Tradewins Furniture RNC10 User's Manual
Contents
1. Y AIR FLOW E SUPPLY T Round AIR FLOW P _ EXHAUST Diffusers yy The Round Diffuser is available in 4 100mm 6 150mm 8 200mm Drain Connection HRV Only During a defrost cycle the HRV may produce some con densation This water should flow into a nearby drain or be taken away by a condensate pump A CAUTION The HRV and all condensate lines must be installed in a space where the temperature is maintained above the freezing point or freeze protection must be provided The HRV cabinet has prepunched holes for the drain see below Insert the drain spout through the hole in the drain pan Do not forget the O ring which seals each spout to the pan REMEMBER TO HAND TIGHTEN ONLY the washer and lock nut which hold the drain spout in place Construct a P Trap using the plastic tee connector Cut two lengths of hose and connect each piece to an end of the T fitting then connect the other ends to the two drain spouts Position the T fitting to point upward andconnect the drain line Tape or fasten base to avoid any kinks This creates a trap which will hold some condensate and pre vent odors from being drawn up the hose and into the fresh air supply of the HRV P Trap HRV only DRAIN HOSE PLUMBING DRAIN POUT SPON SPOUT ZIP TIE 1 2 1D TEE CONNECTOR DRAIN HOSE a TO DRAIN HARD PIPE PLUMBING Note Secondary drain pan may be required2. 2 DIP Switch Settings for Standby When using a Remote Control Device that has an ON OFF Switch This DIP Switch Setting can be adjusted when using a system control that has an ON OFF switch refer to Remote Control Devices in this manual STANDBY is achieved when the Remote Control Switch is in the OFF position The Dehumidistat and Timers will initiate high speed ventilation regardless of the ON OFF switch posi tion when this DIP switch configuration is used Figure 2 gt ON Hs m REMOTE mm DFR2 7 DFR3 A ATTENTION Figure 2 may not meet building code conformance in certain geographical areas Check with your local building authority Increasing Low Speed to Medium Low The ventilator automatically operates on its lowest speed when plugged in or switched on This setting is factory supplied from an autotransformer with two selectable low speeds To switch to a continuous medium low speed an installing contractor must interchange the red and blue wires from the autotransformer inside the electrical box Whether or not this change is made the HRV will only be able to access a single selected low speed High speed is available with the use of optional remote controls connected to the appropriate terminals inside the electrical box Wiring Diagrams RNC3 WIRING DIAGRAM LEGEND HIGH VOLTAGE 12V LOW VOLTAGE AUTO TRANSFORMER INTERFACE RELAY CONTACTS FIELD INSTALLED 12V LOW VOLT
3. Recirculation Switch will toggle from continuous low speed ventilation to recirculation mode closes the fresh air damper and circulates the building air The Dehumidistat Dial will initiate High Speed ventilation when the indoor humidity level exceeds the set point regardless position of the RECIRC Switch This control also has an ON OFF Switch and a Dehumidistat Dial refer to The ON OFF Switch and The Dehumidistat Dial descriptions Recirculation Switch DN Dehumidistat Dial ON OFF Switch Remote Dehumidistat PART NO 99 130 White The Remote Dehumidistat activates high speed ventilation when the indoor humidty level exceeds the set point Dehumidistat Dial Timer is the best selection however the crank timer will be nec essary if only 2 lead low voltage wires are present Crank Timer PART NO 99 101 Connects to RED and BLACK termi nals Use a two 18 gauge low voltage wire Mounts in a 2 x 4 box The crank timer provides a solution to installing a system where only 2 wires are present for the timers Crank Dial Rotate the dial for up to 60 minutes high speed opera tion Wiring the Controls Remove factory installed we jumper when installing this control Factory jumper d I L4 installed ORANGE Mm OBCS BI Black to Black DEI AT GREEN LED DRIVE Factory installed jumper Dehumidistat Ventilation Control DVC RED Red to Red Qo BEI Orange t
4. Ring on drain nozzle sits properly look for kinks in line check water drain connections make sure water drains properly from pan Wiring Faulty control Faulty circuit board 20 Minute Timer Not Working 22 disconnect external controls and run unit through self test If the unit runs through self test successfully then the circuit board is okay check wiring connection make sure wires are connected to proper terminals test 20 Minute Timer press and hold the button for 10 seconds then release The unit should run on high speed and then return to normal operation when the button is released Maintenance 1 Inspect Exterior Hoods at least once a month Make sure exhaust and fresh air supply hoods are not blocked or restricted by leaves grass or snow In winter it is especially important to make sure snow is not blocking the hoods or that frost has not built up on the wire mesh bird screen WARNING Blockage of hoods may cause an imbal ance 2 Clean Air Filters Twice a Year The standard filters equipped with your HRV are remov able and washable a simply open access door and slide core out b c remove filter clips once clips are removed filters can be taken off the core to be rinsed with water or a combination of mild soap and water Do not clean in the dishwasher to re assemble place clean filter s wet or dry back into their positions against the core and return clips to t
5. Supplier Project Quotes Engineer Submitted by TW RNC95 2 0107 Engineering Data HRV RNC10 TATTA AQ A THERMALLY CONDUCTIVE PATENTED ALUMINUM CORE Performance vi certified The cross flow heat recovery core transfers heat between the two air streams It is easily removed Net supply air flow in cfm L s against external static pressure for cleaning or service E S P MOTORS AND BLOWERS external static pressure cfm L s Each air stream has one centrifugal blower driven by a common PSC motor Q 0 1 25 Pa 177 83 deis ee F Q 0 2 50 Pa 164 77 MOUNTING ere and supply air streams 0 3 75 Pa 156 73 Four threaded inserts at corners of case designed to accept four PVC reinforced polyester straps a Se 190 Pa en that are supplied with the unit SOS aes Fa 123 58 DEFROST 0 6 150 Pa 100 47 Damper defrost system defrosts automatically as the outdoor temperature falls 0 7 175 Pa 38 18 CASE Max Temperature Recovery 78 Twenty gauge prepainted galvanized steel G60 for superior corrosion resistance Insulated to Sensible Effectiveness prevent exterior condensation Drain connections two 1 2 12mm OD 67 cfm 32 L s 32 F 0 C 76 WEIGHT Sensible Efficiency 63 Ibs 28 7 kg 67 cfm 32 L s 32 F 0 C 66 SHIPPING WEIGHT Sensible Efficiency 67 Ibs 30 4 kg 68 cfm 32 L s 13 F 25 C 60 CONTROLS HRV System Control VAC 60HZ 120 HR
