Water Quality; Oxygen Diffusion Barrier Underfloor Tubing; Burner Alternatives; Burner Manufacturer - Viessmann Vitorond 200 VD2 Series Technical Data Manual

Vitorond 200, VD2 Series 320 to 1080 Technical Data
System Design Considerations

Water quality

Treatment for boiler feed water should be considered
in areas of known problems, such as where a high mineral
content and hardness exist. In areas where freezing might
occur, an antifreeze may be added to the system water
to protect the system.
Please adhere to the specifications given by the antifreeze
manufacturer. Do not use automotive silicate-based
antifreeze. Please observe that an antifreeze/water
mixture may require a backflow preventer within the
automatic water feed and influence components such
as diaphragm expansion tanks, radiation, etc.
A 40% antifreeze content will provide freeze-up
protection to -10°F (-23°C). Do not use antifreeze other
than specifically made for hot water heating systems.
System also may contain components which might be
negatively affected by antifreeze. Check total system
frequently when filled with antifreeze.
Follow the instructions of antifreeze manufacturer.

Burner Alternatives

Burner manufacturer

Weishaupt or Riello

Burner/Gas train approval

Standard approvals are CSA (for Canada) and UL (for U.S.).
IRI and FM approved equipment is also available - please
inquire.

Electrical requirements

Weishaupt WG, WL, L, RL, G, GL and WM-G(L) RGL
Series burners listed on page 18 are available in 120 VAC
single-phase, 208 VAC three-phase, 460 VAC three-phase,
or 575 VAC three-phase, all in 60 Hz configuration.
Size 7 burners are not available in 120 VAC single-phase
configuration. It is generally acceptable to use voltages
within ten percent of the supply voltage. Available voltage
inside boiler room must be provided at time of order.
Ensure appropriate disconnect means and overcurrent
protection.

Natural gas pressure

Natural gas pressures and heating values as provided by
the gas utilities vary greatly across North America. Select
the appropriate gas train accordingly. Low pressure gas
trains have a maximum input of 14 "w.c.; high pressure
gas trains have a maximum pressure of 5 psig. Minimum
gas pressures apply - please inquire. Gas pressures and
heating values at site must be provided at time of order.
(continued)

Oxygen diffusion barrier underfloor tubing

The boiler warranty does not cover leaks resulting from
corrosion caused by the use of underfloor plastic tubing
without an oxygen diffusion barrier. Such systems
must have the tubing without oxygen diffusion barrier
separated from the boiler with a heat exchanger.
Viessmann recommends the use of underfloor plastic
tubing with an oxygen diffusion barrier.

Factory pre-wired components

Custom factory pre-wiring by Viessmann ensures optimal
functionality, compliance with regional requirements,
and ease of installation in the field. Pricing provided
by Viessmann includes all necessary hardware items
such as junction panel, burner power supply, boiler
door safety switch (where necessary), and all essential
pressure switches, as well as interconnection with conduit
between control and burner.
Electrical drawings provided upon product delivery.

Boiler/Burner start-up

Vitorond 200, VD2 boilers with Weishaupt burners require
start-up by Viessmann.
Please inquire to obtain details regarding the necessary
prerequisites of boiler/burner start-up procedures.
IMPORTANT
To minimize delivery lead times, please ensure that
critical technical information is provided at time of order.
Viessmann will not process an order without site-specific
information regarding available voltage and gas pressure.
In addition Viessmann recommends that gas pressure
information be provided in writing by the local gas utility.
Standard Equipment
17