Lifebreath 120ERV User's Manual
Contents
1. REMOTE DFR2 mm 3 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 HRV CONTROL BOX DEFROST DETAIL LEGEND o m HIGH VOLTAGE 12V LOW VOLTAGE 1 ul l AUT FIELD INSTALLED ROSE VEN TRANSFORMER INTERFACE 1 o z 12V LOW VOLTAGE RELAY CONTACTS 4 l 1 5 PIN 1 SPARE PIN2 ORANGE I PIN 3 RED PIN 4 SPARE 1 1 BLACK 120V nol ee ee 25 POWER SUPPLY WHITE GREEN N O N C an con AUTO TRANS ral E rel Iv E E N C COMMON N O L LL Lp ee ro NEUTRAL SPARE LINE FAN O P mS T LT PEE k E SEE HU DEFROST Sju u DETAIL gt gt 1 gt2. 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 avoid 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 Application Illustrations HRV Option 2 Simplified Installation for HRV Return Return Method e itis mandatory that the air handler blower A WARN l NG run continuously or HRV operation be 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 zeoe gt Return Air rm Unit is normally balanced on 4 40 1m MINIMUM gt 8 915 mm min HIGH speed with air handler Outdoors recommended blower ON xU Exhaust Air to Outside x aC qu Fresh Air From Outside gt gt c A Fresh Air to Building K Field supplied
3. HRV must be balanced e Fresh air supplied to main living areas of home Outdoors f e Sx Exhaust Air To Outside OAK Fresh air to house main living areas bedrooms living room rec room etc Fresh Air From Outside STALE AIR from various parts of home i e bathrooms if required kitchens if required Field supplied Balancing Damper optional Unit is normally balanced on HIGH speed with air handler blower ON 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 HAV 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 16 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 cen
4. TOP VIEW EXHAUST AIR FROM BUILDING FRESH AIR Nc EXHAUST Fo TO BUILDING FRESH AIR AIR FROM BUILDING FROM OUTSIDE FRESH AIR FROM OUTSIDE EXHAUST AIR TO OUTSIDE SERVICE CLEARANCE FROM BOTTOM OF UNIT IS MINIMUM 3 0 ALL DUCT CONNECTION COLLARS ARE 5 DIAMETER Option 2 Duct Configuration Dimensions inches FRESH AIR FROM OUTSIDE FRESH AIR EXHAUST AIR FROM TO OUTSIDE EXHAUST AIR N FROM BUILDING f TOP VIEW OUTSIDE EXHAUST AIR FROM BUILDING FRESH AIR TO BUILDING SERVICE CLEARANCE FROM BOTTOM OF UNIT IS MINIMUM 3 0 ALL DUCT CONNECTION COLLARS ARE 5 DIAMETER HANGING STRAPS X EXHAUST AIR TO OUTSIDE HANGING FRESH AIR TO BUILDING PLUG IN CONNECTOR FOR CONNECTING TO REMOTE ELECTRICAL BOX FRESH AIR TO BUILDING PLUG IN CONNECTOR FOR CONNECTING TO REMOTE ELECTRICAL BOX EXHAUST AIR TO OUTSIDE Installation Instructions The RNC120F model can be setup in two different airflow configurations as illustrated in the engineering data sec tion of the manual Because of this it is extremely important that the unit be connected properly The remote Electrical Box Power Supply Fan Connection A Fan Connection B OPTION 1 Standard Duct Configuration FRESH AIR FROM OUTSIDE EXHAUST AIR FROM BUILDING TOP VIEW THERMISTOR MUST BE INSERTED INTO GROMMET LABELLED THERMISTOR LOCATION FOR STANDARD DUCT CONFIGURATION FRESH AIR
5. 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 remote controls the dehumidistat or the fan timer should be made by a quali fied service technician Low voltage wires from the remote controls 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 Self Test The ventilator 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 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 at
6. To install the clean core a first mount the bottom flange of the core guide into the bottom H 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 6mm d 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 e rotate core clips to lock core in place NOTE Core will appear to stick out from cabinet approxi mately 1 8 3mm This is designed this way so that the access door will fit tight against the core 27 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 You 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 Pay special attention to the drain pan and ensure water flow path is not blocked 8 Cleaning the Fans Fans may accumulate dirt causing an imbalance and or excessive vibration of t
