DeDietrich GT 123 A Installation And Maintenance Manual page 25

4.3 Boiler Venting – Oil Fired Direct Vent Systems [Sealed Combustion] Typical Layouts and Requirements.
Caution & Warning:
Improperly sealed venting system could result in carbon monoxide [CO] poisoning; ensure adequate support
and fastening of system. Ensure venting can safely exhaust all flue gases outside in an effective manner. These systems
must operate under a positive vent pressure condition that is stable. Do not puncture or drill holes in any portion of the
venting, venting to be sealed according to the vent manufacturers recommended method.
Oil Direct Vent Systems:
Must be vented using the systems shown in the table, see venting
layout drawing for component identification.
System Requirements:
1. Complete venting system by Flex-L-International
2. Vent Safety Switch [Pressure switch], set switch according
to sidewall vent switch settings on proceeding page.
Item
Flex-L Part #
CFT4
Select
one A CFRBS4
only
CFRBS4L
CFK054-DD
CFK104-DD
Select
one B
only
CFK154-DD
CFK204-DD
Flex-L [CeraFlex] Flexible Venting
•
Length must be as short as possible [Min 5 feet & max 20 feet]
•
Horizontal runs to be sloped upwards.
•
No excessive bends or 90° Elbows in venting, all bends shall be no greater than 120°
•
Termination hood to be tilt downward 2-5° away from boiler
•
4" ID exhaust double wall insulated flexible venting & 4" single wall intake air flexible venting
•
Venting pressure shall not exceed 0.20" w.c. [0.50 mbar]
•
Use termination riser in installations where the min distance from the vent termination and grade cannot be achieved,
the rise must be included with the overall vent length.
•
Vent terminals through combustible wall require a wall thimble
•
Cera-Flex venting to have 1" clearance to combustibles
•
Vent Termination zero clearance to combustibles
•
DO NOT ENCLOSE ANY PORTION OF THE VENTING
•
All venting must be securely supported using non combustible supports.
•
Consult manual regarding application and wiring of the vent safety device [Δp] air pressure switch and settings.
•
Do not co-vent with any other appliance, these vent systems shown were design for single appliance venting.
09/02/08 - 94863361 - 85784009D
Venting
Description
CeraFlex Vent Termination 4"
CeraFlex Vent Termination Riser 4"
[Std] 34" Rise
CeraFlex Vent Termination Riser 4"
[Low] 18" Rise
5 ft. Complete CeraFlex Venting Kit
De Dietrich GT 120A Series Boilers
10 ft. Complete CeraFlex Venting Kit
De Dietrich GT 120A Series Boilers
15 ft. Complete CeraFlex Venting Kit
De Dietrich GT 120A Series Boilers
20 ft. Complete CeraFlex Venting Kit
De Dietrich GT 120A Series Boilers
Individual CeraFlex Vent Kit Components
Drawing Flex-L Part
ID
CFV054-6
CFV104-6
C
CFV154-6
Qty
[Req]
CFV204-6
1
CFAA54P-
D
1
E CFAT44
1
F CFBA34-RL
1
G CFGC4
1
L05-04
1
L10-04
1
H
L15-04
L20-04
GT 120 A - GT 1200 A
Description
#
CeraFlex-Insulated Vent 5
foot x 4 inch
CeraFlex-Insulated Vent 10
foot x 4 inch
CeraFlex-Insulated Vent 15
foot x 4 inch
CeraFlex-Insulated Vent 20
foot x 4 inch
OEM Appliance Adapter 5
DD inch - 4 inch w/ port
CeraFlex termination
adapter 4 inch - 4 inch
Riello BF Burner air intake
adapter 3 inch - 4" inch
Air Intake Flex Clamp 4 inch
Air Intake Flex Venting 5 foot
x 4 inch
Air Intake Flex Venting 10
foot x 4 inch
Air Intake Flex Venting 15
foot x 4 inch
Air Intake Flex Venting 20
foot x 4 inch
Qty
1
1
1
1
1
1
1
2
1
1
1
1
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