Vitodens 333-F, Type Fr3B 4.1 Product Description - Viessmann VITODENS 242-F Technical Manual

Vitodens 333-F, type FR3B
4.1 Product description
The Vitodens 333-F storage combi boiler combines the benefits of the
Vitodens 300-W with the high DHW convenience of a separate DHW
cylinder.
With the MatriX gas burner and the stainless steel Inox-Radial heat
exchanger, the Vitodens 333-F offers top technology for many years
of energy efficiency and high heating and DHW convenience. The
Lambda Pro Control and SMART modules, well-known from the
Vitodens 300-W, plus the variable speed high efficiency DC pump,
ensure permanently high efficiency, reliable operation and low power
consumption.
The Vitodens 333-F, type FR3B, with its integral 130 litre cylinder with
internal indirect coil, is particularly suitable for hard water areas.
The internal indirect coil with its smooth surface is not prone to attract-
ing limescale deposits.
Recommended applications
■ Installations in detached and terraced houses
■ New build (e.g. pre-fabricated houses and housing association
projects): installation in utility rooms and attics
■ Modernisation: replacement of system boilers, floorstanding atmos-
pheric gas boilers and oil/gas boilers with DHW cylinders below
■ Use in areas with a water hardness of >20° dH (3.58 mol/m
VITODENS
A Stainless steel Inox-Radial heat exchanger for high operational
reliability, a long service life and high output in the smallest
space
B Modulating MatriX gas burner for extremely clean combustion
C Integral diaphragm expansion vessel
D Digital boiler control unit
E Integral, variable speed high efficiency DC pump
F DHW cylinder with internal indirect coil
Benefits at a glance
■ Gas condensing storage combi boiler with integral DHW cylinder
with internal indirect coil, 3.8 to 26.0 kW
■ Standard seasonal efficiency [to DIN]: up to 98 % (H
■ Durable and efficient through the Inox-Radial heat exchanger
■ MatriX gas burner with long service life thanks to stainless steel
MatriX mesh – resistant to high temperature loads
■ Enamelled DHW cylinder with internal indirect coil and 130 l capacity
(N value up to 1.8)
L
■ Energy saving high efficiency DC pump (in accordance with Energy
Label A)
■ New Vitotronic control unit that is easy to operate with plain text and
graphic display
■ The programming unit part of the control unit can also be fitted on a
wall mounting base (accessory)
■ Lambda Pro Control combustion controller for all gas types – saving
fees by extending the inspection intervals to up to five years [in Ger-
many]
■ Universal connection sets for individual installation flush with the wall
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