Specification - Wolf CGU-2-18 Installation And Maintenance Instructions Manual

Type
Rated output
Rated thermal load
Lowest output (modulating)
Lowest thermal load (modulating)
Standard efficiency at 75/60 °C (Hi/Hs)
Outside diameter, heating flow
Outside diameter, heating return
DHW connection (or cylinder connection)
Cold water connection (or cylinder connection)
Gas connection
Balanced flue connection
Gas supply details:
Natural gas H (H = 9.5 kWh/m³ = 34.2 MJ/m³)
i
LPG P (H = 12.8 kWh/kg = 46.1 MJ/kg)
i
Gas supply pressure:
Natural gas
LPG P
Flow temperature (setting range)
Heating water temperature range ( preselected )
Max. overall pressure, heating
Heating water heat exchanger
Residual pump head: Pump stage 1/2/3
430 l/h supply volume (10 KW at ∆t = 20 K) mbar
770 l/h supply volume (18 KW at ∆t = 20 K) mbar
1 030 l/h supply volume (24 KW at ∆t = 20 K) mbar
Specific water throughput D at ∆t = 30 K
DHW throughput (version IT, ES)
2)
Minimum flow pressure / for 95% Q
Max. permissible overall pressure
DHW temperature range *
Expansion vessel
Total capacity
Inlet pressure
Flue gas mass flow rate
Flue gas temperature
1)
Required boiler draught
Flue gas group according to DVGW G 635
NOx class
Flue gas monitoring delay
Electrical connection
In-built safeguard, connection/circuit board
Power consumption / standby
Protection
Total weight (dry)
CE ID
Q / Q at 80/60 °C at the boiler connection
1)
B_Min B_Rated
* Only use temperatures above 60 °C under controlled conditions, as there is a risk of scalding.
60

Specification

water content
2)
2)
max
1)
CGU-2(K) 18
kW 18
kW 20.2
kW 8.0
kW 8.8
% 93/85
G ¾"
G ¾"
G ¾"
G ¾"
G ¾"
mm 110
m /h 2.1
3
kg/h 1.5
20
mbar
50
mbar
°C 40-90
°C 40-80
bar 3
l 0.5
mbar
250/250/250
180/250/250
- / - / -
l/min 8.7
l/min 2.7-6 (9)
bar 0.27 / 0,9
bar 10
°C 40-60 (65)
l 10
bar 0.75
g/s 12.8 / 13.9
°C 80 /123
Pa 1.5
-
5
min 15
V~/Hz 230/50
A 3.15 mT
W 83 / 6
IPX 4D
kg 39
Applies only to combi boiler versions CGU-2 K and CGG-2 K
2)
CGU-2(K) 24
24
26.5
10.9
12.0
94/85
¾"
¾"
¾"
¾"
¾"
130
2.8
2.1
20
50
40-90
40-80
3
0.5
250/250/250
160/250/250
- /210/250
11.7
2.7-8 (12)
0.27 / 0,9
10
40-60 (65)
10
0.75
15.0 / 19.0
80 /125
1.5
-
5
15
230/50
3.15 mT
83 / 6
IPX 4D
41
CE-0085BS0516
3062347_0309