Technical data

WALL-HUNG GAS COMBINATION BOILER
ROOM SEALED COMBUSTION CHAMBER
MICROGENUS II
24 MFFI 28 MFFI 31 MFFI
MICROGENUS II 28 MFFI
MICROGENUS II 24 MFFI
Ø 3/4” BSP
Ø 3/4” BSP
Ø 1/2” BSP
Ø 1/2” BSP
Ø 3/4” BSP
Ø 3/4” BSP
Ø 1/2” BSP
Ø 1/2” BSP
Ø 3/4” BSP
Ø 3/4” BSP
F1 60/100
F2 80/80
F1 60/100
F2 80/80
A
Central heating flow
B
Domestic hot water outlet
D
Domestic hot water inlet
E
Central heating return
F
Flue (Ø mm)
C
Gas inlet
CLEARANCE DIMENSIONS - PIPE FITTINGS - EXHAUST OUTLETS
Twin pipe exhaustCoaxial exhaust
Electronic IgnitionFully modulatingAutomatic
By-pass
P.C.B. with
microprocessor
IPX4DAnti-frost
device
1
2
3
4
0
bar
Insufficient system
pressure shutdown
Integral
auto-diagnostics
D.H.W temp
adjustment
Anti-scale device
D.H.W. plate heat
exchanger
Combustion
analysis device
High head
pump
MICROGENUS II 31 MFFI
F1 60/100
F2 80/80
Ø 3/4” BSP Ø 1/2” BSPØ 3/4” BSPØ 1/2” BSPØ 3/4” BSP
• Compact dimensions (300x400x700
mm)
• Available in 3 outputs of 24.6 kW -
83,900 Btu/h, 28.1 kW - 95,800 Btu/h
or 31.0 kW - 105,800 Btu/h
• Fully modulating in C.H./D.H.W. with
an accuracy to ± 1°C
• Auto-diagnostic system and
integrated control in P.C.B.
• Government Standard Assessment
Procedure (SAP) efficiency rating up
to 80.3%
• Comfort switch (pre-heat function)
guaranteeing hot water at the outlet
in less than 5 seconds
• High D.H.W. flow rates up to 12.7
l/min (2.8 gal/min) (31kW - 105,800
Btu/h version)
• Anti-frost device
• Anti-scale devices
• Anti seizing device for the pump
• Built-in automatic by-pass
• Built-in mechanical time clock
• Coaxial flue system up to 4 m, twin
pipe flue system up to 30 m
• Split exhaust and intake pipes for
built-in combustion analysis
• Optional outdoor sensor: regulates
the heating temperature automatically
• D.H.W. stainless steel plate heat
exchanger guaranteed for 5 years
• 2 year manufacturer's guarantee
• Guarantee extendable up to 5 years
C.H temp
adjustment
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com
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