7. BLACK Black to peHumipistat Black GREEN LED DRIVE GREEN GROUND Circuit Board Terminal Strip Remote Dehumidistat Part No 99 130W Red to Red RED 12V ORANGE OBCS Black Black to Black DEHUMIDISTAT GREEN LED DRIVE RECIRCULATE GREEN GROUND Circuit Board Terminal Strip 20 Minute Timer shown in a Decora cover plate RED 412V ORANGE OBCS BLACK DEHUMIDISTAT GREEN LED DRIVE Red to Red Black to Black Green LED Drive to Green GROUND Circuit Board DEHUMIDISTAT Remove factory installed jumper when installing this control Factory installed 8 jumper A ATTENTION 2040 ON OFF Dehumidistat Part No 99 2040 RED Red to Red O 7 range to ORANGE BLACK DEHUMIDISTAT GREEN LED DRIVE RECIRCULATE LQ o sow Fan GREEN GROUND VENTILATION DEHUMIDISTAT EE Circuit Board Terminal Strip Crank Timer Part No 99 101 Off 10 30 60 a gt 50 40 Controls will use 2 3 or 4 lead 20 gauge wire Note the number of leads required for each control refer to the above illustrations 18 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
8. Balancing Damper optional Cool Air Return f Air NOTES Handler 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 connection should be upstream of the supply air connection to prevent exhausting any fresh air 4 Weather hood arrangement is for drawing purposes only Six feet 2m minimum separation required High efficiency filter 18 inches 460mm above grade minimum or above anticipated snow level or electronic air cleaner 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 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 Application Illustrations HRV Option 2 Fully Dedicated System for HRV e Staleair drawn from key areas of home bathroom kitchen laundry A WARNING
9. a s u Llc tr tr e VDR2 oF Ki K2 K3 K4 8 VDR3 FACTORY AX RECEPTACLE RECEPTACLE ORANGE FAN B FANA EO INSTALLED L JUMPER BLACK DEHUMIDISTAT VDR1 GREEN e ro sx Ss aca REMOTE LQ Semo FUTURE USE BLUE DFR2 DERG O come P3 THERMISTOR 3505 CR1 DEHUMIDISTAT INTERNAL DEHUMIDISTAT IF APPLICABLE 120 VOLT POWER SUPPLY CORD 120 VOLT POWER SUPPLY CORD CAPACITOR CAPACITOR 21 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 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 rm 1r 1r 1AUTO TR ej rs fe pm I po p L Ei T2 NEUTRAL SPARE LINE FAN TM Lr LL INI ASNA v e VDR1 BLACK Og LN ow EN e Ele pam BLUE r3 LQ coms RED P3 THERMISTOR P2 DEHUMIDISTAT HIGH VOLTAGE 12V LOW VOLTAGE Furnace FIELD INSTALLED LOW VOLTAG
10. be A WAR N 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 Outdoors Unit is normally balanced lt lt Exhaust Air to Outside EE SN HIGH speed with air handler blower ON a B 40 1m MINIMUM Field supplied Balancing Damper optional Return Air AE Fresh Air to Building Fresh Air From Outside gt lt d Cool Air 7 7 Return 2 3 915 mm min recommended Air NOTES Handler 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 connection should be upstream of the supply air connection to prevent exhausting any fresh air 4 Weather hood arrangement is for drawing purposes only Six feet 2m minimum separation required us o do High efficiency filter 18 inches 460mm above grade minimum or above anticipated snow level or electronic airclean r 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 fou
11. box of HRV Amp rating 15 Standard LOW SPEED SETTING can be increased to medium low Off Standby Low or OFF HIGH speed operation is also available Note Effectiveness based on temp differential between the 2 airstreams DUCT CON N ECTIONS Efficiency takes into account all power inputs 5 duct connections with field selectable standard airflow or reverse airflow for limited room installations mE WEIGHT 42 Ibs 19 kg E SHIPPING WEIGHT 45 Ibs 20 5 kg OPTIONAL ACCESSORIES 99 132 20 Minute Fan Timer initiates high speed ventilation for 20 minutes 3 wire 20 gauge wire min 100 length 99 101 Crank Timer 99 116 Dehumidistat Ventilation Control Dehumidistat with ON OFF 99 130 Dehumidistat Control Dehumidistat 99 185 Weatherhoods Two 5 125mm c w 14 6mm mesh screen 99 2040 20 40 ON OFF Dehumidistat Sensible Efficiency thermal Latent Efficiency moisture Air Flow cfm 0 2 0 3 04 05 0 6 WARRANTY Static Pressure in w g Units carry a lifetime warranty on the heat recovery core and a five year replacement parts warranty All units conform to CSA and UL standards iue TOP VIEW HRA FRESH AIR EXHAUST TO BUILDING AIR FROM BUILDING All Duct Collars are FRESH AIR 5 diameter 127 mm FROM OUTSIDE EXHAUST AIR TO OUTSIDE BOTTOM OF UNIT IS MINIMUM 20 Date Contractor T
