System Layout 4 - Viessmann VITODENSd 100-W Technical Data Manual

Vitodens 100-W, WB1B Technical Data

System Layout 4

Vitodens 100-W, WB1B 26, 35 with one heating circuit
and the CombiPLUS
Legend
AV Air vent
PRV Pressure relief valve (boiler)
PRV*Pressure relief valve (DHW 150 psi)
WSE Water softner equipment
A
Vitodens 100-W
B
Room thermostat
C
Heating circuit
D
CombiPLUS
E
Expansion tank
Maximum Flow Rates
Model WB1B
∆ t
Output Btu/h
30° F rise (GPM)
35° F rise (GPM)
40° F rise (GPM)
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 accessory part.
Built-in pump residual head for the heating system
side is 7.5 ft. of water column at the boiler
maximum flow rate of 6.2 GPM.
Note: Heating circuit C in the examples should be designed
to 30º F to 40º F (16.7º C to 22.2º C). For lesser
delta T design, system layout designer must use
one of the examples (5 or 6) on the following pages.
Installation
26 35
83,000 108,000
5.5 ---
4.7 6.2
4.2 5.4
23