General Installation Instructions - Techem vario 4.1.3 Manual De Instrucciones

Place the assembly pin over the temperature sensor.
6
Fix the brass screw fitting on the sensor using the assembly pin. For this purpose, the
7
installation direction of the grooved pin is to be observed.
Insert the temperature sensor with the screw fitting into the ball valve.
8
9 Tighten the brass screw fitting manually (without tool).
!
When installing in dip sleeves, the sensors must be pushed in down to the
bottom of the dip sleeve and then fixed.
Sealing
• After installation and inspection, the temperature sensor and the interface between
meter and pipeline must be sealed.
Information regarding connection of 4 wire temperature sensors
• Optionally, also 4 wire temperature sensors, such as head sensors, can optionally be
connected to the computer unit.
• The maximum cable length for the 4 wire temperature sensor Pt 500 is 25 m.
• The sensor located in the warmer section (T
sensor located in the colder section (T
connections for the cold meter vary).
Cold meter
This chapter only describes the properties and functions of the cold meter which differ
from those of the heat meter.
Operating conditions
• Flow sensor protection class
• Medium temperature

General installation instructions

• Always mount the computer unit separately from the volume measuring section
(e.g. using an optional mounting kit).
• Insulate the volume measuring section in an impermeable manner.
• This meter is not suitable for glycol/water mixtures (incorrect measurement).
• Lay the connection of the volume measuring section and temperature sensor to the
computer unit with a drip loop for condensation water.
• Always feed the cable into the computer unit from below.
Assembly of the volume measuring section
• Preferred installation location (condition as supplied):
- Cold meter outlet/high temperature
• Optional installation location (configuration change necessary)
- Cold meter inlet/low temperature
Installation of the temperature sensors
Information regarding connection of 2 wire temperature sensors (model PS)
• The sensor in the colder section (T
warmer section (T
Information regarding connection of 4 wire temperature sensors
• The sensor located in the colder section (T
• The sensor located in the warmer section (T
9

VL
) to clamps 7 and 8. Bridging is not required. 
RL
) is installed on clamps 1, 5, 6 and 2. The
VL
) is installed on clamps 3, 7 , 8 and 4 (attention:
RL
9
IP 65
Θ: +3 °C...50 °C
4

) is connected to clamps 5 and 6, the sensor in the
) is installed on clamps 1, 5, 6 and 2.
VL
) is installed on clamps 3, 7 , 8 and 4.
RL
4
8
21