Aprilaire 700 Application Manual page 5

TyPICAl WIRInG dIAGRAMS – GAS oR eleCTRIC HeAT
MAnuAl HuMIdIFIeR ConTRol WIRInG
IMPORTANT
USE 120 VAC POWER SOURCE OTHER THAN FURNACE MOTOR
CIRCUIT. HOWEVER, THE TRANSFORMER CAN BE POWERED
OFF THE HOT 120 VAC LINE BEFORE IT ENTERS THE FURNACE.
• DO NOT WIRE TRANSFORMER INTO FURNACE BLOWER CIRCUIT.
24 VAC FURNACE
ACCESSORY TERMINALS
OR TRANSFORMER
(10VA MINIMUM)
COMMON
HI
LO
FURNACE
BLOWER MOTOR
MODEL 50
CURRENT
SENSING RELAY
(IF REQUIRED)
IMPORTANT
WHEN MODEL 50 CURRENT SENSING RELAY IS USED:
• WIRE MODEL 50 CURRENT SENSING RELAY INTO
24 VAC HUMIDIFIER CONTROL CIRCUIT ONLY!
DO NOT INSTALL IN TRANSFORMER PRIMARY CIRCUIT.
MAnuAl ConTRol
WITH BloWeR ACTIVATIon WIRInG
REMOVE WIRE
TYPICAL 24 VAC
"G" TO "G"
TERMINAL STRIP
THERMOSTAT IN FURNACE
NOTE: 18AWG WIRE IS ACCEPTABLE
FOR 24V INSTALLATIONS.
NOTE: FOR MAXIMUM CAPACITY PLUMB
HUMIDIFIER TO HOT WATER WHEN USING
THIS WIRING CONFIGURATION.
AuToMATIC dIGITAl HuMIdIFIeR ConTRol
WITH Model 800 STeAM HuMIdIFIeR
MODEL 62 DIGITAL HUMIDIFIER CONTROL
24 VAC from HVAC
Equipment "R" & "C"
Communication with
Aprilaire 8570 Thermostat
Outdoor Temperature Sensor
Heat Signal from HVAC Equipment
Fan Signal from Thermostat
SHUT-OFF
(SADDLE VALVE)
WATER SUPPLY
YELLOW
24V SOLENOID
VALVE WIRES
CONNECT DRAIN LINE HERE
90-1207
APRILAIRE
4851 RELAY
APRILAIRE
HUMIDIFIER
500 & 600 SERIES
YELLOW WIRES
WHITE/YELLOW
700 SERIES (GRAY)
BROWN WIRES
WHITE/BLUE
CONSTANT
24VAC
MIN. 10VA
TERMINALS FOR THE
MANUAL HUMIDIFIER CONTROL
(MHC)
24V TERMINALS
R C A B ODT W G H H Gf
Fan Signal to HVAC Equipment
C
NO
NC
OPTIONAL:
AIR FLOW PROVING SWITCH #4592
Connect 1/4" plastic tubing from H (High) side
of proving switch to the airflow sensing probe
located 1.5 duct diameters downstream of
blower. Leave L (Low) side open to amosphere.
C NO NC
OPTIONAL:
HIGH HUMIDITY LIMIT SWITCH #4594
Switch breaks C to NC connection when
measured RH is above setpoint RH.
dIGITAl MAnuAl ConTRol WIRInG
MODEL 65 CONTROL
AuToMATIC dIGITAl ConTRol WIRInG
NORTH, EAST
OR WEST SIDE
OF HOME
OUTDOOR
TEMPERATURE
SENSOR FOR
AUTOMATIC
MODE
ABOVE EXPECTED
SNOW LINE
R
R
C
C
G
G
Y
Y
W
W
THERMOSTAT FURNACE
HoMe CoMFoRT ConTRol
THERMOSTAT
90-1407
IAQ THeRMoSTAT WIRed To ConTRol A HuMIdIFIeR
NOTE:
THE MODEL 800 STEAM HUMIDIFIER
IS POWERED INTERNALLY.
DO NOT ADD A TRANSFORMER
90-1544
HVAC EQUIPMENT
COMMON
MOTOR
LEAD
HVAC BLOWER
MODEL 50
APRILAIRE
RELAY
EVAPORATIVE
HUMIDIFIER
24VAC
SOLENOID VALVE CONTINUOUSLY
CIRCUIT WIRES POWERED
TRANSFORMER
ADHC TERMINAL STRIP
POWER INPUTS OUTPUTS
R C A B ODT W G H H Gf
YELLOW
WIRES
CONNECT TO
HOT WATER SUPPLY
110 VAC
CONTINUOUSLY POWERED
24 VAC TRANSFORMER
PROVIDED WITH HUMIDIFIER
WIRInG
™
C
TRANSFORMER
R
1
RC
2
RH
3
HC HP
W W 1 HEATING
st
W2 W2 2 HEATING
nd
W3 B 3 HEATING
rd
Y Y 1 COMPRESSOR
st
Y2 Y2 2 COMPRESSOR
nd
Y3 O 3 COMPRESSOR
nd
G G
FAN
L
C
EQ
TRANSFORMER
HUMIDIFIER
HUM
DHno DEHUMIDIFIER
DH com
DH nc
TRANSFORMER
8120 DAMPER
VNT
TRANSFORMER
PILOT RELAY FOR
120 V AC TO EAC
EAC
I2 C I1 O/B Y Y2 G RC R W2 W L S2
90-1671
CONNECT DRAIN
LINE HERE
90-1510
NOTE:
THE MODEL 800 STEAM HUMIDIFIER
IS POWERED INTERNALLY.
DO NOT ADD A TRANSFORMER
90-1820
90-1822
S1 T1 T2
5