Technical Manual

5601 189 - 01

Vitodens 100-W, WB1B Technical Data

Model WB1B 26 35

 t

Output Btu/h 83,000 108,000

30° F rise (GPM) 5.5 ---

35° F rise (GPM) 4.7 6.2

40° F rise (GPM) 4.2 5.4

Maximum Flow Rates

Vitodens 100-W, WB1B 10-26, 10-35 with CombiPLUS

and one heating circuit without LLH

Legend

AV Air vent

PRV Pressure relief valve (boiler)

PRV* Pressure relief valve (DHW 150 psi)

WSE Water softener equipment

A Vitodens 100-W gas-fired condensing boiler

B External system controller (field supplied)

C Heating circuit

D Heating circuit pump (field supplied)

E CombiPLUS

F Closely spaced tees, 4x pipe Ø or 12” (305 mm)*

G Expansion tank

* A low-loss header offers additional benefits not

provided by a pair of closely spaced tees.

Viessmann strongly recommends and prefers the

use of a low-loss header over closely spaced tees.

See page 18 for details.

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.

System Layout 6

Installation