4
4
ECOmax
VUW 236 EH
VUW 286 EH
units
Countries of Destination
GB, IE
Maximum CH heat input
19.5 (66,500)
24.2 (82,600)
kW (Btu/h)
CH heat output range
80 °C flow/60 °C return
9.9-17.2
12.3-21.3
kW
(33,800-58,700)
42,000-72,700)
(Btu/h)
50 °C flow/30 °C return
10.5-18.0
13.1-22.3
kW
(35,800-61,400)
(44,700-76,100)
(Btu/h)
Maximum DHW heat input
25.0 (85,300)
31.1 (106,100)
kW (Btu/h)
Maximum DHW heat output
22.7 (77,500)
28.3 (96,600)
kW (Btu/h)
DHW flow rate @ 35 °C rise
9.3
11.6
l/min
Mains water pressure required for max. flow rate
1.0
1.0
bar
Minimum water flow rate
2
2
l/min
Mains water pressure required for min flow rate
0.2
0.2
bar
Maximum inlet water pressure
10
10
bar
Inlet gas working pressure required (Natural Gas)
20
20
mbar
Gas supply (G20) Gross C.V. (s.t.)
37.8
37.8
MJ/m
3
Gas burner pressure max (DHW)
3.0
3.0
mbar
Gas rate max (DHW)
2.38
2.96
m
3
/h
CH flow temperature range
35-90
35-90
°C
Minimum CH water flow (for 20 °C rise)
770
960
l/h
Pump pressure available
0.25
0.25
bar
12 l expansion vessel pre-charge pressure
0.8
0.8
bar
Maximum CH system pressure
3.0
3.0
bar
Connections
Heating flow / return
3
/
4
3
/
4
in. BSP
Cold water inlet
15
15
mm
DHW outlet
15
15
mm
Gas inlet
15
15
mm
Condensate drain (internal diameter, min)
19
19
mm
Pressure relief discharge pipework (min)
15
15
mm
Weight
56
57
kg
Boiler water content
1.5
1.6
litres
Volume of condensate (max.)
0.5
0.6
l/h
Maximum flue gas temperature
70
70
°C
Electrical supply
Voltage
230/50
230/50
V~/Hz
Fuses internal/external
2/3
2/3
A
Power input
130
130
W
2. Boiler specification
2.1 Technical data
