Aprilaire 700 Instructions

READ COMPLETE SAFETY INSTRUCTIONS AND INSTALLATION TEMPLATE BEFORE STARTING
This product must be installed by a qualified heating and air conditioning contractor. Failure to do so could result in serious injury from electrical shock.
WARNING
ELECTRICAL SHOCK HAZARD.
1.
Disconnect electrical power to the
furnace before starting installation.
Failure to do so could result in serious
injury from electrical shock.
SHARP EDGES HAZARD.
2. Sharp
edges may cause serious injury from cuts.
Use care when making plenum openings
and handling ductwork.
RISK OF SCALDING.
3. Water
temperature over 125°F can cause severe
burns and scald instantly. Shut off the hot
water supply before disconnecting or
tapping into any hot water supply line.
(SEE STEP 7 ON BACK AND "HUMIDIFIER CONTROL SAFETY AND INSTALLATION INSTRUCTIONS" FOR DETAILED WIRING INSTRUCTIONS)
I+ I-
COMMUNICATION
TERMINALS FOR 8570
THERMOSTAT
24 VAC FURNACE ACCESSORY TERMINALS
(2 VA MINIMUM) OR
24 VAC TRANSFORMER (2 VA MINIMUM)
SHUT-OFF
(SADDLE VALVE)
WATER SUPPLY
120 VAC OUTLET
CONNECT DRAIN
LINE HERE
90-1099
ATTENTION INSTALLER:
This product must be installed in compliance with all local, state and federal codes.
AUTOMATIC HUMIDIFIER MODEL 700
RISK OF PROPERTY AND EQUIPMENT DAMAGE.
1. Do not install humidifier where freezing temperatures
could occur. The water line could freeze and crack
causing water damage to the home.
2. Do not install humidifier on the furnace jacket.
3. Do not install humidifier on a plenum face where the
blanked off ends of the cooling coil will restrict air
movement through the humidifier.
4. Do not set humidity level above recommended or to
recommended level if condensation exists on inside
windows of any unheated space, as condensation
damage may result. Excess humidity can cause
moisture accumulation which can allow the possibility
for mold growth in the home.

WIRING DIAGRAM

R C H ODT
24V
FURNACE
BLOWER
COMMON
MODEL 50 CURRENT SENSING RELAY
(NOT SUPPLIED) REQUIRED IF 120 VOLT
POWER SOURCE FOR HUMIDIFIER AND
24 VOLT POWER SOURCE FOR CONTROL
ARE POWERED CONTINUOUSLY.
BROWN WIRES
CAUTION
5. Do not connect the Model 700 power cord to multi-speed
furnace blower motors or blower motors other than 120 VAC.
Premature component failure may result. Use Research
Products Corporation Model 50 Current Sensing Relay.
6. When installing Aprilaire Humidifier Control on a downflow
furnace, ensure blower continues to run after a heat call is
satisfied to eliminate high temperatures from damaging the
Control.
7. Do not install humidifier where water pressure exceeds
125 psi, since damage to the humidifier may result. Follow
codes in effect concerning pressure reduction.
8. Do not install humidifier on the supply plenum where static
pressure exceeds 0.4 in. wg.
NOTE:
FOR INSTALLATION IN MANUAL MODE,
REPLACE OUTDOOR TEMPERATURE
SENSOR WITH PLASTIC RESISTOR CASE
AND ATTACH MANUAL FACE PLATE.
SEE "HUMIDIFIER CONTROL SAFETY
AND INSTALLATION INSTRUCTIONS"
INCLUDED WITH EACH HUMIDIFIER.
NORTH, EAST
OR WEST SIDE
OF HOME
OUTDOOR
TEMPERATURE
SENSOR
ABOVE EXPECTED
SNOW LINE
P.O. BOX 1467 • MADISON, WI 53701-1467 • CALL 800/334-6011 • FAX 608/257-4357
INSTALLATION OPTIONS
Typical Installation
RETURN
SUPPLY
Orientation of Aprilaire Model 700
to Cooling Coils
BLANKED OFF
END OF COIL
COOLING COILS IN
WARM AIR PLENUM
Aprilaire to
be installed
as shown in
relation to
cooling coils.

SPECIFICATIONS

HUMIDIFIER DIMENSIONS
29
Width 15 ⁄ "
32
Height
(including solenoid valve
18"
and drain spud)
11
Depth 10 ⁄ "
32
PLENUM OPENING
3 5
14 ⁄ "W x 14 ⁄ "H
4 16
WATER FEED RATE
6 gph
ELECTRICAL DATA
120 VAC-60 Hz, 0.8 AMP
Alternate Installation
HOT WATER
RETURN
SUPPLY
90-921
NOTES
1. The Model 700 is not
suitable for installation
on ducts with horizontal
airflow. Performance
will be reduced.
2. When installing Aprilaire
humidifier on a heat
pump system, use hot
water. The heated
water supplements the
reduced supply air
temperature as added
heat for evaporation.
90-922