DEH 3000 DEH 3000 - Therma
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1. air conditioner is running A voltmeter is required for the next steps to ensure the correct wiring from the A C transformer is used to set up the Lock out dehumidifier function 1 The common wire from the existing A C transformer usually Black must be attached to the Yellow wire from the Ultra Aire dehumidifier TIP The common wire can be identified as the wire from the A C transformer that reads 0 volts between it and the Yellow air conditioning call for cooling wire The incorrect wire will give a 20 to 28 volt reading 2 Another Yellow wire must be added to the thermostat Yellow terminal and run to the ON DET sensor terminal on the DEH 3000 DEHUMIDIFIER DEH 3000 Dehumidifier amp Ventilation System Controller Installation Operation amp Service Manual 2 5 Testing Verify the wiring connections A WARNING ONLY CONNECT THE WHITE WIRE TO THE CONTROL IF IT IS WIRED IN A CIRCUIT THROUGH AN ELECTRIC DAMPER OTHERWISE TRANSFORMER DAMAGE MAY RESULT After checking the wiring this short test will confirm proper hook up 1 Install front cover of the DEH 3000 connect the top first then the bottom 2 Plug in the Ultra Aire dehumidifier The DEH 3000 should power up 3 Turn the DEH 3000 ON by pressing the ON OFF button 4 Verify dehumidification operation by adjusting the RH SETPOINT to below the RH reading on the display Use the down RH button Confirm Ultra Aire fan and2. change the time 2 Press the PROGRAM ENTER button to switch to the OPEN FOR setting Using the up down RH buttons change the duration that the damper will ventilate fresh air 3 Press the PROGRAM ENTER button to switch to the CLOSED FOR setting Using the up down RH buttons change the duration that the damper will remain closed between ventilation cycles For the example given starting at 8 00AM in the morning the control will ventilate fresh air for 15 minutes then stop for 15 minutes This schedule of 15 minutes open 15 minutes closed will continue until the start time of the night schedule Morning schedule is available anytime from 12 00AM until 11 59AM Night schedule is available anytime from 12 00PM until 11 59PM 4 Press PROGRAM ENTER again to go to the MON FRI night schedule Repeat the steps listed above for this and the SAT SUN day and night schedules When you have finished programming your schedule either the 7 day version or the weekday weekend split version use the down RH button to highlight the EXIT option and then press PROGRAM ENTER to select it Running the Ventilation Program Press and hold the PROGRAM ENTER button until the PROGRAM screen appears Use the down RH button to highlight RUN PROGRAM PROGRAM HOLD RUN PROGRAM PROGRAM TEMP CUTOUT ERIT Then press PROGRAM ENTER to select it The
3. compressor operation Both should be ON now Increase the RH SETPOINT on the display to well above the RH reading on the display Press the RH up arrow to increase the RH SETPOINT After running the dehumidifier compressor the DEH 3000 applies a 10 minute restart lockout on all functions You will have to wait for the restart lockout to expire 5 Verify FAN only operation a Check the WENT mode on the display it will either be CLOSED or OPEN If it is CLOSED go to the next step If it is OPEN press and hold the WENT key until OPEN flashes on the display release the key and then press it one more time OPEN will change to CLOSED Don t touch the keys for several seconds until it stops flashing b Press and hold the FAN button until AUTO begins flashing on the display release it and then press it again to switch the fan to the ON setting c Confirm that the Ultra Aire fan is ON Ultra Aire compressor must be OFF Ventilation damper if used should be CLOSED 6 Verify optional VENT operation if electric damper is installed a Press and hold the FAN button until ON flashes on the display b Release the FAN button then press it again to switch fan operation to AUTO c Press and hold the WENT button until CLOSED flashes on the display d Release the WENT button then press it again