12. electrical control box contains two receptacles labelled Fan Connection A and Fan Connection B It is critical that the proper fan be plugged into the proper recepta cle Remote Electrical Box may be cabinet mounted near the unit Thermistor PLUG LABELLED A MUST BE PLUGGED INTO FAN CONNECTION A PLUG LABELLED B MUST BE PLUGGED INTO FAN CONNECTION B EXHAUST AIR TO OUTSIDE DRAIN ENSURING THAT THE END TO BUILDING CONNECTION PROTRUDES PAST THE INSULATION SECURE IN PLACE WITH PUTTY OPTION 2 Reverse Duct Configuration THERMISTOR MUST BE INSERTED INTO GROMMET LABELLED THERMISTOR EXHAUST AIR LOCATION FOR STANDARD DUCT FROM BUILDING CONFIGURATION ENSURING THAT THE END PROTRUDES PAST THE INSULATION SECURE FRESH AIR IN PLACE WITH PUTTY FROM OUTSIDE PLUG b WITH RK ee BUILDING PLUG LABELLED A MUST BE PLUGGED INTO FAN CONNECTION B PLUG LABELLED B MUST BE PLUGGED INTO FAN CONNECTION A FRESH AIR TOP VIEW EXHAUST AIR DRAIN TO OUTSIDE CONNECTION A ATTENTION Note Thermistor location for selected Airflow configuration If Thermistor is not properly located equipment failure and or property damage may result 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 static A
13. heat between the two airstreams It is easily Net supply air flow in cfm L s against external static pressure removed for cleaning or service ESP MOTORS AND BLOWERS external static pressure cfm L s Each Air stream has an independent motorized impeller 3 speed operation 120VAC Q 0 1 25 Pa 125 59 FILTERS 0 2 50 Pa 120 56 Washable air filters in exhaust and supply air streams 0 3 75 Pa 114 54 MOUNTING THE HRV 0 4 100 Pa 109 51 Four threaded inserts at corners of case designed to accept four reinforced polyester 0 5 125 Pa 106 50 straps that are supplied with the unit Q 0 6 150 Pa 99 47 DEFROST 0 7 175 Pa 94 44 Fan defrost system Fresh air motor turns off and Exhaust motor switches to high speed 0 8 200 Pa 89 42 to defrost core Sensible Effectiveness CASE 65 cfm 30 L s 32 F 0 C 72 Twenty gauge prepainted galvanized steel G60 for superior corrosion resistance Sensible Efficiency n Insulated to prevent exterior condensation Drain connection 1 12 OD 65 cfm 30 L s 32 F 0 C 55 Sensible Efficiency CONTROLS Unit is supplied with a remote HRV control box which can be conveniently located within HEROS SIS Ea E 19 3 0 of the HRV VAC 60HZ 120 HRV System Control WATTS Low speed 63 HRV defaults to LOW SPEED when plugged in HIGH SPEED option is accessible by WATTS High speed 150 connecting remote controls to designated terminals inside electrical
14. vary Place pitot tube a minimum of 18 from blower or elbows N 72 num X Outdoors Al Magnehelic gauge Note Duct connections may vary depending on model NOTE Apply use of balancing dampers as required 25 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 locate the grilles high on the walls or under the baseboards the occupant outdoor temperature extremely cold install ceiling mounted diffuser or grilles so as not to directly spill the supply air on the occupant eg over a sofa e turn down the HRV supply speed A small duct heater could be used to temper the supply air placement of furniture or closed doors is restricting themove ment of air in the home if supply air is ducted into air handler return the air handler fan may ne
15. E 22 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 The fan defrost HRV is equipped with an electronically controlled fan defrost system to remove frost that collects on the warm air side of the aluminum heat transfer sur faces of the heat exchanger core When the outside air temperature drops below 27 F 3 C defrost is activated which provides for an automatic defrost cycle During the automatic defrost cycle the fresh air supply is shut off while the exhaust fan continues to operate This allows the warm inside air to flow through the heat exchanger core melting frost accumulation After the defrost period the fresh air supply fan returns to the normal speed and fresh outside air continues to be drawn into the building Water from the melted frost coll
16. 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 weather hoods 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 weather hoods and the HRV Installing the Ducting Between the HRV amp Living Areas in the Home 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 fastened with screws rivets or duct sealant and wrapped with mastic
