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INSTALLATION GUIDE

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2. 1 INTER Exhaust Motor 1 UP Exhaust Motor 2 CONT Both Motors 2 MIDDLE Both Motors 3 OFF Supply Motor 3 DOVVN Supply Motor YELLOW LIGHT DUOTROL BALANCING SYSTEM BALANCING MODE PROCEDURES STEPS 1 THROUGH 8 Page 10 Step 1 Press the and buttons simultaneously until you see the yellow light Once the indicator light turns yellow you are in balancing mode Step 2 When in balancing mode the selector switch becomes the motor selector switch INTER Right Motor CONT Both Motors and OFF Left Motor Step 3 Once the total cfm needed is determined you can start balancing the HRV ERV Set your fresh air supply by selecting the OFF position on the Duotrol Install your magnehelic gauge and air flow grid in the fresh air duct Step 4 Press the button to decrease the cfm or press the button to increase the cfm Step 5 Then perform the same operation on the stale air side by selecting the INTER position on the DuotrolTM Step 6 The CONT position will allow you to adjust the cfm on both motors proportionately if necessary Step 7 Once this is completed you have set the high speed on your HRV ERV To lock balancing mode you must press and buttons simultaneously and release The indicator light will turn green to indicate normal operation mode Step 8 Once high speed is set and locked switch to continuous on the Duotrol By using and
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4. 9 12 Benefits of the DuotrolfHSystem 10 13 Balancingtheunit 10 11 14 Controls Connection 12 13 15 Wiring Diagrams for furnace interlock systems 13 16 Troubleshooting a secs RE Pia Swe nere aes Oe Re dE 14 17 Maintenance naaa 0 a cbr aod RE rare vn ba ald 14 Page 3 1 PERFORMANCE amp SPECIFICATIONS Ventilation Performance HRV SS 3 80 FSD External Static Net Supply Gross Air Flow Gross Air Flow 4 Supply a Exhaust Pressure Air Flow Supply Exhaust in wg L s CFM L s CFM L s CFM 0 1 47 99 48 100 48 102 0 2 44 93 45 04 43 92 0 3 39 83 40 84 38 80 0 4 35 75 35 75 36 78 0 5 30 65 30 66 32 68 0 6 27 56 27 97 25 52 0 7 22 46 22 47 19 41 50 100 150 200 250 300 cfm L s n x 0 4719 n x 248 36 External Static Pressure in wg Pa Ventilation Performance ERV SS 3 80 FSD External Static Net Supply Gross Air Flow Gross Air Flow 4 Supply Exhaust Pressure Air Flow Supply Exhaust in wg L s CFM L s CFM L s CM 58 0 1 49 105 49 105 46 qun PS 0 2 46 97 47 99 41 86 0 3 44 92 44 93 41 86 AS on 0 4 37 80 38 81 34 73 a 0 5 34 73 35 74 29 63 g 0 6 29 62 29 63 25 52 0 7 23 48 23 49 18 37 f 50 100 150 200 250 300 cfm L s n x 0 4719 Energy Performance Energy Performance HRV SS 3 8
5. e 2 screws 8 x 3 8 e AC 120V power cord e Wall Mounting Bracket 5 FINDING A SUITABLE INSTALLATION AREA FOR HRV OR ERV The HRV ERV unit should be installed in a mechanical room or as close to an outside wall as possible This would assure a short run of insulated flexible duct The HRV ERV unit must always be installed in an area where the air is tempered to avoid freezing of the condensate line The contractor should install the unitin an area that is very accessible to allow the homeowner easy access for maintenance It is very important to install an electric receptacle 115v near the HRV ERV acseparate circuit breaker is also recommended You should have access to a condensate drain near the HKV ERV to avoid the use of condensate pump 6 INSTALLATION OF THE HRV ERV IMPORTANT Minimum installation requirements A Minimum two 2 x 4 50 8 mm x 101 6 mm wood wall studs and minimum 32 9 5 mm thick drywall is required to secure the HRV ERV wall bracket B Support for weight of 80 lbs which includes HRV ERV duct connections and accessories m 4 Proper installation requires that l na the unit be secure to the wall If i ill I 1 i i 4 1 H FY RAVEN I 1 3 HA 9114 VE there is no wall studs available TE VEE please secure a 3 4 plywood figure 6 1 Installation of the wall bracket Secure with two 10 x 14 screws to wall studs then fasten wall mounting b
