VHR704R Installation Manual
Contents
1. Specifications and Ratings e Model VHR 704R e Insulated with 1 25 mm aluminum foil face Supply amp exhaust ducts 5 125mm oval Total assembled weight Ibs 13 5 kg high density polystyrene foam to prevent e Mounting Wall bracket included e Cabinet 24 ga steel w powder coat finish condensation and meet the requirements of Motors ebm motors w backward curved blades the UL Volts Frequency Amps Watts e Filters 2 washable electrostatic filters e Core Aluminum 8 5 216mm x 8 5 115V 60Hz 040 40W 8 5 216mm x 8 205mm x 0 123 8mm 216mm x 8 205mm 3 plug in power cord w 3 prong plug Submitted by Date Qty Model Comments Project Location Architect Engineer Contractor INSTALLATION PRACTICAL TIPS Install the unit close to the outside wall on which the supply and exhaust hoods will be mounted Have a nearby power supply 120 Volts 60Hz power cord is 3 feet long Mount the unit as level as possible in order to allow proper condensate drainage Have access to a water drain for the condensate of the unit during defrost Have a certain amount of heat around the unit attic installation is not recommended Installations close to the living Space such as closets should be designed to minimize noise or vibration transfers Have access for future maintenance 10 is recommended for remova2. FURNACE 24 VOLT TERMINAL BLOCK COOLING SYSTEM Distributed by Fantech reserves the right to modify at any time and without notice any or all of its products features designs components and specifica tions to maintain their technological leadership position Canada 50 Kanalflakt Way Bouctouche NB E45 3M5 Phone 800 565 3548 506 743 9500 Fax 877 747 8116 506 743 9600 404663 Rev Date 110909
3. gt Ff a 1 te C 4 Ventilator Your Ventilation Solutions Company installation Manual IMPORTANT PLEASE READ THIS MANUAL TESTED CERTIFIED BEFORE INSTALLING UNIT CAUTION Before installation careful consideration must be given to how this system will operate if connected to any other piece of mechanical equipment i e a forced air furnace or air handler operating at a higher static After installation the compatibility of the two piec es of equipment should be confirmed by measuring the airflow of the Heat Recovery or Energy Recovery Ventilators It is always important to assess how the operation of any HRV ERV may interact with vented combustion equipment i e Gas Furnaces Oil Furnaces Wood Stoves etc NEVER install a ventilator a situation where its normal operation lack of operation or par tial failure may result in the backdrafting or improper functioning of vented combustion equipment Your ventilation system should be installed in conformance with the appropriate provincial or state requirements or the absence of such requirements with the current edition of the National Building Code and or ASHRAE s Good Engineering Practices INSTALLATION OPERATION AND MAINTENANCE MANUAL The Best Limited Warranty in the Business The heat recovery aluminum core has a limited lifetime warranty The motors found in all Fantech HRV s require no lubrication and are factory balan
4. area Alternate Method Number of rooms CFM 1 5 01 if yes add 20 cfm 10 if no O Room classification Master bedroom CFM Required Basement Bedrooms sv others tem Kitchen Bathroom Pte Lo P mmen _ Total Ventilation Requirements add last column Laundry room Utility room Compact top port design HRV with easy mount wall bracket Brings a continuous supply of fresh air into a home while exhausting an equal amount of contaminated air HRVs use what 15 called a sensible heat recovery core This special core transfers heat from the exhaust air stream to the incoming air stream Fresh incoming air is tempered by the heat that is transferred from the outgoing air to save on energy costs The VHR 704R is equipped with automatic defrost mechanisms so even if you live in the coldest cli mates you can use your HRV all year long FEATURES Super Compact Size e Top Port Design Fits in Tight Spaces e Includes Easy Mount Wall Bracket e Aluminum Heat Recovery Core e 5 125mm Oval Duct Connections e Easy Access Service Door e 3 914mm Plug in Power Cord e Only 30 Ibs 13 5 kg e Electrostatic Filters washable e Easy Core Guide Channels For Removing Core e Multiple Speed Operation ACCESSORIES e EDF Multi function control e RIS3 00 40 60 minute ove
