High Altitude Region Support Software (Fm+ And Input-) - A.O. Smith 710 ASME Service Manual

12-12. High-Altitude Region Support Functions (FM+ and INPUT-)
＜Using this function＞
The high-altitude region support functions have three operation levels,
with the appropriate level being set up by the installer until the abnormal
sound problem is solved. The desired level can be specified at the right
bank of dipswitches (No.2 and No.3) on the computer board.
Level
0
the fan motor speed increased
1
by 7.5% (FM+ function)
Reduction of the max gas input
2
by 10% (INPUT- function)
the fan motor speed increased
by 7.5% (FM+ function)
3
Lowers the max. input by 10%
If the abnormal sound problem persists even with a "Level 3" setting, please contact our
Technical Service Department. for advice. Note that there are many high risks associated with
CAUTION
manually changing the manifold pressures.
Function
Standard setting
(Default)
&
（INPUT- function）
710 / 710 ASME Service Manual
Setting Method
Right bank of dipswitches No.2 OFF
Right bank of dipswitches No.2 ON
Right bank of dipswitches No.2 OFF
Right bank of dipswitches No.2 ON
64
CONFIDENTIAL
Ver. 1.00
Right bank of dipswitches
No.3 OFF
No.3 OFF
No.3 ON
No.3 ON