6. Field Installed Low Voltage Figure 15 1 Standard forced air wiring diagram ALTERNATE FORCED AIR ETE TO INTERLOCKING WIRING 2 Some forced alr system thermostat will activate the cooling system when tied using the Standard forced air interlocking wiring If you have identify this type of thermostat you must proceed with the Alternate Forced Air Wiring LOCATING THE WIRING DIAGRAM NOTE TO INSTALLER Wiring Low Voltage HRV Controller Diagram for the entire line of HRV ERV Models are placed on the back of each Exhaust motor bracket Before tying the HRV ERV to a forced air system always refer to system s manual or CAUTION Thermostat that control manufacturer i A C system must use the Alternate up ETT Interlock Wiring Diagram Force Air System O AJ o z e lt Thermostat Field Installed Low Voltage Figure 15 2 Alternate forced air wiring diagram WARNING Always disconnect the unit prior to making any connections Failure to disconnecting the power could result in electrical shock or can damage the electronic boards wall controls and or unit CAUTION Minimum wire requirements is LVT18 CSA UL 4 strain to insure proper connection Page 13 16 TROUBLESHOOTING Need help You benefit from certified customer service ready to guide you Mina SOLUTIONS in the installation or operation of your HRV ERV not running e Verify polorization s
7. buttons set low speed on the HRV ERV 13 BALANCING THE UNIT CONTINUED WITH THE DUOTROL HIGH Exhaust Air to Outside SYSTEM AND Magnehelic gauge THE INTEGRATED BALANCING TAPS AND MAGNEHELIC GAUGE Balancing Tap Connection Magnehelic gauge LOW Fresh Air from Outsid Connecting the Magnehelic gauge to the collar balacing taps then proceed to section 13 on page 10 Duotrol Balancing System Procedures and follow the Steps 1 through Step 8 BALANCING CHART Balancing Chart when usingscollar pressure taps The balancing chart is based on a Pressure Fresh Air Exhaust Air Delta P DP measurement also Us CFM located on the access panel of the ventilation system 2 39 83 NOTE To perform a proper install 3 19 the External Static Pressure ESP 39 74 needs to be measured at each of the 4 stations Then proceed 29 61 to measure the Delta P DP to 26 56 determine the corresponding 24 50 airflow e g 50 CFM then do the 22 46 iteration until the unit is balanced 19 41 both the ESP and airflovvs 17 26 IMPORTANT Once balancing is complete insure all four pressure taps are sealed with the rubber caps Pressure taps 9753K74 supplied in the installation kit WITH AN AIRFLOW GRID amp MAGNEHELIC GAUGE Magnehelic Gauge with Air Flow Grid Inserting Air flow grid in duct Seal Air flow grid in duct with duct tape Page 11 14 CONTROLS CONNECTION RD 1 2 wires RD 2 RD 3P RD 4P
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10. 4 wires VECTOUCH 4 wires NOTE With LVC version 1 it is normal that the wall control LCD panels doesn t turn off when the Duotrol on the unit is in the OFF position Jumper JP 4 ON offers Intermittent and Continuous modes P RNC SS3 12 FSD SS3 80 FSD and the LCH Series Jumper JP 4 OFF offers Intermittent Recirculation and Continuous modes model DH and the SS3 12DD Series only To Casing Screw au for Ground Jumper JP 4 LVC Version 2 1 Relay k ama e aman EEE omuz omuz omuz omuz m omuz omuz omuz wm omuz muz mu muz onun onun muz nuz ee s s s s CAUTION Minimum wire requirements is LVT18 CSA UL 4 strain to insure proper connection Page 12 14 CONTROLS CONNECTION CONTINUED T3 TIMER 3 wires STANDARD FORCED AIR INTERLOCKING WIRING A relay is normally used when tying I Litt HO con 5 VDC a ventilation system to the forced air G R 00 i 5 TIMER distribution system Our Duotrol System gt you RGWYC is equipped with an internal relay that will activate the forced air system ventilator when there is a demand from the HRV ERV The Duotrol System will activate the INTERLOCK relay during the following modes Continuous Override Recirculation and Defrost See wiring diagram 1 je e sik m ul ik R B 24 32 5 VDC Low Voltage HRV Controiier Force Air System Legend