4. display will appear as follows 12 80AM MONDAY 30 73 SETPOINT 50 o DENT 15 15 o FAN AUTO RUN Vent schedule Program on time off time RUN mode 4 0 Temperature Cutout Programming Dehumidifiers produce heat when dehumidifying and depending upon outside conditions the ventilation function may also introduce warm air Some conditions may introduce enough heat to drive household temperatures up The DEH 3000 temperature cutout feature disables all Ultra Aire operations if household temperatures reach the cutout setpoint In most installations this feature will not need to be used the cutout is factory set to 99 F If a lower temperature cutout is desired program the setpoint by pressing and holding the PROGRAM ENTER button until the PROGRAM screen appears Press the up down RH buttons until TEMP CUTOUT highlighted Then press the PROGRAM ENTER button again to select it Now use the RH up or RH down buttons to adjust the setpoint Press PROGRAM ENTER to return to the home screen DEH 3000 Dehumidifier amp Ventilation System Controller Installation Operation amp Service Manual AY U ltra Ai re Dehumidifier amp Ventilation System Controller DEH 3000 WARRANTOR Therma Stor LLC PO Box 8680 Madison WI 53708 Telephone 1 800 533 7533 WHO IS COVERED This warranty extends only to the original residential end user of the DEH 3000 Dehumidifier amp Vent
5. 2 Run the Yellow wire from the A C unit to the COM terminal on the DEH 3000 Energize the A C central fan during dehumidification To automatically run the A C FAN when the dehumidifier runs 1 Attach a second Green wire to the Green fan wire terminal on the thermostat 2 Connect the new Green wire to the COM terminal on the DEH 3000 3 Run a wire from the Red terminal on the thermostat to the NO Normally Open terminal on the DEH 3000 2 4 Dehumidifier lock OFF or lock ON A C sensor feature To automatically activate or deactivate the dehumidifier when the air conditioner runs 24 VAC Yellow wire from dehumidifier Activate dehumidification when the air conditioner is running A voltmeter is required for the next steps to ensure the correct wiring from the A C transformer is used to set up the Lock in dehumidifier function 1 The common wire from the existing A C transformer usually Black must be attached to the Yellow wire from the Ultra Aire dehumidifier TIP The common wire can be identified as the wire from the A C transformer that reads 0 volts between it and the Yellow air conditioning call for cooling wire The incorrect wire will give a 20 to 28 volt reading 2 Another Yellow wire must be added to the thermostat Yellow terminal and run to the OFF DET sensor terminal on the DEH 3000 DEHUMIDIFIER AIR CONDITIONER TRANSFORMER TO A C Deactivate dehumidification when the
6. 3 8 Damper Operation and Ventilation Manual Hold MOE sessies 8 3 9 Damper Operation and Ventilation Programmed Ventilation cececececeeceseseeeeteeeseeneees 8 4 0 Temperature Cutout Programming ccceeeeee 9 WAIANLY E E A eaves 10 Read and Save These Instructions WARNING This symbol means important instructions Failure to heed them can result in serious injury or death 1 Specifications Part P N 4028539 Model DEH 3000 Operating Voltage 24 VAC Max Current DMP COMP FAN 1 AMP each Humidity Range Accuracy 10 95 RH 5 Auxillary Relay Capacity 5 Amps 24VAC Temp Range Accuracy 30 90 F 2 Size 4 95 L x 1 06 W x 4 19 H 2 Installation Install the DEH 3000 control panel in a central area of the structure where it will sense the relative humidity of the structure accurately Do not install the control panel where it may not accurately sense the relative humidity such as near HVAC supply registers near exterior doors and windows or near a pool or spa Install in accordance with all applicable codes and standards 2 1 Install Instructions 1 Separate the front panel from the back panel by depressing the middle sections of the top and bottom of the front panel 2 Locate the wiring access hole in the wall or other flat mounting surface Place the back panel into position and drill the appropriate mounting holes 3 Insert the screws and tighten Level as nece
7. INSTALLER S amp OWNER S MANUAL HVAC INSTALLER PLEASE LEAVE MANUAL FOR HOMEOWNER wi Ultra Aire DEH 3000 Bees s g D OOOO CED Part No 4028539 Dehumidifier amp Ventilation System Controller A Therma Stor uc Driven by performance Powered by design P O Box 8680 Madison WI 53708 e TOLL FREE 1 800 533 7533 e www thermastor com sales thermastor com 2008 Therma Stor LLC Manual P N TS 499b Table of Contents 1 Contents amp Specifications 0 0 0 0 cecceessecsseseeseeseeeeees 2 Ae MSTA ATOM ccd sfecaenSvacdacsciseveshesinitade Sdevaiesees taaasasatannevedveacd 2 2 1 Install Instructions ccccceeeeseseceseeecseeecsecseeseeaeens 2 22 WINNG ana eden cnet 3 2 3 Auxiliary Relay A C Lockout or Run Central Fan 3 2 4 Dehumidifier Activate De Activate with A C Unit 4 Z ESUN essex hetshavecate e a 5 2 6 TrOUDIESNOOTING seccececeeesesceeeeeseeeseeetsnseeeestetaees 5 3 Operaatio N aein es efoessessidseecdeces est sdl Ge sevszet cadet imesh 5 De MIDIS DIA Ven a 6 Si Z SENIN sssscdyesasissdsdveiestee E 6 3 3 Personal Settings reference cccccceeeseeeeeeeeees 6 3 4 On Off and Display iteMS ccesesessssssseeeeseeeeees 6 3 5 Setting ClOCK Time cecececescseeseseeeeeeeeseseeeestetsees 6 3 6 Adjusting the Relative Humidity Setpoint 6 3 7 Fan Setting amp Operation cccceeeeeeseeseeeeeeetees 7