17. Models RNC120F 120ERV LIFESREA Z HEAT RECOVERY VENTILATORS HRVs INSTALLATION INSTRUCTION FOR HEAT RECOVERY VENTILATOR HRV Shipping and Packing List Package 1 of 1 contains 1 Assembled ventilator 1 Bag assembly containing 4 Hanging straps 1 Installation manual 1 Remote electrical control box 1 Bag containing sealant putty Required Tools Installation Tools 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 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 tin snips e large zip ties assorted screw drivers e fabric flexible duct Table of Contents electric drill Class I rated hammer mastic tape o e wire strippers alum foil duct tape Shipping and Packaging List nns 1 knife e zip ties Required TOOS isinisi rrr imt eR adea 1 e caulking gun 1 D drain hose 24 smoke pencil anth 1 Balancing Tools Ln 1 e Pitot Tube Balancing Kit Engineering Data 2 5 Case 8 ft vinyl tubing Pitot tube 9 9 magnehelic gauge 0 0 25 and Insta
18. ag Qty Supplier Project Quotes Engineer Submitted by Engineering Data Model RNC120F Option 1 Standard Duct Configuration Dimensions inches EXHAUST AIR FROM BUILDING HANGING AIR ain PROM Es BUILDING FRESH AIR v STRAPS AIR rani FROM OUTSIDE 2 SN BUILDING PLUG IN CONNECTOR i FOR CONNECTING TO gt REMOTE ELECTRICAL FRESH BOX FROM OUTSIDE Ns KA iE OUTSIDE FRESH AIR TO BUILDING EXHAUST AIR TOOUTSIDE DRAIN CONNECTION SERVICE CLEARANCE FROM 19 BOTTOM OF UNIT IS MINIMUM 3 0 ALL DUCT CONNECTION COLLARS ARE 5 DIAMETER Option 2 Reverse Duct Configuration Dimensions inches FRESH AIR FROM OUTSIDE FRESH AIR EXHAUST AIR TOP VIEW HANGING FROM TOOUTSIDE BUILDING OUTSIDE PLUG IN CONNECTOR FOR CONNECTING TO REMOTE ELECTRICAL BOX AIR FROM EXHAUST BUILDING FRESH AIR BUILDING EXHAUST AIR TO OUTSIDE FRESH AIR DRAIN TO BUILDING CONNECTION SERVICE CLEARANCE FROM BOTTOM OF UNIT IS MINIMUM 3 0 ALL DUCT CONNECTION COLLARS ARE 5 DIAMETER Engineering Data Model 120ERV HEAT RECOVERY VENTILATORS HRVs Latent Recovery Moisture Transfer Core The cross flow energy recovery core transfers heat and water vapor between the two air Performance i i Net supply air flow in cfm L s against external static pressure streams It is easily removed for cleaning and service ESP MOTORS AND BLOWERS exter
19. blower speed of HRV is too high lifestyle of occupants HRV air flow may be improperly balanced 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 Insulated Duct to the Outside incomplete vapor barrier around insulated duct e a hole or tear in outer duct covering e 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 Ring on drain nozzle sits properly look for kinks in line check water drain connections make sure water drains properly from pan 20 Minute Timer Not Working Wiring Faulty control Faulty circuit board 26 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
20. e 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 J ON Hs REMOTE du DFR2 mm DFR Figure 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
21. ects in the bottom of the drip pans and drains out through the bottom drain connections The defrost cycle repeats automatically until the air tem perature rises above 27 F 3 C 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 Cm REMOTE Com DFR3 OFF ON DFR3 on CT CWT 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 volume of air brought in from the outside must equal the volume of air exhausted by the unit If the air flow is not properly balanced then e The HRV may not operate at its maximum efficiency e negative or positive air pressure may occur in the house e The unit may not defrost properly e 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 cau
22. ed 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 multi plied by the cross sectional area of the duct being measured 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 8 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 common 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 literature sup plied with the Pitot tube Air Flow Balancing 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
23. ed to run continuously to distribute ventilation air com fortably 1kw Dehumidistat is not Operating improper connection to ventilator external low voltage is shortened out by a staple or nail check dehumidistat setting it may be on OFF check that the correct terminals have been used 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 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 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 Humidity Levels are too Low dehumidistat control set too low
