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2.
TECHNICAL DATA
NOTE: THE DATA PLATE IS POSITIONED BEHIND THE FRONT PANEL ON TOP OF THE ELECTRICAL COVER
Table 1
NOMINAL BOILER RATINGS (1 0 minutes after lighting)
OUTPUT
INPUT
BURNER SETIING
GAS RATE
PRESSURE
kW
Blu/h
kW
Btu/h
mbar
in_wg
m
3
/h
ft'
/h
8.8
30,000
12 1
41,300
2.5
1 0
1.15
40.7
11
37.500
14.9
50.800
4.0
1.6
1.42
500
13
44.350
17.5
59,700
s 8
23
1_67
58.8
15
51,200
19.9
67,900
7.0
2.8
1.90
66.9
17
58,000
22.5
76,800
9.0
3.6
2 1 s
75 7
19
64,800
24 8
84,600
11.0
44
2 37
83 3
22 9
78,000
29.3
100,000
14.3
57
2.80
98.5
DOMESTIC HOT WATER
22.9
78,000
29 3
100,000
14.0
5.62
2.80
98.5
Note: The Pressure test point
1s
located on the gas valve {See Fig. 1 3 ).
Table 2
SPECIFICATIONS
CENTRAL HEATING FLOW
28
mm
Copper tube
CENTRAL HEATING RETURN
28
mm
Copper tube
COLD WATER MAINS INLET
22
mm
Copper tube
DOMESTIC HOT WATER OUTLET
22
mm
Copper tube
GAS INLET
22
mm
Copper tube
HEIGHT
860 mm (33.9 in
1
WIDTH
685 mm (27 in.)
DEPTH
600 mm (23.6 in.)
WEIGHT (DRY)
1 55 kg (340 lbs.)
PRIMARY CAPACITY
981itres (21.6 galls.)
MAXIMUM STATIC HEAD
25 metres (81 ft)
MINIMUM STATIC HEAD
1
metre
{39
in.)
CIRCULATING PUMPS (2)
Grundfoss UPS 15·60
EXPANSION VESSEL
12\itres charged 0.5 bar
MAXIMUM OUTPUT TO HEATING
22.9 kW (78,000 Btu/h)
OUTPUT TO DOMESTIC HOT WATER
22.9 kW (78,000 Btu/h:
MAXIMUM DOMESTIC HOT WATER FLOW RATE
Nominally 21litres/min.
(4.5 gal/min.)
GAS RATE (after 10 min.)
2.8 m
3
/h (98.52 ft
3
/h)
MAXIMUM CENTRAL HEATING FLOW TEMPERATURE
82°C (180°F)
NOTE. Appliance static head is measured from the top surface of the appliance or the highest point in the heating system to the top of the water
level in the feed and expansion tank. See Fig_ 7
Table 3
AVAILABLE PUMP HEAD
BOILER OUTPUT
HEAD
MINIMUM FLOW RATE
TEMPERATURE RISE
ACROSS HEATING
kW
Btu/h
metres
feet
litres/min
gal/min
FLOW AND RETURN
8.8
30,000
5 1
16.6
11.5
2.5
11
37.500
4.7
1 s s
14.5
3.2
13
44,350
4.3
14.1
17.0
3.8
15
51,200
38
12.6
19.5
4.3
11 °( (20°F)
17
58,000
33
10.9
22 s
49
19
64.800
2.2
7.2
24.8
54
22.9
78,000
1.7
5.5
30.0
6.6
4
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