8. Morning is the first 12 hours of the day and night is the second 12 hours Each schedule has e A START time when the ventilation schedule begins e An OPEN FOR duration for the amount of time the damper stays open in 5 minute intervals from 0 to 60 e And CLOSED FOR duration which closes the damper for a specified time in 5 minute intervals from 0 to 60 Setting the Ventilation Program 1 Press the PROGRAM ENTER button until the following menu appears PROGRAM HOLD RUN PROGRAM PROGRAM TEMP CUTOUT EXIT 2 Using the up down RH buttons highlight PROGRAM and select it by pressing the PROGRAM ENTER button The following menu appears DEH 3000 Dehumidifier amp Ventilation System Controller Installation Operation amp Service Manual PROGRAM MON FRI SAT SUN MON SUN ERIT You can select from MON FRI SAT SUN for separate weekday and weekend schedules or MON SUN which gives you equal weekday and weekend schedules 3 Using the Up Down RH buttons highlight and then select one of the two choices The example given shows how to program separate weekday and weekend schedules The same method is used if you choose the other program Example menu when you select MON FRI SAT SUN PROGRAM MON FRI DAY START DENT OPEN FOR 15 CLOSED FOR 15 8 00AM 1 Enter the starting time for weekdays using the up down RH buttons to
9. Y CONNECT THE WHITE WIRE TO THE CONTROL IF IT IS WIRED IN A CIRCUIT THROUGH AN ELECTRIC DAMPER OTHERWISE TRANSFORMER DAMAGE MAY RESULT The White wire controls the optional motorized damper that can be installed into a fresh air duct This damper provides the ability to control fresh air ventilation using the ventilation timer function of the DEH 3000 and the terminal labeled DMP on the DEH 3000 See Section 3 8 Leave the DMP terminal unused if a motorized damper is not used and cap off the White wire from the Ultra Aire dehumidifier Standard wire colors for thermostats are as follows Description Color Terminal code 24VAC Red R Call for Heat White W or W1 Force Fan On Green G Compressor Call for Cooling Yellow YorY1 2 3 Auxiliary relay operation It may be desirable to coordinate fan operation of the central heating cooling system with dehumidifier operation The DEH tee CONS The relay terminals labeled NC COM and NO operate according to the following chart DEHUMIDIFIER COM to NO COM to NC ON CONNECTED OPEN OFF OPEN CONNECTED Common uses assuming standard thermostat wiring colors as noted Lock out the A C during dehumidification This will turn off the A C whenever the dehumidifier runs 1 Wire the Yellow thermostat terminal to the NC terminal on the DEH 3000 DEH 3000 Dehumidifier amp Ventilation System Controller Installation Operation amp Service Manual
10. damper and the dehumidifier fan according to the programmed ventilation schedule Section 3 9 The factory preset for the WENT setting is CLOSED To set OPEN hold or CLOSED hold ventilation operation 1 Press the WENT button The current setting will begin to flash on the display Release the button 2 Press the WENT button again to switch between OPEN and CLOSED 3 Leave the control alone for 10 seconds and your settings will be saved 12 00AM MONDAY 90 13 SETPOINT 50 VENT OPEN DENT FAN AUTO HOLD FAN 12 00AM MONDAY 50 15 SETPOINT 50 CLOSED AUTO HOLD 3 9 Damper Operation and Ventilation Programmed Ventilation This example shows the system in program mode denoted by the schedule 15 minutes on 5 minutes off and the word RUN in the lower right corner of the display 12 80AM MONDAY 30 3 SETPOINT 50 o DENT 15 05 L FAN AUTO RUN The status of the damper is show here O is open blank is closed The DEH 3000 will operate fresh air ventilation according to your ventilation program The control needs to be programmed to turn the ventilation function ON and OFF at the desired intervals This is done by programming the ventilation timer There are two programs available for ventilation 1 Monday through Sunday 2 Monday through Friday amp Saturday Sunday Each block of days has a morning schedule and a night schedule