24. equired kitchens if required Field supplied Balancing Damper f lt lt 3 min recommended optional Fresh Air to Building Cool Air Return Unit is normally balanced on HIGH speed with air handler blower ON High efficiency filter or electronic air cleaner 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 avoid 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 Application Illustrations HRV Option 1 Simplified Installation for HRV Return Return Method It is mandatory that the air handler blower AWARNING run continuously or HRV operation
25. ervice 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 The unit must be level for proper condensate drainage Sufficient clearance below the access door is required for servicing the air filters and core A minimum of 25 635mm clear ance is recommended so the door can be removed Four PVC reinforced polyester hanging straps are provided for hanging the HRV 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 ceiling making 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 strap 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 Requiremen
26. fter 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 e range top e stovetop fan e central vacuum system A CAUTION Lint dust or grease will collect in the HRV damaging the unit NOTE Connecting any of these to the HRV will invalidate your warranty 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 conveniently s
27. greater distances Weatherhood Clearances OUTSIDE CORNER 36 1m recommended min 36 1m recommended min 0 6 2m recommended min 18 460mm 460mm min AL Ms M SEM se INSIDE CORNER Suspending the Unit using the Provided Hanging Straps 77e FASTENERS supplied STRAPS AND SCREWS Unit is designed for supplied horizontal installation only as shown Using full length hanger straps is recommended for vibration control but can be shorter if required Note Illustration depicts unit suspended from wood floor joists If a different ceiling system is used securing straps to floor will be different Weatherhood Installation SCREEN side view COLLAR IS SUPPLIED TO ENSURE VAPOUR BARRIER IS 100 SEALED TO WALL PLATE 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 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 EXTERIOR 1 4 6 mm SCREEN WALL front view Installation Air Duct Design and
28. he 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 unplug the HRV and open the service door remove the core e use a small brush such as a toothbrush or pipe cleaner and insert first 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 vacuum and wipe Before attempting this task thought should be given to having a qualified service technician complete the service work Maintenance Record Note It is important to maintain this product regularly to ensure optimal performance Date Maintenance Performed Contractor 511 McCormick Blvd 270 Regency Ridge Suite 210 London Ontario N5W 4C8 Dayton Ohio 45459 T 519 457 1904 T 937 439 6676 9001 F 519 457 1676 F 937 439 6685 BRANDS INC Email nutech lifebreath com Website www lifebreath com REGISTERED 28
29. llation Instructions 6 mounting plate Clearances amp 7 or e Pitot Tube with instructions Installation tnter nth 7 10 and Digital Manometer with resolution of Application 5 11 16 0 0 25 must read to 1 100ths of an inch adis Remote Control 17 Optional Accessories e 20 Minute Fan Timer Wiring the Controls S essensies 18 Wall Mounted Dehumidistat EG 19 e Weather hood Kit Round Diffuser Sli 20 4 100mm Wiring Diagrams sesseeen 21 5 125mm 6 150 Interlocking HRV to 22 8 200mm Air Flow Balancing store 24 25 Kitchen Grille may be requir d by code for dichen applications Troubleshooting entrer et een eoe 26 contains removable grease filter Maintenance essesseeeenem emen 27 eG LEAVE FOR HOMEOWNER Kos 000 7 NOTE Due to ongoing research and product development specifications ec 08 ratings and dimensions are subject to change without notice Engineering Data Model RNC120F HEAT RECOVERY VENTILATORS HRVs THERMALLY CONDUCTIVE PATENTED ALUMINUM CORE Performance The cross flow heat recovery core transfers
30. ly 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 RETURN AIR DUCT FOR AIR HANDLER Installation 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 saunas etc have uniq
