Switching Points; Components In The Delivered Condition; Allocation To Control Unit Types - Viessmann VITOPLEX 200 Type SX2A Technical Manual

Control units
(cont.)
Vitotronic 300-K, type MW1
Vitotronic 300- K

Switching points

110
100
90
80
75
70
60
50
40
30
C
20
10
+20 +15 +10 +5
Outside temperature in °C

11.2 Components in the delivered condition

Allocation to control unit types

Vitotronic
Type
Components
Boiler water temperature sensor
Cylinder temperature sensor
Outside temperature sensor
Contact temperature sensor (see acces-
sories)
OIL/GAS BOILERS
M M
D E
A
B
G
F
0 -5 -10 -15 -20
100 200
GC1 GW1
x x
x
x
Weather-compensated, digital cascade and heating circuit control unit:
■ Type MW1S: For installation in control panels (see separate data-
sheet).
■ For multi-boiler systems
■ With sequential boiler strategy
■ For up to two heating circuits with mixer (a further 32 Vitotronic 200-
H heating circuit control units can be connected via the LON).
An extension kit (accessory) is required for each heating circuit with
mixer
■ In conjunction with the Vitotronic 100, type GC1:
For two-stage or modulating burners, if installed
■ With cylinder thermostat
or
Control of a cylinder primary system with mixer assembly (only avail-
able as an alternative to the control of a constant return temperature
raising facility with a regulated three-way valve)
■ With boiler protection functions subject to system version:
– Distribution pump
or
– Shunt pump
or
– Control of a constant return temperature raising facility with a
regulated three-way valve (only available as an alternative to the
control of a cylinder primary system with mixer assembly)
■ With integral diagnostic system
■ Programming unit with plain text prompts
■ Via external contacts:
– Heating program changeover
– Requirement to default set flow temperature
– Blocking the burner
– Mixer "Open" or "Closed"
■ With capability to communicate via LON (LON communication mod-
ule and terminators are part of the standard delivery)
A Setting options for the high limit safety cut-out of the Vitotronic
boiler control units (delivered condition 110 ºC)
B Setting options of the control thermostat of the Vitotronic boiler
control units (delivered condition 95 ºC)
C Low-end boiler water temperature (see operating conditions
page 5 to 11)
D Burner starting points
E Burner shutdown points
F Selected heating curve
G Set maximum boiler water temperature
300 300-K
GW2 MW1
x
x x
x x
x
11
MW1S
x
x
x
VIESMANN
53