Aprilaire 1730A Manuel utilisateur

Model 1730A Compact Dehumidifier

Installation Instructions

SPECIFICATIONS

Dimensions: Width: 12.5” cabinet, 13” with doors

Height: 14.5” cabinet, 18.5” with leveling feet

fully extended

Length: 22” cabinet, 27” with collars

Weight: 65 lbs.

Capacity: 65 pints/day @ 150 cfm

AHAM DH-1-2003 80°F, 60% RH conditions

Efficiency: 1.8 Liters per kilowatt hour

AHAM DH-1-2003 80°F, 60% RH conditions

Power: 115VAC, 60 Hz, 7A Operating Current @ 80°F/ 60% RH

Unit equipped with 8 ft. grounded power cord

15 Amp circuit required

Airflow:

Inlet Air Operating Conditions: 60°F to 95°F, 30% RH to 99% RH

Installation Conditions: 40°F to 140°F, 0% RH to 99% RH

Evaporator Frost Sensor: 25°F +/- 5°F, circuit opens (cut-out)

55°F +/- 5°F, reset temperature (cut-in)

Filter: MERV 8, washable

WARNING

1. 120 volts may cause serious injury from electric shock. Disconnect electrical power

before starting installation. Leave power disconnected until installation is complete.

2. Sharp edges may cause serious injury from cuts. Use care when cutting plenum

openings and handling ductwork.

3. Dropping may cause personal injury or equipment damage. Handle with care.

4. Do not remove the outlet screen. The screen is required to protect from moving parts

and electrical components.

CAUTION

1. Do not use in pool applications.

2. If unit has been shipped or stored on

its side, wait 24 hours before running.

3. Do not use solvents or cleaners on

or near the display or circuit board.

Chemicals can damage components.

P ("w.c.) Airflow (cfm)

0.0 230

0.2 220

0.4 190

UNPACKING AND CONTENTS

Do not tip unit to remove from carton.

1. Open carton completely using cut line shown along bottom

perimeter of carton.

2. Remove all cardboard inner pack (top edges and duct collars).

3. See Figure 1 for opening view and contents.

a. Installation Manual

b. Owner’s Manual

c. Model 76 Control

d. Outlet Collar with Back Flow Damper

e. 8 ft. Grounded Power Cord

f. Wiring Access Panel

g. Condensate Pan

FIGURE 1 – Carton Opening & Contents

90-1654

2-1/8" CLEARANCE

FOR LEVELING FEETVIBRATION ISOLATORS

FILTER ACCESS DOOR

OUTLET INLET

5-1/8"

FIGURE 3 – Suspended Installation

If hanging the unit, use 1/4” (minimum) threaded rod and two unistruts

to support the base just inside the leveling feet. It is recommended

that vibration isolators be placed between the unistruts and

dehumidifier base. See Figure 3. Do not position threaded rods over

filter access doors. There must be a minimum clearance of 12” on one

side of the unit to allow for removal of the filter.

SUSPENDED INSTALLATION

90-1427

MOUNT CONTROL

•Inanareathehomeownerwantstomonitorandcontrol

moisture levels.

•Onaninteriorwall.

•Approximately5’offthefloor.

•Atleast18”fromanoutsidewall.

DO NOT MOUNT CONTROL

• Intheflowofasupplyregister.

•Behinddoors,incornersorotherdeadairspaces.

•Indirectsunlight,nearlightingfixtures,orotherappliancesthat

give off heat.

•Onanoutsideorunconditionedareawall.

•Instairwellsornearoutsidedoors.

•Onawallwithconcealedpipesorductwork.

FIGURE 4 – Mounting Control

90-1640

DEHUMIDIFIER CONTROL LOCATION

LOCATION CONSIDERATIONS

1. Install Unit Indoors: Do not expose to elements.

2. Drain Accessibility: If a drain is not located in the

installation area, a condensate pump may be required.

3. Power: Outlet within 8 feet of unit.

4. Filter Access: Allow for 12” clearance on one side of

the unit for removal of filter. (Figure 2)

5. Inlet: If inlet is not ducted, a minimum of 6” of open

space is required from the inlet panel to an adjacent

surface.

TOP VIEW

FILTER 12" MINIMUM CLEARANCE

FOR FILTER

(EITHER SIDE)

6" MINIMUM CLEARANCE

FOR PROPER AIR FLOW

90-1426

FIGURE 2 – Filter

Access Clearance

MECHANICAL INSTALLATION

The dehumidifier can be installed as shipped, with the supply collar

on the outlet panel, or if space is restricted, the supply collar can be

relocated to the top of the unit.