11. e DEH 3000 Dehumidifier amp Ventilation System Controller 10 Installation Operation amp Service Manual Therma Stor uc Driven by performance Powered by design PO Box 8680 Madison WI 53708 Phone 608 222 5301 Fax 608 222 1447 www thermastor com sales thermastor com Information in this document is subject to change without notice No part of this document may be reproduced or transmitted in any form or by any means electronic or mechanical for any purpose without the express written permission of Therma Stor LLC 2007 Therma Stor LLC All rights reserved DEH 3000 Dehumidifier amp Ventilation System Controller Installation Operation amp Service Manual
12. functions of the system The fan will remain OFF unless the system is dehumidifying or ventilating The fan always runs during dehumidification and ventilation and the fan 0 icon will be lit To completely turn the system OFF use the ON OFF button as described earlier DEH 3000 Dehumidifier amp Ventilation System Controller Installation Operation amp Service Manual 3 8 Damper Operation and Ventilation Manual Hold Mode The WENT setting controls the ventilation function of the system It has no control over the dehumidification function In order to provide ventilation the motorized damper must be open and the fan must be running The controller takes care of these two functions automatically so that whenever the damper is open the fan is running The ventilation indicator O will be displayed whenever the unit is ventilating The fan operation indicator 0 will also be lit There are three damper operation modes 1 OPEN hold mode The damper will be open and the dehumidifier fan will be continuously operating to introduce fresh air into the space Use this mode for continuous fresh air ventilation The fan is always on when the damper is open 2 CLOSED hold mode The damper will never open and the dehumidifier will not ventilate The fan will still operate normally for recirculation and dehumidification 3 PROGRAMMED mode The DEH 3000 will operate the motorized
13. ilation System Controller and may not be assigned or transferred FIRST YEAR WARRANTY Therma Stor LLC warrants that for one 1 year the DEH 3000 Dehumidifier amp Ventilation System Controller will operate free from any defects in materials and workmanship or Therma Stor LLC will at its option repair or replace the defective part s free of any charge END USER RESPONSIBILITIES Warranty service must be performed by a Servicer authorized by Therma Stor LLC If the end user is unable to locate or obtain warranty service from an authorized Servicer he should call Therma Stor LLC at the above number and ask for the Therma Stor LLC Service Department which will then arrange for covered warranty service Warranty service will be performed during normal working hours The End user must present proof of purchase lease upon request by use of the warranty card or other reasonable and reliable means The end user is responsible for normal care This warranty only applies to residential applications and does not cover any defect malfunction etc resulting from misuse abuse lack of normal care corrosion freezing tampering modification unauthorized or improper repair or installation accident acts of nature or any other cause beyond Therma Stor LLC s reasonable control LIMITATIONS AND EXCLUSIONS If any DEH 3000 Dehumidifier amp Ventilation System Controller part is repaired or replaced the new part shall be warranted for
14. isplayed 3 7 Fan Setting and Operation Use the FAN button to change the fan operation There are 2 choices for fan operation ON or AUTO The factory preset is AUTO ON The fan in the Ultra Aire dehumidifier will run continuously This does not affect either the dehumidification or ventilation functions of the system The system may or may not be ventilating or dehumidifying while the fan is running This setting is commonly used for maximum air filtration and or air recirculation AUTO Indicates the fan will run when the DEH 3000 calls for dehumidification or ventilation If the control has not called for dehumidification for 3 hours the control will automatically run the dehumidifier fan for 10 minutes After a dehumidification cycle the fan automatically shuts off for 10 minutes This pause allows the water to drain from the dehumidifier A solid 0 indicates the fan is operating A flashing 0 indicates the fan is in a wait mode No 0 indicates the fan is OFF To set the operation 1 Press and hold the FAN button The current fan setting will begin to flash on the display Release the button 2 Press the FAN button to toggle between the ON and AUTO modes 12 00AM_MONDAY 30 13 SETPOINT 50 DENT CLOSED o FAN AUTO HOLD Fan Mode AUTO ON With the fan in the AUTO mode the fan will operate only when needed by other
