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4. ATddV ADUNOS YOO ADV 1d a NVIORLLOHTH NV TIVO OL ASNA LINOMIO LISTA NOILATOS AFC OL NOLLOHNNOO HOLIMS AAH OL DNRIIA 81 TAIM LOAWAOO AOA MOTHO LYOHS OOL WALSAS LONG UV 40 LSAVHXA ATddNS HOLIMS YOO 4504 TANVd OHHO ASAVO TIqVqO Id dvd HONOL daddds HOIH NO NAHM SYALSIOdY NOILAQIALSIA HDIH OOL 79441 SION ASION ONIAONNV SAAV TIVM TYNAALNI LON S LVLSIGIWINHAC 118 ONILVYAdO LON YOLOW YAMOTA STVNINYAL LVLSIGINOQHAG ONILYOHS NAHM NOLLOV ON ONILVA LOV LON YOLOW Yad NVG WaTdOoudd XINO NVIDMLOATA Ad OL AONVNALNIVIA ALON 23 SNOLIVOIdIOddS O L SHHO LIAS 14544 MOT OOL SI OLLV LS WAH LSAS LONG FHL AAV SHOVLIOA dI OTI daddds SITOA 501 qHddS 16 45 MOT CATIVLSNI WALSAS LONG dd LSAW SHOVLIOA DNIAVAA SI AALIWN LVHL WaIdNOO NV 5 1 Al AN
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7. SUMMERAIRE Built Better To Last Longer Light Commercial Central Heat Recovery Ventilator Product Specifications and Installation and User Manual Model SHRV450RD SHRV600RD SHRV1100RD APPLICATION WARNING It is always important to assess how the operation of any Heat Recovery Ventilator HRV may interact with vented combustion equipment i e gas furnaces oil furnaces wood stoves fireplaces etc Never install an HRV in a situation where it s normal operation lack of operation or partial failure may result in the back drafting on vented combustion equipment such as water heaters furnaces and fireplaces DO NOT ATTEMPT INSTALLING THIS HRV WITHOUT FIRST READING THIS ENTIRE MANUAL Summeraire Mfg Peterborough Ontario Canada K9J 6X6 Intertek 3182645 Table of Contents Model specifications 2 Air Flow Diagrams 3 Optional Controls 4 amp Weather hood installation 10 Dedicated Duet system 12 Integrated HVAC System 13 Air Flow Balancing 15 IN IANO eenen enteri a a ane E E asa 18 Mainteneance Motors 18 Trouble shooting guide 20 Winne Diagrams nels 44 naa nea ee eee ens ee ulus 26 Replacement partslist
8. DUCT SYSTEM The Duct System must be well designed to allow the HRV to operate at its maximum efficiency It is very important the Duct System must be adequately sized and includes no sharp radius bends or tees which will significantly increase the pressure drop in the Duct System and reduce air flows Galvanized ducts must be sized for 1200 f p m 6 09 m s maximum velocity this is recommended to avoid excessive pressure drop and noise Ducting should be as short as possible and use the minimum number of elbows and tees Con necting duct sections and shorter runs may be flexible ducting one size larger than the metal duct The use of flexible duct connectors at the HRV will consid erably reduce noise transmission All duct joints must be secured with screws rivets or duct sealant and sealed with aluminum tape DUCTING OUTSIDE OUTSIDE WEATHERHOODS The Outside Weatherhoods required for operation of the SHRV2500 HRV are to be provided by the installing contractor Weatherhoods must have built in bird screens to prevent birds and rodents from entering the premise through the ductwork When designing and locating the fresh air intake consideration should be given to the best place where the hoods will gather the freshest air free from restriction We recommend No less than 10 ft 3 m apart from each other At least 18 in 46 cm above ground level or potential snow accumulation Away from sources of contaminates such as
9. 27 NOTE Anytime the HRV is powered on allow 20 seconds for the main control to reset prior to making any operational changes SHRV 450 600 1100RD MODEL SPECIFICATIONS SPECIFICATIONS DESCRIPTION AMPS SHIPPING WEIGHT LBS 175 6 150 Pa 5 125 4 100 3 75 Pa 2 50 Pa 1 25 Pa Duct connection A Duct connection B AIR FLOW DIAGRAMS SHRV450RD amp LOW SPEED MEDIUM SPEED HIGH SPEED 0 2 0 4 Total E S P in wg 0 6 600 500 u 400 300 ic 200 lt 100 SHRV600RD 700 amp LOW SPEED MEDIUM SPEED HIGH SPEED 0 2 0 4 Total E S P in wg 0 6 1400 1200 5 S Air Flow SHRV1100RD LOW SPEED MEDIUM SPEED f HIGH SPEED 800 600 400 200 0 2 0 4 Total E S P in wg 0 6 gt FAN TIMER 20 MIN OPTIONAL CONTROLS 20 Minute Remote Timer Touch Pad Model ECPBT This 20 Minute Touch Pad MUST be connected to the CT terminals on the HRV exterior This control will not function if connected to PBT connection points Install using 18 2 thermostat wire Maximum number of ECPBT controls per HRV is eight Maximum cumula
