Viessmann VITOCAL 242-G Installation And Service Instructions Manual page 68

Installation sequence
Connecting the external electrical components
Collector temperature sensor (type Pt 500, only for the Vitocal 242)
A Terminals in the control panel
B Collector temperature sensor
Connect temperature limiter to underfloor heating system
When using the integral secondary circuit pump as a heating circuit pump
1. Pull plug or integral secondary cir-
cuit pump A from X16 of main
PCB B (for location of main PCB,
see page 55).
68
(cont.)
Solar collector installation
instructions
2. Plug connector of built-in second-
ary circuit pump into socket on tem-
perature limiter C.
3. Push plug of temperature limiter
onto X16 on main PCB B.