Fuel; Boiler Control; Condensate Disposal; Boiler Location - Viessmann VITOCROSSAL 300 Operating Instructions Manual

System Information
Description
(continued)

Fuel

Natural gas (NG) or liquid propane gas (LPG).

Boiler control

The Vitocrossal 300, CA3 boiler series is operated with
a Vitotronic control and microcomputer indoor/outdoor
control system for boiler operation without low temperature
limit. The control system must be programmed for this type
of operation by the installing heating contractor.
Refer to the boiler Installation and Service
Instructions.

Condensate disposal

During the operation of the Vitocrossal 300 CA3 boiler,
the amount of condensate as per the diagram can be
expected.
The values given are approximate amounts occurring under
practical conditions. Not included in the chart is the amount
of condensate occurring in the vent pipe and chimney
system. The condensate from the chimney system can be
collected together with the condensate from the heating
boiler and be disposed of into a floor drain.
The condensate occurring will have a pH value between
3 and 4. If local building requirements demand neutralizing
the condensate before disposal, contact Viessmann
Manufacturing Company Inc. for a correctly sized
neutralization tank. The treated condensate will show pH
values of between 6.5 and 9 and can then be disposed of
into the waste water system.
Boiler water return temperature
Vitocrossal 300, CA3 boiler efficiency is dependent
on system heating water return temperatures and load
conditions.
10
Vitocrossal 300 CA3 Series 2.5 to 6.0 Operating

Boiler location

The boiler must not be installed in rooms or areas where
halogenated hydrocarbons are present in the combustion
air, such as barber shops and beauty salons, printing
shops, chemical cleaners, laboratories etc.
CAUTION
The boiler room must be safe from frost and be
properly ventilated.

Venting connection

A large amount of water vapor is contained in the flue
gases of a condensing boiler. The condensate pH value is
between 3 and 5.5. The flue gas temperatures depending
on the boiler water temperature may be between 77°F
(25°C) and 257°F (125°C).
The manufacturer of the chimney system or venting
system has to properly design the venting system as well
as select proper materials.
If there are any questions in regards to the neutralization
of the condensate and/or to the venting of this boiler
series, contact your local Viessmann Sales Representative.

Optimum operation

To ensure optimum operation of your heating system do
the following:
Keep the boiler and the boiler room clean and free

of dust and dirt.
Ensure proper and adequate system pressure by

occasionally checking the pressure gage.
Have a qualified heating contractor service and

maintain your heating system on a regular basis.
See Service Schedule starting on page 42 for details.