Lifebreath 150SP User's Manual
Contents
1. 3 Figure 1 Front View Schematics A Electric Defrost cla EE 4 B Damper Defrost 4 TOOLS REQUIRED Ma Fresh Air Supply System 5 Stale Air Return System 6 The following is a list of tools you may reguire for the installation of your Heat Recovery Ventilator Location of Ducts and Grilles 5 e Jigsaw Reciprocating Pencil l Es oe 66 Electrical Connections 7 Electric Drill Measuring Tape Air Flow Balanci Lan Knife Ir Flow Balancing 7 Robertson Duct Tape Installation Schematics screwdrivers e Hammer 2 amp 3 square Pliers Figure 4 Philips for straps Crimpers E aO a ir ad Snips Hand Shears FOUTE 5 iii metal and electrical box Other Installation Methods Figure 6 Direct Connection of the Supply Air Stream to the Furnace Cold Air Return 9 Figure 7 Direct Connection of both the HRV Supply Air Stream and Exhaust Air Stream to the For Technical Furnace Cold Air Return 9 Information Troubleshooting Your HRV EE 10 Call NUTECH Service Dept 519 457 1904 ENGINEERING DAT CORE Single engineered with aluminum for superior thermal conductivity meets the flam2. INSULATED FLEXIBLE DUCTING THERMAL COLLAR 1 Thermal Collar slides over galvanized sieeve of Weatherhood 2 Fasten Thermal Collar to Belt 3 Slide the insulated Flexible Ducting over the Weat galvanized sieeve and fasten it to the Thermal Collar 4 Hood is hinged to aliow for easy access for cleaning of bird screen Figure 2 Weatherhood Installation To avoid possible noise transfer through the ductwork system a short length approximately 12 in 30 cm of non metallic i e NUFLEX flexible insulated duct may be connected between the HRV and the supply exhaust ductwork system The use of TECHGRILLES from NUTECH as supply air diffusers and air exhaust covers are recommended They are efficient sound absorbing devices specifically designed for this installation If a regular style steel grille is used the pre ferred wall grille size is 5 X 12 in 13 X 30 cm and floor grille size is 4 X 10 in 10 2 X 25 cm Smaller grille sizes may restrict air flow grille installed in the cold air return duct of the furnace The fresh air supply outlet from the unit should be no closer than 4 in 10 2 cm and no further than 12 in 30 cm from the grille NOTE The grille in the cold air return duct must be at least 6 1 2 ft 2 m from the furnace if fossil fueled or as specified by local regulatory codes The use of balancing dampers and or adjustable grilles to balance the flow rates into various rooms
3. into the home through basement ground contact areas Radon is believed to be a cause of lung cancer As well an excessive negative pressure may cause the backdrafting of vented combustion equip ment if an adequate combustion air supply is not provided Read the Application Warning at the start of this manual EE A n Procedure A Six inch 15 cm diameter flow collars connected to an inclined or digital manometer magnehelic etc with a range of 0 to 25 in 0 to 62 5 Pa of water are recommended for accurate air flow measurements To avoid air flow turbulence and incorrect readings the flow stations should be located at a point at least ten duct diameters i e 6 in 15 cm duct requires 10 diameters X 6 60 150 cm away from the nearest valve or flow restriction Refer to HRAI installation manual This requirement applies to both the stale air to exchanger duct and the fresh air to house duct Prior to balancing make sure 1 All sealing of the ductwork system has been completed 2 All of the HRV components are in place and functioning properly Balancing dampers are fully open Unit is on HIGH speed Air flows 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 the fresh air to the house duct