6. and trace them completely to puncture protective film underneath Then cut the solid tabs between the slits using tin snips or side cutters and remove the knock out plate If any protective film still blocks the opening remove it now In order to make the RNC95 as space efficient as possi ble the INDOOR supply and return ports are converted from round to oval shape Overall size of the port remains the same Simply bend a standard duct fitting to the cor rect shape and attach to the oval port using the same method as for a round port RNC95 Air Flow Stale air enters the FRONT RIGHT side port The air will pass down the front half of the core then up the back half of the core and out the RIGHT REAR port Fresh outdoor air will enter the LEFT REAR port and pass down the back half of the core It will then pass up the front half of the core and out the LEFT FRONT port This unique configuration allows the air to actually travel through the core twice making the RNC95 almost as effi cient as a double core unit Round port bent to oval ors D d 6 Hy diameter d Same Circumference 1 A 1 H 1 vn 1 5 1 E 3 1 1 Fo 1 r y 4 D D Clearances and Requirements A WARNING 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 sta
7. electronically controlled damper defrost mechanism The defrost timer is activated when the outside temperature drops below 27 F 3 C A motor driven damper door mechanism closes off the sup ply air from ouside allowing the exhaust air to recirculate through the unit After the defrost period the damper oper ates in the opposite direction to reopen the fresh air port Defrost cycle repeats until the temperature again rises above 27 F 3 C Lengthening the run time may result in ice buildup on the core Defrost Cycle DIP Switch Settings Defrost DIP Switch Settings located on the circuit board can be adjusted to increase the unit s run ventilation time The three minute defrost time cannot change Factory Setting 3 minute defrost time 17 minute run time Option 1 3 minute defrost time 25 minute run time Option 2 3 minute defrost time 30 minute run time gt ON gt ON gt ON HS HS HS REMOTE REMOTE Cm REMOTE Com DFR3 OFF DFR3 ON DFR3 on LC LC SW1 SW1 SW1 Lengthening the run time may result in ice build up on the core Air Flow Balancing It is necessary to have balanced air flow in an HRV The vol ume of air brought in from the outside must equal the volume of air exhausted by the unit If the air flow is not properly bal anced then The HRV may not operate at its maximum efficiency A negative or positive air pressure may occur in the
8. remove moist air as effectively as possible use of a washroom bath room fan for short periods will remove additional moisture timer or fan can be added to washroom bathroom exhaust on humid days as the seasons change some condensation may appear but the home s air quality will remain high with some HRV use increase speed of the HRV dehumidistat control set too low blower speed of HRV is too high lifestyle of occupants HRV air flow may be improperly balanced Humidity Levels are too Low set dehumidistat higher decrease HRV blower speed humidity may have to be added through the use of humidifiers have a contractor balance HRV air flow HRV and or Ducts Frosting up HRV air flow is improperly balanced malfunction of the HRV defrost system Note minimal frost build up is expected on cores before unit initiates defrost cycle functions have HVAC contractor balance the HRV ensure working properly Condensation or Ice Build Up in incomplete vapor barrier around insulated duct Insulated Duct to the Outside hole or tear in outer duct covering tape and seal all joints tape any holes or tears made in the outer duct covering ensure that the vapor barrier is completely sealed Water in the bottom of the HRV drain pans plugged improper connection of HRV drain lines HRV is not level drain lines are obstructed HRV heat exchange core is not properly installed ensure O
9. to match the lower reading Return unit to appropriate fan speed for normal operation 3 A A field supplied balancing damper for the stale air side is required for system balancing Balancing Procedure The following is a method of field balancing an HRV using a Pitot tube which is advantageous in situations when flow sta tions are not installed in the duct system Procedure should be performed with the HRV on high speed 20 The first step is to operate all mechanical systems on high speed which have an influence on the ventilation system i e the HRV itself and the air handler if applicable This will pro vide the maximum pressure that the HRV will need to overcome and allow for a more accurate balance of the unit Drill a small hole in the duct about 3 16 three feet down stream of any elbows or bends and one foot upstream of any elbows or bends These are recommended distances but the actual installation may limit the amount of straight duct The Pitot tube should be connected to a magnehelic gauge or digital manometer capable of reading from O to 0 25 in 0 62 Pa of water preferably to 3 digits of resolution The tube coming out of the end of the Pitot is connected to the high pressure side of the gauge The tube coming out of the branch of the Pitot is connected to the low pressure or refer ence side of the gauge Insert the Pitot tube into the duct pointing the tip into the air flow For general bala
10. 6676 F 519 457 1676 F 937 439 6685 9 001 OX BRANDS INC Email nutech lifebreath com Website www lifebreath com REGISTERED
11. AGE FAN MOTOR DETAILS POWER SUPPLY e 1 MOTOR AUTO TRANS E zl E E re E N C COMMON N O 4 NEUTRAL SPARE LINE FAN O P al bk Je Je Gei Gel Lei CAPACITOR I I SEE I DEFROST i DETAIL DIRECT MOUNTED CAPACITOR Sieen LEO E DEFROST DETAILS owa DEHUMIDISTAI Model RNCS Only ds NON PLUG IN FUNCTIONAL SEH FUTURE USE BLACK TERMINALS PIN 1 RED PIN 2 ORANGE BI DIRECTIONAL BINS BLACK DAMPER MOTOR TIN ASBPARE DEHUMIDISTAT PCB PLUG IN 12 PLUG IN CONNECTOR BLACK INTERNAL PIN 1 BLACK DEHUMIDISTAT PIN 2 ORANGE IF APPLICABLE BI DIRECTIONAL PIN 3 RED DAMPER MOTOR PIN 4 SPARE WALL MOUNTED DEHUMIDISTAT 20 MINUTE FAN TIMER DVC Remove factory installed jumper on circuit board DEHUMIDISTAT Black to Black Dehumidistat Red to Red 12V Red to Red 12V Black to Black Dehumidistat r Red to Red 12V Green to Green LED Drive Orange to Orange OBCS Black to Black Dehumidistat 98 RNC3 001 INSHRV 17 0104 Interlocking HRV Operation to an Airhandler Furnace Blower When using the Interface relay contacts to initiate blower operation on a fur nace certain thermostats will initiate the outdoor cooling condenser when R and G are closed Use this wiring configuration to prevent the Interface relay contacts from initializing the condenser unit This problem can occur
