Hydraulic Connection; Installation Examples - Viessmann VITODENS 222-F Technical Data Manual

Vitodens 222-F, B2TA 19 and 35 Technical Data

Hydraulic Connection

Installation Examples

System design
Viessmann condensing boilers can generally be installed
in any pumped hot water heating system (closed system).
The circulation pump is an integral part of the appliance.
Minimum system pressure 14 psi.
The boiler water temperature is limited to 165º F (74º C).
To minimise distribution losses, we recommend that
you size the heat distribution system to a max. supply
temperature of 158º F (70º C).
For apartments with less than 860 ft
space or for low energy houses with low heat demand
we recommend, due to the immediate capturing of the
room-influencing factors, the utilisation of the Vitodens
with a constant temperature control unit in conjunction
with the Vitotrol 100.
To reduce burner cycling in low energy houses with a
correspondingly low heat demand, we recommend the
use of a low loss header.
Please note that in the following piping layout examples
all pumps external to the boiler are field supplied.
IMPORTANT
The examples on the following pages depict possible
piping layouts of the Vitodens 222-F boiler equipped
with Viessmann System Technology.
Please note that the following examples are simplified
conceptual drawings only!
Piping and necessary componentry must be field verified.
A low water cut-off (LWCO) must be installed where
required by local codes.
Proper installation and functionality in the field is the
responsibility of the heating contractor.
Installation
2 2)
(80 m living
23