Unit installation

Vitocrossal 300, CT3 Series Installation
5285 873 - 02
8
General Information
WARNING
Exposing the boiler to pressures and temperatures
in excess of those listed will result in damages,
and will render warranty null and void.
Product Information
About these Instructions
Take note of all symbols and notations intended to draw attention to potential hazards or important product
information. These include “WARNING”, “CAUTION”, and “IMPORTANT”. See below.

IMPORTANT
Warnings draw your attention to the presence of
potential hazards or important product information.

Cautions draw your attention to the presence of
potential hazards or important product information.

Helpful hints for installation, operation or maintenance
which pertain to the product.

This symbol indicates that additional, pertinent
information is to be found.

This symbol indicates that other instructions must
be referenced.
WARNING
Indicates an imminently hazardous situation which,
if not avoided, could result in loss of life, serious
injury or substantial product/property damage.
CAUTION
Indicates an imminently hazardous situation which,
if not avoided, may result in minor injury or product/
property damage.
High efficiency gas-fired hot water condensing boiler.
For operation with modulating boiler water temperatures
in closed loop, forced circulation hot water heating
systems.
The Vitocrossal 300, CT3 boilers are CSA certified with
Weishaupt and Riello burners which must be used in
conjunction with this boiler series.
The proper burner size must be verified and the burner
must be adjusted so that the maximum input of the
appropriate boiler size is always observed and adjusted.
The gas burner must always be installed according to the
instructions provided by the burner manufacturer.
The boiler model selected should be based on an accurate
heat loss calculation of the building. The boiler selected
must be compatible with the connected radiation.
The Vitocrossal 300 boiler is suitable for a maximum
operating pressure of 30 psig and a maximum boiler water
temperature of 210° F (99° C).
This boiler does not require a flow switch.