104
10.
Set the operating mode selector to
"
9
".
See operating instructions
Checking the diaphragm expansion vessel and the heating cir-
cuit pressure
Carry out this test on a cold system.
Note
Only use anti-corrosion agents that have
been approved for heat pumps with
DHW heating via single-walled heat
exchangers (DHW cylinders).
1.
Drain the heating water side of the
boiler system and reduce the pres-
sure until the pressure gauge indi-
cates "0".
2.
If the pre-charge pressure of the
expansion vessel is lower than the
static system pressure, top up with
sufficient nitrogen to raise the pre-
charge pressure above the static sys-
tem pressure.
Example:
Static head
(distance between the
heat source and the high-
est heating surface)
10 m
Equals static pressure
1 bar
3.
Top up with water, until the filling
pressure exceeds the pre-charge
pressure of the expansion vessel.
On a cold system, the filling pressure
must be approx. 0.2 bar higher than
the static pressure.
4.
During commissioning, mark this
value on the pressure gauge as min-
imum filling pressure.
Checking the compressor casing temperature
1.
Start the heat pump and let it run for
at least 10 min (see page, point 1 and
2).
2.
Measure the temperature of the com-
pressor casing exterior while it is in
operation.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5368 522 UAE
Содержание Vitocal 300-G BW
Страница 57: ...57 6 1 2 4 3 5 A 5x Installation sequence Opening the heat pump 5368 522 UAE Installation...
Страница 188: ...188 VITOCAL 300 205 025 011 203 202 200 206 207 204 201 010 025 A 026 Parts lists Parts lists type BWC cont 5368 522 UAE...
Страница 194: ...194 VITOCAL 300 205 203 202 200 206 207 204 201 010 026 025 A 025 Parts lists Parts lists type BW cont 5368 522 UAE...
Страница 213: ...213 5368 522 UAE...
Страница 214: ...214 5368 522 UAE...
Страница 215: ...215 5368 522 UAE...