Viessmann Vitodens 242-F Installation And Service Instructions Manual page 63

Matching the control unit to the heating system
System version 5
One heating circuit without mixer A1, one heating circuit with mixer M2 (with extension kit), one heating circuit
with mixer M3 (with extension kit) and low loss header (with/without DHW heating)
wP
wQ
1
Fig. 56
Vitodens 242-F
1
Outside temperature sensor
2
Heating circuit without mixer A1 (heating circuit 1)
3
Heating circuit pump A1
4
Heating circuit with mixer M2 (heating circuit 2)
5
Flow temperature sensor M2
6
Heating circuit pump M2
7
Extension kit for one heating circuit with mixer M2
8
Heating circuit with mixer M3 (heating circuit 3)
9
Function/system components
Operation with LPG
System with only two heating circuits with mixer, with extension kit for
mixer (without unregulated heating circuit) with DHW heating
System without DHW circulation pump:
Heating circuit pump A1 connected at internal H1 or H2 extension
System with DHW circulation pump:
Heating circuit pump A1 connected at AM1 extension, terminal A1
DHW circulation pump connection at AM1 extension, terminal A2
or
DHW circulation pump connected at internal H1 or H2 extension
System with low loss header
3
6
4 7
2
M
8
qT
qR
Commissioning, inspection, maintenance
(cont.)
9
5
qP
qQ
qW
M
qE
Temperature limiter to restrict the maximum tem-
qP
perature of underfloor heating systems
Flow temperature sensor M3
qQ
Heating circuit pump M3
qW
Extension kit for one heating circuit with mixer M3
qE
qR Low loss header
Flow temperature sensor, low loss header
qT
Solar collectors
wP
Collector temperature sensor
wQ
Setting
Code
Group
82:1 "General"
00:8 "General"
53:2
—
—
—
04:0 "Boiler"
—
—
—
—
63