READ COMPLETE SAFETY INSTRUCTIONS AND INSTALLATION TEMPLATE BEFORE STARTING INSTALLATION

ATTENTION INSTALLER:

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.

This product must be installed in compliance with all local, state and federal codes.

Proper humidification and humidity control also requires that the home be constructed in accordance with local codes and good building practices.

MODEL 700 SERIES HUMIDIFIER

WARNING

1.ELECTRICAL SHOCK HAZARD.

Disconnect electrical power to the furnace before starting installation. Failure to do so could result in serious injury from electrical shock.

2.SHARP EDGES HAZARD. Sharp

edges may cause serious injury from cuts. Use care when making plenum openings and handling ductwork.

3.RISK OF SCALDING. 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.

CAUTION

 

RISK OF PROPERTY AND EQUIPMENT DAMAGE.

1. Do not install humidifier where freezing temperatures

5. Do not connect the Model 700 or 700M power cord to multi-

could occur. The water line could freeze and crack

speed furnace blower motors or blower motors other than 120

causing water damage to the home.

VAC. Premature component failure may result. Use Research

2. Do not install humidifier on the furnace jacket.

Products Corporation Model 50 Current Sensing Relay.

6. When installing Humidifier Control on a downflow furnace,

3. Do not install humidifier on a plenum face where the

ensure blower continues to run after a heat call is satisfied to

blanked off ends of the cooling coil will restrict air

eliminate high temperatures from damaging the Control.

movement through the humidifier.

7. Do not install humidifier where water pressure exceeds

4. Do not set humidity level above recommended or to

125 psi, since damage to the humidifier may result. Follow

recommended level if condensation exists on inside

codes in effect concerning pressure reduction.

windows of any unheated space, as condensation

damage may result. Excess humidity can cause

8. Do not install humidifier on the supply plenum where static

moisture accumulation which can allow the possibility

pressure exceeds 0.4 in. wg.

for mold growth in the home.

 

 

 

SPECIFICATIONS

HUMIDIFIER DIMENSIONS

Width 15 2932

Height (including solenoid valve

and drain spud) 18”

Depth 101132

PLENUM OPENING

1434”W x 14516”H

WATER FEED RATE

6 gph

ELECTRICAL DATA

120 VAC-60 Hz, 0.8 AMP

RECOMMENDED WIRING DIAGRAMS

(SEE STEP 6 ON BACK AND “HUMIDIFIER CONTROL SAFETY AND INSTALLATION INSTRUCTIONS” FOR DETAILED WIRING INSTRUCTIONS)

Model 700

DIGITAL HUMIDIFIER CONTROL

R C A B

ODT W/G Cf

H

INSTALLATION OPTIONS

Typical Installation

Alternate Installation

 

 

RETURN

 

 

HOT WATER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RETURN

 

 

 

 

 

 

SUPPLY

 

 

 

 

 

SUPPLY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NORTH, EAST

 

OR WEST SIDE

CONTINUOUSLY POWERED

OF HOME

24 VAC TRANSFORMER

 

 

PROVIDED WITH HUMIDIFIER

 

IMPORTANT

OUTDOOR TEMPERATURE

DO NOT WIRE TRANSFORMER

INTO FURNACE BLOWER CIRCUIT.

SENSOR OR MANUAL

 

MODE RESISTOR

 

 

24 VAC FURNACE ACCESSORY TERMINAL

 

COMMON

ABOVE EXPECTED

CONSULT FURNACE MANUFACTURER FOR VOLTAGE AND

SNOW LINE

 

OPERATION PARAMETERS OF ACCESSORY TERMINALS.

 

TERMINALS MAY BE LABELED: “HUM”, “ACC” OR “EAC”

 

NOTE: IF 120V, INSTALL 24V TRANSFORMER.

 

NOTE: SEE CONTROL INSTRUCTIONS FOR OTHER WIRING OPTIONS.

SHUT-OFF

 

(SADDLE VALVE)

 

WATER SUPPLY

 

120 VAC OUTLET

90-1206

CONNECT DRAIN LINE HERE

BROWN WIRES

Orientation of Aprilaire Model 700

90-921

Model 700M

IMPORTANT

USE 120 VAC POWER SOURCE OTHER THAN FURNACE MOTOR CIRCUIT. HOWEVER, THE TRANSFORMER CAN BE POWERED OFF

and 700M to Cooling Coils

NOTES

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

 

 

 

 

 

 

SHUT-OFF

 

 

(10VA MINIMUM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(SADDLE VALVE)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WATER SUPPLY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMON

MODEL 50

HICURRENT SENSING RELAY

Aprilaire to

BLANKED OFF

END OF COIL

COOLING COILS IN

WARM AIR PLENUM

1. Models 700 and 700M

are 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

LO

(IF REQUIRED)

be installed

temperature as added

 

IMPORTANT

 

 

FURNACE

WHEN MODEL 50 CURRENT SENSING RELAY IS USED:

 

 

• WIRE MODEL 50 CURRENT SENSING RELAY

 

 

BLOWER MOTOR

120 VAC

 

 

INTO 24 VAC HUMIDIFIER CONTROL CIRCUIT

OUTLET

90-1208

 

ONLY! DO NOT INSTALL IN TRANSFORMER

 

 

 

PRIMARY CIRCUIT.

CONNECT DRAIN LINE HERE

BROWN WIRES

 

 

as shown in relation to cooling coils.

90-922

heat for evaporation.

RESEARCH PRODUCTS CORPORATION • P.O. BOX 1467 • MADISON, WI 53701-1467 • CALL 800/334-6011 • FAX 608/257-4357

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Aprilaire 700 SERIES specifications Model 700 Series Humidifier

700 SERIES specifications

The Aprilaire 700 Series represents one of the leading solutions in whole-home humidification systems, designed to enhance indoor air quality and comfort. This series is particularly noted for its ability to maintain optimal humidity levels, effectively balancing moisture in the air during dry winter months. By doing so, it helps to prevent discomfort, including dry skin, irritated sinuses, and respiratory issues often exacerbated by low humidity.

One of the standout features of the Aprilaire 700 Series is its efficient performance. The series boasts a high output capacity, delivering up to 50 pints of moisture per day, which makes it suitable for homes ranging from 2,400 to 4,000 square feet. This significant coverage ensures that every corner of the home can enjoy the benefits of humidity control.

The 700 Series utilizes advanced technology, including a built-in evaporative system that allows for even distribution of moisture throughout the home. This system works by drawing heated air from the furnace, passing it through a moistened wick, and then releasing it back into the living space. This method not only increases humidity levels but does so without creating excess water, which can lead to mold and mildew issues.

Another key characteristic of the Aprilaire 700 is its user-friendly control system. The model typically features a digital humidistat that allows homeowners to set precise humidity levels according to their preferences. Additionally, the unit can be easily integrated into existing heating systems, making installation straightforward for HVAC professionals.

Maintenance is also a vital aspect of the Aprilaire 700 Series. The unit is designed for easy access to components, allowing users to replace the evaporative wick and perform routine checks without hassle. Regular maintenance ensures that the humidifier operates efficiently and continues to improve air quality year-round.

Safety is paramount with the Aprilaire 700 Series, which features an automatic shut-off mechanism. This ensures that the humidifier does not operate when outdoor humidity levels are adequate, preventing over-humidification and potential damage to both the home and its occupants.

Overall, the Aprilaire 700 Series stands out as a sophisticated solution for managing indoor humidity. With high efficiency, ease of use, and robust safety features, it represents a significant investment in home comfort and well-being.