the tubes and the brackets.
2. Locate the FIRST slot on reflector over the
M8 bolt on the first bracket. Secure using large washers and anti vibration nuts.
3. The slot in other end of the first reflector should align with M8 bolt on the second bracket.
4. Locate the second reflector onto the same bolt using the FIRST slot in from the end and
OVERLAP the first reflector. This should create a 77mm overlap. Secure using large washers and anti vibration nuts.
5. The slot in other end of the second reflector should align with M8 bolt on the third bracket.
6. Locate the third reflector onto the same bolt using the FIRST slot in from the end and
OVERLAP the second reflector. This should create a 67mm overlap. Secure using large washers and anti vibration nuts.
Ensure the 3rd reflector sits on top of the 2nd reflector and the 2nd reflector on top of the 1st
7. Locate the M8 bolts on last bracket to slot in third reflector approx one third distance from reflector end. Secure using large washers and anti vibration nuts.
8. Slight re-adjustment of brackets may be necessary for reflector alignment. Ensure ‘U’ bolts are tightened correctly as described in section 2.2.3.
2.2.7.2.3
Four Module Units.
Models 45 and 50 are assembled in two halves.
Working on the half closest to the Burner:
1. Place the first two inner reflectors (H) on the heater by sliding the reflectors between the tubes and the brackets.
2. Locate the FIRST slot on reflector over the
M8 bolt on the first bracket on this half. Secure using large washers and anti vibration nuts.
3. The slot in other end of the first reflector should align with M8 bolts on the second bracket on this half.
4. Locate the second reflector onto the same bolt using the FIRST slot in from the end and
OVERLAP the first reflector. This should create a 77mm overlap. Secure using large washers and anti vibration nuts.
34
Ensure the 2nd reflector sits on top of the 1st.
5. Locate the M8 bolts on third bracket on this half to slot in same reflector approx one third distance from reflector end. Secure using large washers and anti vibration nuts.
Now working on the second half:
6. Place the remaining inner reflectors (H) on the heater by sliding the reflectors between the tubes and the brackets.
2.2.8 Insulation mats.
Using the recommended safety equipment i.e. gloves, goggles and a face mask, cover the back of reflectors with the insulation mats. Tuck in the edge of the mat behind the lip of the reflector.
The insulation mats come in two sections for the four module variants.
Note: Third reflector ONLY is turned through 180° to all other reflectors.
7. Locate the fourth reflector onto the M8 bolts of the first bracket on this half using the slot approx one third distance in from the end of the reflector. Secure using large washers and anti vibration nuts.
8. The last slot in other end of this reflector should align with M8 bolts on the second bracket on this half.
9. Locate the fourth reflector onto the same bolts using the FIRST slot in from the end and
OVERLAP the third reflector. This should create a 84mm overlap. Secure using large washers and anti vibration nuts
Ensure the 4th reflector sits on top of the 3rd.
10. Locate the M8 bolts on last bracket to slot in fourth reflector approx one third distance from reflector end. Secure using large washers and anti vibration nuts.
11. Slight re-adjustment of brackets may be necessary for reflector alignment. Ensure ‘U’ bolts are tightened correctly as described in section 2.2.3.
Final fixings for four module units.
12. At this stage, with the bellow couplers already affixed to one half, align and offer other side of bellow couplers to adjoining tubes, carefully overlapping the second reflector to the third to create a 50mm overlap. Secure using bolts, large washers and anti vibration nuts.
13. Tighten bellow couplers as stated in section
2.2.5
14. With the assembly correctly fitted, a gap of
1120mm between brackets 3 and 4 should be apparent.
35
Fig. 13 Reflector detail
36
2.2.9 Outer Canopy's
other and insert M8 self tapping screws provided.
6. Repeat the procedure for 3rd set of outer canopies.
Remove the protective plastic coating.
