Boiler Connections
32
Installation Examples
(continued)
System Layout 4
Vitodens 100-W, WB1A 8-24, 8-30 with...
– DHW storage tank
– Low-loss header
– one high-temperature heating circuit
– one low-temperature heating circuit
–
Viessmann Vitotronic 050, HK1M controller
Legend
Legend
5
5
8
1
7
7
5
1
.3
M
O
D
I
F
N
E
B
J
H
K
C
R
G
A
Q
P
A1
B1
D1
C1
See next page for notes and
explanation of this drawing.
A1
B1
D1
C1
A
Boiler power pump module
Primary pump (boiler PPM control)
(field supplied)
B
Honeywell switching relay for
heating circuit
E
Heating circuit pump
(field supplied)
C
Honeywell switching relay for
DHW
H
control
DHW circulating pump (field
supplied)
D
Vitotronic 050, Model HK1M
Digital indoor / outdoor heating
circuit control unit & pump control
Vi. Part No. 7134 627
Heating circuit pump (field
supplied)
E
Radiator heating circuit
F
Underfloor heating circuit
G
Low loss header
-Max. flow 17.5 USGPM
Vi. Part No. 7134 791
-Max. flow 35 USGPM
Vi. Part No. 7134 792
H
DHW indirect storage tank
I
Outdoor temperature sensor
J
Limit thermostat (optional)
See note 1
K
DHW tank aquastat, Honeywell
Part No. L4008A1031,
Vi. Part No. 9560 985
M
Mixing valve motor / control
N
Mixing valve supply temperature
sensor
O
Viessmann mixing valve
P
Room thermostat (optional)
See note 2.
Q
Vitodens 100 boiler
R
Expansion tank
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