Notes:
* Additional external pipework and fittings may affect the resistance and must be taken into
account on installation.
**
The nominal burner pressure should be 12.5 mbar and will only be obtained if the
appliance inlet pressure is correct at 20 mbar even when the appliance is running at full
heat input. The meter should be capable of passing 1 00ft
3
/h of natural gas plus the
requirements of any other gas appliances.
MINIMUM CLEARANCES
For ease of servicing, allow as much clearance as possible below the appliance.
If the appliance is to be installed in a cupboard, the ventilation openings in the cupboard
must NOT be blocked. DO NOT USE THE CUPBOARD FOR STORAGE.
Pilot injector
0.27mm marking A
Nominal burner pressure ** (maximum input)
12.5 mbar (5 in. w.g.)
Connections
- Gas
15mm Copper Tail
15mm Compression
- Water
Balanced flues (telescopic) Wall thickness
available
100mm - 150mm (4in - 6in) - Part No 31/1
0321
150mm - 230mm (6in - 9in) - Part No 31/1
0322
230mm - 380mm (9in - 15in) - Part No 31/1
0323
380mm - 610mm (15in - 24in) - Part No
0324
Flue Terminal Guard (Optional)
Part No 10/1 0262
Above
60mm
Below
75mm
Sides
5mm (Each)
Front
220mm (To allow for removal of outer
case)
Page 4 of 35
Mersey Super - Installation & Service Instructions
09/12/2009
file://P:\System\DATA\Dx\DS1\installation\2551\I24-2551\I24-2551.htm