Twin Pipe System S - ECR International COMBI 115 Installation, Operation And Maintenance Manual

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W ARN I N G
Asphyxiat ion hazard! I m proper inst allat ion could
result in deat h or serious inj ury. Read Twin Pipe
I nst allat ion I nst ruct ions com plet ely and underst and all
requirem ent s before beginning inst allat ion.
5 .8 Tw in Pipe Syst em s
Twin pipe venting allows exhaust pipe and intake flue to be
separated from each other. Fresh air is drawn in at a different
area from flue terminal location.
Fig 5- 8: Horizont al t erm inat ion required for exhaust pipe,
fresh air inlet can use horizont al t erm inat ion or raw end of
st raight sect ion of pipe.
PVC can be used on intake only on t win pipe applicat ions.
A.
Twin Pipe CPVC System or PVC System
Appropriat ely rat ed CPVC and PVC are approved for boiler
exhaust and air int ake.
To t ransit ion from Coaxial at t he t op of t he boiler t o Twin Pipe
CPVC/ PVC a kit is available. See Figure 5- 14 .
B.
Twin Pipe Polypropylene System
Single wall polypropylene is used for bot h exhaust and
air int ake piping. PVC can be used on int ake on t win pipe
applicat ions.
Use t he appropriat e t ransit ion kit t o change from
prolypropylene t o PVC. To t ransit ion from Coaxial, at t he t op of
t he boiler t o Twin Pipe polypropylene vent ing an adapt er kit is
available. See Figure 5- 13.
C.
Twin Pipe Separated Flue
Exhaust and com bust ion air int ake are not locat ed in sam e
general locat ion. See Figures 5- 8, 5- 9, 5- 10, 5- 21, 5- 22.
D.
Twin Pipe - Common Atmospheric Zone
Termination
Exhaust and com bust ion air int ake are locat ed in sam e general
locat ion and are of equal lengt h.
t hrough 5- 32.
Tw in Pipe M a x im um Ve nt Le ngt hs
(Includes first elbow and termination)
Boiler
7 5 / 1 0 0 / 1 1 5 / 1 2 5 / 1 5 0
3 "
Vent Size
[ 8 0 m m ]
I ntake
49 ft
L1
[ 15m ]
Vent
Exhaust
147 ft
L2
[ 45m ]
Vent
Com bined
196 ft
L1+ L2
[ 60m ]
Vent
Single W all Elbow s - Equivalent Lengt h
3 " ( 8 0 m m )
45° bend 0.82 ft [ 0.25 m ]
90° bend 1.64 ft [ 0.50 m ]
NOTE: Two pipe can be installed horizontally or vertically.
5 - COM BU STI ON AI R AN D V EN T PI PI N G
See Figures 5- 23
1 6 5 / 2 0 5
2 " 3 " 2 "
[ 6 0 m m ] [ 8 0 m m ] [ 6 0 m m ]
Maxim um
100 ft 85 ft
85 ft [ 25.9m ]
[ 30.5m ] [ 25.9m ]
170 ft 200 ft 170 ft
[ 51.8m ] [ 60.9m ] [ 51.8m ]
2 " ( 6 0 m m )
3 ft [ 0.91 m ]
5 ft [ 1.5 m ]
FI GURE 5 - 8 - 2 " / 6 0 m m & 3 " / 8 0 m m Tw in Pipe
Sepa ra t ed H orizont a l Flue Term ina t ion
FI GURE 5 - 9 - 2 " / 6 0 m m & 3 " / 8 0 m m Tw in Pipe
Sepa ra t ed H orizont a l Flue Term ina t ion
FI GURE 5 - 1 0 - 2 " / 6 0 m m & 3 " / 8 0 m m Tw in Pipe
Sepa ra t ed H orizont a l Flue Term ina t ion W it h Tee On
Ex ha ust - CAN BE U SED ON ALL SI Z ES
All
All
Minim um
6 ft
[ 1.8 m ]
12 ft.
[ 3.6 m ]
Grade, Snow
& Ice
2 3
Maint ain 12" ( 305 m m ) US, 18" ( 457
m m ) Canada clearance above highest
ant icipat ed snow level, 24" ( 610 m m )
above roof.
Avoid locat ions where snow m ay drift
and block vent and com bust ion air.
I ce or snow m ay cause boiler t o shut
down if vent or com bust ion air becom es
obst ruct ed.
240013687 REV A [ 09/ 01/ 2022]
This Termination
can be used on:
2" / 60 mm ON
165/ 205
3" / 80 mm
ON ALL SIZES
vent only
This Termination
can be used on:
2" / 60 mm ON
165/ 205
3" / 80 mm
ON ALL SIZES
vent only
This Termination
can be used on:
2" / 60 mm
ON ALL SIZES
3" / 80 mm
ON ALL SIZES
vent only