Junkers ZWE 24 MFA Series User Manual

B
A
6.1 Mechanical adjustment
0 50 100 150 200 250 300 350 400 450 500
70
75
90
tv (° C)
50
80
40
30
55
VA ( l )
60
6 720 610 421-07.1O
6.1.2 Adjusting the flow temperature
Canceling the maximum flow temperature limit
approx. 69ÿC
Fig. 21
AND
of the expansion vessel according to the regulations.
6.1.1 Checking the size of the expansion vessel
4
Thermostat knob position E.
This corresponds to a maximum flow temperature of 75ÿC.
• maximum working pressure: 3 bar.
2
approx. 45ÿC
approx. 57ÿC
• 1% of the pre-existing water in the expansion vessel or 20% of the
nominal value of the nominal volume in the expansion vessel
• vessel preload pressure
The position
B Remove the yellow button from the button
The temperature is reasonable
The following diagram makes it possible to assess, broadly speaking,
whether the existing expansion vessel is sufficient or an additional
expansion vessel is required (no floor heating).
For heating systems that require higher flow temperatures, the limitation
may be canceled.
The flow temperature can be adjusted in the range of 45ÿC and approx.
90 ° C.
B Insert the yellow button again, but rotate 180ÿ (the point should be
inwards).
max
approx. 75ÿC
B If the point of intersection is to the right of the curve: Install an
additional expansion vessel.
with membrane
It is not necessary to adjust the heating power to the calculated heat
demand.
5
approx. 63ÿC
Fig. 20
approx. 51ÿC
B In case of extreme situations: Set the size
expansion corresponds to the static height of the
installation above the appliance
is limited from the factory to
3
1
For the represented curves, the following conditions were
observed:
Individual adjustment
The flow temperature is no longer limited.
• the pressure difference for the safety valve is 0.5 bar, according
to the regulations
thermostat with a screwdriver.
Limiting the maximum flow temperature
Tab. 6
approx. 87ÿC
19
Preload pressure 1.0 bar
I
IN
Preload pressure 1.3 bar
Preload pressure 0.75 bar
VA The volume, in liters, of the installation
IV
Preload pressure 0.5 bar
Requires an additional vV expansion vessel
The temperature is reasonable
III
Preload pressure 0.2 bar
A Field of work of the expansion vessel
6 720 610 828 RO (02.01)
II
B
6 720 610 332-27.1O
6 Individual adjustment
Machine Translated by Google

Junkers ZWE 24 MFA Series Specifications

General

Brand	Junkers
Model	ZWE 24 MFA Series
Category	Boiler
Language	English