Aprilaire Dehumidifier 1700 User Manual

Wire

Routing

Port

Wiring

Access

Filter

Access

Humidity

Control Inlet

Drain

On/Off

Switch

Filter

Access

Service Access

PortOutlet

Safety and Installation Instructions

Model 1700

Dehumidifier

INSTALLER – PLEASE NOTE!

1. Installation must conform to all applicable codes.

2. A dedicated 15 Amp circuit is required for proper operation of the dehumidifier. If a dedicated circuit is not available, do not install unit.

3. For protection of the compressor, unit must be

transported and installed in an upright position.

If the unit was shipped or stored on its side, a 24 hour settling period is required before running the unit.

TABLE OF CONTENTS

Safety Instructions . . . . . . . . . . . . . . .2

Overview . . . . . . . . . . . . . . . . . . . . . . .2

Specifications . . . . . . . . . . . . . . . . . . .2

Location Notes . . . . . . . . . . . . . . . . . .2

Ducting . . . . . . . . . . . . . . . . . . . . . . . .3

Drain Line . . . . . . . . . . . . . . . . . . . . . .3

Hanging . . . . . . . . . . . . . . . . . . . . . . .3

Installations

Whole House . . . . . . . . . . . . . . . . . . .4

Localized . . . . . . . . . . . . . . . . . . . . . . .6

Whole House / Localized

Convertible . . . . . . . . . . . . . . . . . . . . .8

Ventilation and Fan Cycling . . . . . . .10

Float Switch . . . . . . . . . . . . . . . . . . .12

Dip Switch Definitions . . . . . . . . . . .12

System Checkout . . . . . . . . . . . . . . .13

Troubleshooting . . . . . . . . . . . . . . . .14

Sequences

of Operations . . . . . . . . . . .Back Cover

SAFETY INSTRUCTIONS

OVERVIEW

SPECIFICATIONS

WARNING

• 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 or damage to product.

• 120 volts may cause serious injury from electric shock. Disconnect electrical power before starting installation. Leave power disconnected until installation is completed.

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

• Unit weight and dropping may cause personal injury or equipment damage. Handle with care.

Dimensions: 203⁄4”W x 24”L x 207⁄8”H (mounting feet fully engaged)

⁄4”W x 24”L x 223⁄8”H (mounting feet fully extended)

Weight: 93 lbs

Capacity: 90 pints per day @ 60%RH, 80°F

(ANSI/AHAM DH-1-2003 conditions)

Power: 115 VAC, 8 Amps. Unit is equipped with an 8 ft. grounded power cord.

The purpose of the Aprilaire Dehumidifier is to keep the humidity in the house at acceptable limits to reduce the unwanted effects of high humidity. The dehumidifier will measure the dewpoint of the house to decide if it needs to run. The dryness set point can be adjusted with the control knob on the inlet side of the unit.

An integrated air cycling feature can be used to turn on the HVAC fan to cycle the air through the house to balance the indoor conditions. This feature is set up during installation based on house size and homeowner preference. An optional ventilation damper can also be installed to bring in outside air during air cycling.

LOCATION NOTES

The dehumidifier can be installed in a wide variety of locations (including unconditioned spaces), provided the ambient conditions are between 40°F and 150°F. Note the following requirements for each application:

Attic / Garage

• All duct work must be insulated.

• Unit should be placed in a drain pan with overflow protection to prevent water damage in the event of a drain failure.

• The condensate line should be insulated to prevent condensation on the outside of the condensate line.

• Precautions should be taken to assure that the unit does not operate in conditions below 40°F or above 150°F.

Basement

• Precautions should be taken to assure that the unit does not operate in conditions below 40°F.

Crawl Space

• All duct work must be insulated.

• The condensate line should be insulated to prevent condensation on the outside of the condensate line.

• Precautions should be taken to assure that the unit does not operate in conditions below 40°F.

Design Airflow: 275 CFM @ 0.6 in. w.c.

Filter: MERV 8 Filter

Cabinet Insulation: 1” foil faced EPS insulation

Inlet Air Operating Conditions: 40°F to 105°F

Ambient Air Operating Conditions: 40°F to 150°F

The included condensate trap must be installed to the Model

1700. Use PVC primer and cement to connect the trap to the drain outlet on the Model 1700. The drain outlet is located near the On/Off toggle switch. Note

orientation of trap prior to cementing. The high side of the

trap mates with the Model 1700. The adjustable legs on the Model 1700 must be disengaged approximately 1” to accommodate the trap. Complete the assembly by piping the trap to a drain. The trap must be primed with water prior to start-up.

If the 1700 is installed in an attic or in an area where flooding is a potential problem, it should be installed in a secondary drain pan with a condensate overflow safety switch. See page 12 for condensate overflow safety switch wiring.