10. ONILLAS YAMOT OL LV LSIGINNHAC LAS NOILN TOS ONILONG GHZIS ATHHdOUdWI da99N Td ACIS LNO NO HSAN GH99NTd 4 4 MOTA UV GATTVLSNI LON 4DNVHOX4 LVAH GaLONULSAO SANIT d109 YOOGLNO ATddNS AO NOLLVOO 1 4 HHONV TYE ATAAdOUdWNI SAO 14 GHONV IV8 ATAAdOUdWNI SAO 14 51 41000 SJTALS4AIT O LA STOOd QNL LOH ATGNVH OL GaZISYAGNN ANH OOL 195 IVLSIAINN HAA ASAVO TIqdV8qOtId 4 SMOTA JO INO LLO8 NI X4 LYM T009 S718494 ATdd NS SLONA YO ANV WaTdOoudd 20 LNIOd LAS OL LVLSIGINNHAC LSnav ANY 40 TVAS 1lIVddzl ONIOVA 144V TIVISNI NOLLONULSNI NOILVTTIVLSNI SVH 4400 AO LNOU TIVLSNI LN LLLIIW2IALNI 3 AJAdS YAMOT NO 19 97 NOILVOITddV GATVAS ATALJTAWOO SI 4 LVH L 5 HdV L ATAJA ONINUNL OL STAJHM NVA LOddSNI NOILN TOS MOT OL LAS LV LSIGINNHAC TYNAALNI ALATHNOONI ANOdVA
11. in order to extend its life USE S A E 20W NON DETERGENT OIL Do not over oil as this may damage the motor Depending on the HRV specifications the motors may have sealed bearings that do not require oiling An inspection of the motors will identify if oiling is required 18 ANH 84945 NVA AAMOT OL LSALAGV daddV OL AVI ALIAINNH LNIOd LAS OL LV LSIGINNHAC 145 45001 AVW DNTId1OO HdIAVG ANY LAVHS YOLOW NAIM LAG NOLLOHNNOO LOddSNI HOV Idd2l LNHINOV AVN NO TAY SLHOIT WAMOd OLLSONDVId 47195 LYVLs ONIANA ALVAAdO LON SHOd YOO 2IHdIA VG dI AOV1dd a WALSAS 945 NVA 5 NO SI 5 HIWOH AO NI LV LSIGINAHAG TIVLSNI HALLOTddd AI IVLSIAINNHAA AO 3OdHO DNLLLHS YAMOT OL LSALay 908 ONIA VTA HA LOTAAOO OL S LVLSIGINNHAC Lsarav NOILN TOS GAONV TIVE ATAAdOUdWNI SMOTA HOIH OOL ALVA NOILLVTLLNAA SLNVdN990 40 ATALS FATT LAS TOALNOO LVLSIGINNAAG HHONV TYE ATAAdOUdWNI SMOTA AOLOW IHdIAVd davod TOULNOD TIVA ASSV ACV 1d WAdNVG NOLLVTLLNAA YadOUdWI S LVLSI
12. GINNHAG 40 LNAWLSALAV UAdOUd NI ASAVO TIqdVqO Id NOILVAAdO AGIND ONILOOHS ATANOUL OOL TAATT MOT OOL TAAAT NO SAWOO LHDIT 15 ATO NaZOdd LONG WY LON 1 SAOdNIA NO NOLLVSNHCNOD 1 1515 4 19 STITA ANY 91 NI SNOLLONULSAO JAOWAA TIVISNIAY ANY NVATO AONV IVE THAT LON AVN 4400 NOILISOd ANY 4400 JO NO Tad VT S NVd FHL SNIVUG UALVM TANS TAYN SNOLLOANNOO MOFHO ANIT NI SANIA AOOT SLVAS 100145 NO SONIA FAUNASNA Ad AVN UALVAHAd LONG NI GATIVLISNI SI L TUNSNA 81 OL NNA OL SAYAN NVA AO UV OLNI GATTVISNI SI ATddNS 41 STIVA NO STAD ALVOOT ATOAD ONILVILINI OL 54400 NO SI ANNE LSOU ALON AGISLNO 5 LNAA ACISNI GOOM ONIYOLS ACISNI AUC OL SHHLOTO DNIDNVH ASN NI LON OLA 901 LOH STOOd
13. HRV with up to eight 8 push button timers Up to 2000 lineal ft of 18 2 thermostat wire may be used in any configuration per HRV to service up to four 4 Watchman or Sentinel controls Up to 400 lineal feet of 18 2 thermostat wire may be used in any configuration per HRV to service up to two 2 Sentinel II controls INSTALLATION Typically the HRV is located in the mechanical room with close proximity to an outside wall Other installation locations are acceptable provided that the ambient air temperature does not fall below freezing This is to prevent the condensate drain lines from freezing MOUNTING THE HRV The HRV s may be rotated 180 degrees to permit the connection of the outside atr streams to either the left or right hand side They are factory supplied to be installed with the cold air streams on the right To install this HRV in the reverse configuration simply remove the plastic drain hole plugs from the top of the cabinet and insert into the drain holes in the bottom Included with the HRV are four 4 laminated rubber hanging straps These are to be secured at each of the four corners of the HRV using the screws provided The other ends of the straps should be secured to the floor joists using large head screws To ensure proper condensate flow HRV must be installed level in both directions CONDENSATE DRAIN HOSE INSTALLATION Two 2 drain spigot assemblies are provided These are to be installed through the drain pan
14. INYALAG 55 AVN 37 OLLVLS HIVIdHINVN LON SHOd dNV YOLOW LVHL 5 davod TOULNOD JHL HDNVHO IWYS AHL SADVITOA ADVLITOA ON dI OLOW AHL HDNVHO GANIVLAO TAY SONIGVAA ASAHL dI 1 AHL ANO THM LD AVIA TIIM ADVLITOA SANINAALAG YOLOW AHL AO NOILISOd HHL AVE AVAA GTNOHS ATONIS AO AVJI YALIN AHL AVAT I SdVd ASHHL 40 1 98044 SAVAT WAdNVG GAANOTOD NONINOO ALINNILNOO LSAL 0 SANA HLO SdVd T LOHNNOOSId NOILN TOS GaLONULSNI SV LAS LON SHHOLIMS AYOLOW OL FOVLIOA 29 AOVLITOA ANIT FUANSVAW ADVLITOA LOTNAOONI HHTIV SNI WALSAS LONG duvod TOULNOD JAIL9444A 2IHdINVGd FALLOFAAC ATdVLS V GaLYOHS SI TAIM ADVLTOA MOT TVNYALXA ASAVO aTavdodd ALWAdOUd OL WAAS LON SOA LINN GaONVHDO TOULNOO 1997195 NO HdVIN SNOLLOYTAS SV OL 5 L NSHOd NVA CaLVNINOATI LON LSOUdAC LSOz Hd NISAVLS YOLOW WAdNVG WaTd oudd XINO NVIORLLO9T TH V Ad dAWAOTAAd OL AONVNALNIVI TYNAALXA TIV ALON 24 DNOT OOL GHIVALLOV SI
