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Ambirad AR13 SL, Installation And Servicing Manual, Page: 2 / 20

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Ambirad AR13 SL Installation And Servicing Manual Download Page 2

Index

AR and ARE series gas fired 
radiant tube heaters

Gas connection

Standards

Electrical connection

Assembly instructions

Health and safety

Fixing tubes and brackets

Fitting reflectors and end caps

Burner/fan/damper assembly

AR and ARE series double linear 
gas radiant tube heaters

HB and DL damper settings

Installation – suggested methods 
of heater suspension

Flue connection

Fresh air ducted inlet 

(all models)

Commissioning for individually 
flued and unflued heaters

Routine service

Replacement of components

Trouble shooting checklist

User instructions for Ambi-Rad 
AR and ARE series of heaters

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Summary of Contents for AR13 SL

Page 1: ...AR ARE SERIES GAS FIRED RADIANT TUBE HEATERS Installation and servicing manual ...

Page 2: ...mbly AR and ARE series double linear gas radiant tube heaters HB and DL damper settings Installation suggested methods of heater suspension Flue connection Fresh air ducted inlet all models Commissioning for individually flued and unflued heaters Routine service Replacement of components Trouble shooting checklist User instructions for Ambi Rad AR and ARE series of heaters 19 18 17 16 15 14 13 12 ...

Page 3: ...8 0mbar Correct gas pressure AR U Tubes Heaters other British Standards and Codes of Practice Pipes of smaller size than the heater inlet gas connection should not be used The complete installation must be tested for soundness as described in the previous standard The gas supply must not be in the position where it is subject to overheating The gas union service cock MUST be fitted in the gas supp...

Page 4: ...lbows must be fitted to eliminate sharp bends near end fittings 400 7 5 mm Valve COLD POSITION NOTE HOT POSITION Corrugated Flexible Metallic Hose Assemblies to BS 6501 Part 11984 Class 1 Type C Construction 600 mm Long Ambi Rad Part No 6500 NOTE CORRECT INSTALLATION AS SHOWN WILL ALLOW FOR APPROX 100 mm OF MOVEMENT DUE TO EXPANSION THIS INSTALLATION LAYOUT IS THE ONLY METHOD RECOMMENDED BY THE IN...

Page 5: ...ime switch and if required manual control switches and a frost thermostat Figure 2 Typical wiring connections Figure 3 Internal wiring diagram AR Burner Circuits and controls All such controls and switchgear must be rated to handle the total inductive load of the circuit they control Load per Ambi Rad heater is 0 55 amp For large installations the use of relays and contactors should be considered ...

Page 6: ...pansion See Fig 4 AR45 UT AR45 HB and AR50 UT AR50 HB Identify the difference between the two radiant tubes The stainless steel burner tube is labelled and weighs less than the return tube The stainless steel tube must be located on the firing leg only Join short tube to long tube with swaged joint One of the Type B brackets must be fitted with one standard U bolt and one extra long threaded U bol...

Page 7: ...n first and second reflector sections so they overlap with the punched holes in line with the tabs on the second suspension bracket from the burner and secure using M6 nuts bolts and washers provided passing through both reflector sections Position third and fourth reflector sections so they overlap with punched holes in line with the tabs on the fourth suspension bracket and secure using M6 nuts ...

Page 8: ... joint detail Slide the burner control assembly onto the right hand tube when viewed from the open ends of the tubes ensuring it is fully engaged Note For both horizontal and inclined mounting the burner assembly must be perfectly horizontal with the burner indicating lights facing downwards Slide fan damper assembly onto left hand tube ensuring it is fully engaged The fan discharge outlet should ...

Page 9: ...mounting unflued Figure 9 Inclined mounting flued Fit reflector end caps using M5 bolts washers and S clips Not applicable to ARE range Note Do not stand on reflectors when removing plastic film Fit relector end caps before fitting burner assembly and fan assembly ...

