DA 4200 Flow Sensor
Technical User Guide
604556 • 2023-06-16 439302
DA 4200 Flow Sensor
2 439302 Technical User Guide
1 Product description
439302 DA 4200 flow sensor is used as spare parts for DA 4200 heating units/floor heating units DN25 or DN32
with SmartHeat.
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2 Mounting guide
2.1 Recommended tools
Below is a list of tools recommended for assembly.
Topic Description
Screwdriver set
Side cutter
Water pump pliers
Pipe wrench
Adjustable spanner
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2.2 Mounting of flow sensor
Flush supply pipes before connecting them.
Before start-up, fill up the system with water.
Close the 4 ball valves.
Loosen the 3 unions.
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Dismount flow sensor, pipe and the 3 gaskets.
Mount a new flow sensor and a new gasket. Turn the
flow sensor so the arrow on the brass housing faces
up towards the blue actuator.
If necessary, turn the housing of flow sensor to the
best readable position.
Mount the short pipe and the 2 new gaskets.
DA 4200 Flow Sensor
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Tighten the 3 unions.
Open the 4 ball valves.
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3 Installation guide
3.1 Electrical connection
Installation, servicing and troubleshooting of all electrical equipment must be carried out by quali-
fied personnel in compliance with the applicable national and international standard EN 60204-1
and any other EU standards that are applicable in Europe.
The installation of a power supply isolator is required for each motor and power supply to facilitate
voltage-free work on the electrical equipment. The power supply isolator is not included.
3.2 General information about circuit diagrams
Symbols are in accordance with the IEC/EN 60617 standard.
The classification of the symbols ("letter codes") on the symbols is in accordance with the IEC/EN 81346-2 stan-
dard.
Reference designations are in accordance with IEC/EN 81346-1:2001 structuring principles and reference des-
ignations. This standard indicates structured methods for naming electrotechnical systems.
3.2.1 Power supply isolator
Power supply isolator
The installation of a power supply isolator is required for each motor and
motor control.
3.2.2 Letter code
The letter codes used in accordance with standard IEC/EN61346-2.
-F -K -M -Q -S -T -W
Protective equipment RCCB /
Initial fuse Protective motor
switch
Controller
Contactor
Fan
Motor
Power supply
isolator
Switch Motor con-
troller
Cable
DA 4200 Flow Sensor
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3.3 Cable plans and circuit diagrams
3.3.1 DA 4200 SmartHeat room heating
3.3.1.1 Cable plan
Controller
Heating unit
Power supply isolator
Connection box
Connection box
Can possibly carried in the same cable
3.3.1.2 Circuit diagram
Note to which terminal numbers the defect flow sensor are connected, mount the new flow sensor to the
same terminal numbers.
0-10 V actuator
DOL 12
Supply flow
DOL 12
Return flow Circulation pump
Connection box
Flow sensor
Possibly external supply
+24V
0V
Connection box
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3.3.2 DA 4200 SmartHeat floor heating
3.3.2.1 Cable plan
Controller
Floor heating unit
Power supply isolator
Connection box
Connection box
Can possibly carried in the same cable
3.3.2.2 Circuit diagram
Note to which terminal numbers the defect flow sensor are connected, mount the new flow sensor to the
same terminal numbers.
0-10 V actuator
DOL 12
Supply flow
DOL 12
Return flow Circulation pump
Connection box
DOL 12 control
temperature
Flow sensor
+24V
0V
Possibly external supply
Connection
box
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4 Testing
Testing after replacement of the flow sensor.
• Check that there are no leaks.
• Check that the wheel of the flow sensor is turning.
• Check that the arrow on the brass housing of the flow sensor faces up towards the blue actuator.
• Check that the flow meter is counting up, otherwise the flow meter is facing the wrong way.
• When the pipes are hot, check that the kWh is counted up in the controller's menu as a result of the heat
consumption in the house.
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5 Maintenance instructions
The flow sensor does not require special maintenance.
A coarse filter in the flow meter's inlet pipe can be removed and cleaned in case of problems with the flow.
5.1 Cleaning
Be aware that the pipes must be cold before cleaning, otherwise the dirt will stick to them.
Clean the product with a cloth that has been wrung out almost dry in water and avoid using:
• high-pressure cleaner
• solvents
• corrosive/caustic agents
5.2 Recycling/Disposal
Products suitable for recycling are marked with a pictogram.
It must be possible for customers to deliver the products to local collection sites/recycling stations in accordance
with local instructions. The recycling station will then arrange for further transport to a certified plant for reuse,
recovery and recycling.
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6 Technical data
6.1 Flow sensor
Flow sensor
Mechanical
Min. flow l/h 100
Max. flow l/h 4700
Output reed-switch 1 pulse per liter
*Accuracy max. kWh % ±10
Max. water temperature °C 90
Thread " 1
Length mm 130
Environment
Operating temperature °C +2 to +60
Temperature, storage °C +2 to +60
Protection class IP 44
Shipment SmartHeat kit
Dimensions when packed
HxWxD
mm 260x190x150
Shipping weight g 906
* At differential temperature (flow temperature – return flow temperature) ≥ 5 °C and between +30 °C to +90 °C
flow temperature.
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6.2 Flow diagram
6.2.1 DA 4200 SmartHeat room heating
Distribution system/heat source
Return flow Supply flow
Return flow Supply flow
House
(A) 3-way control valve
(B) Actuator 0-10 V
(C) Circulation pump
(D) Non-retur valve
(E) Flow sensor
(F) Ball valve
(G) DOL 12-100C temperature sensor
6.2.2 DA 4200 SmartHeat floor heating
Distribution system/heat source
Return flow Supply flow
Supply flow
Return flow
House
(A) 3-way control valve
(B) Actuator 0-10 V
(C) Circulation pump
(D) Non-retur valve
(E) Flow sensor
(F) Ball valve
(G) DOL 12-100C temperature sensor
604556 • 2023-06-16 • en-US • Made in Denmark
SKOV A/S • Hedelund 4 • Glyngøre • DK-7870 Roslev
Tel. +45 72 17 55 55 • www.skov.com • E-mail: [email protected]
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