38
5600 332 v1.3
Vitodens 100-W, WB1B Installation & Service
Installation Examples
(continued)
Connections
System Layout 1
Vitodens 100-W, WB1B 26, 35 with...
- one heating circuit
System Layout 1 - Alternate Option
Note:
The use of a low-loss header is recommended if the
water flow rate is less than 1.7 GPM (400 L/h) or
more than 6.2 GPM (1400 L/h).
The low-loss header is available as an accessory part
.
Maximum Flow Rates
Legend
AV Air vent
PRV Pressure relief valve
A
Vitodens 100-W
B
Room thermostat
C
Heating circuit
D
Heating circuit pump (field supplied)
E
Expansion tank
F
Pressure Activated By-Pass
Note:
Heating circuit C in the examples should be designed
to 30º F to 40º F (16.7º C to 22.2º C). For a lesser
∆
t design, the system layout designer must use
one of the examples (3 or 4) on the following pages.
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
.
Model WB1B
26
35
∆
t
Output Btu/h
83,000
108,000
30º F rise (GPM)
5.5
----
35º F rise (GPM)
4.7
6.2
40º F rise (GPM)
4.2
5.4
PVR
AV
PVR
AV
IMPORTANT