15. ONT OF THIS MANUAL A magnehelic gauge and pilot tube flow measuring system is used for easy and accurate air flow measurement Upon completion of the installation it is necessary that the Ventilation System be balanced This is necessary to ensure that the volume of air being exhausted from the dwelling is equal to the volume of air being supplied Balancing will also ensure that the HRV is operating at it s maximum efficiency Detailed check list to be carried out prior to balancing a Install air flow station in each of the warm air streams b Ensure that all ductwork is secured and sealed c Drain connections are in place and drain trap filled with water d Dwelling vapour barrier is complete and intact e Fireplace dampers windows and doors are closed f Clothes dryer off if vented to the outdoors g Furnace hot water heater non direct vent are turned off h other exhaust fans are off i Ensure that HRV filters and core are in place and integral balancing dampers are wide open j Power up HRV and set to high speed k Adjust all branch tech grills and registers to desired air flows 1 After taking readings at both the stale air being exhausted and the fresh air supply air stream damper down the higher air flow stream with the integral balancing damper to equal the lower volume air stream m Once the air flows are balanced lock the balancing dampers in place n While it is necessary to ensure that both
16. air streams are balanced within 10 of each other a near balanced condition should be possible o Upon completion return the fan speed selection to the normal speed of low A positive pressure situation within the interior may drive moist air into the external walls of the dwelling where in cold weather it may condensate potentially causing structural damage A negative pressure within the interior may have severe undesirable effects In some geographic locations radon gas may be drawn into the interior space A negative condition may also cause back drafting of vented combustion appliances such as fireplaces and furnaces When it is possible for excessive pressurization or depressurization of a dwelling to occur it may be necessary to perform a Pressure Test This test is most important where fuel fired devices are installed that are susceptible to spillage IS YOUR RESPONSIBILITY TO DETERMINE IF THE PRESSURE TEST IS REQUIRED 15 Summeraire HRV Air Flow Balancing It is necessary to have balanced air flows in any HRV The volume of air brought in from outside must be equal to the volume of air exhausted by the HRV If the air flows are not properly balanced The HRV may not operate at its maximum efficiency A negative or positive air pressure may occur in the building The HRV may not defrost properly Failure to balance the HRV may void warranty Excessive positive pressure may drive moist indoo
17. automobile exhaust fumes gas meters garbage containers cooling towers etc Not exposed to prevailing winds wherever reasonably possible 10 The outside perimeter of the weatherhoods must be caulked to prevent leakage into the building Roof vents must have adequate curb height for water protec tion and to be sealed to the ducting The design and size of the weatherhoods or louvers chosen by the installer must allow for adequate free area Water and snow penetration of the system is mini mized when the airflow does not exceed 750 fpm 3 81 m s free area velocity WEATHERHOOD DUCTING Galvanized metal ducting with sufficient cross section and with an integral single piece vapor barrier should be used to connect to the HRV to the weath erhoods All ducting must meet ULC Class 1 Fire Rating and the minimum R value of the insulation should be equal to 4 RSI 0 75 or as stated in local codes All ducting must be well sealed to prevent air leaks and a sufficient bead of high quality caulking preferably acoustical sealant and taping with a high quality aluminum foil tape is recommended to seal the duct to both the HRV and the weatherhoods DUCTING WITHIN THE BUILDING To reduce airflow restriction in the duct system galvanized ducting should be used from the HRV to different areas within the building whenever possible Also to minimize airflow losses in the duct work system all ducts should be as short as possible and incorp