Page 10: ...ons and reflector installation Data is shown for all DL heaters Model O A length m Total installed weight kg SL data sheet reference AR13 DL 22ft 13 26 112 GB AR 068 0901 AR22 DL 24ft 15 0 128 GB AR 069 0901 AR22 DL 27ft 16 0 144 GB AR 083 0603 AR22 DL 32ft 19 0 170 GB AR 084 0901 AR22 DL 36ft 21 0 192 GB AR 087 0901 AR35 DL 33ft 20 0 184 GB AR 070 0901 AR35 DL 42ft 25 0 234 GB AR 089 0103 AR35 DL...

Page 11: ...ing when hot mbar ARE13SHN 22 1 1 ARE13SHP 22 1 1 ARE22SHN 27 1 1 ARE22SHP 27 1 1 ARE35SHN 42 1 0 ARE35SHP 42 1 0 ARE40SHN 42 1 4 ARE40SHP 42 1 4 ARE45SHN 50 1 6 ARE45SHP 50 1 6 ARE45SHN 60 1 9 ARE45SHP 60 1 6 ARE50SHN 50 1 8 ARE50SHP 50 2 3 ARE50SHN 60 1 8 ARE50SHP 60 2 3 ARE Linear Herringbone DL Heaters Heater type Damper setting when hot mbar AR13UHN 1 9 AR13UHP 1 9 AR22UHN 1 6 AR22UHP 1 6 AR3...

Page 12: ...ding the heaters If there are any doubts as to the strength or suitability of roof steelwork to which heaters are to be suspended please refer to Consultant Architect owner of the building The recommended minimum and preferred mounting heights for the Ambi Rad heaters are as below The recommended clearance to combustibles are shown in the table opposite B Model Mounting position Minimum mounting h...

Page 13: ...construction or fixed to two wall mounting brackets which must incorporate a short section of hanging chain to allow movement due to thermal expansion Alternatively 10mm diameter mild steel drop rods can be used Wall mounting brackets must support the heater at an angle of inclination of between 35º and 55º and are available from the manufacturer The angle is varied by adjusting the drop rods or c...

Page 14: ...14 Figure 13 Mounting of U tube heater Socket Plug Figure 14 Mounting of SL tube heater ...

Page 15: ...all models Natural ventilation Preferably at low level Up to and including 60kW 4 5cm2 kW Over 60kW 270cm2 2 25cm2 kW in excess of 60kW total rated input Forced ventilation Minimum proven air flow is 2 35m3 h kW of total rated input For detailed information please refer to BS 6896 1991 Installation of Gas Fired Overhead Radiant Heaters for Industrial and Commercial Heating 2nd and 3rd family gases...

Page 16: ...arth To shut down the heater switch off the power supply to the heater Automatic control of the heater or a series of heaters may be achieved by incorporating thermostats time switches frost thermostats manual over ride switches etc in the electrical supply to the heater s It is essential to allow a delay of 15 seconds after switching off a heater before attempting to restart If at any time after ...

Page 17: ...flow Renew the electrode assembly if it is not in good con dition The assembly is then lifted out of the combustion chamber and the two connection cables disconnected If the electrode assembly is in good order check the spark electrode gap This should be 3 5mm 0 5mm Adjust the gap if necessary by bending the earth rod Refit the electrode assembly in the reverse order of removal ensuring that the e...

Page 18: ...ectrical connector on the side of the electronic sequence controller Unplug the single grey high tension lead from the electronic sequence controller Remove the two bolts securing the sequence controller to the control housing door and replace the sequence controller using the high tension Gas supply pipe Gas safety control valve 3 pins main inlet socket Safety control housing Electronic sequence ...

Page 19: ...nit plug A reading of 10 000 ohms indicates short circuit on gas valve burner indicator light or associated wiring HB Herringbone system only Leaks in joint separation in manifold system Reseal or reconnect Burner proceeds to ignition stage normally No spark Check electrode for cracks replace if necessary indicated by audible spark valve energised Check high tension connections are secure and burn...

Page 20: ...eater is turned on 2 Ensure that the settings of any time switch and thermostat are such that the heating system will be required to operate 3 Switch on electrical supply to heater Mains light coloured red will illuminate and ignition sequence will commence 4 After completion of an air purge period ignition of the burner will occur and burner light coloured amber will illuminate 5 If lock out occu...

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