Ambirad ARC Series Installation, Operation And Maintenance Manual
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Ambirad ARC Series Installation, Operation And Maintenance Manual

Gas-fired continuous radiant tube heating system
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WARNING: Improper installation, adjustment,
alteration, service or maintenance can cause
property damage, injury or death. Read the installation,
operating and maintenance instructions thoroughly
before installing or servicing this equipment.
INSTALLATION / OPERATION / MAINTENANCE
Applies to:
Gas-Fired, Continuous Radiant
CONTINUOUS RADIANT TUBE HEATING SYSTEMS
Part # 700150
Model ARC 120V 60Hz
Tube Heating System
ARC Series

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  • Page 1 INSTALLATION / OPERATION / MAINTENANCE Model ARC 120V 60Hz Applies to: Gas-Fired, Continuous Radiant Tube Heating System ARC Series CONTINUOUS RADIANT TUBE HEATING SYSTEMS WARNING: Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read the installation, operating and maintenance instructions thoroughly before installing or servicing this equipment.

  • Page 2: Table Of Contents

    Document Index. 2.14 Installation of Ball Guard System 1 Installation Requirements 2.14.1 Installation 1.1 Health & Safety 2.14.2 Blanking Shield 1.2 Warnings 2.15 Installation of Slimline Decorative Grille System 1.3 Burner Model Definitions 2.15.1 Standard Modular Assembly 1.4 Heater Suspension 2.15.2 Shortened Assemblies 1.5 Wall Mounting 2.16 Installation of Blanking Shields...

  • Page 3: Installation Requirements

    Introduction. Welcome to the range of AmbiRad ARC radiant branches manifolded together, linked by Continuous radiant tube heating system. Local a tail pipe to a vacuum fan discharging the spent regulations may vary and it is the installer’s products of combustion to atmosphere. A...

  • Page 4: Warnings

    Warnings gas connections should be made as indicated Allow for system expansion, use relevant jointing compounds on gas connections and do Improper installation, adjustment, not exceed maximum gas pressure at burners. alteration, service or maintenance can cause property damage, injury or death.

  • Page 5: Burner Model Definitions

    This measurement building. can be reduced for perimeter type systems. (See figure 1c). The suggested mounting heights for AmbiRad • heaters are given in table 1 below. For ease of servicing and burner removal minimum clearances should be maintained.
  • Page 6 NOTE. HOOKS ARE TO BE CLOSED UP AFTER ASSEMBLY OPTIONAL TURNBUCKLE (±3"ADJUSTMENT) 2/0 GA CHAIN (TWISTED LINK, PLATED) AMBIRAD SPEEDLINK # 6524 BRACKET REFLECTOR TUBE DROP ROD CHAIN Figure 1b. Bracings to eliminate sway - optional FRONT & BACK BRACE IN LINE WITH TUBING & REFLECTOR SUSPENSION...

  • Page 7: Clearance To Combustibles

    Figure 1.c Overall Dimensions A - Burner Tube B - LR Burner 10" C - Optional Perimeter Reflector D - Wall 20" MINIMUM (4” MIN - Perimeter Systems) 14" Clearance to Combustibles. The minimum clearances to combustible materials are given in table 2. WARNING: These minimum distances MUST be adhered to at all times.
  • Page 8 Figure 1d Diagram illustrating the clearance to combustibles A Radiant tube; B Standard reflector; C Combustible material underneath; D Combustible material on side; E Combustible material above; F Perimeter reflector; Table 2 clearance to combustibles Burner Model ARC12LR ARC18LR ARC24LR End vent In-line End vent...
  • Page 9 Figure 1.e Clearance for servicing - distances to walls and obstacles above. 16” 1” 8” 18” 50” MIN Figure 1.f Clearance for servicing - distances to obstacles above. B - Reflector D - Obsticalce to side E - Obstacle over burner F - End vent module G - Burner lid H - Heat shield...
  • Page 10 Figure 2. Correct orientation of Ball Valve Gas Connection and Supply WARNING: Before installation, check that the local distribution conditions, nature of gas and pressure, and adjustment of the appliance are compatible. Gas Flow The gas connection on the heater is ½” N.P.T Gas Flow external thread.

