CALEFFI 750706 매뉴얼 - 페이지 4

{카테고리_이름} CALEFFI 750706에 대한 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. CALEFFI 750706 16 페이지. Direct heat meter

2) User circuit diagram - 2-way zone valve regulation

Central heating system

Flow meter + probe pockets (if threaded connection)

p (m w.g.)

The broken red line indicates the pressure drop at the permanent flow rate Qp (Dp=3,5 m w.g., for threaded connections only).

1/2"

3/4"

5,0

7,9

17,8

DN 50

DN 65

DN 80

142

System

kWh

1 1/4"

1 1/2"

17,8

33,0

DN 100 DN 125 DN 150 DN 200

223

360

540

900

Maintenance work

Strainer cleaning

It is periodically necessary to clean the strainer on the flow pipe

designed to protect the volume meter.

By observing the instant flow rate and flow-return temperature

difference values (significantly lower flow rate compared to the nominal

value and significantly higher temperature difference), it is easy to find

out whether the strainer is clogged and clean it.

p (kPa)