Installation and Configuration

MULTICAL® 603
Kamstrup A/S · Industrivej 28, Stilling · DK-8660 Skanderborg · T: 89 93 10 00 · info@kamstrup.dk · kamstrup.com
MULTICAL® 603
> 60 °C
At a media temperature higher than 60 °C, the flow sensor should be shielded from
unintended contact.
230 VAC
When connecting to a 230 V supply, there is a risk of electric shock.
16/25 bar
When working on the flow sensor in the installation, there is a risk of outflow of (hot)
water under pressure.
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Contents
In general 04
Information 05
Mounting of flow sensor 07
Mounting of temperature sensors 14
Mounting the calculator 21
Information codes “INFO” 23
Voltage supply 26
Testing of function 28
Accessories 29
User guide 31
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In general
https://guides.kamstrup.com/userguides/gb_mc603.htm
https://www.kamstrup.com/en-en/heat-solutions/meters-devices/
meters/multical-603/documents
https://www.kamstrup.com/
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Information
1/2
E1
MID EN 1434
q: 2 °C…180 °C DΘ: 3K…178K
E3
DK-BEK 1178 EN 1434
q: 2 °C…180 °C DΘ: 3K…178K
E1 E3
EN 1434
q: -40 °C…140 °C DΘ: 3K…178K
ULTRAFLOW®
qq: 2°C…130°C
The meter's approvals and temperature area for heat and cooling measurements
(E1 and E3), respectively. This data can also be found on the meter’s front.
E1 E2 M1 M2
5°C…55°C
> 25 CM MULTICAL® 603: IP 65
ULTRAFLOW® 44: IP 68
ULTRAFLOW® 54: IP 65
The meter's environmental and mechanical classes. The meter must be mounted
indoors in the temperature area of 5 °C…55 °C. The meter’s signal cables should be
drawn at least 25 cm away from other installations. The meter has the mechanical
classes 1 and 2.
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Information
2/2
Data + : HC-003-10
Data + : HC-003-11
M-Bus + : HC-003-20
M-Bus + : HC-003-21
M-Bus + : HC-003-22
1xD: HC-993-02
1xC IoT: HC-993-06
230 VAC: HC-993-07
24 VAC: HC-993-08
2xA: HC-993-09
29
Pt500 direct short sensor set, 27.5 mm
Pt500 direct short sensor set, 38.0 mm
Pt500 pocket sensor set, ø5.8 mm
Pt100 direct short sensor set, 27.5 mm
30
MULTICAL® 603-M
Pt500 direct short sensor set
The meter installation technician may replace the meter’s temperature sensor set,
communication module and power supply module. The overview shows some of the
communication modules, power supply modules and the temperature sensor connection of the
meter type. Get the full overview on page 29.
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Mounting of flow sensor
1/7
DN15 - DN125
PN16, PS16 PN25, PS25
PN16, PS16 PN16, PS16 < DN100
PN25, PS25 PN25, PS25
PN40, PS32 PN40, PS32
PN40, PS32 PN16/PN25, PS25
PN16, PS16 PN16, PS16 < DN100
PN25, PS25 PN25, PS25 < DN100
PN40, PS32 PN40, PS32
Pressure stage and flow data of the meter. The pressure stage of the provided
accessories follows the markings on the meter. Up to and including DN80, PN16
and PN25 are connection compatible.
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Mounting of flow sensor
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DN15 - DN125
PN16, PS16 PN25, PS25 PN40, PS32
DN20 DN25/DN15 DN32/DN10
The DN measurements of the meter must fit the installation, but one dimension
up or down in size is also acceptable.
ULTRAFLOW®
11 -
9+ V2
69
11 -
9+ V1
10
Connection terminals for ULTRAFLOW®.
Blue cable is negative, red cable is positive and yellow cable is signal.
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Mounting of flow sensor
3/7
11 - 11B -
V1 V1
10 10B +
11 -
V2
69
Connection of other flow sensors. Flow sensors with Reed switch or transistor
output can be connected to MULTICAL® via the terminal numbers in the table to
the left.
Some types of MULTICAL® can be connected to other flow sensors with 24 V active
pulse outputs using the terminal numbers in the table to the right.
E3
qp 0.6...2.5 m3/h
E3
qp ≥ 3.5 m3/h
45°
90° 90°
E3
90° 90° qp ≥ 6.0 m3/h
45°
The flow sensor can be mounted horizontally, vertically or at an angle. In case of
cooling installations, it is recommended to mount the flow sensor at an angle of
0° for qp 0.6…2.5 m3/h and at an angle of 45° for the remaining sizes.
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Mounting of flow sensor
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41
6
A Recommended position.
B Recommended position.
C Unacceptable position due to risk of air build-up.
D Acceptable position in closed systems.
E Ought not to be placed immediately after a valve, with the exception of block
valves (ball valve type) which must be fully open when not used for blocking.
