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Boiler Comparison Table
Condensing Boilers
Technical Details
Boiler Model
CSI 85 (T)
Condensing boiler
CSI 85 AAA (T)
Condensing boiler 		CSI 85 AAA (T) 780 Condensing boiler
NEW PRODUCT		 CSI 120 (T) Low NOx
Condensing boiler
Boiler Type
Combi boiler
Combi boiler
Combi boiler
Combi boiler
 
Please Note (T) = Timer
House type suitability
1 Bed, 2-3 + beds
1 Bed, 2-3 + beds
1 Bed, 2-3 + beds
1 Bed, 2-3 + beds
SEDBUK Value % band Nat Gas
88% Band B
90.1 % Band A
90.1 % Band A
90.6 % Band A
SEDBUK Value % band LPG
90% Band A
92.6% Band A
92.6% Band A
92.2% Band A
DHW Flow rate @ 35 rise
11.2 I/min
11.8I/min
10.5I/min
13.2 I/min
Domestic hot water output
11.4 - 25.6 kW
12.3 - 29.0 kW
11.4 - 25.7 kW
5.0 - 32.2 kW
Central heating output
11.4 - 24.8 kW
12.3 - 23.9 kW
11.4 - 22.3 kW
5.7 - 29.0 kW
Heating flow & return connections
22mm
Compression
22mm
Compression
22mm
Compression
22mm
Compression
Hot/Cold water connections
15mm
Compression
15mm
Compression
15mm
Compression
15mm
Compression
Dimensions H x W x D
850 x 450 x 360
850 x 450 x 360
770 x 450 x 310
700 x 400 x 300
Condensate connection
22mm/ ¾ plastic pipe
22mm/ ¾ plastic pipe
22mm/ ¾ plastic pipe
22mm/ ¾ plastic pipe
Gas connection
15mm
Compression
15mm
Compression
15mm
Compression
15mm
Compression
Max horizontal flue (100mm)
2.5 Metre
2.5 Metre
2.5 Metre
8.0 Metre
Max vertical flue (100mm)
4.1 Metre
4.1 Metre
4.1 Metre
13.0 Metre
Max horizontal flue (125mm)
9.0 Metre
9.0 Metre
9.0 Metre
23.0 Metre
Max vertical flue (125mm)
12.0 Metres
12.0 Metres
12.0 Metres
26.0 Metre
Pressure relief valve
15mm
15mm
15mm
15mm
Max domestic water inlet pressure
10 Bar
10 Bar
10 Bar
10 Bar
Min domestic water inlet pressure to operate appliance
0.5 Bar
0.5 Bar
0.2 Bar
0.2 Bar
Min domestic water inlet pressure for maximum DHW rate
1.2 Bar
1.2 Bar
1.2 Bar
1.2 Bar
Concealed pipe work jig (optional)
Yes
Yes
Yes
Yes
Built in 7 day digital timer
Yes
Yes
Yes
Yes
Solar compatible
No
No
Yes
Yes
Warranty
1 Year

More Condensing Boiler Models
Boiler Comparison Table
Condensing Boilers
Technical Details
Boiler Model CSI 150 (T) Low NOx Condensing boiler CSI 120 (T) Low Nox Combiplus CSI 150 (T) Low Nox Combiplus CSI Primary AAA Condensing Boiler
Boiler Type
Combi boiler
Combi boiler
Combi boiler
Regular boiler
 
