Aprilaire 700A Installation Manual

The current Model 700 is identical to the previous Model 700A (except the 700A came with a 2nd spare water panel), Aprilaire has not updated this manual from the 700A.
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.
LARGE FAN POWERED HUMIDIFIER MODEL 700M AND 700A
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.
RECOMMENDED WIRING DIAGRAMS
(SEE STEP 6 ON BACK AND "HUMIDIFIER CONTROL SAFETY AND INSTALLATION INSTRUCTIONS" FOR DETAILED WIRING INSTRUCTIONS)
IMPORTANT
Model 700M
USE 120 VAC POWER SOURCE OTHER THAN FURNACE MOTOR
CIRCUIT. HOWEVER, THE TRANSFORMER CAN BE POWERED OFF
MANUAL CONTROL
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 700A
AUTOMATIC DIGITAL
HUMIDIFIER CONTROL
R
NORTH, EAST
OR WEST SIDE
CONTINUOUSLY POWERED
OF HOME
24 VAC TRANSFORMER
PROVIDED WITH HUMIDIFIER
IMPORTANT
DO NOT WIRE TRANSFORMER
OUTDOOR TEMPERATURE
INTO FURNACE BLOWER CIRCUIT.
SENSOR OR MANUAL
MODE RESISTOR
24 VAC FURNACE ACCESSORY TERMINAL
CONSULT FURNACE MANUFACTURER FOR VOLTAGE AND
ABOVE EXPECTED
SNOW LINE OPERATION PARAMETERS OF ACCESSORY TERMINALS.
TERMINALS MAY BE LABELED: "HUM", "ACC" OR "EAC"
NOTE: IF 120V, INSTALL 24V TRANSFORMER.
24V ACTIVATED WITH HEAT CALL.
NOTE: SEE CONTROL INSTRUCTIONS FOR OTHER WIRING OPTIONS.
ATTENTION INSTALLER:
This product must be installed in compliance with all local, state and federal codes.
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.
SHUT-OFF
(SADDLE VALVE)
WATER SUPPLY
MODEL 50
CURRENT SENSING RELAY
(IF REQUIRED)
IMPORTANT
WHEN MODEL 50 CURRENT SENSING RELAY IS USED:
• WIRE MODEL 50 CURRENT SENSING RELAY
120 VAC
INTO 24 VAC HUMIDIFIER CONTROL CIRCUIT
OUTLET
ONLY! DO NOT INSTALL IN TRANSFORMER
PRIMARY CIRCUIT.
CONNECT DRAIN LINE HERE
C A B ODT W/G Cf H
SHUT-OFF
(SADDLE VALVE)
WATER SUPPLY
COMMON
120 VAC OUTLET
CONNECT DRAIN LINE HERE
RESEARCH PRODUCTS CORPORATION • P.O. BOX 1467 • MADISON, WI 53701-1467 • CALL 800/334-6011 • FAX 608/257-4357
For Aprilaire Humidifier Parts Drawing 2007, click here.
CAUTION
5. Do not connect the Model 700M or 700A 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.
Typical Installation
RETURN
90-1208
BROWN WIRES
Orientation of Aprilaire Model 700M
and 700A to Cooling Coils
Aprilaire to
be installed
as shown in
relation to
90-1206
cooling coils.
BROWN WIRES

SPECIFICATIONS

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