  • Page 11: Electrical Connections

    WARNING: FIRE OR EXPLOSION HAZARD - Expansion of the radiant pipe occurs with each firing cycle causing the burner to move with respect to the gas line. This can result in a gas leak producing an unsafe condition. It is therefore essential to provide some flexibility in the final gas line connection by use of an approved armoured flexible connector or stainless steel expansion loop as shown in the drawings.

  • Page 12: Fan Terminal Connections

    1.8.1 Fan Terminal Connections L.V. 115/230V~60/1 200/230V~60/3 400/460V~60/3 1.8.2 Pressure Switch Connections The pressure switch is attached to the damper assembly Release the plastic cap via two screws. SMARTCOM CONTROLLERS ONLY: connect incoming cable terminal 1 - (normally closed contact) and terminal 3 - (common contact) Replace the plastic cap via two screws.
  • Page 13 1.8.4 Damper Connections The fan damper is wired via a plug and socket FIXED CONNECTION SOCKET TO arrangement. The socket is connected to the assembly DAMPER via a bracket. Release the loose plug and CONTRACTORS remove the cap via two CONNECTION PLUG screws.

  • Page 14: Typical External

    1.8.5 ARC LR system - Typical External Diagram...

  • Page 15: Wiring Details

    1.8.6 Wiring Details Figure 4.a. LR internal wiring diagram MAINS INPUT IGNITOR FLAME SENSOR GRN/YEL 120V 60Hz Supply BLUE BLUE LAMPS MAIN MAINS J.S.T. DELAY TIMER SOLENOID BURNER VALVE VALVE J.S.T. BLUE Figure 4.b. LR internal wiring diagram - c/w N/O or N/C volt free Lockout contacts 120V 60Hz EMC FILTER IGNITOR...
  • Page 16 Figure 4.c. ARC Single Zone schematic interconnecting wiring. SmartCom Mulitizone 1/L 2/N S/R0S/R1 D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20 LIVE NEUT Black Bulb Sensor Outside 40VA Sensor Trans (where applicable) S-0700 Relay eg E.M.S. L1 (HOT) 120V 60Hz 1 Ph 20 amp Supply...
  • Page 17 Figure 4.d. ARC Split Zone schematic interconnecting wiring (2 zones shown)
  • Page 18 Figure 4.e. ARC Multi Zone schematic interconnecting wiring (2 zones shown)
  • Page 19 Figure 4.f. ARC Single Zone system c/w motorised damper schematic interconnecting wiring. SmartCom Mulitizone 1/L 2/N S/R0S/R1 D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20 LIVE NEUT Black Bulb Sensor Outside 40VA Sensor Trans (where applicable) S-0700 Relay eg E.M.S.
  • Page 20 Figure 4.g. ARC Modulating Split Zone schematic interconnecting wiring (2 zones shown)
  • Page 21 Figure 4.h. ARC Independently modulating Split Zone schematic interconnecting wiring (2 zones shown)
  • Page 22 Figure 4.j. ARC modulating Multi Zone schematic interconnecting wiring (2 zones shown)
  • Page 23 Figure 4.k. ARC modulating Single Zone 3 phase schematic interconnecting wiring. SmartCom Mulitizone 1/L 2/N S/R0S/R1 D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20 LIVE NEUT Black Bulb Sensor 40VA Trans 120V 60Hz 1 Ph Outside 20 amp Supply Sensor...
  • Page 24 Figure 4.l. ARC modulating Single Zone 3 phase via Inverter schematic interconnecting wiring. SmartCom Mulitizone 1/L 2/N S/R0S/R1 D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20 LIVE NEUT Black Bulb Sensor Outside 40VA 120V 60Hz 1 Ph Sensor Trans 20 amp Supply...
  • Page 25 Figure 4.m. ARC Split Zone 3 phase schematic interconnecting wiring (2 zones shown)
  • Page 26 Figure 4.n. ARC Split Zone 3 phase via inverter schematic interconnecting wiring (2 zones shown)
  • Page 27 with the National Fuel Gas Code, ANSI Z223.1/ 1.9 Ventilation Requirements NFPA 54. Considerations. Any portion of vent that passes through a combustible wall must be insulated, or use an The vacuum fan must be located as shown in approved insulating thimble. the layout drawing.
  • Page 28 Ensure that the flexible ductwork is installed to 1.10.Ducted Air Inlet Considerations. allow for expansion of the heating system. Heat resistant flexible tube is connected to the On a header duct, the main air supply header burner assembly ducted air adaptor and the which is feeding the individual branch ducts and EVM ducted air adaptor and connected to the burner/end vent supply ducts must have a...
  • Page 29 1.11 Vacuum fan mounting details (Type ‘F200NA’ fan illustrated) Table 4. Vacuum fan dimensions Fan Size F100NA F200NA(3P) F300NA A (crs) 5.1” 5.9” 7.2” 14.6” 16.9” 19.9” 6.7” 8.0” 8.3” 14.0” 17.0” 17.9” E (Ø) 3.7” 4.3” 6.0” G (Ø) 4”...
  • Page 30 1.12 Technical Details. Tables 5a Burner Details No of Injectors ½” N.P.T Gas Connection Internal thread Burner current 0.1 (per burner) Electrical Voltage/Ph/Hz 120 volt 1 phase 60Hz Burner Type 12LR 18LR 24LR 32LR 38LR 46LR Burner Details Heat input (Gross) Btu/h 41,000 61,000...
  • Page 31 Tables 5c. Heat inputs and gas consumptions for modulation heaters Burner Type 18LR 24LR 32LR 38LR Burner Details Heat input - LOW Fire (Gross) Btu/h 30,000 39,000 52,000 63,000 Heat input - HIGH Fire (Gross) Btu/h 74,000 98,000 130,000 155,000 Gas consumption rate HIGH Fire ft³/h Natural Gas...
  • Page 32 Table 9. Fan Details Fan Size/part number F100NA F200NA F200NA3P F200NA3P480 F300NA Fan ref 202074 202073 202072 Motor ref CX-75SAH CX-75AH CX-75AH CX-75AH CX-100AH Power kW/hp 0.4/0.5 0.75/1.0 0.75/1.0 0.75/1.0 1.5/2.0 Supply to Fan V/Hz/P 115/230~60/1 115/230~60/1 208-220~60/3 480~60/3 230/460~60/3 Run Current 4.5/2.7 9.0/4.5...

