Technical Data - Worcester benchmark ZWB 7-25 R 25 HE Design, Installation And Servicing Instructions

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Technical data

Max. rated heat output net 40/30°C central heating
Max. rated heat output net 50/30°C central heating
Max. rated heat output net 80/60°C central heating
Max. rated heat input net
Min. rated heat output net 40/30°C
Min. rated heat output net 50/30°C
Min. rated heat output net 80/60°C
Min. rated heat input net
Max. rated heat output net, domestic hot water
Max. rated heat input net, domestic hot water
Maximum gas flow rate – After 10 minutes from lighting
Natural gas G20 (CVnet 34.02 MJ/m
3
LPG (CVnet 88 MJ/m )
Gas supply pressure
Natural gas G20 (CVnet 34.02 MJ/m
3
LPG (CVnet 88 MJ/m )
Expansion vessel
Charge pressure
Total capacity
Hot water specifications
Hot water flow rate @ 35°C
Outlet temperature range
Max. permissible water supply pressure
Min. inlet pressure for max. flow rate
Specific flow rate
Flue
Flue gas temp. 80/60°C, rated/min. load
Flue gas temp. 40/30°C, rated/min. load
Residual delivery pressure
(inc. pressure drop in air intake duct)
CO level at max. rated heat output
2
CO level at min. rated heat output
2
NO -class
x
SEDBUK figure
Condensate
Max. condensation rate (t
R
pH-value, approx.
General Data
Electrical power supply voltage
Frequency
Max. power consumption
Noise output level
Appliance protection rating with blanking plate fitted
Max. CH flow temperature
Max. permissible operating pressure (CH)
Permissible ambient temperatures
Nominal capacity of appliance
Weight (excluding packaging)
Table 2
6 720 611 441 GB (03.11)
3
)
3
)
= 30°C)
25 HE
Units Natural gas Propane
kW 29.1
kW 28.8
kW 27.2
kW 27.5
kW 8.4
kW 8.3
kW 7.4
kW 7.6
kW 27.2
kW 27.5
3
m /h 2.9
kg/h
mbar 20
mbar
bar 0.75
l 10
l/min 10.24
°C 40 - 60
bar 10
bar 1.2
l/min 12.4
°C 67/55
°C 43/32
Pa 80
% 9.2
% 8.8
5
Band A
l/h 2.3
4.8
AC ... V 230
Hz 50
W 102
dB(A) 36
IP X4D
°C nom. 90 nom. 90
bar 2.5
°C 0 - 50
l 3.75
kg 46
Details of the appliance
25 HE 30 HE
Natural gas
31.2
29.1
30.9
28.8
27.2 29.2
27.5 29.5
8.4
11.6
8.3
11.4
10.5 7.4
10.8 7.6
27.2 29.2
27.5 29.5
3.1
2.0
- 20
37
0.75 0.75
10 10
10.24 13.3
40 - 60 40 - 60
10 10
1.2 1.2
12.4 13.3
67/55 67/55
43/32 43/32
80 80
10.8 9.2
10.5 8.8
5 5
A A
2.3 2.5
4.8 4.8
230 230
50 50
102 107
36 37
X4D X4D
nom. 90
2.5 2.5
0 - 50 0 - 50
3.75 3.75
46 46
30 HE
Propane
31.2
30.9
29.2
29.5
11.6
11.4
10.5
10.8
29.2
29.5
2.3
37
0.75
10
13.3
40 - 60
10
1.2
13.3
67/55
43/32
80
10.8
10.5
5
A
2.5
4.8
230
50
107
37
X4D
nom. 90
2.5
0 - 502
3.75
46
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