TOP MOUNT SUPPLY COLLAR (FIGURE 5)

1. Remove the four screws securing the supply collar (with backflow

damper) and screen to the outlet panel.

2. Remove the four screws securing the top mounted outlet cover plate.

3. Attach screen and supply collar with damper to the top of the unit.

4. Attach outlet cover plate to the outlet panel.

SUPPLY COLLAR FIGURE 5 – Top Mount Supply Collar

90-1655

Supply collar

mounted to

top of unit

Outlet cover

plate moved to

outlet panel

OUTLET VIEW

MOUNT CONTROL

PULL APART

FRONT COVER

BACKING

PLATE

R/+

FIGURE 6 – Disassemble Control

90-1631

BACKING PLATE

ANCHOR

SCREW

R/+

FIGURE 7 – Mount Backing Plate

90-1632

Required Components

18 – 24 gauge wire (field supplied) – 4 wires required, run new cable as needed.

(2) #8 x 1-1/2” mounting screws (supplied)

(2) Anchors (supplied)

1. Level the backing plate on the wall and mark the mounting holes and wire access location on the wall.

2. Drill two 3/16” mounting holes and a 3/4” wire access hole. See Figure 7.

3. Install the drywall anchors flush with the wall surface. Note: Mounting holes on the backing plate are designed to fit on a horizontal J-box.

4. Run a 4-wire cable from the dehumidifier to the wall mount location and through the square hole in the backing plate.

5. Secure the backing plate to the wall using the two #8 x 1-1/2” screws.

6. Connect wires to the C/-, R/+, and both DH terminals on the backing plate. Important: Note wire colors used for each terminal and match

with connections at the dehumidifier (see WIRING on page 6).

7. Push excess cable into the wire access hole and fill the hole with insulation. Note: Failure to seal the hole can cause drafts to enter the

control and affect sensing accuracy.

Run vinyl or pvc tubing from the 3/4” drain outlet on the dehumidifier inlet to a floor drain. Make sure the drain line has a constant downward

slope and is not kinked. Refer to local codes to determine if a p-trap is required. In attic installations the supplied condensate pan with a field

supplied float switch is required. See Condensate Pan and Float Switch section for installation and wiring instructions.

DRAIN

The feet can be adjusted to level the unit and/or to accommodate

a p-trap. Leveling is required to ensure proper drainage from the

dehumidifier. See Figure 8.

LEVELING

7/8" MINIMUM

4" MAXIMUM

FIGURE 8 – Leveling

90-1498

If the dehumidifier is installed in an attic or an area requiring leak protection, the unit must be placed the supplied condensate pan with a field

supplied normally closed condensate overflow safety switch (float switch). The float switch should be wired to the FLOAT SWITCH terminals on

the circuit board on the outlet panel. The compressor is disabled when the float switch is open.

CONDENSATE PAN AND FLOAT SWITCH

FLOAT SWITCH

(FIELD SUPPLIED)

MODEL 4911

CONDENSATE PAN

2" MIN.

LEVELING FEET (4)

MODEL 1730A

DEHUMIDIFIER

WIRING ACCESS

FIGURE 9 – Install Dehumidifier

in Condensate Pan

90-1656

TO FLOAT SWITCH

FLOAT SWITCH

REMOTE

G-STAT

R-HVAC

G-HVAC

FIGURE 10 – Wiring Float Switch

to Dehumidifier Control Board

90-1475

FLOAT SWITCH INSTALLATION AND WIRING

1. Install a float switch (field supplied) on any side of the condensate

pan. Refer to the instructions provided with the float switch for

proper installation.

2. The wires from the float switch are to be routed through the wiring

access panel in the back of the dehumidifier (see Figure 9).

Remove the wiring access panel and pull the FLOAT SWITCH

terminal block off the circuit board. Remove the float switch jumper

wire and wire the float switch to the FLOAT SWITCH terminals.

Plug the terminal block back into the circuit board (see Figure 10).

CONDENSATE PAN INSTALLATION

1. Raise the unit so that the bottom of the dehumidifier drain tube is

at least 2” off the floor (see Figure 9) and so that the dehumidifier

is level front to back and side to side.

2. Install the dehumidifier so that all four sides of the dehumidifier

and the drain tube are inside the condensate pan (see Figure 9).