12. MODELS RNC95 RNC10 RNC20 NDS HEAT RECOVERY VENTILATOR INSTALLATION INSTRUCTION FOR HEAT RECOVERY VENTILATOR HRV Shipping and Packing List Package 1 of 1 contains 1 Assembled ventilator 1 Bag assembly containing 2 Drain spout assemblies HRV units only 4 Hanging straps 1 Installation manual Required Tools Installation Tools e tin snips e large zip ties e assorted screw drivers fabric flexible duct electric drill class I rated hammer e mastic tape wire strippers e alum foil duct tape e knife e zip ties e caulking gun e 1 2 D drain hose smoke pencil Balancing Tools e Pitot Tube Balancing Kit Case 8 ft vinyl tubing Pitot tube magnehelic gauge 0 0 25 and mounting plate e Pitot Tube with instructions and Digital Manometer with resolution of 0 0 25 must read to 1 100ths of an inch Optional Accessories e 20 Minute Fan Timer Wall Mounted Dehumidistat e Weather hood Kit Round Diffuser 4 100mm 6 150mm 8 200mm Kitchen Grille may be required by code for kitchen applications contains removable grease filter Seton HVI Pa d CERTIFIED Su AARIS conforms to UL Standaras Application Heat Recovery Ventilators HRV are designed to provide fresh air while exhausting an equal amount of stale air The HRV is equipped with an aluminum core The device uses the stale air that is being exhausted to
13. V defaults be LOW idisse when AS in que SES e is accessible by connecting WATTS Low speed 63 remote controls to designated terminals insi e electrica ox o WATTS High speed 125 Standard LOW SPEED SETTING can be increased to medium low A i Se Off Standby Low or OFF HIGH speed operation is also available E i OPTIONAL ACCESSORI ES Sensible Efficiency thermal Latent Efficiency moisture 99 101 Crank Timer Note Effectiveness based on temp differential between the 2 airstreams Efficiency takes into account all power inputs 99 116 Dehumidistat Ventilation Control Dehumidistat with ON OFF 99 130 Dehumidistat Control Dehumidistat 99 132 20 Minute Fan Timer 3 wire 20 gauge wire min 100 length max Modu Low Spent 99 186 Weatherhoods Two 6 150mm c w 1 4 6mm mesh screen 99 2040 20 40 ON OFF Dehumidistat All units conform to CSA and UL standards WARRANTY Units carry a 15 year warranty on the heat recovery core and a five year replacement parts warranty Manufacturer s Data Air Flow cfm Dimensions HRV inches mm 0 1 02 0 3 0 4 0 5 0 6 0 7 0 8 Static Pressure in w g FRESH AIR FROM cursed L All Duct Connections 6 150mm DEFROST SS DAMPER TO OUTSIDE tT 7 x DEFROST Be PORT i BLOWERS j S 2 FILTERS 7 NOTE 29 cl n Front clearance of r 25 inches 635 mm Qo n is recommende
14. at the thermostat because the Y termi nal is connected to the G terminal internal to the stat When R and G are closed at the furnace by dehumidistat or relay 24 Volts is sent to G at thermostat 24 Volts is then sent through Y which will initiate outdoor condenser E si ma FEH EZ AUTO R el e Je sl y psp r 1 ELE uu bie dri mm NEUTRAL SPARE LINE FAN O P mojm E Lo LL Je L Je Lo Ki 8 K4 l FACTORY F a er Lo INI ASNA dv v e CH O Ama CC TI OA ow x E orm Pa ez eps BLUE r3 LQ coms RED P3 THERMISTOR P2 DEHUMIDISTAT HIGH VOLTAGE 12V LOW VOLTAGE Furnace FIELD INSTALLED MX LOW VOLTAGE Dehumidistat Operation HRV only The optional HRV remote controls include a dehumidistat which controls humidity levels during the heating season The control has a selector knob with set points ranging from 20 to 80 relative humidity RH Most people are comfortable when indoor relative humidity levels are in a range from 30 to 45 Defrost Operation The dehumidistat switches the ventilator to high speed when the moisture level in the building exceeds the desired setpoint The dehumidistat switches the HRV back to low speed ventilation when the humidity has been reduced below the setpoint The dehumidistat should only be used during the heating season It must be set to OFF position throughout the rest of the year A CAUTION Damper Defrost The damper defrost HRV has an
15. condition the fresh air as it is being brought in These instructions are intended as a general guide and do not supersede local codes in any way Consult authorities who have jurisdiction before installation Table of Contents Shipping and Packaging List essssssss 1 Hedgulr d TO0ls estet tete d iter tret Deest terts 1 elle Le EE 1 cU ITEM 1 Engineering Dala eeen 2 4 RNC95 Specifications and Airflow s e 5 Clearances amp PHeouirements 6 TI e EE 6 9 Application Illustrations 2 0 cceceeeeeeeeeeeneeeeeeenees 10 12 Lee EE 13 Remote Control Devices 14 Wiring the Controls sseeeeeeen 15 CUAL 16 Wiring Did Grains icc cerei en Eege Eege pee Dentes 17 Interlocking HRV to Fumace 18 Air Flow Balancing eene 20 21 Troubleshooting eoe ic banc Ire reete reete idet enin tees 22 Maintenance isch eru tut ecu tese aeta e eege 23 LEAVE FOR HOMEOWNER NOTE Due to ongoing research and product development specifications TW 01 ratings and dimensions are subject to change without notice 0307 Engineering Data HRV RNC95 THERMALLY CONDUCTIVE PATENTED ALUMINUM CORE Performance vi certified The cross flow heat recovery core transfers heat between the two air streams Net supply air flow in cfm L s against external static pressure It is easily removed for cleaning or service E S P MOTORS AND BLOWERS external static
16. ction should be upstream of the supply air connection to prevent exhausting any fresh air High efficiency filter 4 Weather hood arrangement is for drawing purposes only Six feet 2m minimum separation required or electronic air cleaner 18 inches 460mm above grade minimum or above anticipated snow level 5 Due to the differences in pressure between the HRV and the equipment it is being connected to the HRV s air flow must be confirmed on site using the balancing procedure found in the installation manual A WARNING Defrost air port needs to be drawn from clean area without combustion appliances To avoid backdrafting of combustion products never A CAUTION Weather hood arrangement requires a minimum of 6 2m separation and a minimum of 18 460mm clearance above grade or anticipated snow level draw defrost air from a room with a naturally aspirated appliance i e furnace hot water heater gas dryer stove fire place etc Fully Dedicated System for HRV e Staleair drawn from key areas of home bathroom kitchen laundry A WA R N d N G HRV must be balanced e Fresh air supplied to main living areas of house Outdoors C Stale Air To Outside lt lt zi Fresh Air From Outside gt N STALE AIR from various parts of home Fresh air to house i e bathrooms if required kitchens if required main living areas b