5. balanced and lubricated for life They require no maintenance The unit The inside of the unit should be vacuumed yearly careful not to damage any of the mechanical components and elec trical connections Outside hoods The outside hoods need to be checked every season to make sure there are no leaves or insects blocking the airflow Check regularly that there are no pollut ants near the intake hood Make sure they are clear of any snow accumulation during the winter months Filters need to be checked regularly FILTERS The filters 2 need to be checked and cleaned every three months or when they appear dirty Wash in warm soapy water mild detergent or use a soft brush vacuum The filters should be replaced when they can no longer be cleaned properly gt Heat recovery HEAT RECOVERY CORE The heat recovery core needs to be checked and cleaned every six months The core can be cleaned using a mild soap and water Hinse thoroughly Handle with care Hot water and a strong detergent will damage the heat recovery core The drain pan and drain line Units with drain lines should have their line and connection checked regularly Clean Core and Filters Every 3 6 Months Unplug unit before doing any repairs or maintenance Open access door eL Carefully grip handle of core and pull out Core will slide out of the channel c Once removed from the cabinet remove filt
6. comes on when its time to clean unit POWER On Off and Reset MODES Select Intermittent Recirculation or Continuous Ventilation Modes DEHUMIDISTAT CONTROL EDF5 see description on top of this page MULTI FUNCTION WALL CONTROL Control multiple func tions of your HRV with one slimline wall con trol Two wire connec tion simplifies installa tion Use one EDFS per HRV installed 1 8 130 mm Width 4 1 2 110mm Height 5 1 8 130mm Thickness 5 8 15mm MODE SPEED CYCLE CONTROL OVERRIDE SPEED oet Unit to Low oet unit to cycle on CONTROL Medium or High 15 20 or 30 min Push to select opeed utes every hour override speed of unit TROUBLESHOOTING Problem Air is too dry Air is too humid Persistent condensation on window Poor Air Flows Supply air feels cold HRV and or Ducts Frosting up Condensation or Ice Build Up in Insulated Duct to the Outside Causes Dehumidistat control is set too low HRV out of balance Dehumidistat control is set too high Sudden change in temperature storing too much wood for heating Dryer vent exhaust is inside home Poor air circulating near windows HRV out of balance Well sealed basement door 15 closed Improper adjustment of dehumidistat control HRV out of balance 1 4 6mm mesh on the outside hoods is plugged Filters plugged Core obstructed House grilles closed or b
7. deliver is directly related to the total external static pressure E S P of the sys tem Static pressure is a measure of resistance imposed on the blower by length of duct work number of fittings used in duct work duct heater etc SUPPLY AIR DUCTING In homes without a forced air furnace fresh air should be supplied to all habitable rooms including bedrooms and living areas It should be supplied from high wall or ceiling locations Grilles that diffuse the air comfortably such as Fantech Contour Grilles are recommended avoid possible noise transfer through the ductwork system a short length approximately 12 300 mm of nonmetallic flexible insulated duct should be connected between the HRV and the supply exhaust ductwork system If the floor is the only option available then special care should be taken in locating grilles Areas such as under baseboard heaters will help to temper the air Also optional inline duct heaters are available for mounting in the supply duct work to add heat if required In homes with a forced air furnace you may want to connect the HRV to the furnace ductwork see information below Exhaust Air Ducting PRACTICAL TIPS The stale air exhaust system is used to draw air from the points in the house where the worst air quality problems occur Due to its lower capacity the VHR 704R is designed to vent from a single source point only and to the bath room that is closest to the unit or directly out of the furnace
