Installation Procedure - CALEFFI CONTECA EASY ULTRA Manual

Guidelines for first installation
It is good practice to install shut-off valves upstream and downstream from the meter in order to facilitate installation and maintenance, if
required.
A filtering device must be provided upstream of the flow rate meter in order to protect the meter.
With a diameter of 1/2" to 1 1/2", this strainer is already inside the flow temperature pocket.

Installation procedure

• Install the hydraulic components (probe pocket and flow meter) in accordance with the guidelines provided in paragraph "Hydraulic installation
diagrams" on this page;
• After installation, wash the pipes and carry out a pressurised test;
• Check the saturation level of the strainers and, if necessary, clean them;
• After completing installation of the hydraulic parts, install the CONTECA
connection on pages 5 and 6.
• Insert the temperature probes into the corresponding pockets in line with the flow direction: the flow probe (red label) must be installed on the
flow pipe, while the return probe (blue label) should be on the return pipe.
• At the end of the installation process the main heat meter components (electronics unit, temperature probes and volume meter) should undergo
lead sealing. Lead sealing must be performed by qualified technicians in accordance with the instructions on pages 9 and 10 ("Lead
sealing procedure").
Hydraulic installation diagrams
The flow meter must be fitted on the return pipe.
The hydraulic diagrams provided below show:
a) Flow meter positioning
The flow meter should preferably be installed in a horizontal position, with the axis of the turbine vertical, observing the flow direction as indicated
by the arrow on the body. The position of the flow meter, where possible, should result in a zero flow rate when there is no service.
b) Probe positioning
The temperature probes (by means of the pocket or sleeve according to the DN) must be positioned on the corresponding flow/return pipes. The
corresponding pipes are the pipes carrying the same flow rate when the flow has started.
1) Guideline diagram of the system with metering on the multiple circuit manifold.
EASY ULTRA electronic unit: follow the instructions for electrical
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