Display Panel; Operating Instructions; Model 62 Automatic Digital Humidifier Control - Aprilaire Series 800 Owner's Manual

DISPLAY PANEL

TABLE 1 – Display Panel
Indicator Light Function
Off Humidifier is turned off or not receiving power .
Solid
Humidifier is turned on .
green
Humidifier is preparing to turn on . Occurs if power is
Flashing
disconnected, then restored with switch ON . Flashes for one
green
minute .
Normal Operation . Fill valve is energized allowing water
Solid
to flow into canister via fill cup . (Does not illuminate when
green
tempering water during drain cycle .)
Flashing
Fill and Drain Valves are pulsing to dislodge mineral build-up in
green canister . Flashes 10 times in four seconds .
Fault Mode . Indicates canister needs water but cannot fill .
Humidifier shuts down . (Occurs if high water probe does not
Solid Red
detect water after fill valve is energized for 40 minutes .) Call
your heating and air conditioning dealer for service .
Solid Normal Operation . Humidistat is calling for steam and
green humidifier is operating .
Normal Operation . Humidifier is operating but is not delivering
steam at rated capacity . Occurs if humidifier has operated
Solid
for 168 hours at less than rated capacity due to low water
Yellow
conductivity . Light will turn green once water conductivity
increases and humidifier is delivering rated capacity .
Humidifier is preparing to drain . (Fill valve is open tempering
water in canister .) Occurs when humidifier is turned off, at
end of season drain (72 hours with no operation) and during
Flashing
forced drain down (168 hours of operation with no drain
green
activity .)
Fill and Drain Valves are pulsing to dislodge mineral build-up in
canister . Flashes 10 times in four seconds .
Drain valve is energized and open, draining canister . Valve
remains energized for four minutes .
Solid
Indicates end of season shut-down . Occurs if humidifier does
green
not receive call for humidity in 72 hours . Light remains on
for 24 hours . Humidifier will turn on with the next call for
humidity .
Canister has reached the end of its life and needs to be
replaced . Occurs after humidifier has operated for at least 168
Flashing
hours and for an additional 24 hours at a current level below
Red
75% of the maximum operating current . Humidifier continues
to operate, but at reduced capacity .
Operational problem with humidifier . Humidifier shuts down .
Occurs when unit detects over-current which can be caused
Solid Red
by failure to drain or other system failures . Call your heating
and air conditioning dealer for service .
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OPERATINg INSTRUCTIONS – MODEL 62 AUTOMATIC
DIgITAL HUMIDIFIER CONTROL
The Model 62 Automatic Digital Humidifier Control (ADHC) offers two
modes of operation, Automatic or Manual . An explanation of both modes
follows . (See Figure 2 on page 10 for Automatic Mode . See Figure 3 on
page 12 for Manual Mode .)
When in the Automatic Mode, this system offers the following benefits:
• You will receive the optimum amount of humidity so that your
home and its furnishings are protected from the damaging effects
of excess condensation or low humidity during the heating season.
The ADHC automatically adjusts your home's humidity based on the
outdoor temperature, increasing the time maximum comfort is maintained .
• Simple operation with few adjustments. In the Automatic Mode, the
ADHC eliminates the need to manually adjust the control when outdoor
temperature changes . It also eliminates the need to turn the dial setting
to "OFF" during the summer season .

MODEL 62 AUTOMATIC DIgITAL HUMIDIFIER CONTROL

INDICATOR LIgHTS
Call Dealer for Service: The red light indicates that the control is not
operating normally and that service is required .
Humidifier On: The green light indicates that the control is operating
normally and sending a call for humidity to the humidifier .
BLOwER ACTIVATION
Set the "Blower Activation Switch" to "ON" to allow the humidifier control
to activate the HVAC fan for maximum humidification .
If the HVAC system has been idle for one hour, the humidifier control will
activate the HVAC system fan to sample the air for 3 minutes . If the RH is
lower than the set point, the humidifier control will activate the humidifier
and keep the fan running . The humidifier will continue to operate for 2
hours or until the humidification set point is reached .
If the RH set point has not been reached by the end of a call for heat, the
control will continue to operate the humidifier and the HVAC fan until the
humidification set point is reached or 2 hours have elapsed .
When the "Blower Activation Switch" is in the "OFF" position, the humidifier
control will only operate the humidifier if humidity is required and the HVAC
system fan is operating or the HVAC system is producing heat .
NOTE: If used in conjunction with an Aprilaire 8570 Communicating
Thermostat, and the blower activation feature is desired, DO NOT wire the
A B communication terminals .
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