8. hood a gt E DET m 2 Pull the insulated flexible duct through the opening until it is well extended and straight Slide the duct s inner vinyl sleeve over the hood collar and secure pull the insulation over the duct and then the vapor barrier over the sleeve and secure with duct tape 4 Using a caulking gun seal around both hoods to prevent any leaks INSTALLING DUCTS TO FROM INSIDE To maximize airflow in the ductwork system all ducts should be kept short and have as few bends or elbows as possible 45 elbows are preferred to 90 elbows Use Y tees instead of 90 tees whenever possible All duct joints must be fastened with screws or duct sealant and wrapped with a quality tape to prevent leakage Aluminum foil duct tape is recommended Galvanized ducting from the HRV ERV to the living areas in the house is recommended whenever possible although flexible duct can be used in moderation when necessary Warning The VHR 704R should be installed with a 5 125mm duct system that has less than ft 25m of equivalent duct length on the supply and on the exhaust side If longer runs are required increasing the duct diameter or following the instructions below might help It is the responsibility of the installer to ensure all ductwork is sized and installed as designed to ensure the system will perform as intended All air movement devices have a performance curve The amount of air CFM that an HRV will
9. 3 auauM sjo43u09 0 899 uo Ayuejod aAJa8sq 14 ELECTRICAL CONNECTIONS BROWN BLUE BLACK V BROWN BLUE BLACK V RED WHT BLUE RED I BLK WHT GREY 2 BLACK g az lt N JUMPER SETTINGS 2 gt 2 1 gt V 18 ELECTRICAL CONNECTIONS ELECTRICAL TION TO A FURNACE PRACTICAL TIPS 16 Caution e Never connect a 120 volt AC circuit to the termi nals of the Accessory Control Contacts Only use the low voltage class circuit of the furnace blower control For a Furnace Connected to a Cooling System e some older thermostats energizing the and G termi nals at the furnace has the effect of energizing Y at the thermostat and thereby turning on the cooling system If you identify this type of thermostat you must use the Alternate Furnace Interlock Wiring Fantech United States 10048 Industrial Blvd Lenexa KS 66215 Phone 800 747 1762 913 752 6000 Fax 800 487 9915 913 752 6466 www fantech net info fantech net Standard Accessory Control Contact THERMOSTAT TERMINALS FOUR WIRE BN TWO WIRE heating only HRV ELECTRONIC BOARD FURNACE 24 VOLT TERMINAL BLOCK COOLING SYSTEM Alternative Accessory Control Contact THERMOSTAT TERMINALS FOUR WIRE REN TWO WIRE heating only CLIS HRV ELECTRONIC BOARD
10. ACTICAL TIPS NOTE When an Intellitek control 15 installed the rocker switch located on the right hand side of the HRV will be automatically deactivated giving the user complete control from wherever he she wishes to mount the control pad NOTE The override speed cannot be set at a fan speed lower or equal to the normal operating fan speed For example if the unit is normally operating at a medium fan speed the override fan speed will be automatically set to high NOTE EDF5 model changing the override speed will change default override speed for other external controls EXAMPLES If on the EDF5 control you have set the override control at medium and you start an external remote control 15 min timer the unit will run at medium speed for 15 min e wire installation 4 wire installation 3 wire installation 1 2 wire installation 2 wire installation Dehumidistat The wall mount dehumidistat monitors the humidity level in the area it is installed When the humidity level rises above the desired set point the HRV will activate to high speed override mode Once the humidity level returns to desired condition the unit will return to the normal mode Dehumidistat 11 The wall mount dehumidistat offers the same features of the dehumidistat plus additional off on control for the HRV Dial illuminates when in override mode 5 3 The 5 3 is d
11. RV ERV is on to provide good air distribution 2 Weatherhood gement is for drawing purposes only 3 Due to the differences in pressure between the HRV ERV and the equipment it is being connected to the HRV ERV s airflow should be confirmed on site using the balancing procedure found in the installation manual If a release is required due to the furnace pulling too much air from the HRV ERV special care and attention is needed to its design Building Codes and Combustion Appliance Installation Codes do not allow location of return air grilles or any opening such as a breathing tee in an enclosed room with spillage susceptible combustion appliances 8 Example diagram only Duct configuration may change depending on model AIRFLOW BALANCING Fantech s superior design and use of EBM motors results in a steep fan curve that usually does not require balancing Commissioning the system after installation is recommended which includes confirming the proper operation of the system and how it interacts with other components within the home AIRFLOW STATION GRID METHOD 1 For this flow measuring station cut the duct and place the flow measuring station between each section of duct Make sure that the flow measuring station s air direction arrow points in the direction of the airflow Secure the flow measuring station with duct tape 3 Adjust the Supply Air Out damper until you reach the desired velocity Follow the previous
