0-2000 ft
(0-610 m)
2001-5200 ft
(610-1585 m)
5201-7700 ft
(1585-2347 m)
7701-10200 ft
(2347-3109 m)
#2: OFF
#2: OFF
#2: ON
#2: ON
#3: OFF
#3: ON
#3: OFF
#3: ON
Dip Switch Settings
100/101 and 200/201 Series
SW1 Bank
SW2 Bank
(present on replacement PC boards only)
OFF - 305e, 305i, 505e, 505i,
705e/o (ASME), 705i (ASME)
OFF - 505e/o, 505i, 705e/o (ASME), 705i (ASME)
ON - 305e/o, 305i
OFF - 305e, 305i, 505e, 505i, 705e/o (ASME),
705i (ASME)
1
OFF - Propane Gas
ON - Natural Gas
2
OFF - Outdoor model
ON - Indoor model
3
4
5
6 OFF
position
1
OFF - “Long Flue”
ON - “Short Flue” and Outdoor Models
2
Settings dependent on altitude
3
4
OFF - if using standard controller
5
OFF - 120ºF default temperature without a
controller
ON - 140ºF default temperature without a
controller
6 OFF
position
7
OFF position - Used for low fire and high fire
settings. Refer to the gas pressure setting
procedure.
8
“Long flue” is defined as:
0 elbows and length is greater than 21 ft
1 elbow and length is greater than 15 ft
2 elbows and length is greater than 9 ft
On-Demand Gas Tankless Water Heater Service Manual
58