Aprilaire 8400 Series Safety & Installation Instructions page 8

SETUP & TESTING
SYSTEM SETUP INSTRUCTIONS
(CONTINUED)
System setting
09 1st stage differential
10 2nd stage differential (8448, 8466)
11 3rd and 4th stage differential (8448HP, 8466HP)
12 Reverse valve (8446, 8448HP, 8465, 8466HP)
13 Stage rate*
14 Deadband (auto mode)
15 Progressive recovery (8463, 8465, 8466)
16 Low Balance Pt . (8446, 8448HP, 8465, 8466HP)
System setting 05 must be enabled
* Accumulation of equipment run time in equipment staging determination .
1 = more rapid staging of equipment (comfort) .
5 = slower staging of equipment (economy) .
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Setting range, default in bold
1°F (0.5°C)
1°F to 4°F (0 .5°C to 2°C)
1°F (0.5°C)
1°F to 4°F (0 .5°C to 2°C)
1°F (0.5°C)
1°F to 4°F (0 .5°C to 2°C)
0 – O/B energized in cooling (O)
1 – O/B energized in heating (B)
2
1 to 5 or "OFF" to disable
3°F (2°C)
2°F to 5°F (1°C to 3°C)
0 : Progressive recovery is disabled
1 : Progressive recovery is enabled
20°F (-7°C)
0°F to 60°F (-18°C to 16°C) or "OFF" to disable
SETUP & TESTING
SYSTEM SETUP INSTRUCTIONS
(CONTINUED)
System setting
17 High Balance Pt . (8446, 8448HP, 8465, 8466HP)
System setting 05 must be enabled
19 Program format (8463, 8465, 8466)
20 Change air filter
21 Change water panel**
Set number of months until reminder is required
22 Humidifier type**
23 Service dehumidifier
24 Service HVAC
25 2 or 4 Program Events
** If humidifier type is set to Drain-less, then the first reminder is based on the system setting 21, second
reminder will activate 3 months later . If humidifier type is set to Flow through, then the first reminder is based
on system setting 21, second reminder will activate 12 months later .
Setting range, default in bold
65°F (18°C)
0°F to 80°F (-18°C to 27°C) or "OFF " to disable
0 – 5/2 program (Weekdays and Weekends)
1 – 5/1/1 program (Weekdays, Sat . and Sun .)
OFF
1, 3, 6, 12 months or "OFF" to disable
OFF
1 to 12 months or "OFF" to disable
0 : Flow through type humidifier (1 reminder per season)
1 : Drain-less type humidifier
(2 reminders per season)
OFF
1 to 12 months or "OFF" to disable
OFF
1 to 12 months or "OFF" to disable
0 = WAKE and SLEEP
1 = WAKE, LEAVE, RETURN, SLEEP
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