MULTICAL® 302
26
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
6
Installation
6.1
Installation requirements
Prior to installation of MULTICAL
®
302 the heating system should be flushed while a fitting piece replaces the meter.
Remove the adhesive wafers from the meter’s inlet and outlet and mount the flow sensor with couplings. New fibre
gaskets in original quality must be used. The flow sensor must be mounted with the arrow pointing in the flow
direction.
If other couplings than the original ones from Kamstrup A/S are used you must make sure that the threaded lengths of
the couplings do not prevent proper tightening of the sealing surface.
Correct mounting of flow sensor in inlet or outlet appears from the display.
Example of display reading if
the meter is configured for "flow
sensor in inlet pipe"
Example of display reading if
the meter is configured for "flow
sensor in outlet pipe"
In order to prevent cavitation the operating pressure at the flow sensor must be min. 1 bar at qp and min. 2 bar at qs.
This applies to temperatures up to approx. 80 °C. See paragraph 6.5 for further information on operating pressure.
When the installation has been completed, water flow can be turned on. The valve on the inlet side of the flow sensor
must be opened first.
The flow sensor must not be exposed to lower pressure than the ambient pressure (vacuum).
Permissible operating conditions
Ambient temperature:
5…55
°
C (indoors). Max. 30
°
C for optimum battery lifetime.
Temperature of medium:
2…130
°
C with calculator mounted on a wall
15…90
°
C with calculator mounted on flow sensor
System pressure:
1…16 bar or 1…25 bar depending on the meter's marking
Service
When the meter has been mounted in the heating system neither welding nor freezing is allowed. Dismount the meter
from the heating system before starting such work.
In order to facilitate replacement of the meter, closing valves should be mounted on both sides of the meter.
Under normal operating conditions no pipe strainer is required in front of the meter.