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15. openings 94 35 3 3 e Driveways auto exhaust Me RS ot BR A 18 457 mm Combustion appliances a A E il Pad p 3 e Gas meters oilfill pipes Be ERRANG Yu 4 e Garbage containers e Attics or crawl spaces eUnder deck or other areas of questionable air quality figure 10 1 Locating Outside Hoods IMPORTANT Always consult your national and local regulations building and safety codes 11 THE MATRIX HIGH PERFORMANCE VENTILATION HOOD AIRFLOW amp Exterior wall Exhaust air from home INSTALLATION TOP IMPORTANT Install ventilation hood a minimum of 18 457mm above grade Do not install under a deck enclose porch patio garages crawl spaces or attics Fresh air to home BOTTOM WARNING Insure the ventilation Exhaustair hood is at a minimum clearance of 6 ft to outside 1 83 m away from the exhaust vents of a combustion source and contaminants Uniquely design individual insulated transition duct UL 94 Rated IMPORTANT Always consult national and your local regulations building and safety codes Fresh air from outside LIMITATION This product is for residential applications only Transition Ex Gas furnace dryer gas boilers Ventilation connector plate range hoods barbecue garbage bin cap driveway or garage Al RFLOW Exhaust Air Flow Performance Supply Air Flow Performance PERFORMANCE DA
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17. 0 FSD ERW SS 3 80 FSD Supply Net Power Sensible Apparent Supply Net Power Sensible Apparent Temperature Air Flow Consumed Recovery Sensible Y Temperature Air Flow Consumed Recovery Sensible C F Ls CFM Watts Efficiency Effectiveness C F Ls CFM Watts Efficiency Effectiveness 0 32 19 40 28 64 72 S 0 32 20 41 30 65 74 0 32 30 65 40 59 85 0 32 30 65 36 64 71 M 25 13 18 37 30 55 73 E 15 5 16 35 27 54 80 This product earned the ENERGY STAR by meeting strict energy efficiency guidelines set by Natural Resources Canada and the US EPA It meets ENERGY STAR requirements only when used in Canada Total Recovery Efficiency 35 9 19 41 43 COOLING SPECIFICATIONS HRV SS 3 80 FSD ERV SS 3 80 FSD Size 20 x 1414 x 18 20 x 1472 x 18 Weight 33 5 Ibs 15 2 Kg 32 5 Ibs 14 7 Kg CFM 30 to 100 30 to 100 Type of heat exchanger cross flow Polypropylene cross flow Enthalpy Exchange surface 65 ft 65 ft Voltage 120 VAC 60 Hz 120 VAC 60 Hz Amperage 0 85A 0 85 A Defrost type Evacuation Evacuation Certification CSA HVI Energy Star CSA HVI Shipping Weight 41 Ibs 18 6 Kg 40 Ibs 18 1 Kg Dimensions re 14 Page 4 2 VENTILATION REQUIREMENTS DETERMINE YOUR VENTILATION NEEDS INSTALLATION How much fresh air do need Good air quality is based in part on the capacity of the home s ventilation system Usually the HRV s ERV s capacity is measured in CFM Cubic Feet per Minutes or L s Liter
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22. Item 102337 INSTALLATION GUIDE Greentek Models SS 3 80 FSD HRV item No 102208 SS 3 80 FSD ERV item No 102210 Imperial Models SS 3 80 FSD HRV item no 102257 SS 3 80 FSD ERV item No 102259 2100 M Z n H u 1 q b ENERGY STAR IAQ CERTIFIED PRODUCTS US INDOOR AIR QUALITY Product of Imperial Air Technologies Imperial Air technologies Inc reserves the rights to modify a product without prior notice whether in price design color or codes in order to offer at all times quality products that are highly competitive Imperial Air Technologies 480 Ferdinand Blvd Dieppe NB E1A 6V9 1 888 724 5211 Fax 506 388 4633 www imperialgroup ca Page 2 IMPORTANT PLEASE READ MANUAL BEFORE INSTALLATION CAUTION Do not install in a cooking area or connect directly to any appliance Turn off all integral disconnects before servicing NOTICE Prior to installing serious consideration must be taken to insure this ventilation system will operate properly if integrated to any other type of mechanical system i e a forced air system or an air handling unit To insure proper operation amp compatibilities of both system itis required thatthe airflovv s of the Heat Recovery Ventilator HRV or Energy Recovery Ventilator ERV be balanced by following the procedures found in this manual LIMITATIONS The product is for residential applications only Must be installed in accordance with all national and local regulat
