page no. 6 of 68
LX Range Users, Installation & Servicing Instructions Doc Ref M110 issue 1.0 Dec 2020.
Model 15 20 25 30 35 40 50 60 70 90 120 140
Output (nominal)
High Fire (max)
kW 15.0 20.5 25.3 30.1 34.9 39.9 49.1 59.1 69.8 88.4 119.2 138.3
Low Fire (min)
kW 8.5 10.5 11.7 16.1 16.1 19.8 23.8 29.9 34.0 41.2 67.7 72.7
Input (nett CV)
High Fire (max)
kW 16.2 22.2 27.4 32.1 35.8 43.1 53.6 64.2 75.3 94.9 127.0 147.5
Low Fire (min) kW 8.9 11.0 12.2 16.5 16.8 20.5 25.1 31.9 35.1 43.6 70.1 75.0
NOx Seasonal (Gross) mg/kWh 63.8 60.0 51.7 59.0 66.8 44.4 48.3 60.2 53.9 38.7 66.8 61.2
Seasonal Space Heating Energy Eff.
% hs,h
78.2 78.9 79.5 80.7 80.5 80.1 79.2 79.0 80.5 79.8 79.6 80.0
Airflow
Volume
LX F & V & C m
3
/s 0.39 0.56 0.78 0.97 1.11 1.18 1.51 1.83 1.94 2.81 3.56 3.75
LX D
Min m
3
/s 0.39 0.56 0.78 0.97 1.11 1.18 1.51 1.83 1.94 2.81 3.56 3.75
Max m
3
/s 0.46 0.62 0.86 1.07 1.22 1.30 1.67 2.02 2.14 3.09 3.91 4.13
Airflow
Throw LX F m 10.0 14.0 20.0 25.0 28.0 30.0 35.0 38.0 42.0 44.0 45.0 45.0
Fan
Static
LX C Pa 220 320 220 220 200 150 250 250 250 180 290 250
Electrics
Supply
Standard V/ph/Hz 230/1/50
Optional* V/ph/Hz 400/3/50 *on Centrifugal Units Only. 3Ph units shown in brackets ()
LX F
Run amp 0.9 1.0 1.0 1.2 1.7 1.3 1.8 2.5 2.4 3.2 46 4.7
Start amp 1.9 2.0 2.0 2.4 4.0 2.7 4.0 5.0 4.0 6.0 8.0 8.0
LX C
Run amp 2.0 3.1 4.2 4.3 4.7 5.8 7.6 10(4.8) 11(5.3) 12.8 17(4.6) 20(4.9)
Start amp 5.0 8.5 13.3 14.0 15.6 18.0 26.3 29(16.5) 38(18) 31.0 40(14.9) 44(16.8)
Fuel
Connection BSP/Rc ¾" 1"
Nominal Inlet
Pressure
Nat Gas mbar 20.0
LPG mbar 37.0
Consumption
Nat Gas m
3
/h 1.71 2.35 2.90 3.40 3.79 4.56 5.67 6.79 7.96 10.04 13.44 15.61
LPG m
3
/h 0.66 0.91 1.12 1.31 1.46 1.76 2.19 2.63 3.08 3.88 5.20 6.03
Mounting
Height
LX F & Duo
Crossflow
Min m 2.5 3.0
Max m 3.0 3.5 5.0
LX V
Downflow
Min m 2.5 4.0 5.0 6.0
Max m
3.0 6.0 7.0 8.0 10.0 12.0
Overall
Dims
LX F
Height mm 450 500 570 670 532 720 684 760 912 810 975 1140
Width mm 997 997 997 997 1325 997 1325 1325 1325 1950 1950 1950
Depth mm 859 869 819 834 918 834 938 915 915 938 915 915
Install
Clearance
All
Top mm
200
LH Side mm 200
RH Side mm 1000
Rear mm 400
Flue
Diameter mm Ø 80 80 80 100 100 100 100 130 130 130 130 130
Max
Length
Flue Only m 12
Room Sealed m 6
Combustion Air Spigot mm Ø 80 80 80 100 100 100 100 130 130 130 130 130
Noise Levels
LX F dB(A) 48 47 47 47 50 58 59 59 60 63 64 64
LX C dB(A) 55 55 54 54 60 60 60 62 62 66 67 67
Nett Weight
LX F kg 59.5 73.0 76.5 81 84.0 103 122 135 149 202 238 286
LX C kg 71.0 83.6 86.4 94 108 122 143 170 213 329 364 430
Model 15 20 25 30 35 40 50 60 70 90 120 140
Notes:
Fuel Consumption and input figures based upon nett calorific values as
follows: -
Natural Gas (G20) nett CV 34.02 MJ/m
3
- Propane (G31) nett CV 88.00
MJ/m
3
• Heaters have efficiency levels which meet with the minimum
heater efficiency requirements of UK Part L Building Regulations.
• LX heaters comply with the seasonal efficiency and NOx limits
requirements of the Ecodesign regulation (EU) 2015/1188,
Directive 2009/125/EC – Lot 21 Tier 2 (ErP)
• Air handling data is assessed at room ambient conditions
• Throw figures provide the distance to the point where the terminal
velocity degrades to 0.25m/s
• Dimensions in the table above refer to LX F units only - for data
on all other models refer to the dimensions page and/or the
installation instructions.
• Noise levels are applicable to standard LX F, LX V and LX C models
and are measured 5m from appliance in a free field.
• Motor kW, run and start amps apply to standard electrical supply as
stated. For optional data contact sales office.
• Optional 3 phase direct drive centrifugal blowers shown in italics
within brackets().
• Connection of combustion air duct is not required for ‘flue only’
applications.
• It is the responsibility of the installing contractor to ensure that
ductwork is correctly sized and balanced when installing LX C
Centrifugal units.
Technical Specification
LX
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