12. V and all condensate lines must be installed in a space where the temperature is maintained above the freezing point A P trap should be made in the drain line This will prevent odors from being drawn back up into the unit Install the drain hose making a P trap 1 Install the drain nipple 2 INSTALLING DUCTS GOING FROM OUTSIDE PRACTICAL TIPS e Decide where your intake and exhaust hoods will be located Locating the Intake Weatherhood e Should be located upstream if there are prevailing winds from the exhaust outlet e At least 6 2m away from dryer vents and furnace exhaust medium or high efficiency furnaces e A minimum of 6 from driveways oil fill pipes gas meters or garbage containers At least 18 457mm above the ground or above the depth of expected snow accumulation e At least 3 1m from the corner of the building e Do not locate in a garage attic or crawl space Locating the Exhaust Weatherhood e At least 18 457mm above ground or above the depth of expected snow accumulation At least 3 1m away from the corner of the building e Not near a gas meter electric meter or a walkway where fog or ice could create a hazard e Not into a garage workshop or other unheated space When installing the weatherhood its outside perimeter must be sealed with exterior caulking A well designed and installed ducting system will allow the HRV to operate at its maxi
13. ation of an Winter Humidity control is very important during the winter months This is when problems will be most apparent since condensation on the windows will often occur The colder the outside temperature the greater the risk of condensation in the home The average relative humidity should be maintained between 30 and 60 to avoid condensation Low speed continuous ventilation with high Speed override is recommended Spring Temperatures are more moderate and become warmer each day keep the humidity and tem perature uniform set the dehumidistat higher if installed You may also switch the HRV to standby mode if desired Fall Hain and rapid temperature changes make it difficult to control the internal humidity level and may result in condensation on the windows remote dehu midistat may help give greater control over the inside environment Summer The air is sometimes hot and humid To stop the warm humid air from entering set the dehumidistat at its high est level If the Intellitek series controller is installed the air exchanger can be set to cycle the unit on and off as desired from that wall control However continuous ven tilation is recommended MODES OF OPERATION The entire line of SHR VHR series Heat Recovery Ventilators comes equipped with Fantech s new electronic uni control board which offers wide variety of features making it the ultimate ventilation control system Fa
14. auge and MBS High to high and low to low e Head pressure from gauge and convert it to cfm using the chart for the unit s MBS Record reading e This process must be done twice once for the supply duct system and once for the exhaust duct system Step 4 Balancing the airflow Both the supply and exhaust measurements taken in step 3 must be greater than or equal to the Total Ventilation Capacity An HRV is deemed balanced if the supply and exhaust flow are within or 10 of each other HIGH LOW LOW HIGH e From the chart on the MBS determine the pressure reading which corresponds to the ventilation rate required TVC With the measuring gauge attached to the MBS slowly close volume damper until gauge reads the correct pressure e Lock volume damper in position e Hepeat the above procedure for the second duct system It does not matter whether the supply or exhaust is adjusted first 10 MAINTENANCE CAUTION sure UNIT IS UNPLUGGED BEFORE ATTEMPTING ANY MAINTENANCE WORK The following components should also be inspected regularly and well maintained PRACTICAL TIPS e o prevent electrical shock check that the unit is unplugged before doing any repairs or maintenance e A yearly inspection is recommended to ensure the efficiency and trouble free use of your system Run through the system and verify the different operating modes The motor The motors are factory
