Viessmann Vitodens 100-W Technical Data Manual page 15

System Layout 1
Vitodens 100-W, WB1B 10-26, 10-35 with one heating circuit
T- - T
AV
PRV
F
Fig. 12
System Layout 1 - Alternate Option
T- - T
AV
PRV
Fig. 13
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
accessory part.
F
*
Maximum Flow Rates
Model WB1B 10-26
∆ ∆ ∆ ∆
t
83,000 108,000
Output
Btu/h
30 ºF rise (GPM) 5.5
35 ºF rise (GPM) 4.7
40 ºF rise (GPM) 4.2
Installation Examples
Legend
AV Air vent
PRV Pressure relief valve
Vitodens 100-W
Room thermostat
Heating circuit
Heating circuit pump (field
supplied)
Expansion tank
Pressure Activated By-Pass
*
Please note:
Heating circuit C in the examples should
be designed to 30ºF to 40ºF / 16.7ºC to
22.2ºC. For lesser delta T design, 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 if there are system
component(s) in C that may isolate
the flow to the pump D.
10-35
----
6.2
5.4
15