Please Note (T) = Timer
House type suitability
2-4 Beds +
1-4 + Beds
1-4 + Beds
1-4 + Beds 
SEDBUK Value % band Nat Gas
90.6% Band A+
90.6% Band A+
90.6% Band A+
90.2% Band A
SEDBUK Value % band LPG
92.7% Band A
92.7% Band A+
92.7% Band A+
91.2% Band A
DHW Flow rate @ 35 rise
17.3 I/min
16.0 I/min
21.0 I/min
N/A
Domestic hot water output
7.9 - 42 kW 
5.7 - 32.2 kW
7.9 - 42kW
N/A
Central heating output
7.9 - 36kW  
5.0 - 29kW 
7.9 - 35.5kW 
11.4 - 24.8kW
Heating flow & return connections
22mm Compression  
22mm
Compression 
22mm
Compression 
22mm
Compression 
Hot/Cold water connections
15mm Compression 
15mm
Compression 
15mm
Compression 
N/A
Dimensions H x W x D
700 x 400 x 300 
970 x 400 x 320 
970 x 400 x 320 
740 x 450 x 300 
Condensate connection
22mm/ ¾ plastic pipe 
22mm/ ¾ plastic pipe 
22mm/ ¾ plastic pipe 
22mm/ ¾ plastic
pipe
Gas connection
15mm Compression
15mm
Compression
15mm
Compression
15mm
Compression
Max horizontal flue (100mm)
8.0 Metre
6.5 Metre  
6.5 Metre  
2.5 Metre  
Max vertical flue (100mm)
13.0 Metre
11.5 Metre
11.5 Metre  
3.1 Metre
Max horizontal flue (125mm)
23.0 Metre 
21.5 Metre  
22.0 Metre  
9.0 Metre  
Max vertical flue (125mm)
26.0 Metres  
25.0 Metres  
25.0 Metres
12.0 Metres
Pressure relief valve
15mm Compression  
15mm
Compression 
15mm
Compression 
15mm
Compression 
Max domestic water inlet pressure
10 Bar  
10 Bar  
10 Bar  
N/A 
Min domestic water inlet pressure to operate appliance
0.2 Bar
0.2 Bar  
0.2 Bar
N/A
Min domestic water inlet pressure for maximum DHW rate
1.2 Bar
1.2 Bar  
1.2 Bar
N/A
Concealed pipe work jig (optional)
Yes 
Yes  
Yes 
Yes  
Built in 7 day digital timer
Yes  
Yes 
Yes  
No 
Solar compatible
Yes  
Yes  
Yes 
Yes  
Warranty

More Condensing Boiler Models
 
Boiler Comparison Table
Condensing Boilers
Technical Details
Boiler Model
120 Combistore (T) Low NOx Complete with 14 litre S/S Tank
150 Combistore (T) Low NOx Complete with 14 litre S/S Tank
CSI System
AAA (T)
Condensing boiler
CSI System
AAA 780 (T)
Condensing boiler NEW PRODUCT
Boiler Type
Combi boiler
Combi boiler
System boiler
System boiler
 
Please Note (T) = Timer
House type suitability
2-4 Beds +
2-4 Beds + 
1-4 Beds +
1-4 Beds +
SEDBUK Value % band Nat Gas
90.6% Band A ++
90.6% Band A ++
90.2% Band A 
90.2% Band A 
SEDBUK Value % band LPG
92.7 Band A++ 
90.7 Band A++ 
92.7 Band A 
92.7 Band A
DHW Flow rate @ 35 rise
16.3 I/min  
21.3 I/min   
N/A 
N/A
Domestic hot water output
5.7 - 32.2kW 
7.9 - 42kW 
N/A
N/A
Central heating output
5 - 32.2 kW 
7.5 - 35.5 kW 
N/A
N/A 
Heating flow & return connections
22mm
Compression  
22mm
Compression  
22mm
Compression
22mm
Compression  
Hot/Cold water connections
15mm
Compression  
15mm
Compression  
15mm
Compression  
15mm
Compression  
Dimensions H x W x D
970 x 400 x 320 
970 x 400 x 320  
850 x 450 x 360 
770 x 450 x 310 
Condensate connection
22mm/ ¾ plastic pipe 
22mm/ ¾ plastic pipe 
22mm/ ¾ plastic pipe 
22mm/ ¾ plastic pipe 
Gas connection
15mm
Compression  
15mm
Compression  
15mm
Compression  
15mm
Compression
Max horizontal flue (100mm)
6.5 Metre  
6.5 Metre   
 2.5 Metre
2.5 Metre  
Max vertical flue (100mm)
11.5 Metre  
11.5 Metre  
3.1 Metre 
3.1 Metre  
Max horizontal flue (125mm)
22.0 Metre  
22.0 Metre  
9.0 Metre  
9.0 Metre  
Max vertical flue (125mm)
25.0 Metre  
 25.0 Metre  
12.0 Metre  
12.0 Metre  
Pressure relief valve
15mm
Compression
15mm
Compression 
15mm
Compression 
15mm
Compression
Max domestic water inlet pressure
10 Bar  
10 Bar   
N/A 
N/A
Min domestic water inlet pressure to operate appliance
0.2 Bar  
 0.2 Bar
N/A 
 N/A
Min domestic water inlet pressure for maximum DHW rate
1.2 Bar
1.2 Bar 
 N/A
 N/A
Concealed pipe work jig (optional)
Yes 
Yes
Yes
Yes 
Built in 7 day digital timer
Yes 
Yes 
Yes 
Yes 
Solar compatible
Yes 
Yes 
Yes
Yes
Warranty