17. d A CAUTION backdrafting of combustion products never draw defrost air from a room with a naturally aspirated appliance i e furnace hot water heater gas dryer stove fire place etc Weather hood arrangement requires a minimum of 6 2m separation and a minimum of 18 460mm clearance above grade or anticipated snow level Simplified Installation for HRV Return Return Method e Itis mandatory that the air handler blower AWARNING run continuously or HRV operation be A WAR N I NG interlocked with the air handler blower HRV must be balanced e Check local codes authority having jurisdiction for acceptance DIRECT CONNECTION of both the HRV SUPPLY AIR STREAM and EXHAUST AIR STREAM to the AIR HANDLER COLD AIR RETURN Unit is normally balanced on HIGH speed with air handler blower ON i Return Air Outdoors 40 1m MINIMUM lt 3 915 mm min recommended Stale Air To Outside imm EC Cool Air Return Stale Air From Building Fresh Air To House Field supplied Air Balancing Damper Handler optional NOTES 1 Air handler blower must operate when ventilation from HRV is required The air handler should be set to run continuously or interlocked with HRV 2 A minimum separation of 40 inches 1m is required between the two direct connections 3 The exhaust air conne
18. d 1 for servicing unit STALE AIR FRESHAIR Y FROM INSIDE 7 EN INSIDE SSES gc e i i 14 3 4 i r SC BEE E 375 i CONDENSATE DRAINS BALANCING DAMPER ett D VE Cu ua c us VILL sep asss cwemseuswes CERTIFIED Date Contractor Tag Qty Supplier Project Quotes Engineer Submitted by 3 0107 Engineering Data HRV RNC20 THERMALLY CONDUCTIVE PATENTED ALUMINUM CORE The cross flow heat recovery core transfers heat between the two air streams It is easily removed for cleaning or service MOTORS AND BLOWERS Each air stream has one centrifugal blower driven by a common PSC motor FILTERS Washable air filters in exhaust and supply air streams MOUNTING THE HRV Four threaded inserts at corners of case designed to accept four PVC reinforced polyester straps that are supplied with the unit DEFROST Damper defrost system defrosts automatically as the outdoor temperature falls CASE Twenty gauge prepainted galvanized steel G60 for superior corrosion resistance Insulated to prevent exterior condensation Drain connections two 1 2 12mm OD WEIGHT 63 Ibs 28 7 kg SHIPPING WEIGHT 67 Ibs 30 4 kg CONTROLS HRV System Control HRV defaults to LOW SPEED when plugged in HIGH SPEED option is accessible by connecting remote controls to designated terminals inside electrical box of HRV Standard LOW SPEED SETTING can be increased to medium low Off Standby Low or OFF HIGH speed operation is also ava
19. depth of expected snow accumulation At least 3 1 m from the inside outside corner of the building Do not locate in a garage attic or crawl space Local code may require greater distances Weatherhood Clearances OUTSIDE CORNER 36 1m recommended min 36 1m recommended min 1 6 2m 1 recommended min 18 460mm min 18 460mm min INSIDE CORNER Suspending the Unit using the Provided Hanging Straps WIDE HEAD NAILS not supplied STRAPS AND 7 SCREWS supplied Front clearance of 25 inches 635 mm sE is recommended P for servicing unit Unit is designed for horizontal installation only as shown Using full length hanger straps is recommended for vibration control but can be shorter if required Weatherhood Installation SCREEN side view COLLAR IS SUPPLIED TO ENSURE VAPOUR BARRIER IS 100 SEALED TO 12 galvanized pipe supplied 1 Thermal Collar slides over galvanized sleeve of Weatherhood 2 Fasten Thermal Collar to Belt 3 Slide the Insulated Flexible Ducting over the Weatherhood s galvanized sleeve and fasten it to the Thermal Collar 4 Hood is hinged to allow for easy access for cleaning of bird screen BENE EXTERIOR 1 4 6 mm SCREEN WALL front view A CAUTION Weatherhood arrangement requires a minimum of 6 2m separation and a minimum of 18 460mm clearance above the higher
20. eams d ETT A Efficiency takes into account all power inputs 99 116 Dehumidistat Ventilation Control Dehumidistat with ON OFF 99 130 Dehumidistat Control Dehumidistat 99 132 20 Minute Fan Timer 3 wire 20 gauge wire min 100 length max 99 186 Weatherhoods Two 6 150mm c w 1 4 6mm mesh screen 99 2040 20 40 ON OFF Dehumidistat 99 RECIRC Recirculation Control All units conform to CSA and UL standards All units conform to CSA and UL standards WARRANTY Units carry a 15 year warranty on the heat recovery core and a five year replacement parts warranty 5 High Speed Air Flow cfm Dimensions RNC95 inches mm e 0 2 0 3 0 4 Static Pressure in w g Hanging 1 18 5 i 470 mm i 1 straps 4 1 knockout for side mounting of EXHAUST return port 6 round collar converted to oval Threaded inserts 4 at corners EXHAUST Stale Air to outside 5 round collar SUPPLY Fresh air from outside 5 round collar Removable Heat Recovery n EXHAUST Core d Return air SUPPLY from building Fresh air to building round conv to oval collar Choice of port location Knockouts on top and side of unit use 1 only 6 round conv to oval collar supplied minimum 18 inches 459 mm required for service access Drain Pan Drain spout FRONT SIDE TOP i S LE CERTIFIED WII HR AD Date Contractor Tag Qty
21. edrooms living room Unit is normally balanced on HIGH speed rec room etc with air handler blower ON Field supplied Balancing Damper optional NOTES 1 Weather hood arrangement is for drawing purposes only 6 2m minimum separation required 18 460mm above grade minimum or above anticipated snow level 2 The HRV air flow must be confirmed on site using the balancing procedure found in the installation manual A WARNING Defrost air port needs to be drawn from clean area without combustion appliances To avoid AN CAUTION backdrafting of combustion products never draw defrost air from a room with a naturally Weather hood arrangement requires a minimum aspirated appliance i e furnace hot water of 6 2m separation and a minimum of 18 460mm heater gas dryer stove fire place etc clearance above grade or anticipated snow level The HRV unit should be plugged into a standard designat ed 120VAC electrical outlet with a ground The outlet should be serviced by a separate 15 amp 120V circuit An extension cord should not be used with this appliance A qualified service technician should make any required electrical connections Remote Control Connections Prior to connecting remote devices it is advisable to run self test on the HRV ERV Low voltage connections between the emote controls the dehumidistat or the fan timer should be made by a quali fied service technician Low voltage wires from the remote cont
22. ened with screws rivets or duct sealant and wrapped with mastic or a quality duct tape to prevent leakage Mastic is preferred but if duct tape is used we recommend aluminum foil duct tape Galvanized ducting from the HRV to the living areas in the house is recommended whenever possible although flexi ble duct can be used in moderation if necessary To avoid possible noise transfer through the duct system a short length approximately 12 inches or 300mm of non metallic flexible insulated duct should be connected between the HRV and the supply exhaust duct system The main supply and return lines to from the HRV must be 6 inches 150mm minimum Branch lines to the individual rooms may be as small as 4 inches 100mm but 5 inch 125mm lines are preferred All ducts running through attics and unheated spaces must be sealed and insulated to code Fresh Air Ducting In applications that do not include an air handler fresh air should be supplied to all bedrooms and living areas excluding bathrooms kitchen and utility areas Grilles should be located high on a wall or in ceiling locations A WARNING Include a short length of fabric flex duct or other non metallic connector in the Fresh Air to Building hard ducted line in order to keep the HRV separately grounded electrically from the air handler This will avoid a possible shock hazard to service people if a short to ground develops in one of the devices Gril
