Worcester 50/70 Installation And Servicing Instructions page 3

Table 1
Model
POWER SUPPLY
HEATING FLOW
HEATING RETURN
FUEL LINE
CONVENTIONAL FLUE DIAMETER
MINIMUM FLUE REQUIREMENT
HEARTH TEMPERATURE
MAXIMUM STATIC HEAD
PRIMARY WATER CAPACITY
WEIGHT
BURNER
WATER SIDE RESISTANCE
WATER SIDE RESISTANCE
EXIT FLUE GAS MASS FLOW
CONTROL THERMOSTAT RANGE
CONTROL THERMOSTAT DIFFERENTIAL
HIGH LIMIT THERMOSTAT SET POINT
MANUAL RESET OVERHEAT THERMOSTAT
50/70 Table 2. Electro Oil Inter B9B Burner (See Fig. 13)
Fuel Nozzle
28 Sec. Kerosene 0.50 60°ES
28 Sec. Kerosene 0.55 80°EH
28 Sec. Kerosene 0.60 60°ES
35 Sec. Gas Oil* 0.50 80°S
70/90 Table 3. Electro Oil Inter B11C Burner (See Fig. 14)
Fuel Nozzle
28 Sec. Kerosene 0.60 80°EH
28 Sec. Kerosene 0.75 80°EH
28 Sec. Kerosene 0.75 80°EH
35 Sec. Gas Oil* 0.60 80°S
35 Sec. Gas Oil* 0.60 80°S
90/110Table 4. Electro Oil Sterling 40 Burner (See Fig. 15)
Fuel Nozzle
28 Sec. Kerosene 0.85 80°EH
28 Sec. Kerosene 0.85 80°EH
28 Sec. Kerosene 1.00 80°EH
35 Sec. Gas Oil* 0.50 80°H
35 Sec. Gas Oil* 0.55 80°H
35 Sec. Gas Oil* 0.55 80°H
* NOTE: For use on conventional flue only.
** NOTE: The flue gas temperature is measured in the gas sampling hole on the flue outlet plate. The probe should be inserted to a depth of 50mm and angled towards the flue outlet. The temper-
ature measured is not an absolute flue gas temperature and is for general guidance purposes only!
NOTE: The pump pressure given is for general guidance only as variations in nozzle output can be up to ± 15%. It is, therefore, essential that the air is adjusted to give the correct CO
NOTE: The nozzle type used on 28 Sec. Kerosene outputs are nozzles calibrated specifically for use with 28 Sec. Kerosene which gives less variation in nozzle output than the standard 35 Sec.
Gas Oil nozzles. However, if a 28 Sec. Kerosene nozzle is not available at servicing or commissioning it is appropriate to install a 35 Sec. Gas Oil nozzle providing the output, spray angle and
pattern of the nozzle is the same as the 28 Sec. Kerosene nozzle (e.g. 0.75 80°EH may be replaced with a 0.75 80°H).
230/240V 50 Hz
1
125 mm (5 in.)
Below 260° C
Below 100°C
30 m (98 ft.)
20 litres (4.4 gal.)
97Kg (214 lbs.)
Electro Oil
Inter B9 B
10°C Difference
20°C Difference
35 kg/hr
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
Pump
Fuel Flow
Pressure
Rate
(p.s.i.)
Kg/h l/h
110 1.40 1.77
100 1.59 2.01
105 1.78 2.25
155 1.80 2.12
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
Pump
Fuel Flow
Pressure
Rate
(p.s.i.)
Kg/h l/h
110 1.87 2.37
115 2.10 2.66
135 2.34 2.96
130 2.13 2.51
160 2.37 2.79
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
Pump
Fuel Flow
Pressure
Rate
(p.s.i.)
Kg/h l/h
110 2.36 2.99
130 2.66 3.37
130 2.95 3.74
260 2.44 2.87
265 2.76 3.25
330 3.06 3.60
SPECIFICATIONS
50/70
230/240V 50 Hz
1 in. BSP
1 in. BSP
/ in. BSP
4
125 mm (5 in.)
Class 2
Below 260° C
Below 100°C
30 m (98 ft.)
23.5 litres (5.2 gal.)
107 Kg (236 lbs.)
8 mbar
6 mbar
55°C minimum Cut In to 82°C maximum Cut Out
100°C +0/-6°C
110°C +0/-6°C
Flue Gas
%CO
Temp.
2
(°C)**
215 10.5
225 10.5
235 11.5
235 11.5
Flue Gas
%CO
Temp.
2
(°C)**
215 10.5
225 10.5
240 11.5
225 11.0
240 11.5
Flue Gas
%CO
Temp.
2
(°C)**
225 11.0-11.5
240 11.0-11.5
245 11.5-12.0
220 11.5-12.0
235 11.5-12.0
240 12.0-12.5
3
70/90
230/240V 50 Hz
1in. BSP
1in. BSP
1
/ in. BSP
4
Class 2
29.1 litres (6.4 gal.)
138 Kg (306 lbs.)
Electro Oil
Inter B11C
18 mbar
12 mbar
46 kg/hr
5°C
Approx.
Air Input
Setting
kW Btu/hr
8.5 17 58,000
8.75 19 65,000
9.0 21.5 73,000
9.0 21.5 73,000
Approx.
Air
Input
Setting
kW Btu/hr
6.0 22.5 77,000
7.0 25 86,000
7.5 28 96,000
7.25 25 86,000
8.0 28 96,000
Approx.
Air
Input
Setting
kW Btu/hr
11 28.5 97,000
12 32 109,000
16 35.5 121,000
9 28.5 97,000
14 32 109,000
16 35.5 121,000
90/110
1
1 / in. BSP
4
1
1 / in. BSP
4
1
/ in. BSP
4
125 mm (5 in.)
Class 2
Below 260° C
Below 100°C
30 m (98 ft.)
Electro Oil
Sterling 40
35 mbar
19 mbar
57 kg/hr
Appliance
Output
kW Btu/hr
15 51,000
17 58,000
19 65,000
19 65,000
Appliance
Output
kW Btu/hr
20 68,000
22.5 77,000
25 85,000
22.5 77,000
25 85,000
Appliance
Output
kW Btu/hr
26 89,000
29 99,000
32 109,000
26 89,000
29 99,000
32 109,000
value.
2