DUCTWORK INSTALLATION

The dehumidifier is supplied with two 8” round collars. An integral backflow damper is installed in the outlet collar. In a ducted installation,

the dehumidifier pulls air from the living space or HVAC return duct and supplies the dehumidified air to the HVAC supply duct.

DUCTED INSTALLATION

• Movesupplycollartothedesiredlocation,ifnecessary.(SeeSupply Collar in MECHANICAL INSTALLATION section.)

• Usetheleastamountofductworkpossible.Toensurebestperformance,donotexceedatotalof50feetofductinstalledinaccordancewith

SMACNA Standards. UL approved, 8” diameter, insulated duct is recommended for all connections.

• Alljointsandseamsmustbesealed.

ATTIC INSTALLATIONS

CONDENSATE PAN

8" DIA. INSULATED DUCT

BOTH SIDES

FILTER

AIR HANDLER

6" MIN.

6 FT. MIN.

PLENUM BOX OR Y-FITTING

FIGURE 11 – Preferred Attic Installation

90-1618-2

8" DIA. INSULATED DUCT

BOTH SIDES

CONDENSATE PAN

FILTER

24"

MIN.

PLENUM BOX

6" MIN. 6" MIN.

0.4" w.c. MAX.

PLENUM

AIR HANDLER

FIGURE 12 – Alternate Attic Installation

90-1618-4

The Preferred Installation ensures warm, dehumidified air is thoroughly mixed with HVAC system air before being discharged into the living

space. If adequate space exists between the supply plenum and the first branch, allowing for proper mixing with the HVAC system air, the

dehumidifier discharge may be ducted to the supply side. The Alternate Installation minimizes re-evaporation of moisture off the cooling coil.

Attic installations require the dehumidifier to be installed in the supplied condensate pan with a field supplied float switch. Vibration isolators

placed under the dehumidifier feet are recommended when the dehumidifier is installed on ceiling joists.

CLOSET INSTALLATION

HVAC / FURNACE

DEHUMIDIFIED AIR IS

SUPPLIED DOWNSTREAM

FROM A-COIL TO MINIMIZE

EVAPORATION OFF A-COIL

2 FT INSULATED

FLEX DUCT ON INLET

TO REDUCE NOISE

DEHUMIDIFIER

FIGURE 13

90-1618-7

HVAC / FURNACE

DEHUMIDIFIER

DEHUMIDIFIED AIR IS

SUPPLIED DOWNSTREAM

FROM A-COIL TO MINIMIZE

EVAPORATION OFF A-COIL

AIR IS PULLED

FROM RETURN

DUCT

FIGURE 14

90-1618-6

BASEMENT INSTALLATION

CAUTION

Ensure return grill in door is not obstructed so dehumidifier

does not pull from HVAC system.

STAND ALONE INSTALLATIONS

DEHUMIDIFIER

AIR IS PULLED FROM

INSTALLED SPACE

DEHUMIDIFIED AIR

IS SUPPLIED TO

INSTALLED SPACE

FIGURE 15 – Stand Alone, Non-Ducted

90-1423

LIVING

SPACE

DEHUMIDIFIER

FIGURE 16 – Stand Alone, Ducted

90-1423

In a free standing installation, the dehumidifier pulls air from the installed space and returns the dehumidified air back to that space. See Figure 15.

•Placeunitinareawithdrainaccessandwithin8’ofanoutlet.

•Unitcanalsobeductedtopullandreturntoasinglelivingspace.SeeFigure 16.

WIRING

Required Components

18-24 gauge, 3-wire stranded cable

1. Disconnect power to the dehumidifier and HVAC system.

2. Remove the wiring access panel on the dehumidifier outlet panel.

3. Run a 3-wire cable from the dehumidifier to the furnace/air

handler.

4. At the HVAC equipment, disconnect the thermostat wire from the

Gterminal. Wire nut this wire to one of the wires (G-STAT) from

the 3-wire cable. Connect the remaining two wires to the HVAC R

terminal (R-HVAC) and the HVAC Gterminal (G-HVAC).

5. Unplug the G-STAT, R-HVAC, and G-HVAC terminal block from

the circuit board. Make the connections shown in Figure 17.

6. Plug the terminal block back into the circuit board.

7. Unplug the REMOTE terminal block from the circuit board.

Connect the DH wires from the Model 76 to the REMOTE

terminals as shown in Figure 17.

DUCTED INSTALLATIONS WITH A FLOAT SWITCH (ATTIC, CLOSET, ETC.)