More Condensing Boiler Models
Boiler Comparison Table
Condensing Boilers
Technical Details
Boiler Model
CSI 85 B (T) 780 Series Condensing boiler
NEW PRODUCT
  
Boiler Type
Combi boiler
  

 
Please Note (T) = Timer
House type suitability
1 bed, 2-3 + beds 
SEDBUK Value % band Nat Gas
88% Band B 
SEDBUK Value % band LPG
90% Band A 
DHW Flow rate @ 35 rise
10.51 I/min
Domestic hot water output
11.4 - 25 kW
Central heating output
11.4 - 24.8 kW 
Heating flow & return connections
22mm Compression
Hot/Cold water connections
15mm Compression  
Dimensions H x W x D
770 x 450 x 310 
Condensate connection
22mm/ ¾ plastic pipe 
Gas connection
15mm Compression 
Max horizontal flue (100mm)
2.5 Metre  
Max vertical flue (100mm)
4.1 Metre  
Max horizontal flue (125mm)
9.0 Metre  
Max vertical flue (125mm)
12.0 Metre
Pressure relief valve
15mm Compression 
Max domestic water inlet pressure
10 Bar  
Min domestic water inlet pressure to operate appliance
0.2 Bar  
Min domestic water inlet pressure for maximum DHW rate
1.2 Bar
Concealed pipe work jig (optional)
Yes
Built in 7 day digital timer
Yes
Solar compatible
Yes
Warranty
1 Year  

More Non Condensing Boiler Models		  
More Condensing Boiler Models

NON CONDENSING BOILER RANGE

The LS80, LS100 and RSF84 are Band D standard efficiency non-condensing boilers, and are intended only for export or very small flats within the UK. The RSF84 is approved for SE & U duct high rise flats or apartment applications in the UK only.

Boiler Comparison Table
Non Condensing Boilers
Technical Details
Boiler Model
LS80 (T) White Star/Silver Star
LS100 (T) White Star/Silver Star
RSF 84 /100 (T)
Boiler Type
Non Condensing
Non Condensing
Non Condensing
 
Please Note (T) = Timer
House type suitability
1-3 Beds +
1-3 Beds + 
1-3 Beds + 
SEDBUK Value % band Nat Gas
79.6% Band D
79.6% Band D 
78.9% Band D 
SEDBUK Value % band LPG
81.9% Band D 
81.9% Band D  
81.0% Band D 
DHW Flow rate @ 35° rise
9.9 I/min
11.9 I/min 
10.1 I/min 
Domestic hot water output
24.1 kW
29 kW  
24.5 kW
Central heating output
24.1 kW  
29 kW 
29 kW 
Heating flow & return connections
22mm
Compression
22mm
Compression
22mm
Compression
Hot/Cold water connections
15mm
Compression
15mm
Compression 
15mm
Compression
Dimensions H x W x D
700 x 400 x 300 
 700 x 400 x 300
850 x 450 x 360 
Condensate connection
N/A 
N/A  
N/A  
Gas connection
15mm
Compression 
15mm
Compression 
15mm
Compression
Max horizontal flue (100mm)
3.5 Metre
3.5 Metre 
3.5 Metre 
Max vertical flue (100mm)
4.6 Metre
4.6 Metre
3.5 Metre 
Max horizontal flue (125mm)
15.0 Metre  
15.0 Metre   
N/A 
Max vertical flue (125mm)
16.0 Metre
16.0 Metre
N/A
Pressure relief valve
15mm
Compression  
15mm
Compression 
15mm
Compression  
Max domestic water inlet pressure
10 Bar  
10 Bar  
10 Bar  
Min domestic water inlet pressure to operate appliance
0.5 Bar  
 0.5 Bar
0.5 Bar  
Min domestic water inlet pressure for maximum DHW rate
12 Bar
12 Bar 
12 Bar 
Concealed pipe work jig (optional)
Yes 
Yes  
Yes  
Built in 7 day digital timer
Yes 
Yes  
Yes 
Solar compatible
No 
No
No
Warranty
1 Year
1 Year  
1 Year

 
 
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