Viessmann VITOCAL 300-G Installation And Service Instructions Manual page 102

Installation sequence
Electrical connections
G Lag heat pump 2
Connection at the contact for "Exter-
nal demand"
H Zero volt contact "External
demand"
K Lag heat pump 3
Required parameters
Appliance
Lead appliance
Lag heat pump
Note
Set the parameters for all lag
heat pumps.
102
(cont.)
L Central fault message input, lag
heat pump
Open contact X3.10 / X3.11 triggers
a message (see central fault mes-
sage, page 99).
Parameter Ó setting
"System definition"
■ "System scheme 7000" Ó "0" to "10"
■ "External extension 7010" Ó "1"
■ "Cascade control 700A" Ó "1"
■ "Output lag heat pump 700B" Ó "0" to "255"
■ "No. of external heat pumps 5735" Ó "1" to
"3"
"System definition"
■ "System scheme 7000" Ó "11"
■ "Cascade control 700A" Ó 0
■ "Set flow temperature, external demand
730C" Ó "0" to "70" (see page 202)