Installation and maintenance instructions ecoTEC 0020029173_01
14
Selection of the low loss header
The low loss header uncouples the boiler from the
heating system. A sufficiently large water volume is
constantly supplied through the boiler via the low loss
header in conjunction with the boiler pump. It acts as a
neutral point in the system and has minimal hydraulic
resistance, therefore the boiler pump does not affect
the circuit pumps and vice-versa.
A suitable WH type low loss header can be chosen from
Table 5.1.
Temperature difference of heating system
Output of heating
system
10 K
15 K
20 K
Stand-alone boiler
WH 160
WH 95
WH 95
Two cascade
arrangement
WH 280
WH 160
WH 95
Three cascade
arrangement
WH 280
WH 280
WH 160
Table 5.1 Selection of the low loss header
No electrical accessories are required in order to use a
low loss header. Simple systems can be connected
directly inside the electronic box.
Model
Article-
number
Connection
Sizes
1
Header
width
A
Header
depth
B
Total
height
C
Insulation
dimensions
To boiler
D
To heating
circuit
E
Height from
floor
F
Maximum
volume flow
m
3
/hr
WH 95
306721
2“ BSP (f)
155
155
750
155/155
470
540
n/a
8
WH 160
306726
DN65
520*
120
1350
220/220
900
900
300
12
WH 280 306725
DN80
600*
160
1390
260/260
930
930
300
21.5
Table 5.2 Low loss headers dimensions
All dimensions in mm
* = distance between flanges
5 Installation
