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240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Ver. 1.00
CONFIDENTIAL
12-6. DIPswitch settings
The 240 (T-H3J) /340 (T-H3S) Indoor shares the computer
board with the 240 (T-H3J) /340 (T-H3S) Outdoor. The
DIPswitches have certain special functions as shown
on the following table and generally should not need
adjustment. Carefully verify the functions of each
DIPswitch before changing any settings.
No.
Functions
ON position
OFF position
1
Gas type
Propane
Disable
2
Natural gas
Disable
3
4
5
FM+, FM- and Input-
(FM speed is increased automatically. See section 12-13)
6
7
Installation settings
8
N/A
N/A
N/A
(
Default)
9
Output temperature settings
(Default 120 °F)
140 °F (60
°C)
120 °F (49
°C)
(
Default)
10
Deactivation of the exhaust temperature control
(This switch is for a specialized purposes only)
Enable
Disable
(Default)
DEFAULT
No.3: OFF
NO.4: OFF
No.5: OFF
OFF
ON 1 2 3 4 5 6 7 8 9 10
240 (T-H3J) / 340 (T-H3S) models
Bank of DIPswitches
240 (T-H3J) and 340 (T-H3S) models
Computer board
Vent settings
(Direct vent Indoor models only)
3" ventings
5 to 20 ft (DEFAULT)
21 to 40 ft
41 to 70 ft
4" ventings
5 to 50 ft (DEFAULT)
51 to 100 ft
N/A
No. 6 : ON
No. 7 : OFF
No. 6 : OFF
No. 7 : OFF
No. 6 : ON
No. 7 : ON
Set DIPswitches shown in the table below depending on the vent length.
OFF
ON 1 2 3 4 5 6 7 8 9 10
OFF
ON 1 2 3 4 5 6 7 8 9 10
OFF
ON 1 2 3 4 5 6 7 8 9 10
Outdoor models
No. 6 : OFF
No. 7 : ON
OFF
ON 1 2 3 4 5 6 7 8 9 10
Set DIPswitches shown
in the table below.