F Ought not to be placed immediately before or after a pump.
G Ought not to be placed immediately after a double bend in two planes.
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Mounting of flow sensor
5/7
qp 0.6...2.5 m3/h
1
0° 0°
43 1
-45° -45°
1
qp ≥ 3.5 m3/h qp ≥ 6.0 m3/h
1
45° 45°
2 2
2
0° 0°
1 2
&
-45° -45°
1
Directions marked with can be used if the prerequisites below are met:
1 District heating water must be pure and not contain impurities. In a given case,
impurities can cover the transducers of the flow sensors, which affects their
abilities to register and send the ultrasound signal.
2 District heating water must be free of air. Air bubbles affect the ultrasound
signal significantly.
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Mounting of flow sensor
6/7
E3
ULTRAFLOW® 44
The electronics box must be mounted hanging or on wall/panel. The box must not
be mounted directly on the flow sensor or pipe.
x2 =
V1 + V2
60
When two ULTRAFLOW® sensors are direct connected to one MULTICAL®, an
equipotential connection (electric low impedance connection) between the two
pipes should be carried out as a main rule to protect the meter electronics against
transients and potential differences.
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Mounting of flow sensor
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1 2 3
Preparations before mounting. Before mounting the flow sensor, protection
wafers are removed; remember gasket when mounting.
See the meter display for correct placement of the flow sensor in either inlet or
outlet, depending on the meter setup.
In the same way, the mounting of the flow sensor in the correct flow direction is
ensured, which is indicated by an arrow on the flow sensor.
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Mounting of temperature sensors
1/7
t1 t2
t2 t1
Mounting the temperature sensor. t1 is always mounted in inlet, whereas t2 is
always mounted in outlet. t1 and t2 appear from the temperature sensor label.
t1
t2
8 7 6 5
t1
t2
In addition to the marking on the label, t1 is marked with a laser engraved grey
ring at both ends of the cable for quick identification.
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Mounting of temperature sensors
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(x1) t1 (x2) t2 (x0) t3
t1 t2 t3
Depending on the type of temperature sensor, there are, in addition to the
marking of t1, t2 and t3, colour and bar codes for quick identification. t1 is always
marked with a black line, whereas t2 is always marked with two black lines. t3 is
never marked with lines but is always marked with grey. t3 can be mounted both
in inlet and outlet.
Heat: t1 is marked with red colour and a black line; t2 is marked with
blue colour and two black lines; t3 has no marking.
Cooling: t1 is marked with blue colour and a black line; t2 is marked with
red colour and two black lines; t3 has no marking.
Heat/Cooling: t1 is marked with both red and blue colours and a black line; t2 is
marked with both red and blue colours and two black lines; t3 has
no marking.
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Mounting of temperature sensors
3/7
Mounting/immersion depth of the temperature sensor. The sensor must
as a minimum cross the centre of the pipe to ensure correct temperature
measurement.
Be aware of the sensor’s direction in the installation.
Cooling: To avoid that condensation forms on the sensor, the sensor should be
mounted with the cable pointing downwards or to the side so that drops
of water cannot get into the sensor.
Heat: All directions are acceptable.
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Mounting of temperature sensors
4/7
PN16 PN25 PN16 PN25
Approved pressure class of the temperature sensor. Temperature sensors and
sensor pockets are approved for PN16 and PN25.
+ + +
qp DN G DS 27,5 DS 38 PL ø5.8
0.6-1.5 15 G¾B X
0.6-1.5 20 G1B X
3.5-6 25 G5/4B X
10 40 G2B X
15 50 - X
Temperature sensor and flow sensor compatibility. The size of the flow sensor
determines which temperature sensors you can use and how to mount them.
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Mounting of temperature sensors
5/7
3130-287 1
2
3
2
4
3
4 5
Mounting of ø5.0/ø5.2 with composite union nut. When mounting a sensor in a
ball valve that does not follow EN1434-2:2022, an O-ring is inserted using the
mounting tool (3130-287) as well as the provided spacer ring before the sensor is
installed in the valve. When mounting a sensor in a flow sensor, nipples and ball
valves that follow EN1434-2:2022, an O-ring is inserted using the mounting tool
(3130-287) before the sensor is mounted.
The tightening of the sensor is done by hand.
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Mounting of temperature sensors
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1
2 3
Correct mounting of pocket sensors in sensor pockets. When mounting pocket sensors, the
sensor must be pushed all the way to the bottom of the pocket to avoid air at the bottom of the
pocket. The collar of the cable is pushed down to the pocket opening, and the relief screw is
tightened by hand.
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Mounting of temperature sensors
7/7
-1
x2 1+1
x2
+1
Replacing two temperature sensors. When replacing temperature sensors, both
sensors must be replaced by a new paired set. It is not allowed to replace only one
temperature sensor.
