Z series combination household (townhouse)central air conditioning unit
17
Note:
This accessory h ad been installed inside the u nit, t esting p ersonnel m ust conduct p ressure
setting when water fill pressure is lower than 0.15MPa and must according to actual situation. It
shall be done by professional
10.2 Safety valve
Safety valve is for preventing system pressure from rising suddenly,
such as water hummer, over filled, on-off or failure of valve and
fluctuation of system water temperature with the change of ambient
and load, and fluctuation of pressure of system for heat expansion and
shrinking of water capacity. When pressure exceeds setting pressure of
safety valve, the valve will open automatically to release pressure and
prevent damage to system for over- high pressure.
Working pressure of valve should normally be set about 10% higher
than operation pressure of system and be installed at place that is easier
to product pressure convergence, such as near expand water case or
water pump. There usually is a drainage pipe at outlet of valve for easy drainage. User can manually turn the
hand wheel to release pressure.
Note:
This accessory h ad been installed inside the u nit, unprofessional personnel p lease don’t turn o r
assemble it.
10.3 Auto exhaust valve
If air in water system can not be exhausted, following effects will
result:
1) Temperature at some parts will be uneven.
2) Noise is produced.
3) Oxygen in the air would cause metal oxygenation .
4) Too much air would damage water pump.
Auto exhaust valve should be installed at the top of pipeline or the
place where gas is easily gathered and be installed vertically. Self-close
valve or cut-off valve should be installed at bottom of exhaust valve for
convenient charging of water or repairing .Exhaust valve cannot be installed at place that is easy be frozen.
46.0
G3/8〞
10.5
70
G1/2
〞
G1/2
〞
Release pressure
manually
Black ABS
(29)