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25. TA x O G LIMITATIONS This product is for 22 02 2 7 residential applications only Must be er 22 installed in accordance with all current c national and local regulation building Sc o Bs and safety codes eS 2 E 0 05 gs E os 0 30 45 60 75 90 105 120 CFM L s n x 0 4719 L s n x 0 4719 Page 9 12 BENEFITS OF THE DUOTROL SYSTEM ACTS AS A MODE SELECTOR INTERMITTENT When the selector switch Is in the intermittent position the HRV ERV will only run when there is a call for ventilation by any control At that time the unit will run on high speed until the condition is satisfied CONTINUOUS When the selector switch is in the continuous position the HRV ERV will run continuously on pre set speed except when there is a call for override by any control OFF When the selector switch is in the off position the HRV ERV will not come on even if there s a call for ventilation by any control MODE SELECTOR e Intermittent Continuous Off BUTTON Increase the speed of the selected motor SPEED ADJUSTMENT e Increase Speed e Decrease Speed 13 BALANCING THE UNIT OPEN FOR INSTRUCTIONS BUTTON Decrease the speed of the selected motor SD WITH THE DUOTROL USING THE SELECTOR SWITCH SYSTEM TIP TO INSTALLER When on Balancing Mode the Selector Switch allows you to choose tne motor you m want to set 9 A CLOSED DUOTROL COVER B OPEN DUOTROL COVER
26. anufacturer CAUTION The HRV and forced air system must be in continuous mode to achieve maximum comfort and to avoid cross contamination IMPORTANT For optimal performance of your HRV or ERV the installation of an optional 6 round galvanized backdraft damper is required on the fresh air to home duct work Page 6 figure 3 2 From Bathroom or Kitchen Minimum 10 3m To living space HRV ERV de K Forced Air System For minimum distance between return and forced air system check with your local building codes and forced air system manufacturer CAUTION nsure the unit runs in conjunction with forced air system Ref section 14 figure 3 3 Minimum 10 3m To living space 18 457 mm oa l Forced Air System HRV ERV K For minimum distance between return and forced air system check with your local building codes and forced air system manufacturer IMPORTANT Building and combustion appliance installation codes do not allow return air grilles or openings such as breather tee or indirect connections in an enclosed room that is susceptible to spillage of combustion appliances Simplified Connection Indirect Connection Breather Tee E 6 cm 4 INSTALLATION KIT INCLUDED IN THE figure 4 1 INSTALLATION KIT e 4 Collars e 4 Caps Pressure Taps 9753K74 e 1 Condensation Drain Line e 1 Drain Adapter with Nut e 12 screws 10 x 11 4
27. ded vacuum all surfaces inside the unit figure 17 3 Slide out the Core Page 14 Page 15 Item 102337 WW Manufacturing Group Imperial Air Technologies 480 Ferdinand Blvd Dieppe NB E1A 6V9 1 888 724 5211 Fax 506 388 4633 www imperialgroup ca ed dnosbjeuadwr mmm 97 886 909 XL 11 259 2 888 1 6A9 13 AN eddaiq pAlg pueu pi94 08 sa160j0uyoaa sly 1 dno15 Buunzsejnueyy LEECOL W37 q ae 1Na1491X3 s an anbiwjay in bubu 19SSI O L Inajesidse un p apie e 3 4019 N ZZ oanbi sau sa uanajuJ JHA DYA Np Juawaduejeq 9 18141197 e 9pILUNY JuawawgJ xa Jnad aunjelgdwea ej 319 uq Xa bupu 91n 8l191X8 imbl d l ej nb lp ny jos snos aj suep 9soda us 199 ap slog np Is 1314113 OS SNOS aj SUBp NILAJ asNaUIIS L IS JOIJLJ9A 9 0J1U09 ap l INS nipiulnu p nean u JaSINpay e apiwiny doJ 158 118 e JNIJBILIPILINU UN JAJJBISU JUANI ULATU R NUIJUOI poui np uonejiNusA apow l bubU Jejsiprwnysap Ins gJ p uny p Jajuawbny 295 d011188 118 sin ouu s p abeJodue 1914119 Seq SUOIXIUUOI ap 81109 El UI9 e JULINOJ l IS J IJH A JNAWIIOJSUBJ 3419432 JUBINOI
28. f the HRV ERV and hand tighten the plastic nut and with a wrench tighten the nut another half turn to assure a better seal Install the condensate line included in drain kit Insert condensate tubing by pushing clear plastic line over drain adapter Make condensate trap by looping the clear plastic tubing This procedure is to avold foul odor to enter the HRV or ERV figure 8 1 Make a loop in condensate line not be subject to figure 8 2 Use a condensate pump if you don t have access to a drain freezing temperatures 9 DEDICATED ELECTRIC RECEPTACLE IMPORTANT Always consult a certified technician to insure proper installation of main power NOTE If LED light on the Duotrol remains green motors not energized controls do not operate Polarization in main AC outlet are inverted It is recommended that the HRV ERV have a dedicated receptacle with 115v t is not recommended to connect unit with an extension cord MM figure 9 1 Insert the power cord on top of the unit Press firmly to make sure the power cord Is secure Page 8 10 OUTSIDE FRESH AIR AND EXHAUST AIR HOODS TIPTOINSTALLER Werecommend and it is good practice to have a minimum of 6ft 1 83 m between the supply and exhaust vents unless using a concentric vent 6ft 1 83 m design to prevent contamination of ee n intake air NOTE Outdoor air intake hoods shall be located to avoid contamination from sources such as e Exhaust air