15. ced to prevent vibration and promote silent operation The limited warranty covers normal use It does not apply to any defects malfunctions or failures resulting from improper installation abuse mishandling misapplication fortuitous occurrence or any other circumstances outside Fantech s control Inappropriate installation or maintenance may result in the cancellation of the warranty Any unauthorized work will result in the cancellation of the warranty Fantech is not responsible for any incidental or consequential damages incurred in the use of the ventilation system Fantech is not responsible for providing an authorized service center near the purchaser or in the general area Fantech reserves the right to supply refurbished parts as replacements Transportation removal and installation fees are the responsibility of the purchaser The purchaser is responsible for ensuring that applicable local and national codes are observed The warranty is limited to 5 years on parts and 7 years on the motor from the date of purchase including parts replaced during this time period If there is no proof of purchase available the date associated with the serial number will be used for the beginning of the warranty period This warranty is the exclusive and only warranty in effect relative to the ventilation system and all other warranties either expressed or implied are invalid Hustrations amp images in thi
16. e automatic defrost sequence 15 activated at a and exchanging air with the outside The heat an outdoor temperature of 23 F 5 and recovery ventilator HRV constantly exchanges the lower During the defrost sequence the fresh air air at the rate you select either at low or medium is interrupted momentarily and indoor air is speed and switches to high speed when activated allowed to recirculate in the exchanger to maxi by an optional remote control The Low and Med m m mize the effectiveness of the defrost strategy fan speed selection will cause the unit to operate The unit then returns to normal operation until in continuous exchange mode at an exchange rate of 3596 and 50 maxi X the next defrost sequence mum airflow rating respectively Continuous mode is recommended since pollutants are slowly but constantly being generated in your house 11 12 OPERATION OPTIONAL REMOTE CONTROLS PRACTICAL TIPS To avoid window condensation e t is not necessary to change the humidity control every day Monitor the average weekly temperature or experiment with various settings until you find a level that is comfortable for you Adjust the control when needed NOTE A dehumidistat is ideal for use in energy efficient houses where indoor humidity during the heating season is higher than outdoor levels High humidity is a major cause of structure damage and IAG problems such as mold and mildew PR
17. ers d Wash core in warm soapy water do not use dishwasher B Install clean core by a First mounting the bottom flange of the core guide into the bottom channel approximately 1 4 6mm b Mount the left or right side flange of the core guide approximately 1 4 6mm followed by the other side Mount the top flange of the core guide into the top channel approximately 1 4 Bmm With all four corners in place and the core straight and even push hard in the center of the core until the core stops on the back of the cabinet C d Install the clean filters OPERATION A Heat Recovery Ventilator HRV is designed to bring fresh air into a building while exhausting an equal amount of stale air During the winter months the incoming cold fresh air is warmed by utilizing the heat recovered from the stale air before it is exhausted to the outdoors During sum mer months when the indoor space 15 air conditioned the HRV will help in cooling the incoming fresh air with the stale air that is being exhausted The VHR 704R is designed to run continuously or on intermittently giving the homeowner complete control over their air quality Continuous low speed ventilation is recommended which will help eliminate carbon dioxide voc s and other gases as well as freshen up the home Intermittent high speed ventilation can be obtained through a variety of optional remote controls found in this manual Below are some examples of seasonal oper