4. AF EEN EE A A TOA AE a a iii m CENTRAL VENTILATION SYSTEMS INSTALLATION MANUAL Models 150SP 150MAX 200STD 200MAX APPLICATION WARNING It is always important to assess how the operation of any Heat Recovery Ventilator may interact with vented combustion equipment i e Gas Furnaces Oil Furnaces Wood Stoves etc NEVER install a Heat Recovery Ventilator in a situation where its normal operation including defrost function lack of operation or partial failure may result in the backdrafting or improper functioning of vented combustion equipment y SB fondi Do Not Attempt Installing Unit TI 70 Without First Reading Entire Manual 938 INTRODUCTION TABLE OF CONTENTS This Heat Recovery Ventilator HRV is designed to provide fresh air into the dwelling Tools Required na EER nee P 1 while exhausting an equal amount of stale air Engineering Data KA ME TN ili 2 During the winter months the incoming cold N sa f fresh air is warmed by utilizing the heat recov Deltost S uuu umu am ieri 2 ered from the stale air before it is exhausted to NE ar Location for Mounting the HRV 3 the outdoors During the summer months the cool outgoing stale air from the air conditioned The Ductwork System tile EED KERE 3 dwelling is used to cool the incoming fresh air A Outside Weatherhoods ARCA a 3 B Ducting from HRV to HoodsS
5. ce without operable windows etc and potentially basements NOTES Combustion 1 Fumace blower need not operate to provide good air distribution quality with this system or Electric 2 Should furnace blower be required to operate to help distribute supply air it may be A interlinked electrically low voltage with HRV for intermittent demand or B run continuously though electrical consumption of furnace blower should be considered 3 No separation requirements necessary between direct connection point and furnace 4 Air streams through HRV do not represent any particular model They may change in actual installation 5 Weatherhood arrangement is for drawing purposes only Six ft 6 minimum separation required Ten in 10 above grade minimum DIRECT CONNECTION of both the LIFEBREATH HRV SUPPLY AIR STREAM and EXHAUST AIR STREAM to the FURNACE COLD AIR RETURN Balancing damper in Unit is normally balanced on HIGH speed both air streams with furnace blower operating Outdoors NOTES 1 Furnace blower is required to operate when ventilation from HRV is required when HRV is running It may be A interlinked electrically low voltage with HRV for intermittent demand or B run continuously though electrical consumption of fumace blower should be considered 2 A minimum separation of 18 is required between the two direct connections 3 The exhaust air connection should be upstream of the su
6. d that a separate 15 amp 120 volt circuit be used WARNING n 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 whose control arm is located on the outside of the electrical control box area The hot line black is the proper line to be switched To confirm the proper polarity use voltme ter or test lamp to make sure there is no power after the switch when the door is open Check between that point and ground on the cabinet This must be done as occasionally some dwellings are improperly wired Always make sure the HRV is properly grounded AIR FLOW BALANCIN Itis necessary to have volume balanced air flows in an HRV The volume of air brought in from the outside must equal the volume of air exhausted by the HRV If the air flows are not properly balanced then e The HRV may not operate at its maximum efficiency A negative or positive air pressure may occur in the house The HRV may not defrost properly Failure to balance HRV may void warranty An 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 Also it may cause key holes to freeze up may have several undesirable side effects In some geographic locations soil gases such as methane and radon gas may be drawn
7. e spread and smoke developed classifications of the National Building Code MOTOR High efficiency PSC on all models FILTERS Washable air filters in exhaust and supply air streams BLOWERS Each of the two air streams has 1 centrifugal blower driven by a common motor When typically installed at 2 In WG the HRV delivers 150SP 140 CFM 150MAX 140CFM 200STD 195 CFM 200MAX 195 CFM CONNECTION DUCT SIZES Four 4 6 15 cm Diameter UNIT DIMENSIONS Length 31 0 775 mm Width 14 75 368 75 mm Height 19 0 475 mm Weight 71 lbs 32 kg Shipping Weight 73 lbs 33 kg MOUNTING HRV Four 4 10 24 10 5 mm threaded inserts at corners of case designed to accept four 4 PVC reinforced polyester straps supplied with unit CASE 20 gauge prepainted steel is insulated with a foil faced fibreglass duct liner where required to prevent exterior condensation CONTROLS e Lighted power switch e STD SP models have 3 speed LOW MED HIGH blower control e MAX models have 5 speed with Off position con trolled by autotransformer Defrost light indicates when defrost occurs This is automatic when outside condition drops below 5 C 23 F e 24 VAC low voltage override of speed control to HIGH speed e 150MAX 200STD and 200MAX have a built in dehumidistat automatically increases ventilation when RH humidity exceeds operators set point 2 CODES and STANDARDS All models are CSA approved All c