18. ep resent the time remaining To cancel a selection simply continue to push the select button until it turns off Maximum number of touch pads per HRV is eight 8 and 2000 lineal ft of 18 2 thermostat wire Wall Mount Dehumidistat Model SRDEH This control is typically installed in an area of the home where humidity may require automatic monitoring This could be a central location i e near furnace thermostat or in a specific room i e kitchen laundry etc When wall mount dehumidistats are used set the HRV internal dehumidistat to OFF Connect to HRV using 18 2 thermostat wire Scout Control This standard control is detachable from the HRV Once removed from the HRV only the power ON OFF remains at the HRV By positioning the SCOUT remotely to the HRV you can adjust fans speeds turn the fan off select AUTO OFF intermittent or turn the main HRV control Off When the HRV has been turned off using the SCOUT power still remains on at the HRV ON OFF switch however all external controls such as touch pads and dehumidistats will not function Intermittent In this mode the ventilation fan will run at low speed for 20 minutes and turn off for 40 minutes This cycle will continue until cancelled External devices are active The optional Scout installation kit is required for remote mounting Maximum number of Scout controls per HRV is one 1 with up to 400 lineal ft of 18 2 thermostat wire WATCHMAN Autos intermiten
19. er and affix to HRV near label 6 Note Unit is considered balanced if readings are within 10 17 MAINTENANCE As with any mechanical system a dedicated maintenance program will prolong the life of the equipment and maintain its optimum performance We recom mend at least two 2 full inspections and cleanings per year under normal operating conditions and more if circumstances warrant it Service Should Include Cleaning of screens protecting the outside hoods e Cleaning the core assembly is made up of 3 cores To access the core remove service panels and slide core half way out Wash core s protrud ing from the cabinet with water and or a mild cleaning solution Push core through to the other side of the cabinet and repeat the procedure to clean the other side of the core In many cases only a vacuuming of the core surface is required Always ensure that cores are installed correctly Refer to labels referring to Core This Way Up and Air Filters This Side Inspect filters and replace as necessary Wipe down drain pans and inside of the cabinet using a mild disinfectant Ensure condensate drain has free flow of moisture Inspect blowers and electrical disconnect panel Confirm operation MOTORS Apply 4 5 drops of oil to the ports at each end of the motor every 12 months is required We strongly recommend that the motor s should be oiled once every year
20. he HRV ELECTRICAL An external disconnect must be installed prior to the HRV This disconnect shall be turned off and locked out before servicing the unit All electrical connections shall be made by a qualified and where required by law a licensed electrician Interior Ducting Ducting to the central forced air ductwork system or if used a dedicated duct system should be made of galvanized metal whenever possible To minimize airflow losses runs should be kept as short as possible using 45 degree elbows instead of 90 degree Whenever possible use Y fittings instead of T fittings All joints must be fastened with screws rivets or duct sealant and wrapped with a quality duct tape to prevent leakage If standard grills are used it is recommended that wall grills of not less than 6 x 12 and floor grills of no less than 4 x 10 be used to minimize air flow restrictions Fresh Air Supply Ducting Fresh air supply grills may be either wall or ceiling mounted Avoid locating these grills where room occupants may be exposed to the fresh air supply as this air temperature may be slightly less than the room air temperature Stale Air Return System The stale air return system is used to extract humid stale air from the areas of the dwelling where the worst air quality conditions might exist Note Check local code compliance before implementing 14 Air Flow Balancing READ THE APPLICATION WARNING AT THE FR