2.2.9.3 Four Module Units
1. Slide on the two halves to cover the centre section of the heaters and fit closing plates to each end (P).
2. Slide on two more outer canopies.
3. Stop short of the canopies already fitted and
The outer canopies are made up of identical half fit closing plates (P). following method; covers (L) which engage into the side of the
4. Insert the ends of the second set of canopies inner reflectors and join at the centre by way of a closing plate which holds the two halves together. Install the outer canopies using the inside the first set at the central joint.
5. A slot is located 15mm from the end of each canopy. Align each slot i.e. one on top of each
2.2.8.1 Two Module Units other and insert M8 self tapping screws provided.
1. Slide on the two halves to cover the 1st sec-
6. Repeat the procedure for 3rd and 4th set of tion of the heaters and fit closing plates to each end to the second set of canopies. outer canopies.
2. Slide on two more outer canopies.
3. Stop short of the canopies already fitted and fit closing plates (N).
4. Insert the ends of the second set of canopies inside the first set at the central joint.
5. A slot is located 15mm from the end of each canopy. Align each slot i.e. one on top of each other and insert M8 self tapping screws provided.
2.2.8.2 Three Module Units
1. Slide on the two halves to cover the centre section of the heaters and fit closing plates to each end (P).
2. Slide on two more outer canopies.
3. Stop short of the canopies already fitted and fit closing plates (P).
4. Insert the ends of the second set of canopies inside the first set at the central joint.
5. A slot is located 15mm from the end of each canopy. Align each slot i.e. one on top of each
37
Fig. 14 Canopy detail
38
2.2.10 End Caps
Remove the protective plastic coating.
Position the end cap with no tube holes (M) beneath the reflector profile at the U bend end making sure that the end cap engages inside the inner reflector . Fasten to canopy using M5 pozi set pin and washers.
Position the end cap with tube holes beneath the reflector profile at the burner end making sure that the end cap engages inside the inner reflector . Fasten to canopy using M5 pozi set pin and washers.
2.2.13 Fan Assembly
On unitary heaters only, slide the fan assembly (E2) onto the LEFT HAND TUBE
with the test point closest to the tube when viewed from behind ensuring it is fully engaged.
Secure with pinch screws.
2.2.14 Herringbone Damper Assembly
2.2.11 Burner Assembly.
On Herringbone heaters only, slide the
Slide the burner assembly (F) onto the RIGHT
HAND TUBE when viewed from behind, damper assembly (E3) onto the LEFT HAND
TUBE with the test point closest to the tube when viewed from behind ensuring it is fully ensuring it is fully engaged. Secure with grub engaged. Secure with pinch screws. screws.
2.2.12 Heat Exchanger Assembly
On VSXO only, slide the heat exchanger assembly (E1) onto the LEFT HAND TUBE when viewed from behind ensuring it is fully engaged. Secure with pinch screws.
Note: The damper assembly must be located with its damper blade vertical and left in the closed position. The manifold tube is to be sealed and secured (as described below) to the damper assembly.
39
FLOW
Manifold Tube Damper Blade
Vacuum Test Point
Emitter Tube
FLOW
External bead of jointing compound
Fitting
2.2.15 Fixing of optional End Mouldings.
If end mouldings (P) have been ordered
(optional item) fit the end mouldings with the screws provided / quick release clips to the holes in top of the canopy.
Manifold
Internal bead of jointing compound
Note The silicon jointing compound remains workable after application for only 5 minutes.
Secure the joint by drilling through the tube and fitting and fix with three pop rivets at 12 o’clock,
4 o’clock and 8 o’clock positions. 4.8mm
(3/16in) diameter pop rivets are recommended.
2.2.16 HB Manifold Assembly.
VSO Models ONLY. After fixing the heaters in the desired position, the manifold system requires fitting.
After allowing for a minimum of 75mm (3in) of penetration of the fitting into the tube, cut the tubes to the lengths required and remove all
The following pages show the exploded diaburrs and wipe off any grease or oil with a clean rag. grams of the VSO and VSXO range of heaters.
