Viessmann VITOCAL 242-G Installation And Service Instructions Manual page 47

System version 4
7 Underfloor heating circuit tem-
perature limiter
8 Plate-type heat exchanger
9 Heating water buffer cylinder
qP Underfloor heating circuit
qW Heating circuit pump, direct heat-
ing circuit
qE DHW circulation pump
qR Natural cooling extension kit
qU KM BUS distributor
qI Vitotrol 200 remote control
qO Room temperature sensor
wP Extension kit for cooling circuit
with mixer
wQ Outside temperature sensor
wW Heating water buffer cylinder tem-
perature sensor
wU DHW circulation extension
wI Heating circuit extension
wO Connection panel
eP Contact humidistat
(cont.)
eW Three-way diverter valve heating/
eE 2-way motorised ball valve
eR Frost stat
eT Circulation pump (primary cooling
rP Heating circuit pump, mixer circuit
rQ Flow temperature sensor, mixer
rW Three-way mixer - mixer motor
tP Extension kit for one heating cir-
zP Radiator heating circuit
wE Solar collector
wR Collector temperature sensor
wT Diaphragm expansion vessel,
wZ Solar circuit extension
Preparing for installation
cooling
circuit pump)
circuit
cuit with mixer
Only in conjunction with
Vitocal 242:
solar circuit
47