Viessmann VITOCAL 350-A Installation And Service Instructions Manual page 82

Commissioning, inspection, maintenance
Commissioning the system
External functions
External function
External demand
External starting of the compressor;
mixer in control mode or OPEN
External changeover of the operating
mode of various system components
External blocking of compressor and
pumps
External blocking of the compressor;
mixer in control mode or CLOSED
Central fault message
Parameters for instantaneous heating water heater
Parameter
"Electr booster heater"
"Enable instantaneous heating water heater 7900"
"Output for instant. heating water heater at power-OFF 790A" "1" 3 kW
Enable instantaneous heating water heater for DHW heating
Parameter
"DHW"
Ó
"Enable electric heaters for DHW heating 6015"
Parameters for external heat generators
Parameter
"External heat source"
"Enable external heat source 7B00"
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Parameter
If applicable "Internal hydraulics"
"Flow temperature for external de-
mand 730C"
"System definition"
"Effect of external demand on heat
pump/heating circuits 7014"
"System definition"
"System components for external
changeover 7011"
"System definition"
"Operating status for external
changeover 7012"
"System definition"
"Duration of external changeover
7013"
"System definition"
"Effect of external blocking on
pumps/compressor 701A"
"System definition"
"Effect of ext. blocking on heat
pump/heating circuits 7015"
"System definition"
"Effect of external blocking on
pumps/compressor 701A"
No parameters need to be set.
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(cont.)
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Setting
"1"
"2" 6 kW
"3" 9 kW
Setting
"1"
Setting
"1"
Setting
Set flow temperature for ex-
Ó
ternal demand
"0" to "7"
(Observe parameter "Flow
temperature for external de-
mand 730C")
"0" to "10"
"0" to "3"
"0" to "12"
"0" to "31"
"0" to "8"
"0" to "31"