Please note the heater type, length and reference number from the delivery/advice note
Method of jointing aluminium tube
Using the applicator gun exude 4mm diameter
2.2.17 Detailed Assembly Drawings
before identifying the correct model drawing bead of high temperature silicon jointing compound externally round the end of the fitting and internally round the end of the tube.
Enter the fitting into the tube using a slight rotating movement to spread the jointing compound uniformly until a penetration of 75mm
(3in) is achieved.
40
41
42
43
These appliances should be commissioned by a qualified engineer.
The following tools and equipment are advisable to complete the tasks laid out in this manual.
Leather Faced
Gloves
Suitable alternative tools may be used.
Pozidrive
Screwdriver
Small Flat Head
Screwdriver
Large Adjustable
Spanners or 22, 26 &
27mm Spanners for fitting Of Gas Flex.
Wrench with
Extension
12mm
Spanner
13mm
Socket
4mm Allen Key
Manometer
3.2
Balancing The Herringbone System
Important. When all the heaters have
Start all burners up and allow them to run for at least 20 minutes. been installed the vacuum settings must be finally balanced in the hot condition. Adjust the damper at exit of each heater using a
4mm Allen key in the damper blade securing
Before attempting to start up the heating screw. Observing the vacuum reading using a system it is essential to perform the preliminary ‘U’ tube manometer connected to the vacuum balancing of the vacuum level at each burner test point (see over) each damper should be unit. Isolate each heater unit by unplugging the readjusted and set at a hot condition reading as electrical connector and closing the gas shown in table 6 for the appropriate size of isolating valve. heater and model.
Figure 18. HB Damper Assembly
B C
A
Ref Description
A Radiant Emitter Tube
B Manifold Tube
C Damper Blade
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Slacken screw in burner lid and open the right hand burner access door.
The two vacuum impulse hoses are in view.
Both hoses are fitted with ‘T’ pieces, one end of which has a blanking cap.
Connect extra sections of hose to each ‘T’ piece.
Remove each blanking cap.
Connect either a digital manometer or U tube gauge to the open ends of the hoses.
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Check reading against technical data.
3.3
Commissioning chart
Check installation has been carried out to these instructions.
Ensure gas and electricity supplies are isolated.
Disconnect gas hose from burner
Remove burner from tube and inspect burner head.
(See servicing instructions)
Replace burner on tube and secure.
Reconnect gas hose.
Open isolating valve.
Check soundness.
Open control housing and check that all components are securely fastened.
Check thermostat is set to maximum and is calling for heat.
The heater should now run through its start up sequence and ignite.
Switch on electrical supply.
The red neon should now be illuminated. If restarting heater a delay of 15s should be allowed.
A successful ignition is indicated by the amber light illuminating and remaining illuminated.
Turn off power and check that all components are securely fastened.
NO
Has the burner lit?
YES
Check gas pressure.
Check operation on flame failure.
Check gas pressure.
Figure 19. Gas Valve adjustment
Gas inlet test point
Check operation of air pressure switch.
Close control housing
Injector pressure test point.
Adjustment screw under cap to set injector pressure
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Leave the instructions with a responsible person.
These appliances should be serviced annually by a competent person to ensure safe and efficient operation. In exceptional dusty or polluted conditions more frequent servicing may be required. The manufacturer offers a maintenance service. Details
available on request
Suitable alternative tools may be used.
The following tools and equipment are advisable to complete the tasks laid out in this manual.
Leather
Faced
Gloves
Pozidrive
Screwdriver
Small Flat
Head
Screwdriver
Large Adjustable
Spanners or 22, 26 &
27mm Spanners for
Fitting of Gas Flex.
