Afr Rod Function - A.O. Smith 240 T-H3J Service Manual

12-5. AFR rod function

240 (T-H3J) models
Combustion
340 (T-H3J) models
Combustion
540 (T-H3) models
Combustion
These values are read with the front cover close.
Stage
FM
16
15
6
0
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Installation type
Gas type Propane
12.0 to 35.0 23.6 to 58.0
mode
5.0 to 20.0
Installation type
Gas type
19.0 to 52.0 24.6 to 65.0
mode
5.0 to 20.0
Installation type
Gas type Propane
20.0 to 57.0 26.2 to 78.0
mode
5.0 to 20.0
"991" error code
"101" error code
66
Direct vent
Natural gas
3.5 to 11.0
Direct vent
Propane Natural gas
3.5 to 11.0
Direct vent
Natural gas
3.5 to 11.0
and AFR combustion stage goes down.
automatically increased and AFR
combustion stage goes up.
see section 12-4.
Page
CONFIDENTIAL
Ver. 1.00
Outdoor
Propane Natural gas
6.0 to 41.0 17.1 to 55.0
3.0 to 15.0 3.8 to 19.0
Outdoor
Propane Natural gas
7.0 to 47.0 21.4 to 56.0
3.0 to 15.0 3.8 to 19.0
Outdoor
Propane Natural gas
7.0 to 48.0 22.3 to 60.0
3.0 to 15.0 3.8 to 19.0