15. l remember any changes made and return to the normal display screen allowing you to proceed to the next step 3 3 Personal Settings reference list Please record your settings here Function Factory setting My Setting SETPOINT RH 50 VENT Closed FAN Auto TEMP CUTOUT 99 3 4 On Off and display items Press the ON OFF button to turn the system ON or OFF When the system is ON the setpoint fan status operation mode RUN or HOLD and fresh air vent status is displayed DEH 3000 Switched ON 12 80AM MONDAY 5 leu Fi g O SETPOINT 50 o DENT CLOSED o FAN AUTO HOLD When the system is OFF the control will display the time day RH and temperature When the unit is shipped it is in manual hold mode DEH 3000 Switched OFF 12 88AM MONDAY 36 qT g 3 5 Setting Clock Time 1 Press and hold the CLOCK button The hour display will flash Release the button 2 Use the up down RH buttons to change the value 3 Press the CLOCK button again and the minute display will flash Use the RH buttons to change the value 4 Press the CLOCK button again and AM or PM will flash Use the RH buttons to change the value DEH 3000 Dehumidifier amp Ventilation System Controller Installation Operation amp Service Manual 5 Press the CLOCK button again and the day display will flash Use the RH buttons to change the value 6 Don t touch a
16. lashing 0 indicates it is in a wait mode and not available at the moment No 0 indicates the function is currently OFF Solid 0 before Indicates SETPOINT Dehumidifier on VENT Fresh air ventilation cycle in progress FAN Fan on Wait mode is a factory programmed time period meant to prevent short cycles This extends the life of the dehumidifier When a flashing 0 is encountered the unit is in wait mode and IT COULD BE UP TO 10 MINUTES BEFORE OPERATION RESUMES 3 1 Display e Whenever there is power to the control it will display the time the day relative humidity and temperature e When the control is actually switched ON the RH setpoint fan status run mode program or hold and fresh air ventilation status is displayed 12 68AM MONDAY 5 0 1 g SETPOINT 50 o DENT CLOSED o FAN AUTO HOLD e When a key is pressed the display will light for approximately v2 a minute e The Time and Day is displayed at the top of the screen e RH and Temperature are displayed in real time e A solid O before the SET POINT VENT OR FAN indicates the function is operating e A flashing 0 before the SET POINT VENT OR FAN indicates the unit is in wait mode 3 2 Setting During the set up process if you make a mistake simply continue You can always go back to adjust the settings If you leave the control alone and don t touch any buttons for 10 seconds the control wil
17. ny buttons for several seconds until the display stops flashing this will save your settings If you need to change anything go back to step 1 3 6 Adjusting the relative humidity SETPOINT The DEH 3000 senses the ambient relative humidity RH of the space in which it is located it comes factory preset to hold 50 relative humidity The relative humidity SETPOINT desired RH to be maintained operates the dehumidifier function of the Ultra Aire dehumidifier It has no effect on the optional VENT fresh air ventilation or FAN household air recirculation functions if they are being used Operation The standard range that the dehumidifier holds around your SETPOINT is 3 With a setpoint of 50 the dehumidifier will run until the relative humidity reaches 47 The dehumidifier will then switch off until the relative humidity reaches 53 Ambient RH 12 08AM MONDAY 4 RH Fi g SETPOINT 50 DENT CLOSED o FAN AUTO HOLD Current Setpoint If the setpoint is higher than the ambient relative humidity the space does not need to be dehumidified so the dehumidifier will not run Example Setpoint 50 RH Current condition 45 RH The dehumidifier will be off no 0 indicator will be displayed If your setpoint is below the ambient condition the dehumidifier will be on and 0 will display Example Setpoint 50 RH Current condition 55 RH The dehumidifier will be on 0 d