21. holes provided Simply install the spigot through the openings and secure in place by installing the nylon washer and nut on the outside of the cabinet Ensure that the drain holes that are not used are plugged with the drain plugs installed in the cabinet Once installed attach 1 2 plastic tubing not supplied to the spigots Create a trap by forming a loop in the tubing This will prevent the cross contamination of the air streams through the tubing Ensure that the condensate drain tubing is not exposed to freezing temperatures Typically the drain line is connected into a floor drain sink or stand pipe Drain Opening Plugs Create Trap INSTALLATION INSTRUCTIONS NOTICE Do not operate this device without ductwork connected Minimum ESP external static pressure required is 20 per air stream Failure to provide adequate ESP may result in the failure of the motor curcuit fuses located on the main control board LOCATION The HRV should be suspended from a supported ceiling ideally in a mechanical room proximate to an outside wall to establish outside venting and weather hoods This unit can only be mounted indoors and consideration should be give to the location of available power and water drainage for the unit s condensa tion When installing the unit ensure that it is level and that adequate space is allowed around the unit for easy accessibility into the access doors for service and maintenance
22. ilation rate speed of the system should be reached before the contami nant has reached its maximum 2 It is recommended that backdraft dampers be installed in the supply and exhaust ductwork to the outside to prevent air from entering in through the HRV when the HRV is OFF Failure to install backdraft dampers may result in damage to HVAC equipment and or other building components INTEGRATED HVAC SYSTEM Increasingly the HRV has become an integral component of the commercial HVAC system HRV s are very versatile being able to provide fresh air directly to the return air plenum of a rooftop heat cool unit or into a ceiling return air plenum or directly into the ceiling space near the air handlers intake Special care and attention should be given if connecting this unit to any air handler or other unit that may draw more than the SHRV600RD is designed to accommodate Installations where it is satisfactory to provide general exhaust from the space the air to be exhausted may be taken directly from the return air plenum to the as it is drawn back to the air handler Fresh air supplied by the HRV is then introduced directly into the return air plenum but at a location closer to the air handler The air handler would have a constant running blower to effectively 13 distribute the fresh air and remove the stale air Balancing dampers would be located in both the HRV supply and exhaust ducts between the return air plenum and t
23. or allowed to increase to toxic concentration levels The HRV allows for economical operation of the HVAC system while effectively removing contaminates from the space In designing the exhaust portion of the system the exhaust grilles are placed so as to remove the contaminates while not allowing them to enter the breathing zone of the oc cupants For contaminates that are lighter than air grilles should be located high on the wall If contaminates are heavier than air a lower placement of the grilles will be required Information on contaminates specific gravity and toxicity should be available from the chemical data sheets Dedicated Duct System In this arrangement the HRV is installed with a dedicated duct system All appli cable rooms are exhausted and provided with fresh air supply as required The main advantage of this type of installation is it provides the ability to balance the exhaust and supply air streams for each serviced room The HRV system can also be operated independently of the forced air heating cooling system Please refer to fig below LY WARM SUPPLY COLD EXHAUST COLD SUPP SUPPLYAIR DUCT SYSTEM The fresh air supply ductwork from the HRV may be directly connected to the return air duct of the forced air system When directly connected it is recom mended that the air handler blower be in constant operation to move the fresh air about the building see warning under The Integ