8. e switch is not operating Note minimal frost build up is expected on cores before unit initiates defrost HRV and or Ducts Frosting up HRV air flows improperly balanced Back draft dampers not installed or working when HRV is turned off cycle function e Malfunction with HRV s defrost system Balance HRV Install backdraft dampers Supply air feels cool HRV air flows improperly balanced Balance HRV Poor location of supply grilles Locate grilles high on walls or under baseboards Outdoor temperature extremely cold 558 l e If supply air is installed into return of furnace furnace fan may need to run continuously to distribute ventilation air comfortably Water in bottom of HRV Drain pans plugged e Improper connection of HRV s drain lines HRV is not level e Drain lines obstructed HRV heat exchange core not installed properly Ensure O Ring on drain nozzle sits properly e Look for kinks in line Check water drain connections Make sure water drains properly from pan Incomplete vapour barrier around insulated duct Tape all joints Ensure that vapour barrier is completely sealed Condensation or ice build up in insulated duct to outside HRV air flow improperly balanced Filters Core plugged up e 1 4 mesh on outside hoods plugged up House grilles closed Dampers closed e Poor pow
9. ed air furnace NOTE The installation schematics show a balancing damper on the supply duct leaving the unit This is installed to balance the supply of air from the unit Should you wish to hard duct the supply air directly into the cold air return of the furnace remember to check the air flow balance of the HRV with the furnace fan both ON and OFF to determine that it does not imbalance the HRV more than 10 Also it is advisable to include a short length of fabric flex duct or other non metallic connector in this hard ducted line in order to keep the HRV separately grounded electri cally from the furnace This will avoid a possible shock hazard to Service People if a short to ground develops in one of the devices STALE AIR RETURN SYSTEM The stale air return system is used to draw air from the points in the house where the worst air quality problems occur It is recommended that return air ducts are brought back from the bathroom kitchen and 6 laundry room Additional return air ducts from strategic locations i e greenhouse atrium swimming pool sauna etc may be installed Note that the installation schematics show balancing dampers and or adjust able grilles on all return air lines coming back to the unit These are installed to help balance the draw from the different areas of the house The damper located just prior to the Heat Recov ery Ventilator is provided to balance the stale air exhausted ou
10. er supply Improperly sized ducting e Under sized HRV e Improper speed control setting Malfunction with HRV Tape all joints Use proper air flow measuring equipment Open all grilles e Remove obstructions in duct s hoods and grilles Balance air flows Poor air flows 10 DATE PROJECT MECHANICAL CONTRACTOR NUTECH ENERGY SYSTEMS INC 511 McCormick Blvd London Ontario N5W 4C8 Phone 519 457 1904 Fax 519 457 1676 937
11. ersized ducting use of too many elbows tees bends etc Always try to keep duct runs as shortand straight as possible When in doubt about the airflow capacity of a duct s diameter always install the next larger size NOTE Fully insulated ducting with an integral vapour barrier must be used on all runs passing through unheated areas in order to avoid condensation problems and energy losses from the air streams We recommend NUFLEX from NUTECH ENERGY SYSTEMS INC Check local codes for required insulation values Four 6 in 15 cm ports on the HRV are for attachment to the ductwork system See Figure 1 for the function of these ports A The weatherhoods must have built in bird screens with 1 4 in 635 cm minimum mesh to preventforeign objects from entering into the ductwork Do not use smaller mesh as it will be very susceptible to plugging up Flappers and dampers at the vents must not be used as they will restrict air flow and often seize up The preferred location of the outside weatherhoods is no less than 6 ft 2 m apart from each other at least 18 in 46 cm above ground level e away from sources of contaminants such as automobile exhaust fumes gas meters garbage cans barbeques etc e not exposed to prevailing winds whenever reasonably possible The outside perimeter of the weatherhood must be caulked ELECTRIC DEFROST a yy NR RR RR RR PALLA RARI ee ele ele edele ele ese siele le
