Flue Size; Dimensional Information Required For The Connection; Venting Layout; Termination Location - DeDietrich GT 123 A Installation And Maintenance Manual

1 Flue size

For size and height of the chimney, please refer to State and local
laws or regulations in force.

2 Dimensional information required for the connection

The unit shall be installed in keeping with the code of practice, with a
sealed pipe.
The section of the pipe used to connect the flue gas nozzle of the
boiler to the flue shall be at least equal to that of the nozzle. The pipe
shall be as direct and short as possible.
Boiler type
Dimension F
GT 123 A / 1203 A
GT 124 A / 1204 A
GT 125 A / 1205 A
GT 126 A / 1206 A
A: flue nozzle
The Common vent shall be sized in
accordance to ANSI Z223.1 or CSA
B149.1 or 2

3 Venting layout

Failure to install venting according to the manufactures
installation instructions may result in personal or property
damage.
1. All venting must be installed according to all applicable local
codes, standards or authorities having jurisdication regarding the
venting being used and any other installation requirements.
2. Always follow the venting installation instructions as supplied with
the venting for proper installation and assembly of the venting.
3. Always ensure air-tight seal of all positive pressure venting that
is being installed
4. Always follow the sidewall or direct vent termination location
warnings and minimum distances, consult local codes for
additional requirements.
5. All venting must be secured and supported properly, as
suggested by the venting manufacturer or by local codes.
6. Check local codes regarding acceptable usage of a condensate
'P' trap or condensate neutralizations system. The 'P' trap must
be filled to prevent leakage of flue gases.
09/02/08 - 94863361 - 85784009D
Venting the Boiler
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2
2
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See following pages for vent types and typical applications.
The appliance must be connected to a vent that has sufficient
draft at all times to ensure safe and proper operation of boiler.
Flue connection sizes :
GT 123 A to GT 125 A : Ø 5"
GT 126 A : Ø 6" with flue adapter,
direct vent applications
7. All direct vent using AL294C rigid positive pressure venting.
a) Minimum calculated equivalent vent length = 5 foot.
b) Maximum calculated equivalent vent length = 30 foot.
c) Do not include vent termination with the calculated vent length
d) Each 90° elbow = 10 foot of equivalent vent length
e) Each 45° elbow = 5 foot of equivalent vent length
f) Venting length shall be as short as possible
g) If a vent termination riser is applied, the riser height shall be
included with the calculated vent length.
8. All direct vent using CeraFlex flexible venting.
a) Minimum calculated equivalent vent length = 5 foot.
b) Maximum calculated equivalent vent length = 20 foot.
c) Do not include vent termination with the calculated vent length
d) Avoid excessive bends or turns with the venting
f) Venting length shall be as short as possible
g) If a vent termination riser is applied, the riser height shall be
included with the calculated vent length.
GT 120 A - GT 1200 A
please remove adapter in
.
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