Hydraulic Connections - CIAT COADIS LINE 600 Benutzerhandbuch

The ducts used may be coated with an anti-condensation material. (Fibreglass
12-25 mm thick)
- Remove the plug from the fresh air inlet.
- Position the duct on the connection sleeve.
- Place a retaining clamp around the duct in contact with the connection sleeve.
- Tighten the clamp and check the integrity of the connection.
To protect itself effects of condensation (no open valve when the ventilation is
cut).

4.3. Hydraulic connections

Water always flows into the bottom of the coil and exits at the top.
The pipes are positioned in the suspended ceiling as shown in Fig. 7.
The coils are equipped with a header coupling with flat face swivel nuts with a female
thread, diameter G½˝ and an O-ring. (Supplied by CIAT) .
The header coupling is equipped with an air bleed valve (Fig. 8 - a) at the high point
with partial draining at the low points (Fig. 8 - b) that can be manoeuvred using
a 7 mm Allen key or a flat-blade screwdriver.
Recommendations for venting or draining the unit.
Before carrying out work on the unit, check that the power supply is cut off and
locked.
Only experienced, qualified technicians may perform installation and maintenance
work on the machine. They must be provided with personal protective equipment
(PPE).
The technician must take all the necessary precautions to recover the water drained
during venting or draining procedures.
He must pay particular attention to the risks of overflowing and splashes.
- To vent the air, loosen the drain screw (Fig.8, rep. a) by a maximum of 3 turns.
- To drain the unit, ensure the unit is hydraulically isolated from the network and
loosen the drain screw (Fig.8, rep. b) by a maximum of 3 turns.
IMPORTANT:
The coil can be partially drained, however precautions must be taken during winter
if the installation is shut down. To drain completely, air must be blown through the
circuit.
If the hydraulic connections are completed, it is not necessary to insulate the valves
to prevent condensation (unless they are specific valves). A naturally inclined ABS
auxiliary condensate drain pan is supplied with the unit. This recovers condensate
from the valves and coil (from the main pan) and drains it via gravity or using a
condensate drain pump supplied as an option.
EN - 5
EN