Shortening of temperature sensor cables. It is not allowed to shorten the cables
of the temperature sensor.
R > 10 mm
Cable insulation of the temperature sensor. If the temperature sensor cables are
bent in connection with the mounting, a bending radius of at least 10 mm must be
ensured.
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Mounting the calculator
1/2
qp ≤ 2.5 m3/h θq > 90 °C θq < RT
3026655
2
1 3
E3
1 2
The calculator can with advantage be mounted on the flow sensor in installations
in which the medium temperature is higher than the ambient temperature but
lower than 90 °C. Alternatively, the calculator can be mounted to a wall.
In cooling installations, the calculator must be placed on the wall above the flow
sensor to avoid condensation problems.
For wall mounting, use 3026207.
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Mounting of calculator
2/2
3
Mounting of installation seals. To protect against fraud on the meter installation,
installation seals must be mounted. The sealing of the installation can, for
example, be done by means of wire and seal, sealing label or a combination of
these.
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Information codes “INFO”
1 2 3
1/3
In case of errors in the
meter, the info code
appears in the meter
display. The various
info codes are shown
in the table below. For
for further information,
see the technical
description.
1 2 3 4 5 6 7 8
Info t1 t2 0 V1 0 In-A In-B
1
2
9
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Information codes ”INFO”
2/3
1 2 3 4 5 6 7 8
Info t1 t2 0 V1 0 In-A In-B
1 t1 > 185 °C t1
1 t2 > 185 °C t2
1 t3 > 185 °C
t3
2 t1 < 0 °C t1
2 t2 < 0 °C t2
2 t3 < 0 °C
t3
9 9 Dt (t1-t2) =
9 A:
8 B:
9 B:
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Information codes ”INFO”
3/3
1 2 3 4 5 6 7 8
Info t1 t2 0 V1 0 In-A In-B
1 V1:
1 V2:
2 V1: p/l =
2 V2: p/l =
3 V1:
3 V2
4 V1:
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Voltage supply
1/3
5510-408
The meter's battery must neither be charged nor short-circuited.
Batteries are disposed of by handing them in for approved destruction of lithium
batteries, e.g. to Kamstrup A/S.
1 2 3
It must be ensured that the electrical connection of the meter complies with
the rules in force. In case of doubt, it is recommended to consult an authorised
electrician
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Voltage supply
2/3
230 VAC / 50 Hz / 1 W 24 VAC / 50 Hz / 1 W
230 VAC / 50 Hz / 1 W 24 VAC / 50 Hz / 1 W
24 VAC/VDC / 50 Hz / 1 W
230 VAC 24 VAC
230 VAC 24 VAC
d = 5...8 mm
d = 5...8 mm
1 2 3
Fixed supply. On the meter front, it can be seen if the meter is prepared for 230
VAC or 24 VAC/VDC. This is also shown at the connection terminals.
Cables with an outer diameter of 5…8 mm must be used. The cable is relieved in
the meter through the provided relief bracket around the outer cap.
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Testing of function
1 2 3
t1 = XX °C
t2 = XX °C
l/h = XX.XX
4
After completed installation, it is checked that the meter functions correctly.
Open thermoregulators and valves to establish water flow through the system.
Then check if reliable values are shown for t1, t2 and flow.
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Accessories
https://www.kamstrup.com/en-en/heat-
solutions/meters-devices/accessories
Battery, 1xD HC-993-02
230 VAC high power HC-993-03
24 VAC/VDC high power HC-993-04
Battery, 1xC IoT HC-993-06
230 VAC HC-993-07
24 VAC HC-993-08
Battery, 2xA HC-993-09
The meter can be mounted with different power supplies and batteries. These can be
replaced freely after the complete mounting of the meter.
Kamstrup A/S • FILE100002838_D_EN_09.2026 29
Accessories
https://www.kamstrup.com/en-en/heat-
solutions/meters-devices/temperature-sensors
2x Pt500
Direct short sensor set, 27.5 mm
Direct short sensor set, 38.0 mm
Pocket sensor set, ø5.8 mm
2x Pt100
Direct short sensor set, 27.5 mm
4x Pt100/Pt500
Pocket sensor set, ø6.0 mm
Pocket sensor set, ø5.8 mm
The meter can be mounted with different types of temperature sensors. These can be
replaced freely after the complete mounting of the meter.
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?
B1 A1
TA2
TA3 t1 t2
TA4 t2
t1
1
qp=1.5 E3
E1
Kamstrup A/S • FILE100002838_D_EN_09.2026
H2O
DDD = 310/610
https://guides.kamstrup.com/userguides/gb_mc603.htm
MULTICAL® 603
Copyright © Kamstrup A/S • FILE100002838_D_EN_09.2026
Kamstrup A/S · Industrivej 28, Stilling · DK-8660 Skanderborg · T: 89 93 10 00 · info@kamstrup.dk · kamstrup.com