If hanging the unit, use two unistruts to support the base on the outside edges of the feet locations. There must be at least 20” of clearance in front of one of the filter access doors to allow removal of the filter.

DRAIN LINE

HANGING

DUCTING

The Aprilaire Dehumidifier is supplied with two 8” round collars. These are packaged with a condensate trap inside the unit behind the filter access panel. When installing the collar make sure the foam seal uniformly contacts the cabinet and secure with 4 screws (not included). UL approved 8” diameter, insulated flexible duct is recommended for all connections. Rigid metal duct may be used. The duct should be capable of handling at least 2” w.c. of positive and 0.75” w.c. of negative pressure. All joints and seams must be sealed.

Design air flow is 275 CFM @ 0.6” w.c. This is equivalent to 70 ft. of 8” duct on the inlet and outlet side of the dehumidifier. Elbows, turns and the static pressure of the HVAC equipment will affect the airflow through the dehumidifier.

• For optimal moisture removal, airflow should be at or above

275 CFM.

• The total static pressure across the dehumidifier must not exceed 0.8” w.c. Check all pressures with the HVAC fan on.

• The outlet from the dehumidifier to the HVAC supply duct must be located at least 6” downstream of the cooling coil.

• If connected to HVAC ductwork, the dehumidifier inlet must be located at least 6” upstream of the HVAC system air cleaner. This will prevent any trapped particulates from being drawn into the dehumidifier.

• If UV Germicidal lamps are installed in the HVAC system, use appropriate methods to protect the flexible duct from the UV light.

• If air noise is a problem, install at least 5 feet of acoustical flexible duct on the outlet and inlet of the dehumidifier.

FIGURE 1

90-961

FIGURE 2

90-970

Drain Outlet

High Side

/2”

Drain Trap

21/2”

Low Side

3“ MIN

CLEARANCE FOR

ACCESS PANEL

TOP VIEW

20” MINUMUM

CLEARANCE FOR FILTER

(EITHER SIDE)

FILTER

6" MIN CLEARANCE FOR FILTER

WHOLE HOUSE INSTALLATION AND OPERATION

In this configuration the dehumidifier will pull air from the return duct. The air passes through the dehumidifier, where moisture is removed, and then returned to the HVAC system downstream of the cooling coil in the supply plenum. This installation is used when the HVAC unit conditions the area where dehumidification is needed. Connection to the HVAC unit for the primary living space or basement HVAC unit is ideal for this installation.

1 – 6508 Normally Closed Power Open Damper

Duct Work

24 VAC Transformer (10 VA minimum)

Thermostat Wire

REQUIRED COMPONENTS OPTIONAL COMPONENTS

6506 Ventilation Damper

24 VAC Transformer (10 VA minimum) for Ventilation Damper

8052 Outdoor Temperature Sensor

Normally Closed Condensate Overflow Safety Switch

FIGURE 3 – DUCTING

90-945

6“ MIN

SUPPLY

AIRFLOW

HVAC UNIT

AIR CLEANERCOOLING COIL

6“ MIN

RETURN AIRFLOW

OPTIONAL N.C. VENT CONTROL DAMPER (SEE PAGES 10-11)

OPTIONAL OUTDOOR AIR INTAKE

N.C. BACKFLOW DAMPER

1700

3‘ MIN

WHOLE HOUSE INSTALLATION AND OPERATION (CONTINUED)

FIGURE 4 – WIRING

90-962

FIGURE 5 – SETTINGS

90-963

Standard Fan Cycling Ventilation

OFF OFF OFF

See pages 10-11 See pages 10-11 See pages 10-11

OFF OFF OFF OFF ON OFF

Standard Fan Cycling Ventilation

OFF See pages 10-11 See pages 10-11

ON See pages 10-11 See pages 10-11 OFF See pages 10-11 See pages 10-11 OFF See pages 10-11 See pages 10-11

Standard Fan Cycling Ventilation

OFF See pages 10-11 See pages 10-11

See page 10 for ventilation control wiring instructions. See page 10 for fan cycling wiring instructions. See page 12 for float switch wiring instructions.

N.C. BACKFLOW

DAMPER

THERMOSTAT HVAC EQUIPMENT

24 VAC

(10 VA min)

TRANSFORMER

DEHUMIDIFIER

CONTROL

VENT

DAMPERS

DEH B +A

Rf Y -WGhGs

HVAC EQUIP REMOTE

FLOAT

SENSORSWITCH

ODT

SYSTEM SETUP

OFF

MODEL 70

HVAC FAN

WHL HOUSE

VENT-AUTO

4321

MODEL 70 HVAC FAN

CONVERTIBLE VENT-TIMED

CYCLE PERIOD

1234

30 MIN. 1 HOUR 2 HOUR 3 HOUR

MIN.

MIN

OFF

MIN.

TEST

CYCLE TIME

+ 11 hidden pages