Techem split 4.1.3 Manual De Operación página 18

Installation
The calculator must be accessible at all times and readable without further aids.
Assembly on volume measuring section up to 100 m³/h
• Only admissible between 15 °C and 90 °C medium temperature.
• In case of media temperatures exceeding 90 °C or lower than 15 °C, the calculator must
be mounted separately.
Wall assembly, with mounting kit (art. no.: 130026) 
1 Select a dry, easily accessible location.
Observe the length of the pipes at the calculator.
2
Mount the calculator on the wall using the fastening material.
3
Connection of the temperature sensors
• The temperature sensor type (Pt 500) must match the information on the calculator
name plate.
• Select the connection lines for the temperature sensors as short as possible. Wind the
cable length not required up in the vicinity of the calculator and fix it. Joint laying in cable
ducts or on cable racks is not permissible. The minimum distance between low-voltage
lines of 5 cm according to EN1434-6 must be adhered to.
• Symmetrical installation of the temperature sensors is assumed.
• Temperature sensors possible as 2 and 4 wire sensor pairs.
• Press the sensor cables into the strain relief rail.
2 wire temperature sensors (model PS)
!
The cables from 2 wire temperature sensor pairs may neither be shortened nor
extended. These temperature sensors may only be installed as delivered.
• The maximum cable length for the 2 wire temperature sensor Pt 500 is 10 m.
• The sensor in the warmer section (T
colder section (T
Bridging is not required. 
4 wire temperature sensors
• Optionally, also 4 wire temperature sensors, such as head sensors, can optionally be
connected to the calculator.
• The maximum cable length for the 4 wire temperature sensor Pt 500 is 25 m.
• The sensor located in the warmer section (T
The sensor located in the colder section (T
(attention: connections for the cold meter vary). 
18
) to clamps 7 and 8 (attention: connections for the cold meter vary).
RL
4
) is connected to clamps 5 and 6, the sensor in the
VL
) is installed on clamps 1, 5, 6 and 2.
VL
) is installed on clamps 3, 7 , 8 and 4
RL
7
5