18. only the remainder of the original warranty period applicable thereto but all warranty periods will be extended by the period of time if any that the DEH 3000 Dehumidifier amp Ventilation System Controller is out of service while awaiting covered warranty service UPON THE EXPIRATION OF THE WRITTEN WARRANTY APPLICABLE TO THE DEH 3000 Dehumidifier amp Ventilation System Controller OR ANY PART THEREOF ALL OTHER WARRANTIES IMPLIED BY LAW INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE SHALL ALSO EXPIRE ALL WARRANTIES MADE BY THERMA STOR LLC ARE SET FORTH HEREIN AND NO CLAIM MAY BE MADE AGAINST THERMA STOR LLC BASED ON ANY ORAL WARRANTY IN NO EVENT SHALL THERMA STOR LLC IN CONNECTION WITH THE SALE INSTALLATION USE REPAIR OR REPLACEMENT OF ANY DEH 3000 Dehumidifier amp Ventilation System Controller OR PART THEREOF BE LIABLE UNDER ANY LEGAL THEORY FOR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES INCLUDING WITHOUT LIMITATION WATER DAMAGE THE END USER SHOULD TAKE PRECAUTIONS AGAINST SAME LOST PROFITS DELAY OR LOSS OF USE OR DAMAGE TO ANY REAL OR PERSONAL PROPERTY Some states do not allow limitations on how long an implied warranty lasts and some do not allow the exclusion or limitation of incidental or consequential damages so one or both of these limitation may not apply to you LEGAL RIGHTS This warranty gives you specific legal rights and you may also have other rights which vary from state to stat
19. ssary 4 Make the electrical connections to the terminals on the back panel as shown in the applicable wiring diagram see Sections 2 2 2 4 5 Test the installation see Section 2 5 Mounting Hole ON DET Optional OFF Use DET Damper Dehumidifier Fan White Wire Blue Wire Green Wire Optional See warning below DEH 3000 Dehumidifier amp Ventilation System Controller Installation Operation amp Service Manual 2 2 Wiring A WARNING D0 NOT ALLOW THE YELLOW WIRE FROM THE ULTRA AIRE DEHUMIDIFIER TO CONTACT THE RED OR WHITE WIRES FROM THE ULTRA AIRE DEHUMIDIFIER DAMAGE TO THE 24 VOLT TRANSFORMER WILL RESULT A WARNING THE REMOTE CONTROL OF THE ULTRA AIRE DEHUMIDIFIER OPERATES ON A LOW VOLTAGE CIRCUIT 24 VAC AND MUST NEVER CONTACT OR BE CONNECTED TO A HIGH VOLTAGE CIRCUIT A WARNING UNPLUG THE ULTRA AIRE DEHUMIDIFIER BEFORE WIRING THE DEH 3000 The installer must supply all field wiring including the wiring between the Ultra Aire dehumidifier and the DEH 3000 Some of the control wires leaving the Ultra Aire may not be used in some control situations and should be left disconnected with wire nuts taped onto the stripped ends Be sure to consult the electrical schematic in this manual or the internal electrical box of the Ultra Aire dehumidifier before making any control connections Ultra Aire Dehumidifier optional DEH 3000 Wiring Diagram DMP COMP FAN OOO A WARNING ONL
20. to switch vent mode to OPEN e Confirm that the Ultra Aire fan is ON Ventilation damper is OPEN Ultra Aire compressor must be OFF f Press and hold the WENT button until the OPEN flashes on the display g Release the WENT button then press it again to switch vent mode to CLOSED A WARNING DO NOT MAKE ANY OTHER CONNECTIONS OR TRANSFORMER DAMAGE MAY RESULT 7 Verify any additional optional control operations such as fan interlock or A C lockout 8 Proceed to the Operation section 2 6 Troubleshooting FOR THE HVAC PROFESSIONAL m No display on initial start up Note This is often the result of a drained capacitor The capacitor will recharge once power is applied or re applied to the unit Verify unit has power Turn unit off then on Disconnect the unit from power source then re apply power to the unit Display should now operate Function not working properly Verify wiring Verify voltage with voltmeter Dehumidifier not working properly See chart below Wire connections Operation Yellow amp Blue Fan amp Compressor Yellow amp Green Fan Only DEH 3000 Dehumidifier amp Ventilation System Controller Installation Operation amp Service Manual FOR INSTALLER amp HOMEOWNER 3 Operation On the display screen a solid 0 in front of any of the 3 functions SETPOINT VENT FAN indicates the function is operating A f
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