24. orate as few elbows as possible The use of 45 elbows is preferred to 90 elbows and Y tees instead of 90 tees is also recom mended All duct joints must be fastened securely and wrapped with a quality duct tape such as aluminum foil tape to prevent leakage NOTE See Installation Warning under the Integrated HVAC System section STALE AIR RETURN DUCT SYSTEM The Stale Air Return Duct System is used to draw stale air from the points of the building where the worst air quality problems occur Balancing damp ers and or adjustable grilles are recommended on all return air lines which are used during installation to help balance the draw from different areas of the building Note that the installation schematics show balancing dampers and or adjustable grilles all return air lines coming back to the HRV Please refer to figs 1 3 to view the various installation system options 11 A balancing damper is required prior to the HRV to balance the stale air exhaust ed with the fresh air supply entering the building Return air extraction points should be located at the opposite side of the room to the fresh air inlet The inlets may be located in the ceiling or high on the walls and fitted with inlet grilles Many commercial activities produce air contaminates in the form of dusts fumes vapors and gases Contaminates should be controlled at the source so that they are not dispersed through the building n
25. r bath fan etc make sure all filters are clean 3 Set build in balancing dampers fully open Tap 1 8 hole in ductwork for pitot tube insertion 16 Cold Supply Warm Exhaust a lt Cold Exhaust Warm Supply Balancing Procedures 1 Set HRV to high speed Make sure that the furnace blower is ON if the installation is in any way connected to the ductwork of the furnace If not leave the furnace blower OFF Adjust air flow in branch lines if using source point exhaust and or supply 2 If outside temperature is below 3 C 26 F make sure defrost light is not on while balancing 3 Place magnahelic gauge on a level surface and adjust it to zero Insert pitot tube into exhaust air ductwork with tip aligned with ductwork pointing away from into air flow Record the reading on gauge 4 Move kit to other air stream insert pilot tube into fresh air ductwork with tip aligned with ductwork pointing towards HRV into air flow Record reading on gauge Adjust fresh air balancing damper until reading is approximately the same as in exhaust air ductwork If the reading in the fresh air ductwork is less than in the exhaust air go back and adjust the exhaust balancing damper to equal the fresh air flow 5 Secure dampers in place with fastening screw Duct tape over pitot tube holes Convert FPM reading on gauge to CFM with conversion chart and record on balancing stick
26. r air into external walls of the building where it may condense in cold weather and degrade structural components It 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 building through basement ground contact areas Excessive negative pressure may also cause back drafting of atmospherically vented combustion appliances Read the Application WARNING on the Front Page of This Manual Prior to balancing insure that 1 All sealing of the ductwork system has been completed 2 All of the HRV s components are in place and function properly 3 Balancing dampers are open 4 HRV is on High Speed 5 Air flows in branch lines to specific areas of the building should be ad justed first prior balancing the HRV 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 building duct the lower CFM L s velocity reading should be left alone while the duct with the higher reading should be dampered to match the lower reading 7 Return HRV to appropriate fan speed for normal operation Preliminary Procedures 1 Seal all the unit s ductwork with foil tape 2 Close all windows and doors and fireplace damper turn off all exhaust devices range hoods clothes drye