31. 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 imbalance 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 remove filters C rinse with water or a combination of mild soap and water Do not clean in the dishwasher d to re assemble place clean filter s wet or dry back into their positions against the core and return clips to their original position slide core back into its original position 3 Clean Core Twice a Year 8 open access door b rotate keeper clips and 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 clean core f install the clean filters Note Core installation label on the outer end of the core
32. mm 5 125mm 6 150mm 8 200mm AIR FLOW SUPPLY AIR FLOW EXHAUST Round Diffusers E 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 The HRV has a condensate pan and drain spout built into the door Construct a P Trap by creating a loop in the drain This creates a trap which will hold some conden sate and prevent odours from being drawn up the hose and into the fresh air supply of the HRV P Trap HRV only A CAUTION Drain trap and tubing MUST be below bottom of door with 1 4 per foot downwards slope away from unit Note Secondary drain pan may be required to protect from condensate leakage Application Illustrations HRV Option 1 Partially Dedicated System for HRV e Stale air drawn from key areas of home bathroom kitchen laundry A WARNING HRV must be balanced e Freshair 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 Return Air lt lt Exhaust Air to Outside Y gt STALE AIR from various parts of home i e bathrooms if r
33. n 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 13 Application Illustrations HRV Option 2 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 Return Air ETUR Exhaust Air to Outside xe Y 3 min recommended Fresh Air From Outside 7 Al ATs gm Cool Air Return STALE AIR from various parts of home i e bathrooms if required kitchens if required Field supplied nm Balancing Damper Unit is normally balanced on HIGH speed optional with air handler blower ON High efficiency filter or electronic air cleaner 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
34. nal static pressure cfm L s Each Air stream has an independent motorized impeller 3 speed operation 120VAC 0 1 25 Pa 113 53 FILTERS 0 2 50 Pa 110 52 Washable air filters in exhaust and supply air streams 0 3 75 Pa 103 49 MOUNTING THE ERV 0 4 100 Pa 99 47 Four threaded inserts at corners of case designed to accept four reinforced polyester straps 0 5 125 Pa 96 45 that are supplied with the unit 0 6 150 Pa 89 42 CASE 0 7 175 Pa 86 41 Twenty gauge prepainted galvanized steel G60 for superior corrosion resistance Insulated 0 8 200 Pa 81 38 to prevent exterior condensation Cooling Mode 50 cfm 24 L s 95 F 35 C CONTROLS Sensible Effectiveness 62 Unit i lied with a remote ERV box which can be conveniently located within 3 of th See Transfer pria ERU supplied with a remote ich c e conveniently located withi e Total Efficiency 449 Heating Mode 50 cfm 24 L s 32 F 0 C ERV System Control Sensible Effectiveness 65 ERV defaults to LOW SPEED when plugged in HIGH SPEED option is accessible by con a 38 t oe otal Efficiency 56 necting remote controls to designated terminals inside electrical box of ERV VAC sore 320 Standard LOW SPEED SETTING can be increased to medium low Off Standby Low or OFF HIGH speed operation is also available WATTS Low speed 63 DUCT CONNECTIONS WATTS High speed 150 5 duct connections with field selectable standard airflow o
35. nd 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 draw defrost air from a room with a naturally aspirated appliance i e furnace hot water heater gas dryer stove fire place etc 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 Application Illustrations HRV Option 1 Fully 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 main living areas of home Outdoors CETUR Exhaust Air To Outside Ed Y a STALE AIR from various parts p Field supplied Balancing Damper optional i e bathrooms if required kitchens if required y Fresh Air From Outside Fresh air to house main living areas bedrooms living room rec room etc Unit is normally balanced on HIGH speed with air handler blower ON 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 HAV 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 clea
