Aprilaire S86W MUPR Safety & Installation Instructions page 15

TABLE 2 – HUMIDIFIER SYSTEM SETTINGS
System setting Description
Selects when humidification is allowed
to occur relative to heating and fan
operation NOTE: Without Fan is only
Allowed available when Humidifier Installed
Humidifier is set to Yes/Standalone It allows
Operation humidification to occur without
activating an HVAC fan and should only
be used when the humidifier is mounted
independently of any HVAC system
When Humidifier Operation is set to Without Fan the thermostat will turn on
humidification without energizing the HVAC fan. Do not select this option when the
humidifier is installed on the HVAC duct. Without airflow moisture can accumulate in the
duct resulting in significant damage.
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Factory default setting (bold)
and setting range
Heat Only
Heat or Fan
Forces Fan
Without Fan
CAUTION
TABLE 2 – HUMIDIFIER SYSTEM SETTINGS
System setting Description
Humidifier Selects when the "Change Water Panel"
Reminder message is displayed
Single or First Determines the month the first (or only)
Reminder "Change
Appears Water Panel" message is displayed
Determines the month the second
Second "Change Water
Reminder Panel" message is displayed (Only
Appears available when 2 reminders per season
is selected)
Factory default setting (bold)
and setting range
Off
150h Valve
300h Valve
600h Valve
1 per season
2 per season
October
April
November May
December June
January July
February August
March September
October April
November May
December June
January
July
February August
March September
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