23. eniently service the unit Typically the HRV would be located in the mechanical room or an area close to the outside wall where the weather hoods will be mounted If a basement area is not convenient or does not exist a utility or laundry room may be used Attic installations are not normally recommended due to A the complexity of work to install B freezing conditions in the attic C difficulty of access for service and cleaning The HRV unit must be installed in a horizontal position as shown in the illustration below The unit should be sus pended using the provided hanging straps If necessary the unit may be installed on a platform however the cabi net should be isolated from the platform to prevent vibration transmission The unit must be level Sufficient clearance at the front of the access door is required for servicing the air filters and core A minimum of 25 635mm clearance is recommended so the door can be opened Four PVC reinforced polyester hanging straps are provided for hanging the HRV from the basement floor joists Suspending the Unit The hanging straps should be attached to the unit at the top end corners mounting screws are already located on the HRV case Securely fasten the other end of the straps to the floor joists with wide head nails not supplied mak ing sure the UNIT IS LEVEL The straps are designed to reduce the possibility of noise resonance or harmonics therefore using the full length of the st
24. gh speed 182 Amp rating 1 4 32 F 0 C 67 32 F 0 C 60 Sensible Efficiency thermal Latent Efficiency moisture Note Effectiveness based on temp differential between the 2 airstreams Efficiency takes into account all power inputs 3 High Speed 2 Medium Low Speed 1 Low speed Manufacturer s data Air Flow cfm 0 2 0 3 0 4 0 5 0 6 0 7 Static Pressure in w g es nul 4 HVI S HRAL Date Contractor Tag Qty Supplier Project Quote Engineer Submitted by 0107 RNC95 Specifications The RNC95 Heat Recovery Ventilator HRV has been designed to allow the installer to choose between two pos sible positions on the cabinet for the INDOOR EXHAUST return from building port Illustrations in this manual show standard side mounted port location The same specifi cations apply to both RNC95 setups regardless of which port position is selected Variable Port Location SIDE MOUNTED PORT standard location TOP MOUNTED PORT alternate location Variable Port Location Installation Model RNC95 only The exhaust return port collar is not factory installed Installer may choose either side mounted or alternate top mounted port by simply removing one of the two knock out plates and attaching a port collar supplied To remove knock out plate insert a utility knife into the knock out slits
25. he occupant install ceiling mounted diffuser or grilles so as not to directly spill the supply air on the occupant eg over a sofa outdoor temperature extremely cold e 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 themove ment of air in the home e if supply air is ducted into air handler return the air handler fan may need to run continuously to distribute ventilation air com fortably Dehumidistat is not Operating improper connection to ventilator check that the correct terminals have been used external low voltage is shortened out by a staple or nail check dehumidistat setting it may be on OFF check external wiring for a short set the dehumidistat at the desired setting Humidity Levels are too High in Winter Condensation is appearing on the windows dehumidistat is set too high e lifestyle of the occupants moisture coming into the home from an unvented or unheated crawl space moisture is remaining in the washroom bathroom and kitchen areas condensation seems to form in the spring and fall HRV is set at too low a speed set dehumidistat lower avoid hanging clothes to dry storing wood and venting clothes dryer inside Heating wood may have to be moved outside vent crawl space and place a vapor barrier on the floor of the crawl space ducts from the washroom bathroom should be sized to
26. heir original position e 3 Clean Core Twice a Year slide core back into its original position a open access door b carefully grip ends of core and pull evenly outward core may be snug but will slide out of the channel c once removed from the cabinet remove filters d wash core in warm soapy water do not use dishwasher e install the clean filters f install clean core Note Core installation label on the outer end of the core To install the clean core first mount the bottom flange of the core guide into the bottom H channel approximately 1 4 6mm 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 H channel approximately 1 4 6mm 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 NOTE Core will appear to stick out from cabinet approximately 1 8 3mm This is designed this way so that the access door will fit tight against the core 23 4 Motors Maintenance Free 5 Drain condensate Line Clean Once a Year Inspect drain line drain spout and P trap for blockage mold or kinks Flush with warm soapy water and replace if worn bent or unable to clean 6 Clean Duct System if Required The duct system running to and from the HRV may accu mulate dirt Wipe and vacuum the duct once every year Y
27. house The unit may not defrost properly Failure to balance HRV properly may void warranty A CAUTION Ensure balanced air flow in HRV Excessive positive pressure may drive moist indoor air into the external walls of the building where it may condense in cold weather and degrade structural components May also cause key holes to freeze up Excessive negative pressure may have several undesirable effects In some geographic locations soil gases such as methane and radon gas may be drawn into the home through basement ground contact areas A WARNING Ensure balanced air flow in HRV ERV Excessive negative pressure may also cause the back drafting of vented combustion equipment Read the Application Warning in Clearances amp Requirements sec tion of this manual Prior to balancing ensure that 1 All sealing of the duct system has been completed 2 All of the HRV s components are in place and functioning properly Balancing dampers are fully open Unit is on HIGH speed Air flow in branch lines to specific areas of the house should be adjusted first prior to balancing the unit A smoke pencil used at the grilles is a good indicator of each branch line s relative air flow 6 After taking readings of both the stale air to the HRV duct and fresh air to the house duct the duct with the lower CFM L s velocity reading should be left alone while the duct with the higher reading should be dampered back
