Aprilaire 65 User manual

Model 65 Humidifier Control
Installation Instructions
READ AND SAVE THESE INSTRUCTIONS
CAUTION
1. Read all instructions before beginning installation.
2. Do not adjust humidity set-point above recommended level or to recommended
level if condensation occurs on inside surface of windows or on other surfaces.
Excess condensation can cause damage to structure or furnishings. Excess
moisture can also allow the possibility for mold growth to occur.
3. Do not use solvents or cleaners on or near the display and circuit board.
Chemicals can damage components.
WARNING
1. Improper installation may cause property damage or injury. Installation, service,
and maintenance must be performed by a qualified service technician.
2. 120 Volts may cause serious injury from electric shock. Disconnect electrical
power before starting installation or servicing. Leave power disconnected until
installation/service is completed. This control is not a 120 Volt (line voltage)
device.
SAFETY INSTRUCTIONS
The Model 65 is for use with any humidifier
requiring an ON/OFF signal for a 24 volt circuit.
1
61000790B AA Model 65 Humidifier Control Install.indd 1 10/12/11 9:47 AM

TABLE OF CONTENTS
Safety Instructions.................. 1
Overview .......................... 2
Specifications...................... 2
Materials Provided ................. 3
Location Recommendations ......... 3
Installation
Mount Control . . . . . . . . . . . . . . . . . . . . . 4
Wiring ........................... 5
System Checkout
Power Up ......................... 9
Test Mode ....................... 10
Humidity Setting .................. 10
Offset ........................... 10
Turning On and Setting Control....... 11
Sequence of Operation ............. 11
Troubleshooting
Error Codes ...................... 11
Troubleshooting Guide.............. 12
OVERVIEW
The Aprilaire®Model 65 Humidifier Control provides control of the humidifier from the living
space. The control allows the homeowner to set and adjust the humidity setting and turn
the humidifier on or off from a convenient location. The Model 65 uses an onboard sensor to
monitor the relative humidity in the space in which it is located and displays the measured
relative humidity on the digital display.
ELECTRICAL
Input Voltage and Current Voltage: 24V AC +/-20%
Current: 25mA (nominal), 50mA (max.) at 24V AC
Output Dry Contact, Normally Open – H Terminals
SPECIFICATIONS
CONTROL
Humidity Setting Range 10% – 50% RH
Accuracy +/-5% RH
Differential 3%
Low Temp 40°F
High Temp 99°F
2
61000790B AA Model 65 Humidifier Control Install.indd 2 10/12/11 9:47 AM

LOCATION RECOMMENDATIONS
MOUNT CONTROL
•Inanareathehomeownerwantsto
monitor and control moisture levels.
•Onaninteriorwall.
•Approximately5’offthefloor.
•Atleast18”fromanoutsidewall.
See Figure 1.
DO NOT MOUNT CONTROL
• Intheflowofasupplyregister.
•Behinddoors,incornersorotherdeadairspaces.
•Indirectsunlight,nearlightingfixtures,orother
appliances that give off heat.
•Onanoutsideorunconditionedareawall.
•Instairwellsornearoutsidedoors.
•Onawallwithconcealedpipesorductwork.
FIGURE 1 – Mounting Location
90-1666
MATERIALS PROVIDED
MATERIALS PROVIDED
•Wall-MountControl
•MountingScrews
•DrywallAnchors
•RHSettingLabel
MATERIALS NOT PROVIDED
•Wires
•WireNuts
A self-adhesive label (RH Setting Label) showing recommended RH settings based on outdoor
temperature is provided. The label can be attached to the front of the control to serve as a
guideline and a reminder for the homeowner to adjust the RH setting as outdoor temperature
changes.
3
61000790B AA Model 65 Humidifier Control Install.indd 3 10/12/11 9:47 AM

INSTALLATION
MOUNT CONTROL
PULL APART
FRONT COVER
BACK
PLATE
RH SETTING
LABEL
H
H
R
C
FIGURE 2 – Disassemble Control
90-1667
See Figures 2 & 3.
1. Remove front cover by pulling straight out.
2.Positionthebackplateonthewallandmarkthelocationsforthewireaccessholeandthe
mounting screws. NOTE:Themountingholescanalsobeusedtosecurethebackplatetoa
standard horizontally mounted junction box.
3.Formountingondrywall,drilltwo3/16”dia.mountingholesanda3/4”openingforthewires.
4. Insert the drywall anchors provided into the mounting holes flush with the wall surface.
5. Run 4-wire cable from the humidifier to the control location.
6.Securebackplateusingthetwo#8x1-1/2”screwsprovided.
7.Afterconnectingthewires,tuckexcesswireintothewallandfilltheopeningwithinsulating
material. Failure to seal the opening may result in inaccurate operation due to drafts.
4
61000790B AA Model 65 Humidifier Control Install.indd 4 10/12/11 9:47 AM

H
H
R
C
BACK PLATE
ANCHOR
SCREW
MOUNTING HOLES
WIRE ACCESS OPENING
4-CONDUCTOR WIRE
FIGURE 3 – Mount Back Plate
90-1668
WIRING
WIRING – Model 65 with Aprilaire Model 400, 500, 600, and 700 Series
Evaporative Humidifiers
The Model 65 control requires 24VAC. Drawing power from the HVAC system is the
recommended method for this installation. See Figures 4 & 5.
1. Disconnect power to the humidifier and HVAC system.
2. Connect the C and R terminals on the Model 65 to the HVAC or thermostat C and R terminals.
3. Connect Model 65 H terminals to the humidifier solenoid valve control circuit as shown.
4.Snapthefrontcoverontothebackplate.The4-pinterminalalignswiththeterminalblock
receptacleonthebackplate.
5. Proceed to SYSTEM CHECKOUT on page 9.
5
61000790B AA Model 65 Humidifier Control Install.indd 5 10/12/11 9:47 AM

