CIAT COADIS LINE 600 Manuel D'instructions page 38

● Installation
To avoid damaging the CIAT valves or couplings, never torque
tighten to more than 3.5 daN.m.
Use two wrenches, one to hold and the other to tighten to ensure
a tight seal.
Always fit the valve in the right direction. On the 2 CIAT couplings,
the direction of flow should be A → AB (A being connected to the coil and AB to the
hydraulic network).
The maximum allowable differential pressure for our valves (open or closed)
is 100 kPa. We recommend not exceeding 60 kPa. Refer to the valve manual for
specific supplies.
● Design
The positioning of the hydraulic networks is crucial to the correct operation of the
system. Drain valves should therefore be placed at the appropriate points and in
sufficient number. In addition, strainers should be fitted, as well as drains at circuit
high points, balancing tees and shut-off valves on each coil and, if necessary,
discharge valves.
● Pressure safety:
The installation must be protected against any risk of overpressure. Special care
must be taken to protect against the risks linked to expansion of the energy transfer
fluid and to the total hydrostatic pressure.
● Filtration:
An efficient filtration system (recommended efficiency of 0.5 mm) should be fitted on
the supply water and return water lines.
● Flushing:
The system must be flushed completely and filled with treated water to prevent the
build-up of scale or sludge in the circuit. When flushing the system, open the thermo
or modulating valve on the unit to prevent any sludge or impurities from entering the
coil:
- Opening the thermo valve:
There are two options:
1) Remove the servomotor and fit the cap, which will cause pressure to be applied
to the shaft, thereby opening the valve.
2) Request that the control valve opens via the controller.
A A AB AB
B
EN - 6