8. Plug the terminal block back into the circuit board.

9. Pull the Dehumidistat C and Dehumidistat R wires out of the

wiring access panel and remove the wire nuts.

10. Using the wire nuts, make the final two connections with the

4-wire cable to C/- and R/+ as shown in Figure 17.

11. Remove the FLOAT SWITCH terminal block from the circuit

board. Make the connections shown in Figure 17.

12. Replace the wiring access panel on the unit.

13. Snap the Model 76 front cover on the backing plate. The 6-pin

terminal aligns with the terminal block receptacle on the backing

plate.

14. Proceed to SYSTEM CHECKOUT on page 9.

HVAC EQUIPMENTTHERMOSTAT

MODEL 76 CONTROL

FLOAT

SWITCH

DEHUMIDISTAT R

DEHUMIDISTAT C

R/+

C/-

FIGURE 17

90-1646

Required Components

18-24 gauge, 3-wire stranded cable

1. Disconnect power to the dehumidifier and HVAC system.

2. Remove the wiring access panel on the dehumidifier outlet panel.

3. Run a 3-wire cable from the dehumidifier to the furnace/air

handler.

4. At the HVAC equipment, disconnect the thermostat wire from the

Gterminal. Wire nut this wire to one of the wires (G-STAT) from

the 3-wire cable. Connect the remaining two wires to the HVAC R

terminal (R-HVAC) and the HVAC Gterminal (G-HVAC).

5. Unplug the G-STAT, R-HVAC, and G-HVAC terminal block from

the circuit board. Make the connections shown in Figure 18.

6. Plug the terminal block back into the circuit board.

INSTALLATIONS WITHOUT A FLOAT SWITCH (BASEMENT, ETC.)

THERMOSTAT HVAC EQUIPMENT

MODEL 76 CONTROL

DEHUMIDISTAT R

DEHUMIDISTAT C

R/+

C/-

FIGURE 18

90-1646

7. Unplug the REMOTE terminal block from the circuit board.

Connect the DH wires from the Model 76 to the REMOTE

terminals as shown in Figure 18.

8. Plug the terminal block back into the circuit board.

9. Pull the Dehumidistat C and Dehumidistat R wires out of the

wiring access panel and remove the wire nuts.

10. Using the wire nuts, make the final two connections with the

4-wire cable to C/- and R/+ as shown in Figure 18.

11. Replace the wiring access panel on the unit.

12. Snap the Model 76 front cover on the backing plate. The 6-pin

terminal aligns with the terminal block receptacle on the backing

plate.

13. Proceed to SYSTEM CHECKOUT on page 9.

When the dehumidifier is not wired to the HVAC system, air is pulled through the unit, dehumidified, and circulated solely by the dehumidifier

blower. No additional components are required for this configuration. The 24 VAC wires to power the control off the dehumidifier transformer

are located inside the wiring access panel.

STAND ALONE INSTALLATIONS

FLOAT

SWITCH

MODEL 76 CONTROL

DEHUMIDISTAT R

DEHUMIDISTAT C

R/+

C/-

FIGURE 19

90-1646

Note: If float switch is not required,

keep the factory supplied jumper

installed in FLOAT SWITCH terminals.

1. Disconnect power to the dehumidifier.

2. Remove the wiring access panel on the dehumidifier outlet panel.

3. Unplug the REMOTE terminals from the circuit board. Connect

the DH wires from the Model 76 to the REMOTE terminals as

shown in Figure 19.

4. Plug the terminal block back into the circuit board.

5. Pull the Dehumidistat C and Dehumidistat R wires out of the

wiring access panel and remove the wire nuts.

6. Using the wire nuts, make the final two connections with the

4-wire cable to C/- and R/+ as shown in Figure 19.

7. Remove the FLOAT SWITCH terminal block from the circuit

board. Make the connections shown in Figure 19.

8. Replace the wiring access panel on the unit.

9. Snap the Model 76 front cover on the backing plate. The 6-pin

terminal aligns with the terminal block receptacle on the backing

plate.

10. Proceed to SYSTEM CHECKOUT on page 9.

SYSTEM CHECKOUT

POWER UP

1. Check all wiring and restore power to the

HVAC equipment.

2. Plug in the dehumidifier and turn on/off

switch ON.

 •CheckLEDindicatorslocatedbelow

the wiring access panel (see below).

Verify the green POWER LED is on.

The green LED is on when power is

applied to the system.

 •Model76Control:Aftera4second

start up sequence all buttons on the

Model 76 will be functional.

