Overview Of Electrical Connections - Viessmann Solar EM-S1 Extension Installation And Service Instructions Manual

Solar EM-S1 Extension Installation / Service

Overview of Electrical Connections

Legend
Plug 120VAC
P1sF Solar circuit pump
Only use a circulation pump with PWM control.
P3fH Transfer pump
Power supply
fÖ
fÖA Power supply for accessories
Low voltage connections
PWM1 Speed control, solar circuit pump
TS1% DHW tank temperature sensor NTC 10 kΩ
TS2& Collector temperature sensor NTC 20 kΩ
TS3 No function
PlusBus
jF
CAUTION
The electronic modules are static
sensitive. To avoid damage caused by
static discharge, follow Electro-Static
Discharge safety procedures.
Note: Apply strain relief to on-site cables.
Secure individual wires directly to each plug using
cable ties.
Seal any unnecessary apertures with cable
grommets (not cut open).
Connections
7