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30. ions building and safety codes TO REDUCE OR AVOID THE HAZARDS OF ELECTRIC SHOCK AND FIRE CAUTIONS CONCERNING THE OPERATION AND FULL EFFICIENCY OF THIS PRODUCT Before servicing or cleaning the HRV system always remove the Use a dedicated AC 120V outlet only power cord from the AC wall outlet e Do not obstruct or cover the air intake or air outlet of the ventilation To reduce the hazards of electric shock or fire do not perform any system service to the HRV system other than those stated in the operating manual instructions e Do not modify repair or disassemble this system These tasks are to be performed by authorized serviced personnel only Fire electrical To reduce the risk of electric shock this ventilation system HRV ERV shock and or bodily injury may occur if these warnings are not comes equipped with a 3 prong plug in This plug will fit in a polarized followed outlet only one way e To prevent injuries do not operate the ventilation system while Do not use ventilation system for outdoor application servicing or maintaining There are impeller wheels turning at a very e Do not pull or twist power cord when disconnecting it from the o that must fully stop rotating prior to accessing the inside of ventilation system Grasp the plug firmly not the cord e Always assess the operation of the ventilation system on how it may interact with vented combustion equipment ie Gas Furnace Oil Furnace Combusti
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32. on Appliances etc Do not modify the power plug in any way if modified risk of electric shock fire or even damage to the unit may occur Do not use the ventilation system for removal of flammable fumes gases or connect directly to any appliances Do not qse for swimming pool spa applications Imperial Air Technologies Inc is the only manufacturer that offers yau Complete range of products designed to improve indoor air quality and that provides a wide selection of accessories to facilitate installation Our vision To offer a complete range of products that satist es environmental concerns Whether your needs involve ventilation or filtration we have the customized solution for you with its range of quality products backed by the best warranty in the industry CONTENTS SECTION PAGE 1 Performance 6 Specifications 4 2 Ventilation requlrements 5 3 Types of Installations ss cae awe ao hum ma hu sale nah 5 6 SASORI penseer igs vu pu c RRS PAT eee 7 5 Finding a suitable installation area for HAVorERV 7 6 Installation oftheHRV ERV 7 7 Insulated Flex from Unit to DutsideVVall 8 8 Condensation DrainLine 8 9 Dedicated Electric Receptacle 8 10 Outside Fresh Air and Exhaust Air Hoods 9 11 The matrix High Performance Ventilation Hood
33. or optimal performance of your HRV or ERV the installation of an optional 6 round galvanized backdraft damper is required on the fresh air to home duct work figure 3 1 Page 5 3 TYPES OF INSTALLATIONS CONTINUED EXHAUST AT THE SOURCE AND SUPPLY IN THE RETURN This application uses a devoted duct system for the exhausting of stale air accumulated in the home The fresh air is dumped into the return air duct and is distributed thru the home by the existing supply air ductwork of the forced air system see figure 3 2 Make sure vvhen using this application that your fresh air duct connection to the forced air system return air duct is at a minimum of 10ft 3m from the forced air system You should check with your local code or the forced air system s manufacturer The forced air system s blower does not essentially have to run when the unit is in continuous mode but recommended for maximum efficiency NOTE TO INSTALLER Dwellings with multiple forced air systems requires one HRV ERV per system EXHAUST AND SUPPLY IN THE RETURN When using this application make sure that there is minimum 6 feet between the fresh air and exhaust air connections of the HRV ERV in the return air duct see figure 3 3 Supply air from HRV ERV must be at least a minimum of 10ft 3 m from the forced air system Can be different from a region to an other You should check with your local code or the forced air system s m