18. esigned to provide an intermittent boost to the Heat Energy recovery ventilator Depressing the fan control button will energize the HRV ERV system into high speed from a low or standby mode The ventilator can be set to continue on high for 20 40 or 60 minutes by pressing the control button one two or three times Pressing the button a fourth time will cancel the timing function EDF 1 The EDF 1 is designed to provide 3 modes of operation to the Heat Energy recovery ventilator Pressing the Push button once initiates the unit to run at a continuous low speed of operation green Depressing the button twice allows the ventilator to run for 20 minutes and then turns off for 40 minutes yellow Touch the button a third time and the system will run continuous on high red The ven tilation system will stay on the last function selected until it is changed 20 min Timer The 20 minute remote timer is typically installed in areas where contaminated such as moisture and odors are produced Simply push the button and the HRV will activate to high speed for 20 minutes Up to 5 electronic timers can be installed throughout the building at a distance of up to 900 feet 152 meters from the HRV OPTIONAL CONTROL DIGITAL DISPLAY shows Indoor Humidity Level This control will not read below 29 RH OVERRIDE TIMER When pressed unit will provide high Speed ventilation for one 15 30 or 60 minute period MAINTENANCE LIGHT Light
19. l of core ELECTRICAL 3 prong plug in power cord LOCATION The HRV must be located in a heated space where it will be possible to conveniently service the unit Typically the HRV would be located in the mechanical room or an area close to the outside wall where the weatherhoods will be mounted basement area 15 not convenient or does not exist a utility room or laundry or closet may be used Attic installations are not normally recommended due to the complexity of work to install freezing conditions in the attic difficulty of access for service and cleaning Connecting the following appliances to the HRV is not recommended including clothes dryer range top stovetop fan central vacuum system These appliance may cause lint dust or grease to collect in the HRV damaging the unit NOTE Connecting any of these type of appliances to the HRV will invalidate your warranty MOUNTING EASY WALL MOUNT Attach bracket to wall lift unit 30 65 1 3 5 kg amp slide nuts into Slots on bracket tighten screws to secure unit to bracket Insert the Safety screws amp place wall bumpers to level off the unit Safety screws included bumpers on back of unit included INSTALLING DRAIN LINE Draintine not included in kit Through normal operation and during its defrost mode the HRV may produce some condensation This water should flow into a nearby drain or be taken away by a condensate pump The HR
20. locked Dampers are closed if installed Poor power supply at site Ductwork is restricting HRV Improper speed control setting HRV airflow improperly balanced Poor location of supply grilles the airflow may irritate the occupant Outdoor temperature extremely cold HRV air flows are improperly balanced Malfunction of the HRV defrost system Incomplete vapor barrier around insulated duct A hole or tear in outer duct covering Solutions Increase the desired level of humidity Change ventilation mode from continuous mode to standby Balance HRV Heduce the desired level of humidity Combine this step with use of con tinuous exchange mode Wait until outside temperature stabilizes winter Heating will also Improve situation otore a majority of your wood outside Even dried a cord of wood con tains more than 20 gallons of water Arrange outside vent for dryer Open curtains or blinds Bay or bow windows may require mechanical method Balance HRV Open the door or install a grill on the door Heduce the desired level of humidity Combine this with the use of con tinuous exchange mode Balance HRV Clean exterior hoods or vents Remove and clean filter Remove and clean core Check and open grilles Have electrician check supply voltage at house Check duct installation Increase the speed of the HRV Have contractor balance HRV Locate the grilles high on the walls or under the baseboa
21. mum efficiency Always try to keep duct runs as short and straight as possible See Installation Diagrams for installation examples INSTALLING THE DUCTING TO THE WEATHERHOODS The inner liner of the flexible insulated duct must be clamped to the sleeve of the weatherhoods as close to the outside as possible and to the appropriate port on the HRV The insulation should remain full and not be compressed The outer liner which acts as a vapor bar rier must be completely sealed to outer wall and the HRV using tape and or caulking good bead of high quality caulking preferably acoustical sealant will seal the inner flexible duct to both the HRV port and the weatherhood prior to clamping To minimize air flow restriction the flexible insulated duct that connects the two outside weatherhoods to the HRV should be stretched tightly and be as short as possible Twisting or folding the duct will severely restrict air flow Outside wall Insulated flexible Ducting Inner liner BN BBB Sleeve Outer liner 1 Using the collar of the out side hood outline the intake amp exhaust holes to be cut The holes should be slightly larger than the collar to allow for the thickness of the insulated flexible duct Cut a hole for both the intake and exhaust hoods 3 Push the hood into the opening Attach the hood to the outside wall with mounting screws Hepeat the installation procedure for both the Supply and Exhaust