12. he basement floor joists The hanger straps should be attached to the unit atthe top end comers mounting screws already located on the HRV case Securely fasten the other end ofthe straps to the floor joists with wide head nails not supplied making sure unit is level The rubber straps are designed to reduce the possibility of noise resonance or harmonics therefore using the fulllength ofthe strap betweenthe HRV and the fioorjoists is recommended There are two prepunched holes in the bottom of the HRV through which the drain pan connectors will protrude once you place them as shown in Figure 1 They have been storedinsideto avoid breakage ofthe connection pointduring shipping Do not forget the O Ring which seals the connector to the pan REMEMBER TO HAND TIGHTEN ONLY the washer and lock nut which hold the drain connector in place See Figure 1 for proper placement of the drain age hose The drain line must be located in an area that is not subject to freezing and should be outletted into floor drain sink standpipe or condensate pump Make sure the drain line slopes down to provide proper condensate removal Should no fall be available a condensation pump may be used NOTE A P Trap should be made to prevent odours from being drawn in through drain line rr ere ce ced THE DUCTWORK SYSTEM A well designed ducting system will allow the HRV to operate at its maximum efficiency Air flow will be restricted by und
13. is recommended The TECHGRILLE available in 4 5 6 100 125 and 150 mm is highly recommended NOTE Do not use any louvered hoods with installation of LIFEBREATH HRV as this will restrict the required air flow The TECHGRILLE is a round fully adjust able grille which provides superior quiet air distribu tion See Fig 3 The fresh air supply from the HRV to the house can follow several installation strategies See Figures 4 and 5 fortwo installation schematics The installa tion schematic shown in Figure 4 has proven to be an excellent method for both retrofit and new home situa tions where a forced air furnace is available The installation schematic shown in Figure 5 is often installed in new or exisiting homes that do not have a forced air ducting system to distribute the fresh air throughout the house For Figure 5 fresh air should be supplied to all rooms but it is not required in those with exhaust points in them Supply air grilles may be floor or high wall mounted but should not be located in areas where the fresh air will cause an uncomfortable draft on the occupants TECHGRILLES diffuse cool air exceptionally well to avoid drafts Avoid installing supply air grilles in bathrooms or any other small room with significant air quality problems if it has an exhaust duct INSTALLATION FIGURE 6 In this method the supply air is ducted directly into the cold air return of the central forc
14. nterrupted unplugged then plugged back in or turned OFF then ON etc the unit initiates a defrost cycle The defrost L E D illuminates and the damper door operates for the pre set 4 5 minute approximate time interval This allows visual inspection of the operating components involved in the defrost cycle as they per form their function The Heat Recovery Ventilator must be located in a heated space where the surrounding air temperature does not fall below the freezing point This is to prevent freezing of the condensate lines It is also very important that the unit be mounted level horizontal in order that the proper condensate drainage can occur Failure to do so will void warranty Typically the HRV is positioned in the mechanical room or area close to the outside wall on which the weatherhoods will be mounted Remember it needs a 120 VAC outlet to plug into extension cords should not be used except if required to test unit on initial startup Ifa 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 complexity of work to prevent freezing while allowing access for service and cleaning Sufficient clearance to the frontofthe HRV is required for servicing ofthe air filters and exchange cores Aminimum of 25 in 625 mm clearance is recommended The four PVC reinforced polyester hanging straps supplied are for mounting the HRV to t
