5
GAS SUPPLY SYSTEM - BASED ON NG (G20)
TOTAL LENGTH OF GAS SUPPLY PIPE (COPPER) metres
3 6 9 12
GAS DISCHARGE RATE - PRESSURE DROP mbar. m
3
/h PIPE DIAMETER mm
8.7 5.8 4.6 3.9 22
18.0 12.0 9.4 8.0 28
Table 6
CLEARANCES (mm)
INSTALLATION SERVICE
ABOVE APPLIANCE FLUE ELBOW 30 30
IN FRONT OF APPLIANCE 600 600
BENEATH APPLIANCE 200 200
RIGHT AND LEFT HAND SIDE 10 10
Table 7
SYSTEM CAPACITY
TOTAL SYSTEM VOLUME litres
INITIAL INITIAL CHARGE PRESSURE bar
PRESSURE bar 0.5 1.0 1.5
1.0 72 92 N/A
1.5 39 53 64
Table 8
PERFORMANCE SPECIFICATIONS
PRIMARY WATER CAPACITY 2.0 litres
MAXIMUM MAINS INLET PRESSURE 10 bar
MAXIMUM CENTRAL HEATING FLOW TEMPERATURE 85°C (nom)
MAXIMUM CENTRAL HEATING SYSTEM SET PRESSURE 2.5 bar
MINIMUM CENTRAL HEATING SYSTEM SET PRESSURE 0.5 bar
OUTPUT TO CENTRAL HEATING NATURAL GAS (G20) 15SBi 6.0 - 15.0kw 24SBi 15.0 - 24.0kw
LPG - PROPANE (G31) 15SBi 6.0 - 15.0kw 24SBi 15.0 - 24.0kw
NOx CLASSIFICATION FOR BOTH 15 & 24SBi Class 2
SEDBUK Rating 15SBi - Band D - 79.1% 24SBi - Band D - 78.3%
Table 5
Refer to Section 6.
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