  • Page 33: Tools Required

    2. Assembly Instructions. PLEASE READ this section prior to Please ensure that all packaging is assembly to familiarise yourself with the disposed of in a safe environmentally components and tools you require at the friendly way. various stages of assembly. Carefully open the packaging and check the contents against the For your own safety we recommend the parts and check list.
  • Page 34 Slide the second tube into the coupler ensuring 2.2.2 Couplers that the rivet stop has butted up to the tube end. The ARC Tube Coupler is a screw tightening, self aligning - positive located tubular coupler. Manufactured in a stainless steel it is available in both 100mm (4”) and 150mm (6”).

  • Page 35: Reflectors

    2.2.3.3 Corner Reflectors 2.2.3 Reflectors Used where radiant tubes are joined with a 90° The radiant tube sections of the system are bend. The corner reflector comes in two pieces fitted with reflectors made of either aluminum, and is assembled on-site. stainless steel or aludip to direct infra-red rays downwards.

  • Page 36: Reflector Support Brackets

    A perimeter suspension bracket is available which has the same profile as the standard brackets extended side accommodate the perimeter reflector. Perimeter Reflector Support Bracket 2.2.4.2.1 Attachment reflector bracket. Primeter Fit the reflector bracket (B) around the Suspension Bracket tube and tighten the set pin (D) to clamp the central clip (C) to the tube.

  • Page 37: Lr Burner

    The next downstream reflector overlap must be a ‘fixed joint’. LR Burner head This pattern of alternate sliding and fixed joints will continue up to the next in line burner or damper assembly. The ignition and flame sensing electrode assembly is mounted to A reflector support bracket must be positioned at the end vent and at the damper the casting flange of the...
  • Page 59 3. Commissioning Instructions. These appliances should be commissioned by a qualified engineer. Tools Required. following tools equipment Suitable alternative tools may be used. advisable to complete the tasks laid out in this manual. Various Various Flat Head Manometer Phillips Screwdrivers Screwdrivers Allen Wrench...
  • Page 61 Set up 3.4.6 Remove power to the system and allow fan to halt. End vent vacuum settings are made firstly by 3.4.7 Ensure that each burner is electrically means of adjusting the damper at the vacuum re-connected at the end vent module plug/ fan inlet, this brings the end vent with the lowest socket.
  • Page 62 Final Commissioning. Using a phillips screwdriver, reposition mechanical end stop (A) to final bracket position. 3.5.1 Check that the burner injector pressures Reconnect power to damper. Check are zero ±0.1in w.c..Adjust if necessary. correct direction of rotation (i.e. when 10Vdc from controller = damper fully 3.5.2 Check operation of thermostat controllers open).
  • Page 63 End Vent L104102 L104101 L104100 L104103 Orifice Plate (16mm) (24mm) (27mm) (28mm) End Vent Suction (All Models) Minimum Fire 0.5” to 1” W.C. Maximum Fire 2.5” to 3” W.C. Nb: Please contact an AmbiRad representative for installations over 4000’ elevation...
  • Page 65 4. Servicing Instructions. 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 Tools Required.
  • Page 66 Figure 7.b. LR Burner 31 34 17 41 1 Control housing base plate – L102001 23 ½” plug – L100202 2 Control housing lid – L102009 24 Valve mounting bracket – L102020 3 Full sequence gas controller – 3256-11 26 Grommet (gas supply) – B200500 4 Multi functional gas valve –...

