Unit Description, Data And Dimensions; Technical Data - Vaillant ecoTEC plus 937 Instructions For Installation And Servicing

2 Unit description, data and dimensions

2 Unit description, data and
dimensions
2.1

Technical data

Name
Nominal heat output range of central heating
80 °C Feed/60 °C Return
60 °C Feed/40 °C Return
50 °C Feed/30 °C Return
40 °C Feed/30 °C Return
Maximum output DHW
Maximum heating output
Minimum output
Category
SEDBUK Band
SAP Seasonal Efficiency
Required gas flow pressure (G20, Natural Gas)
Required gas flow pressure (G31, Propane)
Connection value (if necessary referred to storage tank charging/hot water preparation) at
15 °C and 1013 mbar
Exhaust mass flow
at minimum thermal load (40 °C Feed/30 °C Return)
at maximum thermal load (80 °C Feed/60 °C Return)
Exhaust temperature
at minimum thermal load (40 °C Feed/30 °C Return)
at maximum thermal load (80 °C Feed/60 °C Return)
NOx class
Protection class
Max. flow temperature
Adjustable flow temperature (default setting: max. 75 °C)
Permissible total excess pressure central heating
Volume of water circulating (ΔT =20 K)
Approximating condensation water volume at 50 °C Feed/30 °C Return
Pump head
Minimum water flow
Specific throughflow in 10 min (ΔT = 30 K)
Permissible excess pressure water side
Required connection pressure for max. throughflow quantity
Required connection pressure for min. throughflow quantity
Hot water temperature discharge
Flue size (concentric)
Flue approval category
Pre-pressure 10 l expansion vessel
Connections for heating flow and return
Gas connection
Diameter of the drain line for the safety valve heating (min.)
Diameter of the drain line for the safety valve hot water (min.)
Condensate drain (min. internal diameter drain)
Dimensions (H x W x D)
Primary water quantity
Supply voltage
Main PCB fuse (slow-blow) for main power supply
Electr. Power consumption
Standby power consumption
Shift load power store capacity
Installation weight, just storage tank
Installation weight, just combi unit
Operating weight (with water)
Table 2.1 Technical Data ecoTEC plus 937
6
ecoTEC plus 937
Combination unit
12.0 - 28.0
12.3 - 28.9
12.7 - 29.7
12.9 - 30.3
37
28
12
II2H3P
A
91.5
20
37
G20: 4.0
G31 : 2.94
5.7
17.1
40
70
5
IP X4D
85
30 - 85
3.0
1204
2.9
250
< 0.1
204
10
1.3
0.1
35 - 65
60/100
C , C , C , C , C , B
13 33 43 53 83
0.75
22
22
15
15
19
720 x 440 x 597
2.5
230/50
2
175
6.5
15
17
38
62
ecoTEC plus 937 installation and maintenance manual
Unit
kW
kW
kW
kW
kW
kW
kW
%
mbar
mbar
3
G20 :m /h
G31 : kg/h
g/s
g/s
°C
°C
°C
°C
bar
l/h
l/hr
mbar
l/min
l/10min
bar
bar
bar
°C
mm
, B
23 33
bar
mm
mm
mm
mm
mm
mm
l
V ~/Hz
A
W
W
l
kg
kg
kg