15. omponents are UL listed Model 200MAX is R2000 approved Model 200MAX is HVI Certified ELECTRIC DEFROST OPERATION OF ELECTRIC DEFROST MODELS 150SP 200STD These Models are equipped with an electric defrost element and a factory pre set automatic tem perature controller in the fresh air supply stream which work to defrost the heat exchange core as necessary The element will start to operate at about 5 C 23 F as set at the factory user adjustable and cycle ON and OFF until about 15 C 5 F at which time it is on until the temperature warms up i e warmer than 15 C 5 F OPERATION OF DAMPER DEFROST MODELS 150MAX 200MAX These Models have an electronically controlled damper defrost mechanism Ifthe outside temperature drops below 5 C 23 F the defrost timer is activated After waiting approximately 17 minutes during which time the core may experience some nominal frost build up the timer activates a motor driven damper door mechanism which opens the defrost port while at the same time closing off the supply air from outside After approximately 4 5 minutes the damper operates in the Opposite direction to close off the defrost port and reopen the fresh air at the supply port See Figure 1 The 17 minute wait time and 4 5 minute defrost cycle repeat until the temperature again rises above 5 C 23 F The defrost mechanism incorporates an easy to self test feature Each time power to the unit is i
16. portant 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 acousti cal sealant will seal the inner flexible duct to both the HRV port and the weatherhood prior to clamping To minimize air flow restriction the flexible insu lated duct that connects the two outside weatherhoods to the HRV should be stretched tightly and be as short as possible See Figure 2 for the recommended connection of flexible insulated ducts to both the outside weatherhoods and the HRV Ducting from the HRV to the different areas inthe dwelling is recommended to be galvanized metal when ever possible though flexible duct can be used in moderation if so desired WARMSIDE DUCTING General Main supply and return lines to from Heat Re covery Ventilator must be 6 in 15 cm minimum Branch lines to the individual rooms may be as small as 4 in 10 2 cm but 5 in 13 cm lines are preferred whenever possible To minimize airflow losses in the ductwork sys tem all ducts should be as short as possible and with as few bends or elbows as possible 45 elbows are preferred to 90 elbows whenever possible Use Y tees instead of 90 tees whenever possible All duct joints must be fastened with screws rivets or duct sealant and wrapped with a quality duct tape to prevent leakage We recommend aluminum foil tape WEATHERHOOD INSTALLATION BELT OF OUTSIDE WALL
17. pply air connection to prevent exhausting any fresh air 4 Air streams through HRV do not represent any particular model They may change in actual installation 5 Weatherhood arrangement is for drawing purposes only Six ft 6 minimum separation required Ten in 10 above grade minimum Forced Air Furnace Combustion or Electric TROUBLESHOOTING YOUR HRV Balance HRV e Set dehumidistat higher Humidity may have to be artificially added via humidifiers HRV air flows improperly balanced e Dehumidistat control set too low Lifestyle of occupants Humidity levels too low Balance HRV Set dehumidistat Cover pools hot tubs etc when not in use Avoid hanging clothes to dry storing wood and venting clothes dryer inside e HRV air flows improperly balanced e HRV undersized initially e Dehumidistat set too high HRV undersized to handle hot tub indoor pool etc Lifestyles of occupants e HRV not operating or malfunctioning Humidity levels too high Check 24V board on HRV to ensure unit able to jump to high speed Check external wiring for short e Check wall switch for proper connection e Improper connection to external 24V board e Improper connection of external low voltage wiring between HRV and remote switch External low voltage is shorted out by a staple nail etc Malfunction with 24V transformer in HRV Remot