APRILAIRE
EVAPORATIVE
HUMIDIFIER
SOLENOID VALVE
CIRCUIT WIRES
ACCESSORY
TERMINALS
MODEL 65 CONTROL HVAC EQUIPMENT
FIGURE 4 – Recommended Wiring for Model 65 Control and Evaporative Humidifier
90-1669
APRILAIRE
EVAPORATIVE
HUMIDIFIER
SOLENOID VALVE
CIRCUIT WIRES
MODEL 65 CONTROL HVAC EQUIPMENT
24VAC
CONTINUOUSLY
POWERED
TRANSFORMER
COMMON
MOTOR
LEAD
HVAC BLOWER
MODEL 50
RELAY
FIGURE 5 – Alternate Wiring for Model 65 Control and Evaporative Humidifier
90-1671
6
61000790B AA Model 65 Humidifier Control Install.indd 6 10/12/11 9:47 AM

WIRING – Model 65 with Model 800 Steam Humidifier
The Model 65 control requires 24VAC. See Figure 6.
1.DisconnectpowerfromtheModel800andHVACsystem.
2. Connect 24VAC to the C and R terminals on the Model 65.
3.ConnecttheHterminalsontheModel800totheHterminalsontheModel65.
4.SnaptheModel65frontcoveronthebackplate.The4-pinterminalalignswiththeterminal
blockreceptacleonthebackplate.
5. Proceed to SYSTEM CHECKOUT on page 9.
NOTE:IftheModel800SteamHumidifierisinstalledwithaModel850FanPack,theModel
65Controlcanbepoweredfromthe24VACsecondarywiresontheModel800transformer,by
splicing into the wires using tap connectors. See Figure 7.
MODEL 800
STEAM HUMIDIFIER
MODEL 65 CONTROL
HVAC EQUIPMENT
HUMIDISTAT
TERMINALS
COMMON
MOTOR LEAD MODEL 50
RELAY
HVAC BLOWER
FIGURE 6 – Recommended Wiring for Model 65 Control
and Model 800 Steam Humidifier
90-1672
7
61000790B AA Model 65 Humidifier Control Install.indd 7 10/12/11 9:47 AM

FAN PACK HUMIDISTAT
TRANSFORMER
24VAC
24VAC
24V COM
MODEL 850 STEAM HUMIDIFIER FAN PACK
MODEL 65
DIGITAL CONTROL
APRILAIRE MODEL 800 HUMIDIFIER
WIRE – 18 AWG ACCEPTABLE FOR
24 VAC APPLICATION.
TAP CONNECTORS
CIRCUIT BOARD
TRANSFORMER
FIGURE 7 – Recommended Wiring for Model 65 Control and Model 800 Steam
Humidifier with Model 850 Fan Pack
90-1662
8
61000790B AA Model 65 Humidifier Control Install.indd 8 10/12/11 9:47 AM

SYSTEM CHECKOUT
POWER UP
1.Checkallwiring.
2. Restore power to the HVAC system and humidifier.
3. After a 4 second start up sequence all buttons on the Model 65 will be functional.
 •ThecontrolwillbeOFF.
 •Thehumiditysettingwillbe30%.
 •Thecontrolwilldisplaythemeasuredhumidity.
FIGURE 8
90-1670
Model 65 Control
Model 65 LCD Display
Blinking ON +*: Temp Limits Exceeded.
See Operating Limits, page 11.
Solid ON:
Control On
Blinking ON:
Humidifying
Measured
Humidity or
Setting
Control On/Off
Humidity Setting
and Offset
Adjustment
Control must be
ON to adjust offset
and setting.
SET: Shows when
humidity setting is
displayed or being
changed.
OFF: Control Off
9
61000790B AA Model 65 Humidifier Control Install.indd 9 10/12/11 9:47 AM

TEST MODE
1. Press and hold the ON button for 5 seconds to enter Test Mode.
 a.VerifyallLCDsegmentsblinkeverysecond.
b. Verify humidifier turns on.
2. After 5 minutes or after pressing the OFF button, the control will enter Off mode.
Verify the humidifier turns off.
HUMIDITY SETTING
•ThecontrolmustbeONtoadjustthehumiditysetting.
•The (up) and (down) buttons are used to increase or decrease the humidity setting.
•ThefirstpressofeitherbuttonwilldisplaythecurrentsettingontheLCDdisplayandSET
will be displayed below the % sign.
•Eachsubsequentpushoftheupordownbuttonswillchangethesettingby1%.
•Ifabuttonishelddown,thesettingwillcontinuallychangeby1%every1/2secondforas
long as the button is pressed.
•ThecontrolwillreturntoNormalMode,displayingthemeasuredhumidity,5secondsafter
the last button press/release.
OFFSET
An offset can be applied to the humidity reading to
avoid discrepancies with other humidity measuring
devicesinthehome.Allow48hoursforthecontrolto
acclimate before applying an offset. The control must
be ON to enter the Offset screen.
•PressandholdtheOFFbuttonfor5secondsto
enter the Offset screen. See Figure 9.
•The buttons can be used to set an offset
value between -5% RH and +5% RH.
•ThecontrolwillreturntoNormalMode,displaying
the measured humidity, 5 seconds after the last
button press/release.
FIGURE 9 – Offset Screen
90-1638
10
61000790B AA Model 65 Humidifier Control Install.indd 10 10/12/11 9:47 AM