Filling The System; Draining The Nuos C; Ylinder Unit - Ariston NUOS FS 200 Instructions For Installation And Servicing

6.22 F S
ILLING THE YSTEM
6.23 D NUOS
RAINING THE
C U
YLINDER NIT
1. Check all pipework connections have been made.
2. Check PRV discharge pipes and tundish are correctly fitted.
3. Check all pipe connections are tight and no joints have been left
unsoldered.
4. Check power is off.
5. Check wiring connections have been made.
6. Turn all isolating valves off.
7. Turn all the taps off.
8. Check any drain plugs fitted are closed.
9. Turn on mains water, allow system to fill up to first isolating valve.
Turn on a hot tap. Open isolating valves and allow the NUOS to fill
and let water pass through the system to the open hot tap, this will
expel most of the air from the system and fill the NUOS vessel.
10. Close the hot tap.
11. Check for leaks.
Typical drain arrangement and system designs will vary.
1. Turn power off to ensure NUOS is not operated when empty.
2. Turn off cold supply to NUOS.
3. Shut off hot water feed from NUOS.
4. Connect hose to drain cock and place other end in sink, basin etc.
5. Open drain cock and open TPR valve to vent cylinder.
Hot Out
Red Collar
Hot
Isolating
Valve
Cold In
Blue Collar
Drain
F . 6.23 NUOS C
IG A
Hot
Supply
to Taps
Cold
Feed
Cold Supply
to Taps
D
YLINDER RAIN
35
35