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MODEl 76 REMOTE CONTROl fOR CRAWl SPACES

WIRING & DIP SWITCH CONfIGURATION

When used as a remote control, the Model 76 can be installed in any 
convenient location within the living space while the dehumidifier is 
installed in an inconvenient or difficult to access area that is going 
to be dehumidified, such as a crawl space, sealed attic, or basement 
(if getting to the basement is inconvenient or difficult for the owner) . 
The dryness level is set on the Model 76 control and communicated 
to the dehumidifier, which then dehumidifies the area to that setting . 
The dehumidifier communicates the measured humidity level (%RH) 
in the space where it is located to the Model 76 Control, where it 
is displayed . The dehumidifier can be turned on and off using the 
ON/OFF buttons of the Model 76 Control . Refer to the Model 76 
Installation Instructions for mounting and operating instructions . The 
dehumidifier control knob can only be used to initiate Test Mode 
when a Model 76 is connected .

fIGURE 30 – Model 76 Remote Control  

DIP Switch Configuration

90-1538

LOCAL

PRIMARY/SECONDARY

EXTERNAL

SYSTEM SETUP

HVAC FAN ON

VENT-TIMED

VENT-AUTO

PRIMARY

HVAC FAN OFF

ON

1234

MODEL

76

DAMPER

S

Rf

DH

-

W

Gh

Gs

Cf

VEN

T

HV

AC EQUIP

REMOTE

DE
HB

+

A

DEHUMIDIFIER

CONTROL BOARD

SENSO

R

OD
T

FLOA

T

SWITC

H

R/+

B

C/-

A

DH

DH

CRAWL SPACE

DEHUMIDIFIER

90-1537

90-1618-13

SEQUENCE Of OPERATION

•  Once during every Cycle Period (set on the dip switches in the dehumidifier) the dehumidifier blower and dehumidifier damper output will 

turn on and sample the air in the area served by the dehumidifier . Sampling will also occur whenever the dryness level setting is raised at the 
Model 76 Control . The green Status LED on the dehumidifier will flash during sampling .

•  After three minutes, the dew point of the air is measured and compared to the dryness level set on the Model 76 Control. If the dew point of 

the air is above the setting, the compressor turns on and ON will flash on the Model 76 Control . 

•  The dew point of the air is continuously monitored during compressor operation. When the dew point of the air falls below the setting, the 

dehumidifier compressor and blower will turn off and ON will stop flashing on the Model 76 Control .

fIGURE 29 – Model 76 Remote Control Wiring

fIGURE 28 – Crawl Space Installation

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Summary of Contents for 1750A

Page 1: ...disconnected until installation service is completed 3 Sharp edges may cause serious injury from cuts Use care when cutting plenum openings and handling ductwork 4 Dropping may cause personal injury o...

Page 2: ...SINGLE ZONE DUCTED TO HVAC SYSTEM see page 7 SINGLE ZONE NOT DUCTED TO HVAC SYSTEM see page 9 TWO ZONE PRIMARY AND SECONDARY ZONED see page 11 In a Single Zone Ducted to HVAC System installation the d...

Page 3: ...non condensing Filter MERV 8 washable Compressor Minimum Off Time 3 minutes Compressor Minimum On Time 3 minutes Airflow 1750A External Static Pressure Airflow 0 0 w c 380 CFM 0 4 w c 310 CFM 0 6 w c...

Page 4: ...6mm Minimum Clearance for Filter and Front Panel Removal 20 in 508mm Minimum Clearance for Filter Removal 6 in 152mm Minimum Clearance for Filter Removal Air Inlet 8 in Round Collar Service Access Pan...

Page 5: ...OUTLET 4 MIN BACKFLOW DAMPER CAUTION Only install damper on outlet Dehumidifier will not function if damper is installed on inlet GENERAL DUCTWORK RECOMMENDATIONS When ducted to the HVAC supply the ou...

Page 6: ...drip pan located below the coil CAUTION 1 Drain trap must be primed with water before use 2 A condensate pan with a float switch is required in attic installations High Side Low Side Drain Outlet Dra...

Page 7: ...ly Closed Float Switch Grille Model 76 Control Model 8910 Home Comfort Control Third Party Control Figure 9 Single Zone Ducted to HVAC System Basement Installation AIR IS PULLED FROM RETURN DUCT DEHUM...

Page 8: ...d to the supply side The Alternate Installation see Figure 12 minimizes re evaporation of moisture off the cooling coil Attic Installation Notes The dehumidifier must be installed in a secondary conde...