12mm
Spanner
4mm
Allen
Key
Manometer
Wrench with
13mm
Socket
Soft
Brush
K
Figure 20. Induced Herringbone Burner: Model VSO UT/UH (refer to spares section 5)
L M
N
A
B
C
J
H
A Ducted Air Inlet
B Induced Air Inlet
C Gaskets
D Ignitor Assembly
E Pepperpot Head
F Multi Hole Injector
G Ignition Controller
H Pressure Switch
G
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F
E
J
K
L
M
N
Neon’s (Red/Amber)
Gas Valve
Mains Input Socket
Fan Socket
Injector Carrier
D
Figure 21. Forced Gas Burner:
Model VSXO (refer to spares section 5)
H Multi Hole Injector
A 2501/2507 or 2560 Fan
B Fan Inlet Spigot
K Extrusion Burner Head
D Fan Mount Plate
E Fan Mount Plate Gasket
Please refer to spares for burner components
4.3 Burner Removal (All Options)
Step 1 Isolate mains electric and gas supplies.
Step 2 Detach the gas supply as shown below, taking care to support the burner connection.
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Step 3 On forced burners with ducted air disconnected by separating the connectors of attachment, slacken jubilee clip and remove flexible hose from the fan. the ignition lead assembly and removing the pressure switch silicon tube.
Step 4 Slacken both grub screws on the burner Step 3 The gas injector can be inspected and support casting using a 4mm Allen key to replaced if contaminated or blocked. enable the burner to be removed from the radiant tube.
Step 5 Carefully remove the burner to prevent it or any components from falling to the ground and position the assembly in a safe area.
4.4 Burner Gas Injector Servicing
Step 1 Remove the burner support casting and gasket.
When replacing the gas injector use a
12mm spanner and ensure approved thread sealant is used.
Step 4 Refit the burner support casting and replace the gaskets to ensure effective sealing.
4.5 Burner Head and Electrode Servicing
Step 1 Check the pepper pot burner head for contamination. If necessary the head can be removed for cleaning of the inside of the burner head, see below.
Step 2 The burner head assembly can be
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Step 2 The pepper pot burner head can be replaced ensuring the 5 holes on the outer ring are aligned alongside the probes.
Step 2 Loosen the 4mm grub screw and de-tatch the combustion fan.
Step 3 The condition of the ignitor assembly can be checked for deterioration. However, we advise replacement at each service to ensure continued reliability.
Step 4 Detach the electrode assembly from the burner head by removing the two screws and separating the ignitor lead connectors.
Step 5 Check the positions and spark gap as shown below.
Step 6 The burner assembly is ready to refit after servicing the combustion fan and the radiant tube assembly.
4.6 Combustion Fan Assembly Unitary heaters
Step 1 Loosen the clamp fitting on the flue
Step 3 Remove the fan orifice plate spinning.
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Figure 22. Burner head detail
Step 4 Inspect the impeller and remove any dust with a soft brush.
Step 5 Remove any dust from fan scroll and from around the motor.
Step 6 Ensure the impeller rotates freely.
Step 7 Refit components.
4.7 Combustion Fan Assembly Powered
Burner
Step 1 Slacken jubilee clip and remove the flexible hose from the fan.
Step 5 Inspect the impeller and remove any dust with a soft brush.
Step 6 Remove any dust from fan scroll and from around the motor.
Step 2 Remove fan fixings.
Step 7 Ensure the impeller rotates freely.
Step 8 Refit components.
4.8 Radiant Tube Servicing
Step 1 Brush any dust from the exterior of the tubes.
Step 2 Inspect the fan and burner tubes visually.
If the tubes appear clean, skip to servicing the reflector.
Step 3 Remove the U bend
Step 3 The combustion fan can now be detached.
Step 4 Remove the fan orifice plate spinning.
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Step 4 Withdraw the turbulators from the Step 2 Slacken casing support screws and appliance. Carefully noting their condition and position. Replace turbulators if necessary. remove heat exchanger from the radiant tube.
Step 5 The turbulators should be cleaned with a soft brush.
