elco THISION L - Water Flow Check

36
&KHFNZDWHUÀRZ
7KHZDWHUÀRZWKURXJKWKHERLOHUFDQ
be checked with two different me-
thods shown below.
ǻ7PHDVXUHPHQW
Check the temperature difference
RYHUWKHERLOHUǻ7ÀRZUHWXUQZKHQ
the boiler is running on 100% load.
7KHQRPLQDOǻ7LV.DQGPXVWEH
at least between 10K and 20K for se-
cure boiler operation. An indication of
WKHDFWXDOÀRZUDWHFDQEHIRXQGZLWK
the following calculation (see table
EHORZIRUQRPLQDOGDWD
q
actual
 ǻ7
nominal
ǻ7
measured
) * q
nominal
[m
3
/h]
ǻSPHDVXUHPHQW
Check the pressure difference over
WKH ERLOHU ǻS ÀRZUHWXUQ ZKHQ WKH
boiler pump is running (burner on
LVQRW UHTXLUHG7KHQRPLQDOǻS IRU
each boiler type can be found in the
WDEOHEHORZDFWXDOǻSPXVWEHZLWKLQ
ǻSQRPǻ3ǻSQRP$QLQ-
GLFDWLRQRIWKHDFWXDOÀRZUDWHFDQEH
found with the following calculation
VHHWDEOHEHORZIRUQRPLQDOGDWD
q
actual
 ¥ǻS
measured
ǻS
nominal
) * q
nominal
[m
3
/h]
Commissioning
&KHFNZDWHUÀRZ
:DWHUÀRZGDWD
THISION L 50 65 - 65L 85 100 120 145
1RPLQDOÀRZUDWH [m3/h] 1.9 2.6 - 2.4 3.4 4.0  5.6
ǻ7DWQRPLQDOÀRZUDWH [°C] 20
ǻSDWQRPLQDOÀRZUDWH [kPa] 9 16 29 15 22 34