Worcester 28i RSF User Manual

5
GAS SUPPLY SYSTEM
Table 7
CLEARANCES (mm)
INSTALLATION SERVICE
ABOVE APPLIANCE AND/OR FLUE ELBOW 30 30
IN FRONT OF APPLIANCE 600 600
BENEATH APPLIANCE 200 200
RIGHT AND LEFT HAND SIDE 10 10
Table 8
SYSTEM CAPACITY
TOTAL SYSTEM VOLUME litres
INITIAL INITIAL CHARGE PRESSURE bar
PRESSURE bar 0.5 1.0 1.5
1.0 57 75 N/A
1.5 31 42 52
Table 9
PERFORMANCE SPECIFICATIONS
PRIMARY WATER CAPACITY litres 3.0
MAXIMUM MAINS INLET PRESSURE bar 10
MINIMUM MAINS INLET PRESSURE (WORKING) FOR MAXIMUM FLOW bar 0.9
MINIMUM MAINS INLET PRESSURE (WORKING) FOR OPERATION bar 0.1
MAXIMUM CENTRAL HEATING FLOW TEMPERATURE °C 82 (nom)
MAXIMUM CENTRAL HEATING SYSTEM PRESSURE (OPERATING) bar 2.5
MINIMUM CENTRAL HEATING SYSTEM PRESSURE bar 0.5
OUTPUT TO DOMESTIC HOT WATER kw NATURAL GAS (G20) 8.5 - 27.5
OUTPUT TO CENTRAL HEATING kw NATURAL GAS (G20) 10.5 - 27.5
DOMESTIC HOT WATER SPECIFIC RATE - D 30°C RISE l/min 13.1
MAXIMUM DOMESTIC HOT WATER FLOW RATE - 40°C RISE l/min 9.8
NOx CLASSIFICATION Class 2
SEDBUK NUMBER 78.1
SEDBUK BAND D
BURNER INJECTOR mm 4.5
Table 5
Refer to Section 6.
DOMESTIC HOT WATER TEMPERATURE RISE
DISCHARGE RATE l/min 7 8 9 10
TEMPERATURE RISE °C 56 49 44 39
Table 6
Total length of gas supply pipe Pipe size
(metres) (Ømm)
36912
Natural Gas
8.7 5.8 4.6 – 22
18.0 12.0 9.4 – 28
Gas
Discharge
Rate
(m
3
/hr)
Note: Each fitting used in the gas line from the meter is equivalent to a
length of straight pipe which must be added to the straight pipe length
to give total length.
i.e: Bend=0.5 metre, Tee=0.5 metre, 90° Bend=0.3 metre.

Worcester 28i RSF Specifications

General

Brand	Worcester
Model	28i RSF
Category	Boiler
Language	English