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
A
PPL
IA
N
C
E
INF
O
RM
A
T
IO
N
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
