John Wood Takagi - 240H-340H-540H - Manual (Page 16)

16
Page
<How to install plastic venting>
76 mm (3") vent connection Diagram
From 76 mm (3") to 102 mm (4") vent connection Diagram
-Exhaust vent (Stainless steel vent)-
This is a Category IV appliance and must be vented accordingly. The vent system must be sealed airtight.
All seams and joints without gaskets must be sealed with high heat resistant silicone sealant or UL listed
aluminum adhesive tape having a minimum temperature rating of 71 °C (160 °F). For best results, a vent
system should be as short and straight as possible.
• These models are a Category IV appliance and must be vented accordingly with any 4” vent
approved for use with Category III/IV or Special BH type gas vent.
• The manufacturer recommends the “T-Vent” line manufactured by TAKAGI. (Refer to Takagi’s
“T-Vent” brochure for details.) However, the following are also UL listed manufacturers: ProTech
Systems Inc. (FasNSeal), Flex-L Inc., Z-Flex Inc. (Z-Vent III), Metal-Fab Inc., and Heat-Fab Inc. (Saf-T
Vent).
• Follow the vent pipe manufacturer’s instructions when installing the vent pipe.
• Do not common vent this appliance with any other vented appliance. (Do not terminate vent
into a chimney. If the vent must go through the chimney, the vent must run all the way through
the chimney with Category III / IV approved or Special BH vent pipe.)
• The maximum length of exhaust vent piping must not exceed 30.5 m (100 ft.) (deducting 1.5 m
(5 ft.) for each elbow used in the venting system). Do not use more than 5 elbows.
• When the horizontal vent run exceeds 1.5 m (5 ft.), support the vent run at 0.9 m (3 ft.) intervals
with overhead hangers.
Installation
Installation Manual
76 mm (3”)
plastic socket
Exhaust vent collar
(Female)
76 mm (3”)
plastic straight pipe
76 mm (3”)
plastic socket
Intake vent collar
(Female)
76 mm (3”)
plastic straight pipe
1. Connect a 76 mm (3") plastic socket
directly on the exhaust and intake vent
collar of the water heater.
2. Connect a 76 mm (3”) plastic straight
pipe to the plastic socket.
1. Connect a 76 mm (3") x 102 mm
(4") plastic reducer directly on the
exhaust and intake vent collar of
the water heater.
2. Connect a 102 mm (4”) plastic
straight pipe to the reducer.
102 mm (4”)
plastic straight pipe
76mm (3") x 102 mm (4")
plastic reducer
Exhaust vent collar
(Female)
Intake vent collar
(Female)
102 mm (4”)
plastic straight pipe
76mm (3") x 102 mm (4")
plastic reducer