Pipe connections HBS 16
Install as follows:
႑First drain the boiler water reservoir/heating system if
filled with water.
႑Position the extra heat medium pump (EP21-GP20) in a
suitable location outside HBS 16.
႑The shunt valve (EP21-QN25) is located on the flow line
after HBS 16, before the first radiator in the heating
system 1. The return line from heating system 2 is con-
nected to the shunt valve (EP21-QN25) and to the return
line from heating system 1, see illustration on page 11.
႑The flow sensor (EP21-BT2) is installed on the pipe after
the heat medium pump (EP21-GP20).
႑The return line sensor (EP21-BT3) is installed on the pipe
from heating system 2.
႑When installing the sensor, heat conducting paste must
be used and the pipe must be insulated to obtain the
correct temperature measurement.
NOTE
Incorrect installation can affect the function.
LEK
By-pass valve, (EP21-QN25)
Connections, Ø 28 mm
LEK
Return
HBS 16 Flow pipe
1
2
3
Pump and pressure drop diagrams
0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600
0
10
20
30
40
50
60
70
0,40,30,20,10 0,5 0,6 0,7
CP2
PP1
CP1 PP2
Speed I Speed II
Speed III
Flow
l/h
l/s
Available pressure,
kPa
Choose between seven settings on the pump. You can
choose between three different constant speeds (I, II or
III) or two different curves, one proportional pressure (PP)
and one constant pressure (CP), where 1 is lowest and 2
highest.
Shunt valve characteristics
Flöde
(%)
10
0
20
30
40
50
60
70
80
90
100
01020
30 40 50 60 70 80 90
Vinkel (°)
2-3 (vinkel)
1-2 (rak)
Angle ( )
Flow
(%)
2-3 (angle)
1-2 (straight)
KVS value 12
Recommended for floor heating areas over 200 m2.
ESV 2810
GB