27. rated HVAC System Also it is advisable to include a short length fabric flex duct or other non metallic 12 connector in this hard duct line in order to keep the HRV acoustically isolated and 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 It may be necessary to install a separate fresh air supply ductwork system if the heating is other than forced air When installing an HRV the designer and installer should be aware of local codes that may require smoke detectors and or firestops in the HVAC or HRV ductwork Because an HRV is designed to bring fresh air into the building struc tures may require a supply voltage interrupt when fire or smoke or flame sensors are triggered or central fire system is activated Supply air grilles may be ceiling or high wall mounted Avoid incoming fresh air grilles that could cause a direct draft on the occupants as the incoming air may be below room temperature A reheat duct heater can be installed to improve oc cupant comfort Information on electric or hydronic duct heaters is commercially available INSTALLATION TIPS 1 Whichever method is chosen to operate the SHRV600RD keep in mind that Air to Air exchangers are not booster fans and are not normally sized to ventilate at a steady rate To achieve optimum performance from the SHRV600RD the desired vent
28. selectable options These include Relative Humidity RH selection Auto Off Low Medium and High speed ventilation System Off and Intermittent ventilation RELATIVE HUMIDITY By rotating the control dial the indoor RH can be set In this mode the HRV responds by automatically switching to HIGH speed ventilation should the indoor humidity be high than the selected level Humidity reduction only occurs during the heating season AUTO OFF Ventilation remains off until activated by the internal Sentinel dehumidistat or a remote control device such as a dehumidistat a timer SYSTEM OFF and external control devices are turned off Power does remain on at the HRV control INTERMITTENT When selected 20 minutes of LOW speed ventilation is provided followed by 40 minutes of off time This cycle repeats until another selection is made All external devices such as dehumidistat and timers are functional If a dehumidistat is activated the HRV will switch to High speed ventilation then return to Intermittent when deactivated SCOUT WATCHMAN Indications MODE SCOUT WATCHMAN Intermittent Fan Off Auto Off Blink Intermittent LED ON Blink Auto Off Low Blink Intermittent LED ON Blink Low Default fan speed Slow Blink Default fan speed Slow Blink Summer Switch System Off Blink System Off Blink on Temp lt Sdeg F Note Up to 2000 lineal ft of 18 2 thermostat wire may be used in any configuration per
29. t SUMMER IRE nR P VENTILATION CONTROL System ott QS WATCHMAN CONTROL The WATCHMAN is an optional intermediate remote control It permits the following function selections SYSTEM OFF In this position all internal and external controls are disabled FAN OFF Ventilation fan is off cold exhaust port is closed external devices are active FAN SPEED Low Medium or HIGH can be selected INTERMITTENT In this mode the ventilation fan will run at low speed for 20 minutes and turn off for 40 minutes This cycle will continue until cancelled External devices are active AUTO OFF In this mode the ventilation fan remains off until activated by either the internal dehumidistat or an external control such as a touch pad or dehumidistat RELATIVE HUMIDITY By rotating the control dial you can select desired levels of indoor humidity Humidity reduction will only occur during the heating season Should the set point be below the indoor relative humidity the HRV will automatically switch to high speed Typically connection leads would be distributed from a central location and connected at the HRV with a single 18 2 lead Maximum number of Watchman or Sentinel controls per HRV is four 4 with a total of 1600 lineal ft of 18 2 thermostat wire MED O 100 0 SYS OFF SENTINEL II CONTROL The optional Sentinel II control is an external control device providing the user
30. tive lead length is 2000 lineal feet Touch pads are typically installed where 20 minutes of high speed ventilation may be desired Once activated by a momentary push of the SELECT button on the Touch Pad approximately 3 seconds the HRV is switched to high speed ventilation and the Touch Pad LED will illuminate The HRV will reset to the previously selected mode of operation once the 20 minutes have expired To cancel th