Giant Factories ANSI Z21.10.3 Owner's Manual page 26

TWIN PIPE VENTING GUIDE
Multiple Water Heater Installation – Through the Roof
Locate the vent and intake air termination using the following
guidelines:
1) For installations with multiple Tankless Water Heaters, refer
to Figure 29 for proper exhaust and combustion air piping
12" (30,5 cm) min
placement.
2) Roof penetration of the vent and intake air piping should be
such that the combustion air intake is a minimum twelve (12)
inches (30.5 cm) from the adjacent vent pipe of the other wa-
12" (30,5 cm)
min au-dessus
ter heater. For installations in the U.S. refer to Figure 29. For
de l'entrée d'air
installations in Canada, refer to clearances required by CAN/
CSA B149.1.
Figure 27: Vertical Termination of U-Vent and
Combustion Air Pipe
12"
(30,5 cm)
min
12'' (30.5 cm)
min
above air
intake
opening
Figure 28: Ubbink® Concentric to Twin Pipe Adaptor
Table 17
Part #
187585PP
Ubbink bv
Verhuellweg 9
NL- 6984 AA Doesburg
T + 31 (0) 313 480
200
F + 31 (0) 313 473
942 rolux@ubbink.nl www.ubbink.nl
Terminaison d'évent
Terminaison de l'entrée
d'air de combustion
12" (30,5 cm)
au-dessus du
plus haut
niveau de
neige prévu
Vent Termination
Combustion air termination
12'' (30.5 cm)
above
anticipated
snow level
or grade
12'' (30.5 cm)
min
Exhaust
Vent
Physical Data in inches (cm)
Nominal
Diameter
3"/5" (7.6/12.5)
4004535
Figure 29: Vertical Termination of Multiple Water Heaters
12'' (30.5 cm) min
12'' (30.5 cm)
min
above
air
intake
12''
(30.5 cm)
min
N O T I C E
To prevent possibility of condensate freeze-up, do not install
vent kits one above the other. Once the vent terminal location
has been determined, make holes through the exterior wall to
accommodate the vent pipes. Vent pipes must exit exterior wall
horizontally only.
Lubricant can be applied on the seals, only use
the Ubbink approved lubricant that is supplied
in this package
Combustion Air
Overall Height Effective Height
9.9" (25.1) 8.6" (21.8)
CAUTION
ULc 636 Gas Vent-BH Class IIC-110°C/230°F
where applicable
WARNING
Improper installation of vent system and components, or
DANGER
failure to follow all installation instructions, can result in property
damage or serious injury.
AVERTISSEMENT
26
Vent Termination
Combustion air termination
12'' (30.5 cm)
above
anticipated
snow level
or grade
Offset
4.8" (12.2)