5
5.3 systeMPaC CondensIng BoIler - teCHnICal detaIls
31
Heat Output
kW
26
35
cOnnectiOnS
-
-
Heating Flow
22 mm dia.
28 mm dia.
Heating Return
1” BSP
1” BSP
Mains Cold Feed (Copper)
15 mm dia.
15 mm dia.
Drain Off Valve
½” BSP
½” BSP
Safety Pressure Valve Outlet (Copper)
15 mm dia.
15 mm dia.
Condensate Trap
22 mm dia. plastic pipe
22 mm dia. plastic pipe
circulatinG pump
25/60
25/60
Integral Expansion Vessel Normal
Capacity
12 litres
12 litres
Expansion Vessel Pre-charge Pressure
1 bar
1 bar
Low Pressure Water Switch?
✔
✔
Filling Loop Included?
✔
✔
Water cOntent
-
-
Boiler
24 litres
24 litres
Flue (indOOr BOilerS)
-
-
Balanced Flue Assembly
125 (5”) mm dia.
125 (5”) mm dia.
Max. Low Level Flue Length
1.5m
1.5m
Max. High Level Balanced Flue Length
6m
6m
HeatinG SyStem (Sealed)
Fit in accordance with BS 7074 Part 1, BS 5449, OFTEC standards and all other relevant legislation.
Max. Operating Pressure
2 bar
2 bar
Max. System Pressure Cold
1.5 bar
1.5 bar
Min. System Pressure Cold
0.5 bar
0.5 bar
Preset Pressure Relief Valve
3 bar
3 bar
Water Side reSiStance
Flow rate to Give a nominal Output
at 10K differential
26kW
35kW
Flow Rate Measured
2135 kg/h
2874 kg/h
Waterside Resistance
0.18 mbar
0.18 mbar
Flow rate to Give a nominal Output
at 20K differential
26kW
35kW
Flow Rate Measured
1131 kg/h
1523 kg/h
Waterside Resistance
0.19 mbar
0.19 mbar