28. ilable OPTIONAL ACCESSORIES 99 101 Crank Timer 99 116 Dehumidistat Ventilation Control Dehumidistat with ON OFF 99 130 Dehumidistat Control Dehumidistat 99 132 20 Minute Fan Timer 3 wire 20 gauge wire min 100 length max 99 186 Weatherhoods Two 6 150mm c w 1 4 6mm mesh screen 99 2040 20 40 ON OFF Dehumidistat All units conform to CSA and UL standards WARRANTY Units carry a 15 year warranty on the heat recovery core and a five year replacement parts warranty Dimensions HRV inches mm FRESH AIR FROM curse L All Duct Connections 6 150mm DEFROST DAMPER L 3 STALE AIR TO OUTSIDE E Dee DEFROST SE PORT 7 i BLOWERS 7 NOTE 4 Front clearance of 25 inches 635 mm is recommended for servicing unit 1 1 1 ERESHAR Y o O INSIDE A i 33 5 8 i CONDENSATE DRAINS BALANCING DAMPER Performance Hvi certified Net supply air flow in cfm L s against external static pressure E S P external static pressure cfm L s 214 101 206 97 193 91 184 87 170 80 Q 0 1 25 Pa Q 0 2 50 Pa 0 3 75 Pa 0 4 100 Pa 0 5 125 Pa Q 0 6 150 Pa 155 73 Q 0 7 175 Pa 137 65 Max Temperature Recovery 69 Sensible Effectiveness 119 cfm 56 L s Sensible Efficiency 119 cfm 56 L s Sensible Efficiency 117 cfm 55 L s 13 F 25 C 60 VAC 60HZ 120 WATTS Low speed 70 WATTS Hi
29. les that diffuse the air comfortably such as the Round Diffuser are recommended 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 option al inline duct heaters are available for mounting in the supply duct work to add heat if required Direct Connection to Air Handler Duct System Should you wish to hard duct the fresh air from the HRV directly into the cold air return of the air handler remem ber to check the air flow balance of the HRV with the air handler fan both ON and OFF to determine that it does not imbalance the unit more than 10 Indirect Connection to Air Handler Duct System If permitted by local codes an indirect connection may be made between the HRV fresh air duct and the air handler return plenum The fresh air from the unit may be directed at a grille installed in the cold air return duct of the air han dler The fresh air outlet from the HRV should be no closer than 4 inches 100mm and no more than 12 inches 300mm from the grille FRESH AIR FROM HRV bw Eu Sei RETURN AIR DUCT FOR AIR HANDLER Stale Air Exhaust System The stale air exhaust system draws air from the points in the house where the worst air quality problems occur Stale air ducts should be installed in the bathroom kitchen and laundry room Applications such as green houses atriums swimming pools sauna
30. literature supplied with the Pitot tube Pitot Tube and Gauge Pitot Tube Air Flow Balancing Kit with magnehelic gauge Pitot tube hose and carry case Pitot tube High Pressure Side Low Pressure Side Placement of Pitot Tube HRV NOTE Graphic is for illustrative purposes only Duct connection ports may vary lt lt lt lt lt lt lt I V4 Place pitot tube a minimum of 18 from blower or elbows 21 0 D gt A Note Duct connections may vary depending on model Outdoors Field supplied Balancing Magnehelic Balancing Damper Damper NJ optional cA Eco NOTE Apply use of balancing dampers as required 21 Troubleshooting Symptom Cause Solution Poor Air Flow 1 4 6mm mesh on the outside hoods is plugged clean exterior hoods or vents filters plugged remove and clean filter core obstructed remove and clean core house grilles closed or blocked e check and open grilles dampers are closed if installed open and adjust dampers poor power supply at site have electrician check supply voltage at house duct is restricting HRV check duct installation improper speed control setting increase the speed of the HRV HRV air flow improperly balanced have contractor balance HRV Supply air feels cold e poor location of supply grilles the air flow may irritate e locate the grilles high on the walls or under the baseboards t
31. ncing it is sufficient to move the Pitot tube around in the duct and take an average or typical reading Repeat this procedure in the other supply or return duct Determine which duct has the highest air flow highest read ing on the gauge Then damper that air flow back to match the lower reading from the other duct The flow should now be balanced Actual air flow can be determined from the gauge reading The value read on the gauge is called the velocity pressure The Pitot tube comes with a chart that will give the air flow velocity based on the velocity pressure indicated by the gauge This velocity will be in either feet per minute or meters per second To determine the actual air flow the velocity is multiplied by the cross sectional area of the duct being mea sured This is an example for determining the air flow in a 6 duct The Pitot tube reading was 0 025 inches of water From the chart this is 640 feet per minute The 6 duct has a cross sectional area of 3 14 x 6 12 4 0 2 square feet The air flow is then 640 ft min x 0 2 square feet 128 cfm For your convenience the cross sectional area of some com mon round duct is listed below DUCT DIAM inches CROSS SECTION AREA sq ft 5 0 14 6 0 20 7 0 27 The accuracy of the air flow reading will be affected by how close to any elbows or bends the readings are taken Accuracy can be increased by taking an average of multiple readings as outlined in the
32. o I L ORANGE Orange Gs one BLACK Black to Black DEHUMIDISTAT GREEN LED DRIVE GREEN GROUND Circuit Board Terminal Strip Remote Dehumidistat Red to Red RED GROUND Circuit Board Terminal Strip 20 Minute Timer shown in a Decora Cover Plate Green LED Drive to Green RECIRCULATE LOW FAN GREEN GROUND Circuit Board Terminal Strip A ATTENTION DEHUMIDISTAT DEHUMIDISTAT Controls will use 2 3 or 4 lead 20 gauge wire Note the number of leads required for each control refer to the above illustration 2040 ON OFF Dehumidistat RED 12V ORANGE OBCS BLACK DEHUMIDISTAT Remove factory installed w jumper when installing this control Red to Red Orange to Orange Black to Black Circuit Board Terminal Strip Recirculation Control T VENTILATION DEHUMIDISTAT VENTILATION DEHUMIDISTAT Red to Red Remove factory e installed jumper gy Orange to when installing e range this control Black to Blacn Recirculate to Blue Circuit Board Terminal Strip Note Recirc for use with RNC95 only Crank Timer Factory Red to Red installed M Jumper m m Black to Black Circuit Board Terminal Strip 15 Self Test The ventila
