A.O. Smith T-H2-DV Service Manual page 67

The function of the left bank of dipswitches
No. Functions
1 Gas type
2
3 N/A
4 Allow adjustments of fan motor speed
(Changing the FM speed is similar to changing the manifold
pressure. See section 12-18)
5 FM+, FM++ and FM+++
6 (FM speed is increased automatically. See section 12-12))
Fan motor for combustion
Fan motor for exhaust (T-H2-DV only)
7 INPUT- (Maximum gas input is reduced automatically.
See section 12-12)
8 Allow access to operation history
(This switch is for a specialized purposes only, and therefore,
should not be used)
9 N/A
10 Model type
OFF position
No. 6
ON position
OFF position
No. 6
ON position
T-H2-DV/T-H2-OS Service Manual
ON position
Propane
Natural gas
N/A
Enable
No. 5
OFF position
0 %
+12 %
No. 5
OFF position
0 %
+7.3 %
-10%
Maximum input
EEPROM
transfer
N/A
(Default)
T-H2-DV
67
CONFIDENTIAL
Ver. 1.01
OFF position
Disable
Disable
N/A
(Default)
Disable
(Default)
ON position
+6 %
+18 %
ON position
+3.6 %
+11.4 %
Disable
(Default)
data Disable
(Default)
N/A
(Default)
(Default)
T-H2-OS