– The control will display the

measured humidity.

FIGURE 20

90-1636

Model 76 Control

Model 76 LCD Display

Blinking ON +*: Control Limit Exceeded.

See Control Limits, page 10.

Solid ON:

Control On

Blinking ON:

Dehumidifying

Measured

Humidity or

Setting

Control On/Off

Humidity Setting

and Offset

Adjustment

Control must be

ON to adjust offset

and setting.

SET: Shows when

humidity setting

displayed or being

changed.

OFF: Control Off

TEST MODE

1. Press and hold the ON button for 5 seconds to enter Test Mode.

a. Verify the measured humidity is displayed on the screen.

b. Verify the dehumidifier turns on and ON blinks on the screen.

c. If wired to the HVAC system, verify the HVAC fan turns on.

d. After 3 minutes, if still in TEST MODE, the compressor will turn on.

e. Check LED indicators. The green POWER LED will remain on. If the red FAULT LED is on, refer to the TROUBLESHOOTING GUIDE.

The red LED turns on when a fault condition is active.

2. After 5 minutes or after pressing the OFF button, the control will enter Off mode.

a. Verify the dehumidifier turns off.

b. If wired to the HVAC system, verify the HVAC fan turns off.

HUMIDITY SETTING

• ThecontrolmustbeONtoadjustthehumiditysetting.

• The (up) and (down) buttons are used to increase or decrease the humidity setting.

• ThefirstpressofeitherbuttonwilldisplaythecurrentsettingontheLCDdisplayandSETwillbedisplayedbelowthe%sign.

• Eachsubsequentpushoftheupordownbuttonswillchangethesettingby1%.

• Ifabuttonishelddown,thesettingwillcontinuallychangeby1%foraslongasthebuttonispressed.

• ThecontrolwillreturntoNormalMode,displayingthemeasuredhumidity,5secondsafterthelastbuttonpress/release.

LED indicators

90-1656

SEQUENCE OF OPERATION

The Model 76 Control continually measures the humidity of the space in which it is located and controls to the humidity setting.

Normal Mode

• Whenthemeasuredhumidityisgreaterthanthesetting,thecontrolwillactivatethedehumidifieroutput.

– Model 76: ON will blink on the display.

– Dehumidifier: The dehumidifier blower will turn on and the DEH FAN Amber LED on the circuit board (middle LED, not visible unless wiring

access panel is removed) will illuminate. The HVAC system blower, along with the HVAC FAN Amber LED (top LED, not visible unless wiring

access panel is removed) will turn on if the dehumidifier is wired to the HVAC system. Note: The HVAC FAN LED will turn on regardless

of wiring to the HVAC system. After three minutes of blower operation, the dehumidifier compressor will turn on along with the COMPR

Amber LED (bottom LED, not visible unless wiring access panel is removed).

• Whenthemeasuredhumidityfalls3%RHbelowthesetting,thecontrolwilldeactivatethedehumidifieroutput.

– Model 76: ON will stop blinking on the display.

– Dehumidifier: The compressor and dehumidifier blower will turn off. If wired to the HVAC system, the HVAC blower will also turn off unless

the system thermostat keeps it running. All Amber LEDs will turn off.

Control Limits

• Ifthecontrolmeasuresadew point below 40°F OR a temperature above 99°F, the control will deactivate the dehumidifier output if

actively dehumidifying, the dehumidifier will stop dehumidifying, and ON and *will blink on the display.

• Thecontrolwillresumenormaloperationwhenthemeasureddewpointisgreaterthan45°Forthemeasuredtemperatureisbelow94°F,

depending on which control limit was exceeded.

OFFSET

An offset can be applied to the humidity reading to avoid discrepancies with other humidity measuring

devices in the home. Allow 48 hours for the control to acclimate before applying an offset. The control

must be ON to enter the Offset screen.

• PressandholdtheOFFbuttonfor5secondstoentertheOffsetscreen.

• The buttons can be used to set an offset value between -5% RH and +5% RH.

• ThecontrolwillreturntoNormalMode,displayingthemeasuredhumidity,5secondsafterthelast

button press/release.

FIGURE 21 – Offset Screen

90-1638

TURNING ON AND SETTING CONTROL

1. Press the ON button.

2. Use the buttons to set the control at 59%.

Increasing the humidity setting will decrease dehumidifier run time, allowing for higher humidity levels.

Decreasing the humidity setting will increase dehumidifier run time, allowing for lower humidity levels.

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