Step 6 If required the interior of the tubes can then be cleaned using an industrial vacuum cleaner or by using long poles and a scraper.
Step 7 Refit components.
4.9 Heat Exchanger Servicing
Step 1 Remove the flue connections.
Step 3 Remove any dust and dirt from the heat exchanger & refit.
4.10 Reflector Servicing
The condition of the reflectors should be noted.
If necessary the reflectors can be cleaned with a mild detergent.
This can significantly improve the efficiency of the appliance.
4.11 Inspection of Flue
The flue needs to be inspected and cleaned if necessary or in accordance to the regulations of the country that the appliance is installed.
4.12 Re-commissioning After Service
After servicing of the heater has been undertaken, it will be necessary to re-commission the heater as detailed in Section
3 of these instructions.
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Required Spares (refer to section 4.2)
In order to aid troubleshooting and servicing we recommend that the components shown in this section should be stocked.
Item Description Part No.
Note Any spare part components that are not approved by AmbiRad could invalidate the approval of the appliance
and validity of the warranty.
Item Description Part No.
Ignition
Controller
2015S
Pressure Switch:
VSXO (Red)
VSO (Green)
201676
201508
Twin Gas Valve:
Nat Gas
Propane
201587
201914
Amber Neon
(Burner On)
2175
Pepperpot Head 200988
Red Neon
(Mains On)
2180
Ignitor Assembly 201284 Combustion Fan
See
Section 1.11
Extruded Burner
Head
200358
Injector
See section 1.11
Gasket Set
Ducted Air Hose
Hose Clamp
201488
201321
7541
Jet Carrier 200420
Jet Carrier
(VSO / VSXO50
NG)
201630
Flame Plates:
(VSO15/20/25 NG
& VSXO20/25 NG)
(VSO15/20/25/30
Propane)
(VSO35/40/45/50
Propane)
201854
201571
201905
Cables:
Spark Electrode
(black)
Rectification lead
(purple)
Earth lead
(green/yellow)
GV Mini Harness
900225-2
900225-3
900225-1
900375
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Ensure gas & electricity supplies are enabled.
YES
YES
Check:
1. Burner controller
2. Red neon faulty
Does the RED neon
illuminate?
NO
Is there power on the burner?
NO
Check:
1. Operation of any thermostat
2. Any external fuses
3. Correct voltage is selected
YES
Does the combustion fan run?
NO
Check:
1. Wiring harness & plugs
2. Vacuum switch operation
3. Replace fan
YES
NO
Check:
1. Vacuum switch tubes
2. Emitter tubes, air inlet & flue for obstructions
3. Operation of vacuum switch
4. Replace combustion fan
Does the amber light illuminate after
10s purge?
NO
Does the vacuum switch
`pull in`?
Check:
1. Burner controller
2. Wiring harness
3. Amber neon faulty
YES
YES
Does the amber light illuminate for 10s then go out?
YES
NO
If the heater still fails to operate normally, please contact the AmbiRad service department.
Is the burner sparking?
YES
NO
Check:
1. Integrity of spark leads
2. Integrity of electrode assembly & spark gap
3. Burner controller
Does the gas valve open?
NO
Check:
1. Burner controller
2. Replace gas valve
YES
Check:
1. Burner inlet pressure
2. Burner nozzle pressure
3. Check live & neutral polarity
4. Check presence of good earth
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7.1.1 Burner Controller Replacement (VSXO)
Step 1 Slacken screw in burner lid and open the right hand burner access door.
Step 2 Undo 2 screws from controller bracket and remove. Disconnect burner controller from the wiring harness.
7.1.2 Burner Controller Replacement (VSO)
Step 1 Slacken screw in burner lid and open the right hand burner access door.
Step 2 Disconnect burner controller from the wiring harness.
Step 3 Disconnect the HT Lead from burner controller.
Step 3 Disconnect the HT Lead from burner controller.
Step 4 Remove the four screws attaching the controller to the bracket and remove.
