Worcester GR4700iW C User Manual

Energy consumption
21
Greenstar 4000 – 6 720 891 170 (2020/09)
12 Energy consumption
12.1 Product data on energy consumption
Natural Gas appliance
The following product data comply with the requirements of the EU Regulations No. 811/2013, No. 812/2013, No. 813/2013 and No. 814/2013
supplementing the Regulation (EU) 2017/1369.
Table 10 Product data on energy consumption Greenstar 4000
Product data Symbol Unit 7 733 600 373 7 733 600 371
Product type – – GR4700iW 30 C NG GR4700iW 25 C NG
Condensing boiler – –  
Low temperature boiler – – 
B1 boiler – –  
Co-generation space heater – – 
Equipped with a supplementary heater? – – – –
Combination heater – – 
Rated heat output P
rated
kW 24 24
Seasonal space heating energy efficiency 
s
%94 94
Energy Efficiency Class – – A A
Useful heat output
At rated heat output and high temperature regime
1)
1) High-temperature regime means 60 °C return temperature at heater inlet and 80 °C feed temperature at heater outlet.
P
4
kW 24 24
At 30 % of rated heat output and low temperature regime
2)
2) Low temperature means for condensing boilers 30 °C, for low-temperature boilers 37 °C and for other heaters 50 °C return temperature (at heater inlet).
P
1
kW 8.1 8.1
Useful efficiency
At rated heat output and high temperature regime
1)

4
% 87.9 87.9
At 30 % of rated heat output and low temperature regime
2)

1
% 98.9 98.9
Auxiliary electricity consumption
At full load el
max
kW 0.039 0.039
At part load el
min
kW 0.013 0.013
In standby mode P
SB
kW 0.002 0.002
Other items
Standby heat loss P
stby
kW 0.061 0.061
Ignition burner power consumption P
ign
kW – –
Emissions of nitrogen oxides (only gas- or oil fired) NO
x
mg/kWh 40 40
Annual energy consumption Q
HE
kWh 20556 20556
Annual energy consumption Q
HE
GJ 74 74
Sound power level, indoors L
WA
dB 45 45
Additional data for combination heaters
Declared load profile – – XL XL
3)
3) XL tapping cycle declared in accordance with EN 13203-2, clause 5.2
Water heating energy efficiency 
wh
% 85 85
Water heating energy efficiency class – – A A
Daily electricity consumption (average climate conditions) Q
elec
kWh 0.173 0.180
Annual electricity consumption AEC kWh 38 40
Daily fuel consumption Q
fuel
kWh 22.908 22.896
Annual fuel consumption AFC GJ 18 18
Indication about ability working only during off-peak hours – –  
Other load profiles – – – –
Standing loss S W – –
Storage volume V l – –
Non-solar storage volume (Vbu) Vbu l – –

Worcester GR4700iW C Specifications

General

Brand	Worcester
Model	GR4700iW C
Category	Boiler
Language	English