
8
-
Installation & Servicing
GENERAL
For the correct operation of the boiler, the use of a mixing
header is advisable because it provides:
-
separation and collection of circuit dirt
-
good air venting
-
separation of the two hydraulic circulation circuits
2
MIXING HEADER
D
BF
BR
a
b
c
g
g
h
HF
e
FLOW
RETURN
FLOW
RETURN
1
/
2
"
1
/
2
"
F
I
L
T
E
R
HR
SECONDARY
HEATING
CIRCUIT
PRIMARY
BOILER
CIRCUIT
ima 5790
The use of a mixing header means that compensating controls
can be used to operate mixing valves on a variable temperature
circuit, without affecting the water flow rate through the boiler.
Model
D
BF BR
HF HR
a
b
c
e
h
g
mm
DN
DN
mm
mm
mm
mm
mm
mm
80 kW
100
50
50
200
300
1,000
150
1,650
200
120 kW
150
65
65
200
300
1,000
150
1,650
200
160 kW
200
80
80
200
300
1,000
150
1,650
200
200-240-280 kW
200
100
100
200
300
1,000
150
1,650
200
Use the Table below as a guide for sizing a suitable mixing header.