Kamstrup MULTICAL 41, Техническое описание, Страница: 16 / 44

TECHNICAL DESCRIPTION MULTICAL
®
41
5512-313 GB/01.2010/Rev. C1
16
6 Installation
6.1 Installation requirements
Before mounting MULTICAL
®
41, flush the system thoroughly with a fitting pipe mounted instead of the meter.
Then remove the protection caps from the input and the output of the meter and mount the flow sensor with
glands. Always use new packings in original quality.
In connection with mounting please make sure that the thread length of the glands does not prevent the sealing
surface from being sufficiently tightened, and that NP10 glands are used (PN16 threads/glands can be used as
well).
Correct position of the flow sensor. An arrow on the flow sensor indicates the flow direction.
The meter connection cables must be placed in such a way that condensed water cannot get into the meter.
Permitted operating conditions:
Ambient temperature: 0…55
°
C
Medium temperature: 0.1…30
°
C
System pressure: 1.5…16 bar (depending on gaskets/glands)
EMC conditions
MULTICAL
®
41 is intended for installation in residential houses as well as in light industrial environments and the
meter is CE marked according to OIML R 49 type test class E1 and the low-voltage directive.
Control cables from the meter must be drawn at a minimum distance of 25 cm from other installations.
Electrical installations
MULTICAL
®
41 is available for both 24 VAC and 230 VAC mains supply. The mains connection is made with a 2
wire cable without earth connection.
Use a strong connection cable with an outside diameter of max. 7 mm and ensure that the meter has a correct
cable retainer.
National regulations for electric installations must always be met, including e.g. a cable cross section used in
relation to the fuse size of the installation (short-circuit current). Max. fuse 6 A.
For installations made in Denmark, the information from ”Elråd” concerning ”installations for mains supplied
heat meters” applies to both direct 230 VAC supplied meters and 24 VAC meters supplied via a safety
transformer.
Service
When the meter has been mounted in the system neither welding nor freezing is permitted. Dismount the meter
from the system and disconnect the mains supply to the meter, if any, before the work is started.
To facilitate possible replacement of the meter, closing valves should always be mounted on both sides of the
meter.
Under normal operating conditions no strainer is required on the front of the meter.