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TECHNICAL DATA
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32
8 716 113 389b (09/07)
5
TECHNICAL DATA
Central Heating
Primary water capacity (total) litres
Maximum static head metres
Minimum static head metres
Available pump head (20°C difference) at max. output metres water
Max. permissible sealed system operating pressure bar
in accordance with WRAS guidelines
Flow restrictor colour
Domestic Hot Water
Optimum flow rate (±15%) litres/min
Minimum inlet pressure (dynamic) for optimum flow rate bar
Maximum hot water rise for 90 litres draw off (@optimum flow rate) °C
Flue
Exit flue gas mass flow kg/hr
Pipework connections
Fuel line (compression) mm
CH flow mm
CH return mm
Water main inlet mm
DHW outlet mm
Open vent (optional) BSP
CH drain/optional feed and expansion BSP
Condensate (polypropylene) mm
Electrical
Electrical power supply voltage AC...V
Frequency Hz
Max. power consumption W
Thermostats
CH control thermostat range (cut in/cut out) °C
DHW control thermostat range (cut in/cut out) °C
CH & DHW control thermostat differential °C
Boiler high limit thermostat set point °C
Boiler manual reset overheat thermostat set point °C
Flue reset overheat thermostat set point °C
General Data
Maximum hearth temperature °C
SEDBUK (Band A) %
Appliance protection rating IP
Weight (excluding packaging) kg
Emissions class for NOx and CO class
Typical NOx emissions figure mg/kW hr
DESCRIPTION UNITS 12/18 18/25 25/32
APPLIANCE
INFORMATION
69
30
1
4.7
2.5
Lime
15
1.5
40
29
10
22
22
15
22
1
3
/
4
21.5
230
50
240
55/81
55/72
5
92
105
110
<100
90.2
45
195
3
75
69
30
1
4.0
2.5
—
18
1.2
40
40
10
22
22
15
22
1
3
/
4
21.5
230
50
240
55/81
55/72
5
92
105
110
<100
90.1
45
195
3
70
72
30
1
4.2
2.5
—
22
0.9
40
51
10
28
28
15
22
1
3
/
4
21.5
230
50
263
55/81
55/72
5
92
105
110
<100
90.3
45
206
3
75