Household (Townhouse) Central Air Conditioning Unit
17
necessary to assembly and cleans the lter after a certain period (say, 3 months) to remain normal operation.
10. Usage Instruction for Accessories
10.1 Auto water ll valve
Application specication The auto water ll valve contains pressure regulation and pressure decreasing
settings, it can automatically maintain pressure in system, remain
system hydraulic pressure to a steady value. When system pressure
is lowered, valve turns on automatically and lls water into system;
when it reaches set pressure, valve closes automatically.
When auto water ll valve is under normal operation, when system
hydraulic pressure is larger than the set pressure, water fill valve
contains inverted function, i.e., even if system pressure increased,
water in the system will not flow back. When system repairing or
draining, screw manual cut-off valve tightly and turn off water source.
Pressure setting
Setting for auto water ll valve is determined by system working
pressure, and it is able to adjust automatically. When adjusting, auto
water ll valve is in working state. Connect pressure meter to joint of G1/4", loosen tightened nut and adjust
the pressure adjusting screw, when adjusted pressure to system working pressure, tighten nut.
Note: if pressure of water source is lower than the set pressure of auto water ll valve for a long time
(abnormal working state), add a one-way valve or cut-off handwheel of manual-closed auto water ll valve at
the exit of auto water ll valve. Dimension of joint of water ll pipe is G1/2";
Note:
This accessory h ad been installed inside the u nit, t esting p ersonnel m ust conduct p ressure
setting w hen w ater fill p ressure i s lower than 0.15MPa and m ust according t o actual situation. It
shall be done by professional
10.2 Safety valve
Safety valve is for preventing system
pressure from raising suddenly, such as water hummer, over lled, open/close
or ineffective of valve and uctuation of system water temperature with the change
of ambient and load, and uctuation of system pressure with the change cubage of
water for temperature. When pressure exceeds the setting for safety valve, the valve
will open automatically to release pressure and prevent system pressure from going
too high and system breaking.
Working pressure of valve should be set about 10% larger than system operation
pressure normally, and it should be installed at place that is easy to product pressureconvergence, such as near
expand water case or water pump.
Note:
This accessory h ad been installed inside the u nit, unprofessional personnel p lease don’t turn o r
assemble it.
To Next Page
Loading...
