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Ambirad NRV12LR, Installation Instructions Manual, Page: 2 / 28

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Ambirad NRV12LR Installation Instructions Manual Download Page 2

Document Index. 

1   Installation Requirements 

 
1.1 Health & Safety 
1.2 Burner Model Definitions 
1.3 Heater Suspension 
1.4 Clearance to Combustibles 
1.5 Gas Connection & Supply Details 
1.6 Electrical Connections 

1.6.1 Typical Wiring Schematic 
1.6.2 Wiring Details 

1.7 Ventilation Requirements 
1.8 Exhaust & Air Inlet Options 

1.8.1 Exhaust Flue Considerations 
1.8.2 Ducted Air Inlet Considerations 

1.9 Vacuum Fan Details 
1.10 Technical Data 

 

 

2 

User and Operating Instructions 

 

2.1 To Start Heater 
2.2 To Switch Off Heater 
2.3 Routine Maintenance Between Service Intervals 
2.4 Frequency of Servicing 

Summary of Contents for NRV12LR

Page 1: ...d 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 an...

Page 2: ...onnections 1 6 1 Typical Wiring Schematic 1 6 2 Wiring Details 1 7 Ventilation Requirements 1 8 Exhaust Air Inlet Options 1 8 1 Exhaust Flue Considerations 1 8 2 Ducted Air Inlet Considerations 1 9 Va...

Page 3: ...nt tube The radiant heat emitted from the hot tube is directed downwards by reflectors The remaining interconnecting tube is called the tail pipe and radiates with less intensity The operating tempera...

Page 4: ...amber 1 3 2 2 Subsequent supports are placed approximately 2 8m apart including one at each combustion chamber location This gives a max imum load per support of 24kg 1 3 2 3 A support must always be...

Page 5: ...5 Figure 1 b Clearance for servicing distances to walls and obstacles above Figure 1 c Clearance for servicing distances to obstacles above G G E E Obstacle over burner F End vent module G Burner lid...

Page 6: ...00 770 600 770 Dim A Perimeter reflector mm 305 450 305 450 305 450 Burner Model NRV32LR NRV38LR NRV46LR End vent In line End vent In line End vent Below tube Dim D Without undershield mm 1440 1700 15...

Page 7: ...nd Supply A competent or qualified engineer is required to either install a new gas meter to the service pipe or to check that the existing meter is adequate to deal with the rate of gas supply requir...

Page 8: ...taken to observe the minimum pipe bend diameter minimum 250mm maximum 350mm pipe expansion distance minimum 30mm maximum 70mm as shown in fig e Maximum bend diameter for the hose is 450mm The correct...

Page 9: ...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 flexibl...

Page 10: ...Burner End Vent Burner 2nd Branch Zone 1 1st Branch Zone 1 1st Branch Zone 2 Isolator Tail Pipe 0 75mm Screened Cable Sensor Zone 2 SmartCom no 2 Slave SC3 MZ 230V 50Hz 13A Mains Supply 0 75mm Screene...

Page 11: ...BLUE DELAY TIMER RED BLUE MAINS INPUT EMC FILTER BLUE GREEN YELLOW BLUE Figure 4 c LR internal wiring diagram End Vent Burner EV Figure 4 d LR internal wiring diagram In line Burner IL MAIN RED FLAME...

Page 12: ...ALVE J S T BLUE 1 2 3 4 5 BLUE DELAY TIMER BLUE BROWN GRN YEL N L3 L2 L1 MAINS INPUT A1 A2 C N O N C RELAY RED EMC FILTER Detail shows either N O or N O contacts MAIN GREY GREEN YELLOW RED FLAME SENSO...

Page 13: ...Figure 4 g LR internal wiring diagram End Vent Burner c w 3 way solenoid valve Figure 4 h LR internal wiring diagram End Vent Burner c w valve N O or N C VF Lockout contacts MAIN GREY GRN YEL RED FLA...

Page 14: ...S L2 RC V S D 1 AI1 0V W T3 U T1 V T2 E L 230V 50HZ 1 Pha SUPPLY MAINS ON LAMP FAN HEALTHY LAMP TO FAN tW tU tV Blue N t1 t2 Brown Fan Trip Circuit A1 A2 t3 t4 11 12 Brown Brown 3 2 1 E E Circuit VF E...

Page 15: ...ge switching inputs to be normally open closed circuit to enable Connect to B0 B1 for remote ON ie BMS time control Connect to B0 B2 for remote OFF ie door interlock remote frost etc The power supply...

Page 16: ...sor The power supply is non isolated therefore all wiring to the control must be mains rated Black Bulb Sensor Note Connection to the burners MUST be made via a 3A fused spur FUSE RATING 41 40 9 5 1 L...

Page 17: ...ON REMOTE OFF LIVE NEUTRAL NOTES REMOTE SENSOR s may be placed at a max distance of 100m from the control unit using screened 6A mains cable Wiring should be kept separate from mains wiring to minimi...

Page 18: ...within Engineers functions for remote sensor The power supply is non isolated therefore all wiring to the control must be mains rated Low Voltage 15V DC Black Bulb Sensor FAN CIRCUIT FAN CIRCUIT Burn...

Page 19: ...ided See BS6896 section 5 2 2 2 2 1 1 8 Exhaust and Air Inlet Options 1 8 1 Horizontal discharge Considerations The vacuum fan must be located as shown in the layout drawing The vacuum fan must have a...

Page 20: ...er duct the main air supply header which is feeding the individual branch ducts and burner end vent supply ducts must have a maximum pressure drop of 0 25 mbar 0 1in wg All joints and seams in the air...

Page 21: ...52 152 152 F 50 97 50 50 G 150 150 150 148 H 295 318 340 380 J 80 90 90 110 K 150 140 140 120 L 240 240 240 240 M 309 303 341 404 N 50 62 157 157 P 421 463 616 680 R crs 318 318 318 318 S crs 356 356...

Page 22: ...100321 L100320 L100314 L100316 L100318 Gas Category II Heat input Gross kW 12 18 24 32 38 46 Gas consum rate Nat Gas G25 m h 1 33 1 99 2 66 3 55 4 21 5 10 Max Inlet pressure Nat Gas G25 mbar 50 Min In...

Page 23: ...2 L100321 L100320 L100314 L100316 L100318 Gas Category III Heat input Gross kW 12 18 24 32 38 46 Gas consum rate Propane G31 m h 0 45 0 68 0 90 1 21 1 43 1 73 Max Inlet pressure Propane G31 mbar 57 5...

Page 24: ...e Part No L104102 L104101 L104100 L104093 L104092 n a Burner Type Table 6 Heater Noise Data 12LR 18LR 24LR 32LR 38LR 46LR Noise level 3m below In Line BURNER db A tba tba 37 tba tba tba NR 2 tba tba 3...

Page 25: ...8 60 Noise level 3m below in acoustic enclosure db A 51 53 55 58 NR 2 45 47 49 52 Flue horizontal vertical 3m db A 69 72 75 77 NR 2 63 66 69 71 db A 56 57 58 58 NR 2 50 51 52 52 Flue horizontal vertic...

Page 26: ...Notes...

Page 27: ...Notes...

Page 28: ...hed off for periods in excess of one week it is highly recommended that both the gas and the electrical supplies are turned off 2 3 Routine Maintenance between Service Intervals After ensuring that th...

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