Takagi T-H3J-DV Installation Manual And Owner's Manual page 14

<Two-pipe, direct-vent installation>
Refer to p. 16 for details.
Set DIPswitches shown in the tables below depending on the vent length.
Vent length
5 to 20 ft
(DEFAULT)
21 to 40 ft
41 to 70 ft
Vent length
5 to 50 ft
(DEFAULT)
51 to 100 ft
<Single pipe with room-air intake installation>
Refer to p. 17 for details.
Set DIPswitches shown in the table below depending on the vent length.
Vent length
5 to 45 ft
(DEFAULT)
46 to 70 ft
-DIPswitch settings for Vent length-
3" venting
240 Indoor (T-H3J-DV)
340 Indoor (T-H3S-DV)
ON 1 2 3 4 5 6 7 8 9 10
OFF
No. 6 : ON
No. 7 : OFF
ON 1 2 3 4 5 6 7 8 9 10
OFF
No. 6 : OFF
No. 7 : OFF
ON 1 2 3 4 5 6 7 8 9 10
OFF
No. 6 : ON
No. 7 : ON
4" venting
240 Indoor (T-H3J-DV)
340 Indoor (T-H3S-DV)
ON 1 2 3 4 5 6 7 8 9 10
OFF
No. 6 : ON
No. 7 : OFF
ON 1 2 3 4 5 6 7 8 9 10
OFF
No. 6 : OFF
No. 7 : OFF
3" venting
240 Indoor (T-H3J-DV)
340 Indoor (T-H3S-DV)
ON 1 2 3 4 5 6 7 8 9 10
OFF
No. 6 : ON
No. 7 : OFF
ON 1 2 3 4 5 6 7 8 9 10
OFF
No. 6 : OFF
No. 7 : OFF
14
540 Indoor (T-H3-DV)
(Upper bank of DIPswitches)
ON 1 2 3 4 5 6 7 8
OFF
No. 3 : ON
No. 4 : OFF
ON 1 2 3 4 5 6 7 8
OFF
No. 3 : OFF
No. 4 : OFF
ON 1 2 3 4 5 6 7 8
OFF
No. 3 : ON
No. 4 : ON
540 Indoor (T-H3-DV)
(Upper bank of DIPswitches)
ON 1 2 3 4 5 6 7 8
OFF
No. 3 : ON
No. 4 : OFF
ON 1 2 3 4 5 6 7 8
OFF
No. 3 : OFF
No. 4 : OFF
540 Indoor (T-H3-DV)
(Upper bank of DIPswitches)
ON 1 2 3 4 5 6 7 8
OFF
No. 3 : ON
No. 4 : OFF
ON 1 2 3 4 5 6 7 8
OFF
No. 3 : OFF
No. 4 : OFF
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