MULTIPOINT BF
Gas Fired Balanced Flue Water Heater
User Operating, Installation
and Servicing Instructions
6 720 607 090 GB (04.10) JS
Please leave these instructions with the user
2 6 720 607 090
Natural Gas
Main Multipoint BF
G.C. No 52-467-01
User Information
Your Main Multipoint BF is designed to meet all relevant
standards.
Main provide a 12 month guarantee on the appliance. The
guarantee operates from the date installation is completed
for the customer who is the original owner.
Any component or part which becomes defective during the
guarantee period as a result of faulty workmanship or
materials whilst in normal use will be repaired or replaced
free of charge.
This appliance conforms to European Standard EN 26.
Type test for purpose certified by Notified Body CE-0087.
Product/Production certified by Notified Body CE-0464.
For GB / IE only.
Care must be taken when lifting and handling this appliance,
seek assistance where appropriate. Protective equipement
(e.g. gloves) should be worn as necessary.
36 720 607 090
1. User’s Operating Instructions .....................................4
2. General Layout ..............................................................5
3. Technical Data ............................................................... 6
4. Dimensions and Fixings ................................................ 7
5. General Information ......................................................8
6. Installation Regulations ................................................8
7. Siting the Appliance .....................................................9
8. Siting the Flue Terminal ............................................ 10
9. Air Supply ..................................................................... 11
10. Gas Supply .................................................................. 11
11. Installation .................................................................... 11
12. Commissioning ............................................................ 13
13. Inspection and Servicing .......................................... 14
14. Replacement of Parts ................................................ 16
15. Fault Finding ................................................................ 18
16. Short Parts List ........................................................... 18
page
Contents
Section
4 6 720 607 090
1. User’s Operating Instructions
Pilot ignition:
1. Depress slide control and hold it in.
2. Press the
igniter repeatedly until the
pilot is alight.
3. Release the slide control approx 10
seconds after pilot lights.
4. Repeat these steps if the pilot does not remain alight.
Burner operation:
When the slide control is in the “burner” position the burner
will ignite when a hot tap is turned on.
Temperature regulation:
Turn left
to reduce
water
temperature
Turn right to
increase
water
temperature
Switching off:
Move slide control to the far left
Note: with higher temperatures the available flow of water
will be reduced.
Note: the pilot flame will extinguish
Note: if the appliance is to be left unused in an unheated
area during cold weather the gas and water supplies should
be isolated and the system drained.
Your installer will be able to advise you.
- Off
- Pilot
- Burner
- Igniter
56 720 607 090
2. General Layout
Fig. 3
Appliance water flow diagram.
Fig. 4
1 Pilot burner
2 Spark electrode
3 Thermocouple
4 Heat exchanger
5 Main burner
6 Burner injector
7a Burner pressure test point
7b Inlet gas pressure test point
8 Gas setting screw
9 Pilot gas filter
10 Pilot gas valve
11 Electromagnetic valve
12 Gas filter
13 Slow ignition valve
14 Venturi
15 Gas inlet pipe
16 Correcting screw for minimum
water flow
17 Temperature control
18 Drain cock
19 Volumetric water governor
20 Cold water pipe (inlet)
21 Hot water pipe (outlet)
22 Water filter
23 Diaphragm
24 Piezo igniter
25 Slide control
26 Pilot gas button
27 Gas valve
28 Main gas valve
29 Pilot gas pipe
30 Temperature limiter
31 Flue hood
32 Water valve
Appliance components
6 6 720 607 090
3. Technical Data
T ABLE 1 - GENERAL
T ABLE 3 - PERFORMANCE
T ABLE 2 - FLUE DET AILS
The appliance has a permanent pilot.
The appliance and flue components are packed in separate
cartons.
The appliance is for use with Natural Gas only.
Maximum cold water supply inlet pressure 12 bar (180 p.s.i.)
Minimum cold water supply inlet pressure to operate the appliance 0.2 bar (2.9 p.s.i.)
Minimum cold water supply inlet pressure for maximum domestic hot water flow 1 bar (15 p.s.i.)
Domestic hot water delivery with temperature control knob fully anticlockwise 4 to 13 litres/minute at
25°C temperature rise
Domestic hot water delivery with temperature control knob fully clockwise 2.5 to 6 litres/minute at
55°C temperature rise
* These values & settings apply when the
appliance has been converted to operate in
conjunction with a Se-duct type flue system.
Natural Gas Se-duct*
Gas category
I
2H
I
2H
Appliance Type
C
11
C
21
Minimum rated output 7 kW 7 kW
Maximum rated output 23 kW 20.7 kW
Rated input (Net) 25.5 kW 23 kW
Gas rate (CV 34 MJ/m
3
)2.9 m
3
/hr 2.6 m3/hr
Inlet pressure 20 mbar 20 mbar
Number of injectors 16 16
Injector diameter 1.05 mm 1.05 mm
Pilot injector marking 5 11
Burner pressure 14.1 mbar 12.5 mbar
Height 846 mm 846 mm
Width 420 mm 420 mm
Depth 285 mm 285 mm
Dry weight 20 kg 20 kg
Gas connection 15mm Copper 15mm Copper
Hot/cold water connections 15mm Copper 15mm Copper
Wall hole size - width 310 mm (3 in.)
Wall hole size - height 300 mm (3 in.)
min. length 100 mm (4 in.)
max. length 150 mm (6 in.)
min. length 150 mm (6 in.)
max. length 230 mm (9 in.)
min. length 230 mm (9 in.)
max. length 380 mm (15 in.)
min. length 380 mm (15 in.)
max. length 610 mm (24 in.)
Sales Code 31/12968 - Se-duct flue kit
Sales Code 31/10321
Sales Code 31/10322
Sales Code 31/10323
Sales Code 31/10324
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