Chapter Ⅱ Installation（5. Installation and Heat Insulation for Pipelines of Water System）
19
and the matching among water level switches. Please pay attention to the following points
during installation:
（
1
）
The water-getting outlet of user should be 50mm (minimum) higher than the circulating
water outlet to prevent water-lacking during operation.
（
2
）
The overflow port should be 50mm (maximum) higher than the water level switch to
prevent overflow of water tank. The overflow port must be connected with connection
pipe and then lead it to the flow drainage outlet;
（
3
）
The hot water inlet and the user back water outlet should point at the water level switch
to prevent impacting of water flow and then cause wrong action of switch.
（
4
）
If the auxiliary electric heating device is installed on the water tank, the position of the
auxiliary electric heating device should be lower than the user water-getting position.
（
5
）
Water temperature sensor must be installed under the user water-getting outlet, and it
should be placed into the blind pipe.
（
6
）
The valid volume of water tank must be ensured. The valid volume of water tank is the
volume between the user water-getting outlet and the high water level.
4.3.2 Notices for installing water tank
1）After the water tank is filled with water, its weight will be great, it must be placed in the
ground or floor than can sustain the weight;
2）The water tank must be installed in the base with reliable fixation;
3）If the water tank is installed outdoors, it should have waterproof protection to prevent rain
from entering into water tank and pollute the water quality;
5. Installation and Heat Insulation for Pipelines of Water System
5.1 Installation of Water Pipe
5.1.1 Selection of pipe material
1）The PP-R pipe materials used in the pipeline system should be manufactured from the
same factory and the same raw materials, the performance should satisfy the requirement of good
temperature resistance and pressure resistance.
2）The pipe materials and parts should have the valid inspection report issued by authoritative
inspection unit and quality certificate issued by manufacturer. It should indicate the name of raw
material, specification and trademark on the pipe, and should indicate production batch number,
quantity and date of production on the package.
3） Appearance and quality of pipe materials and parts should satisfy the following
To Next Page
Loading...
Need help?
General
