Takagi T-H3-DV User Manual

15 Page
-Exhaust vent (ABS, PVC, CPVC, or polypropylene vent)-
TheIndoormodelscanbeventedwithABS,PVC,CPVC,orpolypropylene(temperaturerateduptoat
least149°F).VentmaterialcertifiedtoULCS636standardsisrecommendedintheUSA.InCanada,
plastic venting must be certified to ULC S636 standards.
• Themaximumlengthofexhaustventpipingmustnotexceed70ft.(21.3m)for3”venting,which
dependsontheelevationwherethewaterheaterisinstalled,and100ft.(30.5m)for4”venting
(deducting 5 ft. (1.5 m) for each elbow used in the venting system). Do not use more than 5
elbows. See the table below.
• When the horizontal vent run exceeds 5 ft. (1.5 m), support the vent run at 3 ft. (0.9 m) intervals
with overhead hangers.
Installaon
Installaon Manual
Item Material United States Canada
Exhaust pipe and
Fittings
Schedule40PVC ANSI/ASTM D1785
ULC S636 Certified
Materials Only
PVC-DWV ANSI/ASTM D2665
Schedule40CPVC ANSI/ASTM F441
Schedule40ABS-DWV ANSI/ASTM D2661
Polypropylene UL-1738
Pipe Cement/Primer
PVC ANSI/ASTM D2564
CPVC ANSI/ASTM F493
ABS ANSI/ASTM D2235
NOTE: Do NOT Use Cellular Foam Core Pipe
Diameter Max. No. of Elbows Max. Vertical and Horizontal (Total) Vent Length
3 in. (76 mm) 5 70 ft. (21.3 m)
4 in. (102 mm) 5 100 ft. (30.5 m)
*For each elbow added, deduct 5 ft. (1.5 m) from max. vent length.
No. of Elbows
Max. Vertical or Horizontal (Total) Vent Length
3" venting 4" venting
Up to 3,000 ft Up to 6,000 ft Up to 10,100 ft Up to 10,100 ft
0 70 ft. (21.3 m) 40 ft. (12.2 m) 25 ft. (7.6 m) 100 ft. (30.5 m)
1 65 ft. (19.8 m) 35 ft. (10.7 m) 20 ft. (6.1 m) 95 ft. (29.0 m)
2 60 ft. (18.3 m) 30 ft. (19.1 m) 15 ft. (4.6 m) 90 ft. (27.4 m)
5 45 ft. (13.7 m) N/A N/A 75 ft. (22.9 m)
Excludes vent terminators, termination elbows, or rain caps.
For details on the vent connection, refer to p. 16 and p. 17.

Takagi T-H3-DV Specifications

General

Brand	Takagi
Model	T-H3-DV
Category	Water Heater
Language	English