Honeywell TFU 22 Installation And Operating Instructions

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The TFU 22 remote controller measures the room temperature
and transfers the measured values to the heating system con-
troller.
The operating mode keys allow you to select the operating mode
and timer program and to activate and deactivate the lock.
By means of the regulator wheel, you can adjust the set desired
temperature by ± 7 °C and also the time settings in order to
adjust the timer program to your needs.
The TFU 22 is compatible with the following control systems:
•
MCR 35, 36, 200
•
DHC 23
•
Excel 500
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Figure 1: Installation
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1. Place a screwdriver in the recess at the base of the housing.
2. Carefully pull the opening strap outwards.
3. Remove the housing cover upwards.
Figure 2: Removing of housing cover
4. Screw remote controller onto the wall.
Figure 3: Drill holes and housing dimensions
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– Connect the cable coming from the controller.
Figure 4: Wiring diagram
Wiring of the terminals:
1 GND 4 not used
2 Room sensor 5 + 10 V
3 Desired value 6 not used
Connection to MCR 200-45
For other controllers, please refer to the respective controller
instructions.
Connection to MCR 36
Connection to DHC 23 or MCR 35
Connection to Excel 500
XF 521 A analog input module
Desired temperature to AI 1
Room temperature sensor to AI 2
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– Return cover to housing by placing top edge against back-
plate and snap lower part of cover onto housing.
Figure 5: Returning cover to housing