33. of the grade or anticipated snow level Air Duct Design and Installation A well designed and installed ducting system will allow the HRV to operate at its maximum efficiency Always try to keep duct runs as short and straight as pos sible See Installation Diagrams for various installation options The inner and outer liners of the flexible insulated duct must be clamped to the sleeve of the weatherhoods as close to the outside as possible and the appropriate port on the HRV It is very important that the fresh air intake line be given special attention to make sure it is well sealed A good bead of high quality caulking preferably silicone sealant will seal the inner flexible duct to both the HRV port and the weather hood prior to clamping with a large zip tie To minimize air flow restriction the flexible insulated duct that connects the two outside weather hoods to the HRV should be stretched tightly and be as short as possible Twisting or folding the duct will severely restrict air flow See below for the recommended connection of flexible insulated ducts to the the outside weatherhoods and the HRV Installing the Ducting Between the HRV amp Living Areas in the House To maximize airflow in the duct system all ducts should be kept short and have as few bends or elbows as possi ble Forty five degree elbows are preferred to 90 elbows Use Y tees instead of 90 elbows whenever possible All duct joints must be fast
34. ou may wish to contact a Heating Ventilation company to do this 7 General Maintenance Twice a Year Wipe down the inside of the cabinet with a damp cloth to remove dirt bugs and debris that may be present 8 Cleaning the Fans Fans may accumulate dirt causing an imbalance and or excessive vibration of the HRV A reduction in the air flow may also occur In new construction this may result within the first year due to heavy dust and may occur periodically after that over time depending on the outdoor conditions e unplug the HRV and open the service door remove the core remove ducting metal and or flexible insulated type from the red and or blue ports which are connected immediately inline with the fan assembly usea small brush such as a toothbrush or pipe cleaner and insert first a through the large opening of the fan assembly and then b through the smaller opening in the end of the fan assembly e scrub individual fan blades until clean Avoid moving or damaging balancing flat weight clip is usually found on one or more of the fan blades e vacuum and wipe reassemble making sure ducting is reattached firmly and insulation and moisture barrier are sealed and taped Before attempting this task thought should be given to having a qualified service technician complete the service work 511 McCormick Blvd 270 Regency Ridge Suite 210 London Ontario N5W 4C8 Dayton Ohio 45459 T 519 457 1904 T 937 439
35. pressure cfm L s Each air stream has one centrifugal blower driven by a common PSC motor FILTERS Q 0 1 25 Pa 76 36 Washable air filters in exhaust and supply air streams 0 2 50 Pa 73 34 MOUNTING THE HRV Four threaded inserts at corners of case designed to accept four PVC reinforced polyester straps 0 3 75 Pa 70 33 that are supplied with the unit 0 4 100 Pa 66 31 DEFROST Recirculating defrost system 0 5 125 Pa 60 29 CASE Max Temperature Recovery 88 Twenty gauge prepainted galvanized steel G60 for superior corrosion resistance Insulated to Sensible Effectiveness prevent exterior condensation Drain connections two 1 2 12mm OD 60 cfm 28 L s 32 F 0 C 88 WEIGHT Sensible Efficiency 52 Ibs 23 6 kg 60 cfm 28 L s 32 F 0 C 75 SHIPPING WEIGHT Sensible Efficiency 56 Ibs 25 4 kg 62 cfm 29 L s 13 F 25 C 68 CONTROLS HRV System Control VAC 60HZ 120 HRV defaults to LOW SPEED when plugged in HIGH SPEED option is accessible by connecting WATTS Low speed 60 remote controls to designated terminals inside electrical SE of HRV WATTS High speed 150 Standard LOW SPEED SETTING can be increased to medium low Off Standby Low or OFF HIGH speed operation is also available Amp rannig 0 9 OPTIONAL ACCESSORI ES Sensible Efficiency thermal Latent Efficiency moisture 99 101 Crank Timer Note Effectiveness based on temp differential between the 2 airstr
36. rap between the HRV and the floor joists is recommended Weatherhood Location and Installation Weatherhood kit includes two fixed cover hoods with a 1 4 6mm mesh screen Exhaust Weatherhood Requirements e Atleast 6 2 m from the ventilation air intake At least 18 460mm above ground or above the depth of expected snow accumulation A CAUTION Unit must be installed level to ensure proper condensate drainage Due to the broad range of installation and operational conditions consideration must be given for the possibility of condensation forming on the unit or connecting ducting Objects below the installation may be exposed to condensate At least 3 1 m away from the corner of the building At least 3 away from gas meter electric meter or a walkway where fog or ice could create a hazard Not into a garage workshop or other unheated space When installing the weatherhood its outside perimeter must be sealed with exterior caulking Local code may require greater distances Intake Weatherhood Requirements Should be located upstream if there are prevailing winds from the exhaust outlet At least 6 2 m from the exhaust weather hood At least 6 2 m away from dryer vents and air handler exhaust medium or high efficiency furnaces A minimum of at least 6 2 m from driveways oil fill pipes gas meters or garbage containers swimming pools At least 18 460mm above the ground or above the
37. rols are connected to the HRV micro processor board A WARNING In order to prevent electric shock when cleaning or servicing the HRV it is extremely important to confirm the polarity of the power line that is switched by the safety disconnect switch The hot line black is the proper line to be switched To confirm the proper polarity use a voltmeter or test lamp to ensure there is no power after the switch when the door is open Check between that point and ground on the cabinet Always make sure that the HRV is properly grounded Remote Control Devices Optional Main Controls The amount of ventilation required in your home will fluctuate according to the activity level in the house Higher activity levels require more ventilation Main controls can be mounted in a central location of the home i e beside the furnace thermostat which will provide the user with complete control over their ventilation system from a conve nient location The ON OFF Switch The ON OFF Switch will turn the HRV ON or OFF Controls with an ON OFF switch can be modified to ON Standby by adjusting Ventilation Dehumidistat PART NO 99 116 The High Low Speed Switch initiates High or Low speed ventila tion This control also has an ON OFF Switch and a Dehumidistat Dial refer to The ON OFF Switch and The Dehumidistat Dial descriptions High Low Speed Switch Dehumidistat Dial ON OFF Switch 20 40 ON OFF Dehumidi