18. siniese A ROI ee ee RR O O O POR RN ede ae De OR etes ee RR I 00000 00 090150 ee es III ee EE O O O OOOO DE O O A A RS O SO ET EE TEE EE ED STALE AIR TO OUTSIDE FRESH AIR FROM OUTSIDE 6 15cm STALE AIR FRESH FROM HOUSE HE TO HOUSE 6 15cm DRIP TRAY NUT AND WASHER FINGER TIGHTEN ONLY Figure la Models 150SP 200STD Front View Schematic T CONNECTION DAMPER DEFROST i BOSSO DIAZ FO 1014013220 0505000500 3050 0050545000 5000500 ee ee de ee erect RA oe ee slee eie ee ee age eel ese E II SG ee oe ae ee ee de ee Ge ee Po oe Pete ee ee ee ee ee n ele ele OSOS OOOO OS DS DOOD RR FRESH AIR FROM OUTSIDE DEFROST PORT STALE AIR FROM HOUSE DRIP TRAY STALE AIR TO OUTSIDE FRESH AIR TO HOUSE NUT AND WASHER FINGER TIGHTEN ONLY Figure 1b T CONNECTION Models 150MAX 200MAX DUCTING from Six inch 15 cm diameter insulated duct with an integral single piece vapour barrier should be used Duct must meet ULC Class 1 fire rating A minimum RSI value of insulation should be equal to 0 75 R4 or that of the local building codes The inner and outer liners of the flexible insu lated duct must be clamped to the sleeve of the weatherhood as close to the outside as possible and the appropriate portonthe HRV To keep the insulation and outer liner in place a clamp and duct tape must be used Itis very im
19. t of the house with fresh air supply enter ing the house We recommend the use of high duct mounted wall returns with grilles The exhaust air line from the kitchen should never be connected to a range hood Instead an exhaust air grille should be mounted high on the wall at least 4 ft 1 2 m horizontally away from the stove A flip up 8 x 10 rectangular kitchen grille with removable grease filter is available from NUTECH if desired The gyproc and studs of the wall can be used as a duct for high wall returns When using wall cavities this way they should be lined with either galvanized sheet metal or polyethylene check Local Codes The wall plate and the floor ply must be cut out to accept either ducting or the proper sized sheet metal boot INSTALLATION FIGURE 7 Inthis 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 central forced air furnace This method has become popular and provides good venti lation when installed in accordance with the noted instructions AIR FLOW EXHAUST Fig 3 TECHGRILLE Optional Schematic ELECTRICAL CONNECTIONS The models 150 200 series is a 3 prong 120 VAC plug in type if further wiring is required it is recom mended that a licensed electrician make all electrical connections It is very important that the unit be prop erly grounded It is recommende
20. the duct with the lower CFM velocity reading should be left alone while the duct with the higher reading should be dampered back to match the lower reading E Return unit to appropriate fan speed for normal operation SRO 1 remind ig indirect conection of the supply air stream to the furnace cold air return Adjustable stale air return Stale air exhaust Fresh air supply D Re Fresh air from HRV to the rest of the house N CELE Note direct connection may be used See Fig 6 Adjustable fresh Adjustable dampers for Adjustable stale air return balancing air flow in and air return out of the house Stale air exhaust hood Note N N 1 No forced air furnace 2 Fresh air distribution through lt Fresh air exchanger ductwork system supply hood Flexible insulated ducting with a vapour barrier OTHER INSTALLATION METHODS DIRECT CONNECTION of the SUPPLY AIR STREAM to the FURNACE COLD AIR RETURN of LIFEBREATH HRVs Balancing damper in Unit is normally balanced on HIGH speed both air streams with furnace blower OFF Outdoors iy PDE LP S A ADA PDA V NS 2 52 tots 3 P N ee gt ones SS 25 gt Oos EETSTEEETESEEETEFEELEREETEITS 7 5 2 N ee lt 22 EE N OO o lele es sie n 3 A n 7 os O Return amp EXHAUST AIR from various parts of home Forced Air ie bathrooms if required kitchens if required rooms Furna
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