System Layout 4 - Viessmann VITODENS 200-W B2HE 85 Installation Instructions Manual

Installation Examples

System Layout 4

Vitodens 200-W, B2HE with...
- DHW storage tank
- one direct-connected heating circuit
- one heating circuit with a mixing valve
Legend
Vitodens 200-W B2HE boiler with integrated
A
outdoor reset control and variable speed boiler pump
B Outdoor temperature sensor !
Vitotrol remote (optional)
C
D Under floor heating circuit
Radiator heating circuit
E
Heating circuit pump (mixing circuit)
F
G Mixing valve temperature sensor ?
Accessory kit for heating circuit with mixing valve
H
I Domestic hot water storage tank
J DHW tank temperature sensor %
Expansion tank
K
L Temperature and pressure relief valve
Pressure relief valve
M
DHW recirculation pump
N
* Based on system configuration set using the
commissioning assistant.
42
*
P2
Vitodens 200-W B2HE 85, 120, 150, 199 Installation
Installation of ...
ratiator heating circuit (high temperature circuit)
■
underfloor heating circuit with 3-way mixing valve
■
and system separation (low-temp. circuit)
DHW production
■
... with the following flow conditions:
The flow rate of the heating circuit is less than the
maximum possible water flow rate of the Vitodens
200-W B2HE boiler.
See pages 37 and 38 for maximum water flow rate of the
Vitodens 200-W B2HE boilers. The use of a low-loss header
is recommended if the system water flow rate is unknown.
The low-loss header is available as accessory part.
See following pages for installation examples with a
low-loss header.
IMPORTANT
System separation is required of underfloor heating
systems employing non-oxygen diffusion barrier tubing.
All components on the secondary side of the heat
exchanger must be made of corrosion-resistant materials.
IMPORTANT
See pages 37 and 38 for the residual head of the boiler.
An undersized pump may cause short-cycling and/or
improper operation of the boiler. Viessmann STRONGLY
recommends using a low-loss header and a boiler pump in
this system layout.