Worcester ZWBR 7-28 HE plus User Manual

6 720 610 597 GB (01.07)
Details of the appliance
9
1.9 Technical data
Units
ZWBR 7-28
Natural gas
ZWBR 11-28
Propane
ZWBR 11-35
Natural gas
ZWBR 14-35
Propane
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
kW
kW
kW
30.1
29.8
28.2
30.1
29.8
28.2
37.5
37.1
35.1
37.5
37.1
35.1
Max. rated heat input net kW 28.5 28.5 35.5 35.5
Min. rated heat output net 40/30 °C
Min. rated heat output net 50/30 °C
Min. rated heat output net 80/60 °C
kW
kW
kW
8.4
8.3
7.4
11.6
11.4
10.5
12.9
12.8
11.4
16.2
16.1
14.3
Min. rated heat input net kW 7.6 10.8 11.8 14.8
Max. rated heat output net, domestic hot water kW 28.2 28.2 35.1 35.1
Max. rated heat input net, domestic hot water kW 28.5 28.5 35.5 35.5
Maximum gas flow rate – After 10 minutes from lighting
Natural gas G20 (H
iB
= 9,5 kWh/m
3
)m
3
/h 3.0 3.7
LPG (H
i
= 12,8 kWh/kg) kg/h 2.2 2.5
Gas supply pressure
Natural gas G20 mbar 20 - 20 -
LPG mbar - 37 - 37
Expansion vessel
Charge pressure bar 0.75 0.75 0.75 0.75
Total capacity l 18 18 10 10
Hot water specifications
Hot water flow rate (factory setting) l/min 8 8 8 8
Max. hot water flow rate l/min 14 14 14 14
Outlet temperature range °C 40 - 60 40 - 60 40 - 60 40 - 60
Max. permissible water supply pressure bar 10 10 10 10
Min. inlet pressure bar 0.2 0.2 0.2 0.2
Specific flow rate l/min 13.7 13.7 16.0 16.0
Flue
Flue gas temp. 80/60 °C, rated/min. load °C 67/55 67/55 87/58 87/58
Flue gas temp. 40/30 °C, rated/min. load °C 43/32 43/32 65/43 65/43
Residual delivery pressure
(inc. pressure drop in air intake duct) Pa 80 80 100 100
CO
2
level at max. rated heat output
CO
2
level at min. rated heat output
%
%
9.5
9.2
11.3
11.0
9.2
9.2
11.0
11.0
NO
x
-class 5 5 5 5
SEDBUK figure, Band A % 90.6 90.6 90.3 90.3
Condensate
Max. condensation rate (t
R
= 30 °C) l/h 2.4 2.4 3.0 3.0
pH-value, approx. 4.8 4.8 4.8 4.8
General Data
Electrical power supply voltage AC ... V 230 230 230 230
Frequency Hz 50 50 50 50
Max. power consumption W 121 121 151 151
Noise output level dB(A) 37 37 40 340
Appliance protection rating IP X4D X4D X4D X4D
Max. CH flow temperature °C nom. 90 nom. 90 nom. 90 nom. 90
Max. permissible operating pressure (CH) bar 2.5 2.5 2.5 2.5
Permissible ambient temperatures °C 0 - 60 0 - 60 0 - 60 0 - 60
Nominal capacity of appliance l 3.75 3.75 3.75 3.75
Weight kg 53 53 53 53
Table 2

Worcester ZWBR 7-28 HE plus Specifications

General

Brand	Worcester
Model	ZWBR 7-28 HE plus
Category	Boiler
Language	English