36. of three 20 gauge low voltage wire Connect up to 4 on 100 ft 91 m wire max Mounts in a 2 x 4 box Touch Pad The Touch Pad initi speed 20 Minute Status Lights The 20 Minute Status Light indicates high speed operation is activated ates high operation 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 ATTENTION Only one main control can be installed on your system Remote Dehumidistat PART NO 99 130 White The Remote Dehumidistat activates high speed ventilation when the indoor humidity 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 m factory I installed m jumper when installing this control Factory installed g jumper a Factory installed jumper Dehumidistat Ventilation Control Part No 99 116 412V Orange to
37. ons are not installed in the duct system Procedure should be performed with the HRV on high speed 24 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 provide 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 downstream 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 0 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 com ing out of the branch of the Pitot is connected to the low pressure or reference side of the gauge Insert the Pitot tube into the duct pointing the tip into the air flow For general balancing 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 reading on the gauge Then damper that air flow back to match the lower reading from the other duct The flow should now be balanc
38. 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 the same size or larger than the duct connection collar 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 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 Grilles that diffuse the air comfortab
39. r reverse airflow for limited room Amp rating 1 5 installations Sensible Efficiency thermal Latent Efficiency moisture WEIGHT 42 Ibs 1 9 kg SHIPPING WEIGHT 45 Ibs 20 5 kg Note Effectiveness based on temp differential between the 2 airstreams OPTIONAL ACCESSORIES Efficiency takes into account all power inputs 99 132 20 Minute Fan Timer initiates high speed ventilation for 20 minutes 3 wire 20 gauge wire min 100 length 3 High Speed 2 Medium Low Speed 99 101 Crank Timer 1 Low speed 99 116 Dehumidistat Ventilation Control Dehumidistat with ON OFF 99 130 Dehumidistat Control Dehumidistat 99 185 Weatherhoods Two 5 125mm c w 1 4 6mm mesh screen 99 2040 20 40 ON OFF Dehumidistat WARRANTY Units carry a lifetime warranty on the heat recovery core and a five year replacement parts warranty Air Flow cfm 02 0 3 0 4 0 5 0 6 Static Pressure in w g TOP VIEW FRESH AIR All units conform to CSA GR EXHAUST TO BUILDING E AIR FROM and UL standards ARAL All Duct Collars are E 5 diameter 127 mm FRESH AIR FROM OUTSIDE EXHAUST AIR TO OUTSIDE SERVICE CLEARANCE FROM 19 BOTTOM OF UNIT IS MINIMUM 3 0 Date Contractor Tag Qty Supplier Project Quotes Engineer Submitted by Model 120ERV Engineering Data Option 1 Duct Configuration Dimensions inches
40. se 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 Read the Application Warning in Clearances amp Requirements section of this manual WARNING Ensure balanced air flow in HRV Excessive negative pressure may also cause the back drafting of vented combustion equipment 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 4 Unitis on HIGH speed 5 Airflow 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 to match the lower reading 7 Return unit to appropriate fan speed for normal operation 8 Afield 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 stati
41. tral 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 the circuit board DIP Switches Refer to Mode DIP Switch Settings 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 Dehumidistat 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 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
42. ts e Atleast 6 2 m from the ventilation air intake At least 18 460mm above ground or above the depth of expected snow accumulation e Atleast 3 1 m away from the corner of the building Atleast away from 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 Installation 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 When installing the weather hood 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 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
43. ue 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 This grille includes a removable 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 The Round Diffuser is available in 4 100
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