22. ntech engineers have used the latest technology to provide solid trouble free operation under any conditions The Fantech uni control board offers stand alone operating capabilities as well as an exclusive 2 wire communication to most external controls The trouble free optional controls include two different rotary dial dehumidistats an air quality sensor 3 wire communication required a 15 minute remote push button timer as well as the most sophisticated line of remote wall mounted controls the Intellitek SMR An on board diagnostic LED helps find problems quickly and efficiently For example the LED can be used to signal a broken or shorted electronic wall control wire Electronic air temperature probe gives this board accurate readings in order to minimize unnecessary defrost operation and the on board jumpers provide the user with the option of adjusting defrost time and sequence to optimize performance under abnormal conditions The defrost operation is automatic and 15 usually never adjusted Air from Airto Air to Air from from Airto House House Outside Outside House House a 1 Continuous Ventilation Mode 2 Defrost In this mode of operation both fans are operating Th
23. r ride e RTS2 20 minute over ride e 5 Multi function control e MDEH1 Dehumidistat e EDF1R Triple function wall control VHR 7048 SPECIFICATIONS CASE 24 gauge galvanized steel Baked powder coated paint antique white Cabinet fully insulated with 1 25 aluminum foil face high density polystyrene foam to prevent condensation and meet the requirements of the UL SAHF MOTORS Two 2 German manufactured factory balanced ebm motors with backward curved blades Motors come with permanently lubricated sealed ball bearings to guarantee long life and maintenance free operation Seven 7 year warranty CORE Aluminum heat recovery core configured for efficient cross flow ventilation Core is 8 5 x 8 5 216 x 216 mm with a 8 205 mm depth Cores are designed and manufactured by Fantech to withstand extreme temperature variations FILTERS Two 2 Washable Electrostatic Panel Type Air Filters 8 9 216mm x 8 203mm x 0 125 8mm CONTROLS Unit is designed to accommodate the whole series of Fantech HRV controls DEFROST preset defrost sequence is activated at an outdoor temperature of 23 5 C and lower During the defrost sequence the fresh air is interrupted momentarily and indoor air is allowed to recirculate in the exchanger to maximize the effectiveness of the defrost strategy The unit then returns to normal operation until the next defrost sequence SERVICEABILITY Core fil
24. rds install ceiling mounted diffuser or grilles so as not to directly spill the supply air on the occupant eg Over sofa Turn down the HRV supply speed A small duct heater 1kw could be used to temper the supply air Placement of furniture or closed doors is restricting the movement of air the home supply air is ducted into furnace return the furnace fan may need to run continuously to distribute ventilation air comfortably Balanced HRV Note minimal frost build up is expected on cores before unit initiates defrost cycle functions Have HVAC contractor balance the HRV Tape and seal all joints any holes or tears made in the outer duct covering Ensure that the vapor barrier is completely sealed ELECTRICAL CONNECTIONS jaued 59996 S8JIM E 10549 S 2 9 aue d 9149590 y juo JO 0 in E 7 5 S9JIM Jr DIVTJTVNVM YURID SOM P EE 3 jeisipiunuaq ZI mur un Hi 12 Jeduunf apow o3 dn nn TTL 1501 WO SN BYNUIW S WT E E CGL O l MW l gt 1919 1 e iE CEU 9 48 ESR 2 gt Ha tj umoys 10u 4 13 JO S40
