Product Description - Viessmann VITODENS 242-F Technical Manual

Vitodens 333-F, type B3TA

4.1 Product description

The Vitodens 333-F storage combi boiler combines the benefits of the
Vitodens 300-W with the high level of DHW convenience of a separate
DHW cylinder.
Fitted with a MatriX gas burner and stainless steel Inox-Radial heat
exchanger, the Vitodens 333-F offers top technology for many years
of energy efficiency and a high level of heating and DHW convenience.
The Lambda Pro Control combustion controller and the variable speed
high efficiency circulation pump ensure permanently high efficiency,
reliable operation and low power consumption.
The Vitodens 333-F is equipped with integral sensor technology that
enables operation without additional measures to ensure a minimum
flow rate. Thanks to the integral flow rate sensor hydraulic balancing
requires minimum effort (eligible for KfW subsidies [in Germany]).
The integral stainless steel 100 l loading cylinder offers the same DHW
convenience as a separate DHW cylinder approximately twice the
size.
Recommended applications
■ Installation 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 gas system boilers, floorstanding
atmospheric gas boilers and oil/gas boilers with DHW cylinders
below.
VITODENS
A Stainless steel Inox-Radial heat exchangers for high operational
reliability, a long service life and high heating output on a very
small footprint
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 circulation pump
F Stainless steel DHW loading cylinder
Benefits at a glance
■ Standard seasonal efficiency [to DIN]: up to 98 % (H
109 % (H ) [net cv]
i
■ Low cycle frequency, even with low heat demand, due to optimised
pauses and a wider modulation range of up to 1:10
■ Durable and efficient thanks to the Inox-Radial heat exchanger
■ MatriX gas burner with long service life thanks to stainless steel
MatriX gauze – resistant to high temperature loads
■ Energy-saving high efficiency circulation pump (compliant with
Energy Label A)
■ Easy to operate Vitotronic control unit with plain text and graphic
display, as well as integral wireless and communication interface;
can be operated alternatively via a smartphone app
■ Lambda Pro Control combustion controller for all gas types – saves
on costs, with inspection interval extended to 3 years
■ Prepared for automatic hydraulic balancing
■ Universal connection sets for individualised installation flush against
the wall
■ Assembly kit (accessories) with the dimensions and design of the
appliance, for the connection of one regulated and one unregulated
heating circuit
Delivered condition
Gas condensing boiler with Inox-Radial heat exchanger, modulating
MatriX gas burner for natural gas and LPG to DVGW Code of Practice
G260 [Germany], expansion vessel, variable speed high efficiency cir-
culation pump and integral stainless steel DHW loading cylinder. Fully
plumbed and wired.
4
) [gross cv] /
s
VIESMANN
27