meibes MeiFlow MFR3 User Manual

Fixed value controller MFR3
Check the controller and its packaging carefully. If you see visible damage to the
controller, do not use it. Installing a damaged product can be life-threatening.
When adjusting the controller, pay attention to the correct opening direction of the valve.
Wrong turning direction can lead to high or low temperatures in the system and
consequently damage to the system.
When adjusting the controller, make sure you set the minimum and maximum value of
requested temperatures correctly. Incorrectly selected limit values for setting the
requested temperature lead to a wrong setup of requested temperature and,
consequently, undesirable operation and/or damage to the system and user.
The fixed value controller is designed to control a mixer. Any other use is not intended.
The controller may only be installed and operated in:
-Dry, non-explosive environment.
-Enclosed rooms.
-Rooms with a temperature between 0 °C and +55 °C.
Every project with controller must have independent system protection for cases of too
low or too high temperatures. The controller does not perform protection functions for
cases of too high or too low temperatures in the system. High or low temperatures in the
system can cause damage to the system and user.
1 - Button (Reset).
2 - Button (Move to left or decrease value).
3 - Button (Move to right or increase value).
4 - Button (Confirm selection).
5 - USB connection for PC
6 - Graphic display.
7 - Button (Help / User manual).
8 - Clutch for manual operation.
9 - Removable knob for manual operation.
10 - Pre-wired power cord with plug.
11 - Pre-wired temperature sensor.
Commissioning of the controller
24.0
°
16 40
MAX
40.0
°
21 40
MIN
16.0
°
5 3050 70
60.0
°
1
#
5s
and
Activation of
the
controller
Selection
Hydraulic
diagram
Selection
Heating/cooling
Selection
Valve rotation
direction
Min. Target
temperature
- Heating
Max. Target
temperature
- Heating
10 70
50.0
°
MIN
55 90
MAX
70.0
°
MFR3
Ver.:1.0r0
Sn: 12345678
T1
65.5
°
Target temperature
- Heating
Min. Target
temperature
- Cooling
Max.Target
temperature
- Cooling
Target temperature
- Cooling
Basic screen
Warnings
Description of the controller
1 2 3 4 5
117 8 96 10
Flow control
Cooling
1
#
2
#
(4) Open in
clockwise
direction
(3) Open in counter
clockwise direction
24.0
°
16 40
MAX
40.0
°
21 40
MIN
16.0
°
5 30
Min. Target
temperature
Max. Target
temperature
Target temperature
10 70
50.0
°
MIN
50 70
60.0
°
55 90
MAX
70.0
°
Min. Target
Temperature
Max. Target
Temperature
Target temperature
Heating / cooling selection
Hydraulic scheme selection
Valve rotation direction
Minimum, maximum and target temperature when heating
Minimum, maximum and target temperature when cooling
Function
Mixer left
Mixer right
Return flow increase
TKM
Valve
Direction of rotation
3
4 *
4
4
*
= Factory setting
Heating
Return flow control
0 1 MC 0 6 0 5 5 3
N6060001

meibes MeiFlow MFR3 Specifications

General

Connection	Screw terminals
Housing material	Plastic
Application	Heating systems
Sensors	Temperature sensor
Display	LCD display
Operating pressure	10 bar
Operating temperature	0 to 60 °C
Voltage	24 V AC/DC

Summary

Commissioning the Controller

Controller Activation

Process for activating the MeiFlow MFR3 controller.

Heating/Cooling Selection

Procedure for selecting between heating and cooling modes.

Hydraulic Scheme Selection

Choosing the appropriate hydraulic diagram for system setup.

Valve Rotation Direction

Setting the correct direction of valve rotation for operation.

Temperature Limits for Heating

Setting minimum, maximum, and target temperatures for heating.

Temperature Limits for Cooling

Setting minimum, maximum, and target temperatures for cooling.

Important Warnings and Precautions

General Safety Warnings

Critical safety advice regarding controller handling and installation.

Operational Precautions

Guidelines for correct valve adjustment and temperature settings.

Controller Description and Components

Component Identification

Identification of buttons, display, and connectors on the controller.

Power Cord Replacement

Procedure and Safety

Steps for safely replacing the power cord and associated precautions.

Assembly and Electrical Connection

Electrical Wiring Details

Instructions for assembly and electrical connection of the controller.

User Operations and Settings

Basic Screen Overview

Understanding the controller's main display interface.

Valve Direction Setting Shortcut

Quick method to adjust the valve rotation direction.

Target Temperature Adjustment

How to set and confirm target temperatures.

Manual Operation Mode

Instructions for operating the mixing valve manually.

Error Display and Handling

Interpreting and resolving error indicators on the controller.

Technical Specifications

Product Data Summary

Detailed technical data including torque, voltage, and dimensions.