Page 9: ...n and the green Status LED switches to solid illumination If the dew point is below the setting the dehumidifier damper output turns off and the dehumidifier blower turns off along with the green Stat...

Page 10: ...14 Leave the LOCAL EXTERNAL switch in the LOCAL position if using the dehumidifier s onboard control If installing a separate control see MODEL 76 EXTERNAL CONTROL on page 19 MODEL 76 REMOTE CONTROL o...

Page 11: ...ary Zone Required Components Duct Work 18 22 AWG Wire Grilles 2 Aprilaire Model 6508 8 Normally Closed Damper 2 Aprilaire Model 6608 8 Normally Open Damper 24 VAC Transformer 40VA min for Dampers NOTE...

Page 12: ...hrough the unit dehumidified and circulated solely by the dehumidifier blower CYCLE PERIOD This determines how frequently the dehumidifier will sample the air to check the humidity level Set to 1 hour...

Page 13: ...n Status LED switches to solid illumination If the dew point is below the setting the dehumidifier damper output turns off and the green Status LED begins flashing as the dehumidifier begins Secondary...

Page 14: ...unction in Air Cycling mode activating the HVAC blower to cycle air through the home based on the Cycle Period and Cycle Time Required Components Aprilaire Model 6506 6 Normally Closed Damper 24 VAC T...

Page 15: ...QUIREMENTS See page 17 for outdoor temperature sensor installation 1 The MINIMUM ventilation requirement is calculated using ASHRAE 62 2 ASHRAE Airflow in CFM House Area in Sq Ft x 0 01 Number of Bedr...

Page 16: ...d a fully opened damper Rigid pipe values are based on 6 duct two 90 elbows and a fully open damper In both cases the air intake is through a metal vent hood with inlet screen Airflow may need to be a...

Page 17: ...requirement is met ventilation will not occur until the next cycle period SETTING DIP SWITCHES CYCLE TIME TO MEET VENTILATION REQUIREMENTS Figure 22 VENT TIMED DIP Switch Settings 90 1538 ON 1 2 3 4 4...

Page 18: ...s active The dew point of the air is measured 3 minutes after the dehumidifier blower is turned on and every 15 seconds while the blower is running If the dew point of the air is above the setting on...

Page 19: ...EM SETUP HVAC FAN ON VENT TIMED VENT AUTO PRIMARY HVAC FAN OFF ON 1 2 3 4 MODEL 76 DAMPERS Rf DH W Gh Gs Cf VENT HVAC EQUIP REMOTE DEH B A DEHUMIDIFIER CONTROL BOARD HVAC EQUIPMENT THERMOSTAT G R C G...

Page 20: ...90 1538 LOCAL PRIMARY SECONDARY EXTERNAL SYSTEM SETUP HVAC FAN ON VENT TIMED VENT AUTO PRIMARY HVAC FAN OFF ON 1 2 3 4 MODEL 76 DAMPERS Rf DH W Gh Gs Cf VENT HVAC EQUIP REMOTE DEH B A DEHUMIDIFIER CO...

Page 21: ...Rf DAMPERS C R RC RH HC W W2 W3 Y Y2 Y3 C L G DH VENT EAC DH DH HUM HP B W2 W G O Y2 Y nc com no EQ DEHUMIDIFIER CONTROL BOARD HVAC EQUIPMENT MODEL 8910 HOME COMFORT CONTROL EQUIPMENT CONTROL MODULE...

Page 22: ...structions for the Model 76 Control Model 8910 Home Comfort Control or Third Party Control for setting adjustments Figure 33 Control Knob Setpoint 90 1327 EXAMPLE At an indoor temperature of 75 F and...

Page 23: ...rd Turn the dehumidifier back on and increase the dryness level setting on the Model 76 If the dehumidifier turns on the problem is with the wiring between the dehumidifier and control 3 If the dehumi...

Page 24: ...tage across the R C terminals on the dehumidifier control board Voltage should be 18 VAC 30 VAC Incorrect wiring Verify wiring and connections between the thermostat HVAC and dehumidifier HVAC fan ope...

Page 25: ...ly included with Model 1710A only 1 4863 12 LED Control Door 1 4864 No Part Description Qty Ctn Part No 13 10 VA Transformer 1 5262 14A Capacitor 60MF 1770A 1 5255 14B Capacitor 55MF 1710A 1750A 1 492...

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Page 28: ...P O Box 1467 Madison WI 53701 1467 Phone 800 334 6011 Fax 608 257 4357 www aprilairepartners com 10009845 5 12 B2205733B Printed in U S A 2012 Aprilaire A division of Research Products Corporation...

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