25. return Additional source points may be drained from if e Building Codes and Combustion designed properly or installed on a separate Fantech fan bath kit to ventilate additional areas Fantech bath kits are Appliance Installation Codes do not listed below and are ideal for both new construction and retro fit allow location of return air grilles or any opening such as a breathing tee Fantech bathroom kits for supplemental exhaust in an enclosed room with spillage sus e PB100 H F 100cfm per fan ceptible combustion appliances e PB190 190cfm per fan e PB230 2 230cfm per fan e PB230 H F 2 230cfm fan e he fresh air inlet from the HRV needs e PB230 HV FV 2 230cfm per fan to respect a minimum e PB370 2 370cfm per fan distance from the furnace return drop e PBW110 H F 110cfm per fan to ensure proper air mixing and tem perature at the furnace core See fur nace manufacturer for appropriate specifications 8 INSTALLATION EXAMPLES Fully Dedicated System suggested for new construction Stale air drawn from key areas of home bathroom kitchen laundry Fresh air supplied to main living areas DIRECT CONNECTION of the SUPPLY AIR STREAM to the FURNACE COLD AIR RETURN Stale air drawn from key areas of home Partially Dedicated System Stale air drawn from key areas of home bathroom Fresh air supplied to main living areas via the forced air system NOTES 1 Furnace blower may be required to operate when H
26. s manual may not be exactly like unit purchased these illustrations amp imag es are for examples only 1 cfm 0 47189 l s 1 Vs 3 6 m3 hr TABLE OF CONTENTS TECHNICAL DATA VHR 704R ee es 3 INSTAULATION PTT 5 Mounting tne UNE Location amp 6 su eer cee Peg bees eee done pe ee eae eee oon Flow Balancing 10 OPERATION 11 Modes Or Operaio Y Runde Ebo bec KORG dew ened 11 Optional Remote 5 12 MAINTENANCE 1 0 RR RR RR RR RR RR RR RR ee 13 TROUGLESAOOTING oe ee 14 ELECTRICAL CONNECTIONS es m atat dox cut Eon m maiia konnte 15 sizing Example for maximum airflow normally required HRVs are typically sized to ventilate the whole house at a minimum of 0 35 air changes per hour To calculate simply take the square footage of the house including basement and multi ply by the height of the ceiling to get cubic volume Then divide by 60 and multiply by 0 35 Example SQFT of House 1100 Basement 1100 Total SQFT 2200 Height of ceiling x 8 Cubic volume 17600 60 Maximum airflow required CFM 293 x 103 Always consult your local code for sizing requirements in your
27. steps to adjust the Exhaust Air Out damper if needed 2 Before taking the reading make sure that the magnehelic gauge is level and at Refer to the flow measuring station s chart to determine your unit s airflow velocity e avoid airflow turbulence and 12 incorrect readings the PER airflow velocity should ee be measured steel EE ducting a minimum of ie 12 300 mm from the unit or elbow and before any transition Measuring and Balancing Airflow with a Measurement and Balancing System The following procedure is designed for measuring airflow and balancing an HRV based ventilation system Step 1 Prepare the house e Air vapor barriers must be complete e Fireplace dampers windows and doors closed e Clothes dryers and other large exhaust devices must be off Step 2 Prepare the system e Ventilation system must be complete including grilles and registers e Check that filters are installed and clean e All system dampers set to operating positions fully open for new installations Check that intake and exhaust hoods are clear Check that the HRV drain trap 15 full of water In cold weather check that HRV is defrosted and not in defrost mode Turn HRV fans on high speed Step 3 Taking measurements e Ensure measuring gauge 15 level and secure Magnehelic or slope manometer cannot be hand held e Zero gauge as required e Connect hoses to high and low ports of g
28. ters motors and drain pan can be easily accessed through latched door Core conveniently Slides out on our new easy glide core guides 10 250mm of clearance is recommended for removal of core DUCT CONNECTION 5 125mm Oval plastic duct connections integrated with balancing damper and balancing port DRAIN 1 2 18mm OD outside diameter drain spout provided entire bottom of unit covered by pan WARRANTY Limited lifetime on aluminum core 7 year on motors and 5 year on parts Dimensions amp Airflow All units feature three foot plug in power cord with 3 prong plug Stale Air Stale Air 22 4 569 mm To Outside From Inside 24 5 546 mm Fresh Air Fresh Air From Outside To Outside e Continuous ventilation mode of supply and exhaust airstreams e 10 254mm of clear ance is recommended for removal of core zl e Y d Ventilation Performance EXT STATIC NET SUPPLY GROSS AIR FLOW PRESSURE AIR FLOW SUPPLY EXHAUST 1R Net Supply amp Net Exhaust Pa 2n x 848 25 50 75 100 125 150 cfm l s n x 0 47 Energy Performance SUPPLY NET POWER SENSIBLE APPARENT TEMPERATURE AIRFLOW CONSUMED RECOVERY SENSIBLE EFFEC 3 TET WATTS EFFICIENCY TIVENESS Heating 0 32 25 52 34 67 69 0 32 30 64 44 59 7 0 30 35 75 44 59 66 25 13 30 63 42 67 73
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