Dunkirk DWB Series User Manual download pdf (Page 15)

6 - COMBUSTION AIR AND VENT PIPING - CATEGORY I (CHIMNEY VENT)

6.1 Check Your Chimney

Chimney must be clean, right size, properly constructed

and in GOOD CONDITION.

Installation must conform to requirements of the

authority having jurisdiction or, in absence of such

requirements, to the National Fuel Gas Code, ANSI

Z223.1/NFPA 54 and/or Natural Gas and Propane

Installation Code, CAN/CSA B149.1.

Increaser ﬁ tting is required on this boiler for Category I

venting, and 4” is minimum permissible vent diameter.

This does not imply vent connector is intended to be 4”

diameter pipe. Vent connector shall be sized according

to appropriate venting tables in the National Fuel

Gas Code and may be required to be larger than 4”

diameter.

NOTICE

Boiler installation for chimney venting is not

complete unless increaser ﬁ tting is located and

secured.

Venting into masonry chimney without liner, line

chimney from top to bottom with either:

A. Listed Type B vent pipe

B. Listed ﬂ exible vent liner

C. Poured ceramic liner.

Outside chimneys should not be used unless they are

(choose one of the following):

A. Enclosed in a chase

B. Lined with Type B vent pipe

C. Use listed ﬂ exible vent liner

D. Use certiﬁ ed chimney lining system

Vent connector from boiler to chimney should run as

directly as possible with as few elbows as possible.

Common venting shall not be allowed. Boiler and

other certiﬁ ed appliances. appliances can share same

chimney vent. Consult appropriate Vent Sizing Tables

in National Fuel Gas Code for speciﬁ c requirements of

multiple appliance venting.

Boiler is only appliance connected to vent, Type B vent

pipe is recommended for vent connector.

Slope pipe up from boiler to chimney not less than 1/4”

per foot (21mm/m).

End of vent pipe must be ﬂ ush with inside face of

chimney ﬂ ue. Use sealed-in thimble for chimney

connection.

10.

Fasten sections of vent pipe with sheet metal screws to

make piping rigid. Use stovepipe wires to support pipe

from above.

11.

Do not connect to ﬁ replace ﬂ ue.

12.

Do not install damper on this boiler.

Figure 10 - Combustion Air Fitting

3

Horizontal Venting requires ﬁ eld supplied appliance adapter

for the boiler ﬂ ue outlet.

Boiler is provided with a 3” vent connection, 3” x 4”

increaser must be ﬁ eld sourced for chimney application.

This does not mean that the connection to the chimney will

always be 4”.

WARNING

Boiler and venting installations shall be performed

by a qualiﬁ ed expert and in accordance with the

appropriate manual. Installing or venting boiler

or other gas appliance with improper methods or

materials may result in serious injury or death due

to ﬁ re or to asphyxiation from poisonous gases such

as carbon monoxide with is odorless and invisible.

WARNING

Do not connect boiler to any portion of mechanical

draft system operating under positive pressure.

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 47 48

Comments to this Manuals

No comments

Dunkirk DWB Series User Manual Page 15

Comments to this Manuals

Related products and manuals for Water boiler Dunkirk DWB Series