RDZ FLOOR-S, Инструкция по установке и техническому обслуживанию

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US FLOOR / FLOOR
Minichiller inverter Duo
18
When the three-way valve is de-energized, it is turned to B position (towards the plant side).
Looking at the front side of the valve, the way normally open (B) is in the left side.
7.4.6 Discharging of the plant circuit
If it‘s necessary to drain completely the indoor unit, connect with a pipe to the service valves (both service valves for the models
FLOOR/FLOOR-S). Then unscrew the cap of the service valve and connect to the hose pipe joint connecter a pipe of 14 mm (inner
diameter) which must be connected to the drain water, then proceed to evacuate the plant circuit by unscrewing the knurled nut.
After the end of the process, close again the knurled nut and screw the cap. Refer to the previous paragraph regarding the
position and the utilization mode of the valves.
During the operations of charging/topping-up, the plugs of the air vent valves must be
partially unscrewed to allow air to flow freely out of the valves.
The models FLOOR/FLOOR-S are equipped with two air vent valves, one on the other DHW
technical side puffer and the other on the puffer of the plant side.
(2) Stopper of the air vent valve
When it’s necessary to top up the circuit of the plant or to adjust
the title of glycol (in the cases described in Chapter 25), you can
use the service valves. Unscrew the cap of the service valve and
connect to joint connector a hose pipe of 14 mm (inner diameter)
which should be connected to the water supply, then unscrew
the knurled nut to load the plant circuit. At the end of the
operation, retighten the knurled nut and screw the cap. At any
case, it‘s recommended to use an external water tap for loading
the plant circuit, this should be done by the installer.
(A) service valve of plant side puffer tank (models
FLOOR/FLOOR-S)
(B) service valve of DHW technical side puffer tank
(3) knurled nut
(4) stopper with gasket