Technical data

Vitorond 200, VD2A Technical Data
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System Design
System Design Considerations (continued)
Barometric draft regulator
Barometric draft regulator type
For natural gas or propane applications, use a double-
acting type.
For #2 fuel oil applications, use a single-acting type.
Barometric draft regulator diameter
The barometric draft regulator must be the same diameter
opening as the chimney for which the vent is sized.
For example, a 14 in. chimney would require a 14 in.
barometric draft regulator. Do not size the barometric
draft regulator to the breeching outlet of the boiler, unless
the chimney is also intended to be of that diameter.
Venting (option #2)
The Vitorond 200 boiler is a Category III positive pressure
non-condensing boiler.
Each boiler must be vented individually.
The vent system must be properly designed and suitable
materials must be selected. The chimney must be gas
tight.
Use an AL29-4C® special stainless steel venting system
(UL/ULC listed for Category III) for single-wall vertical
venting of the Vitorond 200 boiler.
For more details on the positive pressure venting option,
see the Viessmann installation instructions for the positive
pressure venting system.
The following manufacturers may be contacted for
suitable stainless steel chimneys:
ProTech Systems Inc.
26 Gansevoort Street
Albany, NY 12202
Tel.: [phone]
Fax: [phone]
Toll free: 1-800-766-3473
Selkirk Canada Corporation
375 Green Road
Stoney Creek, ON L8E 4A5
Tel.: [phone]
Fax: [phone]
(US) 1-800-992-8368
(Canada) 1-888-735-5475
Email: [e-mail]
Web: www.selkirkchimney.com
Security Chimneys International Ltd.
2125 Rue Monterey, Laval, Quebec H7L 3T6
Tel. [phone]
(US) 1-800-361-4909
(Canada) 1-800-667-3387
Fax: [phone]
Email: [e-mail]
Web: www.securitychimneys.com
IMPORTANT
The flue size outlet on the boiler does not automatically
determine the horizontal breeching, or the actual chimney
diameter.
The chimney size must be designed for the actual boiler
model and its respective input.