34. racket to plywood TIP TO INSTALLER If the unit is not level improper drainage will occur and could lead to moisture and leakage problems It is recommended to use approximately 16 inches of flexible duct between the HRV ERV and your rigid duct The flex duct is mounted the same way to the HRV ERV as the insulated flex figure 6 2 Hang HRV ERV to wall mounting figure 6 3 When completing the procedure figure 6 4 Proceed to secure HRV ERV to bracket make sure that the HRV ERV is leveled bracket with the two 8 x screws Page 7 7 INSULATED FLEX FROM UNIT TO OUTSIDE WALL TIP TO INSTALLER To ensure a better installation and to avoid an undesired bend in the duct align the duct with the collar before securing over the four hooks WARNING Always fix and secure the 5 collars with the screws supplied Avoiding this critical step the unit will accumulate condensation PE figure 7 1 Insert vinyl duct over the hooks figure 7 2 Insertinsulation inside the collar figure 7 3 Finish by taping the duct on the and seal with a Tie wrap collar Once insulated flex is attached to the collar slide collar in keeper section fixed collar to the unit with four screws supplied in installation kit figure 7 4 Slide collar on the unit Figure 7 5Fix and secure the collars to the HRV ERV with the 10 x 14 screws supplied in kit 8 CONDENSATION DRAIN LINE Insert the threaded drain adapter thru the bottom o
35. s per Seconds of fresh air being distributed in the living space The Room Count Calculation or the Air Change per Hour Method shows you how to determine your ventilation needs see chart on right LIVING SPACE Master Bedroom With Basement Single Bedroom Living Room Dinning Room Family Room Recreation Room Other Kitchen Bathroom Laundry Room Utility Room A Room Count Calculation NUMBER OF ROOMS TOTAL ventilation requirement add last column B Air Change per Hour Method TOTAL cuftX 0 35 per hr total Take total and divide by 60 to get CFM Example A 25 x 40 house with basement 1 000 Sa ft x 8 high x Zyrst floor basement 16 000 cu ft 16 000 cu ft x 0 35 A H 5 600 cu ft 5 600 cu ft 60 Minutes 93 3 CFM 93 3 CFM ISVDUR VENTILATION NEED CFM L S x 20 cfm 10 L s x 20 cfm 10 L s x 10 cfm 5 L s x 10 cfm 5 L s x 10 cfm 5 L s x 10 cfm 5 L s x 10 cfm 5 L s x 10 cfm 5 L s x 10 cfm 5 L s x 10 cfm 5 L s x 10 cfm 5 L s x 10 cfm 5 L s CFM REQUIRED 1 CFM 0 47189 L s 1 L s 3 6 m3 hr 3 TYPES OF INSTALLATIONS INDEPENDENT SYSTEM INSTALLATION This application uses a devoted duct system for the supply and the exhausting of stale air accumulated in the home It is recommended to install fresh air grilles in all bedrooms and living areas Exhaust the stale air from the bathroom kitchen and laundry room see figure 3 1 IMPORTANT F
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39. ystem e Verify breaker in electrical box Call Toll free 1 888 724 5211 e Verify that dehumidistat or switch on HRV ERV are activated to supply power to unit e Unplug HRV ERV verify if controller is wired correctly to the connection box on the side of the unit e Verify low voltage box Duotrol on the unit ACCESSORIES Airis too dry e Increase humidity level on dehumidistat Using the appropriate accessories your e Switch ventilation mode from continuous to intermittent system will be simple to install and its e Install a humidifier performance will be optimal Choose from the complete range of ventilation accessories and products by Imperial Air Technologies nc e Verify if dryer is venting in basement eAir too humid e Reduce the humidity level on the controller e Verify if heating wood Is stored in basement e Wait for outside temperature to change Ex Summer can be extremely humid e Verify balancing of the HRV or ERV 17 MAINTENANCE WARNING ALWAYS UNPLUG HRV ERV DURING SERVICING WHEN SHOULD SERVICE MY HRV ERV HEAT RECOVERY amp ENERGY RECOVERY CORE UNIT Once a year or as needed vacuum the four surfaces let soak in warm water for figure 17 1 Slide Out the Filters figure 17 2 Vacuum the Filters 15 minutes then spray rinse and let dry FILTERS Four times a year or as needed vacuum the filters Replace filters once a year INSIDE THE UNIT Once a year or as nee

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