38. s etc have unique ventilation requirements which should be addressed with an isolated ventilation system Also the air handler return duct may be used to exhaust from In this method the exhaust air is not ducted back to the HRV with dedicated lines from bathrooms kitchens etc Instead the exhaust air is drawn out of the cold air return of the air handler The air handler blower must be run ning when the unit is operating for this system to be effective A CAUTION Do not mount exhaust grille within 4 1 2m horizontally from stove to prevent grease from entering HRV Balancing Dampers and Grilles Balancing dampers and or adjustable grilles should be used to balance the flow rates into and out of various rooms Grilles or diffusers should be positioned high on the wall or in the ceiling Kitchen exhaust grilles must never be con nected to a range hood They should be installed at least 4 feet 1 2m horizontally away from the stove A hinged 6 X10 150 X 250mm rectangular kitchen exhaust grille is available as part number This grille includes a remov able grease filter Canadian building codes require that kitchen grilles be equipped with washable filters Field supplied balancing dampers should be installed external to the unit to balance the amount of stale air being exhausted with the amount of fresh air being brought into the house Refer to Air flow Balancing sec tion Kitchen Grille REMOVABLE FILTER
39. stat PART NO 99 2040 The 20 40 Switch will toggle from continuous low speed ventila tion to an intermittent mode of 20 minutes fan ON in low speed and 40 minutes fan OFF The Dehumidistat Dial will initiate High Speed ventilation when the indoor humidity level exceeds the set point regardless position of the 20 40 Switch This control also has an ON OFF Switch refer to The ON OFF Switch descrip tion 20 40 Dehumidistat Switch enm Dial ON OFF Switch Optional Timers Timers should be present when the HRV is exhausting from specific locations i e bathrooms laundry rooms The 20 Minute 20 Minute Timer PART NO 99 132 Connects to RED BLACK and GREEN LED drive terminals Use a minimum of three 20 gauge low voltage wire Connect up to 4 on 100 ft 91 m wire max Mounts in a2x4 box 20 Minute Status Lights Touch Pad The 20 Minute Status Light indicates The Touch Pad initi high speed operation is activated ates high speed operation 14 the circuit board DIP Switches Refer to Mode DIP Switch Settings The Dehumidstat Dial Main controls feature a dehumidistat dial The dehumidistat is used to reduce high winter humidity levels The dehumidistat activates high speed ventilation when the indoor humidity level exceeds selected setting A ATTENTION Only one main control can be installed on your system Recirculation Control PART NO 99 RECIRC Note For use with RNC95 only The
40. tic After installation the compatibility of the two pieces of equipment must be confirmed by measuring the air flows of the ventilator by using the balancing procedure found in this manual It is always important to assess how the operation of any HRV may interact with vented combustion equipment i e Gas Furnaces Oil Furnaces Wood Stoves etc NEVER install a ventilator in a situation where its normal operation lack of operation or partial failure may result in the backdrafting or improper functioning of vented combustion equipment Installation Connecting Appliances to the HRV The following appliances should not be connected to the HRV e clothes dryer range top stovetop fan central vacuum system NOTE Connecting any of these to the HRV will invali date your warranty A CAUTION Lint dust or grease will collect in the HRV damaging the unit A WARNING Improper installation adjustment alteration service or maintenance can cause property damage personal injury or loss of life Installation and service must be performed by a qualified installer or service agency A WARNING Electric shock hazard Can cause injury or death Before attempting to perform any service or maintenance turn the electrical power to unit OFF at disconnect switch es Unit may have multiple power supplies Location Selection The HRV must be located in a heated space where it will be possible to conv
41. to protect from condensate leakage Application Illustrations HRV Partially Dedicated System for HRV e Staleair drawn from key areas of home bathroom kitchen laundry A WARNING HRV must be balanced e Fresh air supplied to return air duct of air handler DIRECT CONNECTION of the SUPPLY AIR STREAM to the AIR HANDLER COLD AIR RETURN Stale air drawn from key areas of home Outdoors eX Stale Air To Outside OK zi Return Air a B C S3 mn 5 B recommended Ba Fresh Air From Outside x N i i f Cool Air Return z li P STALE AIR from various parts of home i e bathrooms if required kitchens if required Unit is normally balanced on HIGH speed with air handler blower ON 3 Field supplied Balancing Damper optional High efficiency filter or electronic air cleaner Air Handler NOTES 1 Air handler blower may be required to operate when HRV is on to provide good air distribution 2 Weather hood arrangement is for drawing purposes only 6 2m minimum separation required 18 460mm above grade minimum or above anticipated snow level 3 Due to the differences in pressure between the HRV and the equipment it is being connected to the HRV air flow must be confirmed on site using the balancing procedure found in the installation manual A WARNING Defrost air port needs to be drawn from clean area without combustion appliances To avoi
42. tor will automatically initiate a self test sequence when power is applied Fan motor is cycled and then damper motor is cycled Duration Approximately 1 5 mins How much ventilation do I need During seasons when your windows and doors are closed winter and summer if air conditioned the HRV should operate continuously when the dwelling is occupied and either continuously or intermittently when not occupied Mode DIP Switch Settings For most installations the HRV will normally be set to oper ate continuously on low speed To suit various lifestyles the HRV offers a selection of operating modes Method of Operation Good intermittent operation at all times Better continuous operation during day or occupied conditions intermittent at night or unoccupied Best recommended continuous operation of both HRV and furnace air handler blower Figure 1 Factory DIP Switch Settings The factory setting of the DIP switches located on the cir cuit board provides continuous low speed ventilation Optional Remote Controls will initiate high speed ventila tion Remote controls with an ON OFF switch refer to Remote Control Devices in this manual will shut the entire sys tem down when the remote control is in the OFF position Changing the remote control from OFF to STANDBY can be achieved by Setting the DIP Switch as per Figure 2 Figure 1 gt ON is E REMOTE dum DFR2 mm DFR3 ml Figure
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