Step 4 Remove the two screws attaching the controller to the burner and remove.
Step 5 Fit new burner controller
Step 6 Refit HT leads and refit burner controller to wiring harness.
Step 7 Test product and close access doors.
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Step 5 Fit new burner controller
Step 6 Refit HT leads and refit burner controller to wiring harness.
Step 7 Test product and close access door.
7.2 Air Pressure Switch Replacement
Step 1 Disconnect the two silicone impulse tubes and three wiring connections making note of replacement positions.
7.3 Gas Valve Replacement
Step 1 Remove the burner assembly as described in the section 4.3 Servicing.
Step 3 Open the left hand access door and detach the impulse hoses from the air pressure switch.
Step 2 Remove the two screws as shown below.
Step 4 Remove the 4 screws holding the burner head onto the burner assembly.
Step 3 The air pressure switch can now be removed.
Step 4
Fit the new air pressure switch ensuring the impulse tubes are connected as shown below.
Step 5
Test product a n d c l o s e access doors.
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Step 5 The burner head can now be detached by disconnecting the impulse tube and the burner head wiring.
Step 6 Detach the two screws holding the front of the gas valve.
Step 7 Remove the four screws holding the rear burner plate in position plus the two screws from the gas valve flange.
Step 11 The gas valve can now be replaced.
Step 12 Refit all components in reverse order.
Step 13 (For Natural Gas burners ONLY).
Ensure step screw is in the correct position as indicated in the diagram below.
Step 8 Remove the rear plate.
Step 9 The jet carrier, gas inlet, and wiring harness can now be detached from the gas valve.
Step 10 The two screws retaining the gas valve can then be removed.
Step 14 Set gas pressures to data badge or as per section 1.11 and ensure reliable burner performance.
Step 15 Test product and close access doors.
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Notes
58
Notes
59
8. User & Operating Instructions.
8.1 To Start the Heater
1. Ensure gas supply is turned on.
2. Electrical supply to the controls is on.
3. Ensure that the controls are correctly set i.e.;
•
•
•
Clock is correctly set.
Heater program is correctly set.
Required room temp is correctly set
4. Once the heating controller ‘calls for heat’ power will be supplied to the heater(s). The red neon will then illuminate.
5. After a pre-purge period of 10 seconds the burner will ignite and the amber neon will then illuminate.
6. If lockout occurs press the lockout reset button (if available), or switch off electrical supply and restart after 15 seconds.
7. If lockout occurs three times consecutively switch off and isolate the gas and electricity supplies.
Contact the AmbiRad Service department.
8.2. To Switch Off Heater
1. Switch off electrical supply to the heater.
The burner will stop and the fan will shut off.
2. If the heater is to be switched off for periods in excess of one week it is highly recommended that both the gas and the electrical supplies are turned off.
8.3. Routine Maintenance between Service
Intervals
After ensuring that the heater is cold and mains electric isolated, cleaning of the reflectors with a soft cloth and a mild detergent (non solvent based cleaners only) in water can be undertaken.
Additional removal of dust from the radiant tubes, burner and heat exchanger can be undertaken.
8.4 Frequency of Servicing
The manufacturer recommends that to ensure continued efficient and safe operation of the appliance, the heater is serviced annually by a competent person e.g. every year in normal working conditions but in exceptional dusty or polluted conditions more frequent servicing may be required.
The manufacturer offers a maintenance service.
Details are available on request.
AmbiRad.
For further technical and service support visit our Support Information Database at www.s-i-d.co.uk
For Service requirements, please contact
AmbiRad Limited Fens Pool Avenue
Brierley Hill West Midlands DY5 1QA
United Kingdom.
Telephone 01384 489700
Facsimile 01384 489707
Email [email protected]
Website www.ambirad.co.uk
Technical Support www.s-i-d.co.uk
AmbiRad is a registered trademark of AmbiRad Limited. Because of continuous product
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