  • Page 67: Condensate Trap

    4.3 Vacuum fan 4.7 Condensate trap Inspect fan and flue ductwork for Inspect for dirt and scale and any contamination. clean if necessary. Inspect expansion joints damage and replace if necessary. 4.8 Burner electrodes Check ceramic visually for build 4.4 Tubes up of carbon or cracks.
  • Page 68 5. Spare Parts. Required Spares Note Any spare part components that are not approved by AmbiRad could invalidate In order to aid troubleshooting and servicing we the approval of the appliance and validity of recommend that the components shown in this the warranty.
  • Page 69 Item Description Part No. Item Description Part No. Burner Head End Vent Assembly LR12-18 L100102-SUB12-18 Module LR24-46 L100102-SUB Flame Retention F100NA F100NA Grid F200NA F200NA LR12-18 L100175-SUB F200NA3P F200NA3P LR24-46 L100171 Vacuum Proving Switch L104045 F300NA F300NA 100mm (4”) C112110 Damper Motor N9002 Tube Coupler...
  • Page 70 NRV LR Injector/Air Shutter selection chart Jet Size dia mm Sutter Size dia mm EVM Orifice Plate dia mm Burner Part number Part number Part number L100536 L100322 14.5 L104102 L100544 L100321 L104101 L100549 19.5 L100320 L104100 Natural L100554 L100314 L104093 L100558 L100316...

  • Page 71: Vacuum Fan

    6. Fault Finding Guide. Symptoms Possible causes Remedy Vacuum fan is running but there is no Thermostat is satisfied. Check to see that thermostat is calling for heat. power at burner. Neon lights are off. No power at burner. Check for 240V supply. Blown fuse in supply to heater.

  • Page 72: Burner Head

    7. Replacing Parts. 7.1 Removal of burner i Remove the burner heat shield. assembly. j When replacing do so in the reverse order ensuring that the gasket between the burner heat shield and combustion chamber (28) is a Disconnect electrical supply at burner mains undamaged or replaced.

  • Page 73: Filter Replacement

    c Pull lid (2) apart and upwards from base (1). d Disconnect JST connection (3a). 7.3 Filter Replacement. e Disconnect ignition wire from controller (3b). f Release three push clips (32) from controller fixing holes. a Release the slider latches (30) from the underside of the burner base plate (1).

  • Page 74: Electrode Assembly Replacement

    f Remove fixing screws from timer bracket and withdraw. .7 Injector Replacement. (See figure 6a) a Turn off gas and disconnect electrical supply. b Release the slider latches (30) from the underside of the burner base plate (1). c Pull lid (2) apart and upwards from base (1). d remove fixings screws (37) and air shutter plate (9) from top of burner casting.
  • Page 75 Combustion Chamber Viewing Window Replacement. a Turn off the system including the vacuum fan. b Unscrew dome nuts (47) and spring washers (48). Remove sight glass cover (49), gasket (50) and mica window (51). c Replace in reverse order as shown ensuring components are re-assembled in correct order.

  • Page 76: User And Operating Instructions

    8. User & Operating Instructions. AmbiRad is the manufacturer of a series of tubular infra-red heaters designed for overhead heating of industrial and commercial buildings. Individual heating units are suspended from the roof or mounted at an angle on the wall This appliance must only be installed by qualified craftsmen in accordance with the requirements of local and National Codes.

This manual is also suitable for:

Arc18lrArc12lrArc24lrArc32lrArc46lrArc38lr

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