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Summary of Contents for Ambirad VISION COMPACT Series
- Page 1 VISION COMPACT GAS FIRED RADIANT TUBE HEATERS Operation, maintenance and servicing manual VC12 & VC20...
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Page 2: Table Of Contents
Index Vision Compact gas fired radiant tube heaters Gas connection Standards Electrical connection Fan assembly Vision Compact herringbone gas radiant heaters Health & safety Installation - suggested methods of heater suspension Installation of Vision Compact heaters Flue connection Fresh air ducted inlet (all models) Commissioning for individually flued and unflued heaters Routine service... -
Page 3: Gas Connection
the heater inlet gas connection should not 3 Standards 1 Vision Compact gas fired be used. The complete installation must be radiant tube heaters Ambi-Rad heaters must be installed in tested for soundness as described in the accordance with the relevant provisions of previous standard. - Page 4 Figure 1 Correct installation of flexible gas connection Corrugated Flexible Metallic Hose Assemblies to BS 6501 Part 1 1991 Class 1 Type C Construction 1 m long - Ambi-Rad Part No. 6500-2 Note Correct installation as shown will allow for approx 150mm of movement due to expansion. This installation layout is the only method recommended by the institute of Gas Engineers, the manufacturer and Ambi-Rad Ltd.
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Page 5: Electrical Connection
Alternatively, connection may be made via a 4 Electrical connection fused three pin plug and un-switched Circuits and controls shuttered socket, both complying with the requirements of BS 1361:1971 (1986). All such controls and switchgear must be This appliance must be earthed. Ensure that a copy of the lighting rated to handle the total inductive load of instructions plate is affixed adjacent to the... -
Page 6: Fan Assembly
The recommended minimum and preferred 5 Fan assembly mounting heights, along with the Note For both horizontal and inclined recommended clearance to combustibles for mounting the fan assembly must be perfectly the Vision Compact range of heaters is vertical with the fan outlet facing upwards. shown in the table below. -
Page 7: Health & Safety
Wall mounting brackets must support the 9 Installation of Vision Compact heater at an angle of inclination between heater 30˚ and 45˚, and are available from the Health & safety manufacturer. The angle can be varied by adjusting the drop rods or chain on each A qualified installer is required to install the bracket. -
Page 8: Flue Connection
10 Flue connection Flue technical details Model VC20 VC12 Gas type Mass flow rate of flue gases (kg/s) 0.0113 0.0105 0.0077 0.0077 Flue gas temperature (˚C) @ fan outlet Flue pressure (Pa) Positive The Vision Compact heater may be installed The fan flued adaptors are designed to Herringbone flue system with or without a flue to atmosphere pro-... -
Page 9: Fresh Air Ducted Inlet (All Models
will at the same time be energised. If 12 Commissioning for 11 Fresh air ducted inlet (all ignition is successful the flame is detected individually flued and unflued models) by the flame sensing probe and the ignition heaters spark will be switched off. The ‘burner on’ When the Vision Compact heater is to be Figure 5 (amber) lamp indicates that the gas safety... -
Page 10: Routine Service
Unscrew the fixing screw in the housing lid Hand the ‘User Instructions’ to the user and soft brush. Similarly remove any dust from and remove. explain how to operate the heater. the finger guard covering the secondary (cooling) impeller and the mesh aperture in Figure 8 Leave the ‘Installation and Servicing the motor cover. -
Page 11: Herringbone Adjustment
simply withdrawn for cleaning by removing Figure 14 the M6 bolts securing it and lifting it off the heater. The reflector can be cleaned with a soft cloth and detergent in water. A mild non abrasive metal polish may be used in cases of extreme discolouration. - Page 12 15 Replacement and servicing of components in the burner assembly Figure 11 Vision Compact burner assembly VACUUM ELECTRONIC SEQUENCE PROVING SWITCH CONTROLLER AIR INTAKE GUARD NEONS SAFETY CONTROL 3 PIN MAINS HOUSING SOCKET COMBUSTION CHAMBER PRESSURE SENSING TUBES 3 PIN FAN SOCKET BURNER ASSEMBLY SUPPORT SPINNING...
- Page 13 Burner head, Injector and Electrode Electrode assembly Remove the four screws securing the gas assembly Figure 23 valve to the burner assembly. The gas valve can now be replaced. Figure 20 After re-fitting in reverse order of removal, and prior to fitting the controls cover, ensure all joints are gas tight, and set burner pressure to that indicated on the data badge.
- Page 14 Electronic sequence controller Figure 28 Disconnect the electrical connector from the controller to the wiring harness and the ignition high tension lead. Remove the plastic push clips and replace the controller. Re-fit in reverse order of removal ensuring electrical connections are made. Figure 29 S.I.T vacuum proving switch...
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Page 15: Trouble Shooting Checklist
16 Trouble shooting checklist Symptoms Possible causes Remedy Burner will not start Red ‘mains on’ does not illuminate. External controls, thermostats, time switch etc. Adjust controls. not calling for heat. Fuse blown. Check for short circuit in wiring or individual electrical components. Red light illuminates. -
Page 16: Spare Parts
17 Spare parts VC12 Natural Gas (G20) or Propane (G31) only Description Part Number Fan orifice plate assembly FSER12USA30 Igniter probes 3149-1 Pressure switch (SIT or EAC) 2190 Burner head 3035 Combustion chamber gasket 200553 VC12 Natural Gas (G20) only Support spinning gasket M101391 3.0mm injector... -
Page 17: Method For Calculating Equivalent Flue
18 Method for calculating equivalent flue resistance - Appendix 1 Component Internal Size (mm) Resistance factor (Ke) 0.78 Pipe per meter 1.22 per fitting 90˚ bend 0.61 135˚ bend per fitting 0.25 100GCI Terminal per fitting 125 GCI 0.25 Inlet resistance of flue (Ki) Outlet resistance of flue (Ko) 100mm spigot 100mm flue... - Page 18 Figure 30 Example layout of a typical flue arrangement Example Layout Of A Typical Flue Arrangement GCI Terminal Spigot Heater...
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Page 19: Important Information
19 User instructions for Ambi-Rad Vision Compact series of heaters Vision Compact is an overhead radiant heating system for industrial and commercial buildings. The Vision Compact heater is suspended horizontally overhead from the roof or inclined mounted at 30˚ to 45˚ from the horizontal and heats by radiation in the same way as the sun.
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