7.
Terminate the test program with
"BACK"
.
Testing the three-way valve "Heating/DHW", heat pump and
cylinder heating
Testing the three-way valve and heat pump
1.
Start the test program:
Menu item
&
"
System settings
"
&
"
Tech. service level
"
&
"
Commissioning
"
&
"
Compressor
"
2.
Start the compressor by pressing
"
ON
".
Note
The compressor will start automati-
cally after expiry of a 250 s test.
3.
Check the following temperatures
and record them in the service
report from page 143:
&
The temperature at "
DHW cylin-
der top
" must remain constant
(tolerance: ±1 K).
Otherwise:
–
Check the electrical connec-
tions of the three-way valve.
–
Replace the three-way valve, if
required.
&
The temperature at "
Secondary
flow
" must rise (observe a rise
up to approx. 30 °C).
Otherwise:
–
Check the primary pump
–
Check the electrical connec-
tions of the components con-
cerned.
–
Check the casing temperature
of the heat pump compressor.
Checking the cylinder heating by the heat pump
1.
Set the three-way diverter valve for
cylinder heating with key "
100%
" to
100%.
2.
Observe the temperatures at the
"
Secondary flow
" and the "
DHW
cylinder top
" for approx. 600 s.
Both temperatures must rise.
Otherwise:
&
Check the electrical connections
of the three-way valve
&
Replace the three-way valve if
required
Further details regarding the individual steps
(cont.)
51
Commissioning, inspection, maintenance
55
92
901
GB
Service
Содержание VITOCAL 300
Страница 19: ...Connection diagram Open CLOSE System version 1 cont 19 Preparing for installation 5592 901 GB...
Страница 22: ...Connection diagram Open CLOSE System version 2 cont 22 Preparing for installation 5592 901 GB...
Страница 66: ...Main menu Information A See page 67 Menu structure overview Information 66 Control unit settings 5592 901 GB...
Страница 137: ...Control PCB 137 Connection and wiring diagrams 5592 901 GB Service...
Страница 140: ...Parts lists cont 140 Parts lists 5592 901 GB...
Страница 141: ...Parts lists cont 141 Parts lists 5592 901 GB Service...
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