Worcester GR4700iW C Installation And Maintenance Instructions

Technical Specifications/Logs
83
Greenstar 4000 – 6 720 891 161 (2020/09)
13 Technical Specifications/Logs
13.1 Technical data
Technical data table - Greenstar 4000
Natural Gas appliances
Greenstar 4000 GR4700iW 30 C NG GR4700iW 30 C/ GR4700iW 25 C
NG Low NOx
GR4700iW 25 C NG
Description Unit
Gas flow maximum rate - 10 minutes from lighting
Gas inlet pressure (nominal)
1)
mbar 20.0 20.0 20.0
Natural gas
2)
m
3
/h 3.14 3.14/2.63 2.63
Heat output/load
Modulation range, heat input Q kW 3.2 - 30.6 3.2 - 30.6/25.5 3.2 - 25.5
Adjustment range, rated heat input of heating Q
n
kW 3.2 - 24.6 3.2 - 13.2 3.2 - 24.6
Adjustment range, rated heat output (80/60 °C) P
n
kW 3.0 - 24.0 3.0 - 13.0 3.0 - 24.0
Adjustment range, rated heat output (50/30 °C) P
cond
kW 3.3 - 24.7 3.3 - 13.9 3.3 - 24.7
Adjustment range, rated heat output (40/30 °C) kW 3.3 - 24.8 3.3 - 13.9 3.3 - 24.8
Maximum flow temperature °C 82 82 82
Maximum flow temperature possible °C 86 86 86
Maximum permissible operating pressure (PMS) bar (MPa) 2.5 (0.25) 2.5 (0.25) 2.5 (0.25)
Available pump head at 20 °C system temperature rise m 2 2 2
Domestic Hot Water (DHW)
Rated heat input, DHW (net) (Q
nW
) kW 29.4 24.5
Minimum heat input kW 3.2 3.2
Minimum required flow to activate DHW demand l/min 1.9 1.9
DHW temperature range °C 35 - 60 Low NOx only applies to 35 - 60
Maximum cold water inlet temperature (without additional
accessories)
°C 25 Central Heating 25
Maximum mains inlet pressure (standing pressure PMW) bar (MPa) 10 (1) 10 (1)
Minimum mains inlet pressure (working) for max. flow bar (MPa) 1.2 (0.12) 1 (0.1)
Minimum mains inlet pressure (working) for operation bar (MPa) 0.2 (0.02) 0.2 (0.02)
Maximum DHW flow rate - 40 °C rise ± 15%
3)
l/min 11 9
Maximum DHW flow rate - 35 °C rise (for industry comparison) l/min 12.3 10.2
Flue
Flue gas temperature max. load DHW demand °C 77 77/72 72
Flue gas temperature 80/60 °C, rated/min. load °C 71/57 59/57 71/57
Flue gas temperature 40/30 °C, rated/min. load °C 50/30 39/30 50/30
CO
2
level at max. rated heat output (after 10 minutes) % 9.4 9.4 9.4
CO
2
level at min. rated heat output (after 10 minutes) % 8.6 8.6 8.6
NOx rating (EN 15502-1) mg/kWh 40 32 40
NOx Class  6 6 6
Condensate
Maximum condensate rate l/h 2 2 2
pH value, approx.  4.8 4.8 4.8
Electrical
Electrical power supply voltage a.c. V 230 230 230
Frequency Hz 50 50 50
Maximum power consumption (stand-by) W 2 2 2
Maximum power consumption (heating) W 94 63 94
Maximum power consumption (Domestic Hot Water) W 123 123/98 98
Energy efficiency index (EEI) heating pump  ≤0.20 ≤0.20 ≤0.20
Approval data
Gas group classification (gas type) UK/IE CATII
2H/3P
Installation type C
13
, C
33
, C
53
General data
Expansion vessel capacity l 6 6 6
Expansion vessel pre-charge pressure bar 0.75 0.75 0.75
Appliance protection rating IP X4D X4D X4D
Permissible ambient temperature °C 0-50 0-50 0-50
Nominal capacity of the appliance l 3.9 3.9 3.9

Worcester GR4700iW C Specifications

General

Brand	Worcester
Model	GR4700iW C
Category	Boiler
Language	English