Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 44

Installation
Electrical Connections
Low temperature protection package connections
Legend
A Boiler pump
B Return temperature 3-way valve
Alarm output connections
Legend
A Central fault messaging receiver (field supplied)
Secondary heat generator activation connections
Legend
A Secondary heat generator activation signal
44
(continued)
DIN rail X1
Alarm
power supply
Max. 120VAC/5A
DIN rail X1
DIN rail X1
Vitoligno 300-C Installation/Service
Boiler pump plug sL terminals sL-1, sL-G, sL
Rated voltage ................................................... 120VAC
Maximum rated current .............................................. 2A
Return temp control mixing valve plug terminals a,S-1, 2, N
Rated voltage ................................................... 120VAC
Maximum rated current output ................................. 0.1A
Note: Maximum output 10 full load amps shared between
120VAC outputs sL a,S
Refer to the low temperature protection package
Installation Instructions.
gÖA is a dry contact connect, with closure on terminals
1 and 3 during a fault condition.
Rated voltage ................................................... 120VAC
Maximum rated current ........................................... 5FLA
jL is a dry contact connect, with closure on terminals
1 and 3 for secondary heat generator activation.
Rated voltage ................................................... 120VAC
Maximum rated current ........................................... 5FLA