Starting - Technibel PHT 13 Installation Instruction

6.3 - RS 485 COMMUNICATION INTERFACE (MODBUS
protocol)
• Code 70250056.
GB
• After removing the side panel, also remove the front panel A (remove the
three retaining screws B and pull the panel downwards).
• Secure the communication interface C on the left-hand side of the electric
panel.
• Connect the cable (supplied) between the communication interface C and
the controller D.
• Connect the module's 230 VAC power supply in the following manner with
the black and blue wires delivered with the accessory.
• Connection of the communication bus and protocol detail:
refer to the corresponding technical file.

7 - STARTING

Before carrying out any work on the installation, make sure that it is switched off and that access to it is prevented.
Any work must be carried out by personnel qualified and authorised to work on this type of machine.
7.1 - CHECK
• That hydraulic connections are properly tight and that the hydraulic circuit functions correctly:
- purge of circuits,
- position of valves,
- hydraulic pressure (2 bar).
• That there are no leaks.
• That the machine is stable.
• That the power cables are well fixed to their connection terminals. Terminals that are poorly tightened may cause
overheating and malfunctions.
• That the electric cables are well insulated from any sections of sheet metal or metal parts which could damage them.
• That probe, control and power cables are properly separated.
• That the machine is earthed.
• That there are neither tools nor other foreign objects in the units.
7.2 - WATER QUALITY
• In order for the heat pump to operate under good conditions and provide optimum performance, it is essential to ensure that
the system's water circuit is clean. If the water circuit becomes clogged, this will significantly affect the machine's
performance. The circuit must therefore be cleaned with suitable products in compliance with current standards as soon as
it is installed, both for new and renovation work.
We recommend the use of products which are compatible with all metals and synthetic materials and approved by official
bodies.
Recommendations regarding water quality:
- PH: 6 to 9
- TH: 10 to 20°F
- Dry material in suspension: < 2 g/l
- Granulometry: < 0.4 mm
Any disorder which may occur on our machines due to the poor quality of the fluid in the installation will not be covered by
the TECHNIBEL warranty.
C interface
IMPORTANT NOTE
- Chloride: 50 mg/l maximum
- Conductivity: 50 to 500 µS/cm
- Resistivity: 1 to 10 kΩ
- Fibre: no fibres
12
B
B
B
D C
E Filter
Blue (N2)
Existing wires to
3 4
Black (U2)
disconnect from the
1 2
filter and to connect to
the wires of the
accessory
Wiring board
N2 U2
2
A
E