Viessmann VITODENS 100-W Installation And Service Instructions Manual page 28

Boiler Connections
Installation Examples
System Layout 1
Vitodens 100-W, WB1B 10-26, 10-35 with...
– one heating circuit
T- - T
AV
PRV
Fig. 24
System Layout 1 - Alternate Option
T- - T
AV
PRV
Fig. 25
Please note!
The use of a low-loss header is
recommended if the water flow rate is
less than 1.7 GPM / 400 ltr/h or more
than 6.2 GPM / 1400 ltr/h.
The low-loss header is available as an
accessory part.
28
(continued)
*
Maximum Flow Rates
Model WB1B
∆ ∆ ∆ ∆ t
Output Btu/h
30ºF rise (GPM)
35ºF rise (GPM)
40ºF rise (GPM)
Legend
AV Air vent
PRV Pressure relief valve
Please note:
Heating circuit C in the examples
*
should be designed to 30ºF to 40ºF /
16.7ºC to 22.2ºC. For a lesser delta T
design, the system layout designer
must use one of the examples (3 or 4)
on the following pages.
IMPORTANT
Ensure that a pressure activated
by-pass is installed.
10-26 10-35
83,000 108,000
5.5 ----
4.7 6.2
4.2 5.4
Vitodens 100-W
Room thermostat
Heating circuit
Heating circuit pump (field
supplied)
Expansion tank