Installation Instructions
Contents
1. Coil J14 2 COM Connect to G at Furnace Fan Coil J14 3 NC_ Connect to G at Thermostat BLK see notes 3 5 120V 60Hz v BLK Supply fan motor e BLU BRN GRN GRN MODELS HRVCCSHA1100 HRVCCSVA1100 ERVCCSHA1100 ERVCCSVA1100 M1 Supply 0 0 0 0 OFF OFF OFF Closed t 0 1 1 Exchange low speed LO LO Opened 1 Wd td Exchange high speed HI HI Opened 1 T TY 6 Circulation high speed HI OFF Closed 1 1 9 Defrost HI OFF Closed A07118 Fig 17 ERV HRV Wiring Diagram 12 LOGIC DIAGRAM 120V 60Hz 120V 60Hz LINE RETURN Q J10 2 J01 Q Fi K2 o Ki Exhaust fan motor LB ne ot E S 453 _ E G O Exhaust fan motor J94 J7 2 ave Q Q J7 1 Q K3 Supply fan motor J44 9 32 4 o gt Supply fan motor tc ja capacitor m Q oi gt tc Lu Damper motor AIR HANDLER FAN INTERLOCK 24VAC CLASS 2 CIRCUIT ONLY optional see notes 3 5 Override optional see notes 3 4 Field wiring wall control See notes 3 4 A07417 Fig 18 ERV HRV Wiring Diagram 13 ERV HRV Copyright 2008 Carrier Corp 7310 W Morris St e Indianapolis IN 46231 Printed in U S A Edition Date 02 08 Catalog No ERVHRV 2SI SS ee n a s Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces ERVHRV 1SI 142. High Twice Green Speed Three Times No Light Unit is OFF If a problem occurs during the unit operation its integrated control LED 2 will blink The color of the blinking light depends on the type of error detected Refer to Troubleshooting for further details NOTE The ERV HRV may be controlled using the Infinity system control The ERV HRV may be connected using either a NIM or a 4 Zone Damper Module See the appropriate instructions if using the NIM or a 4 Zone Damper Module for connection instructions The Infinity system control will simultaneously control the ERV HRV and the indoor blower Push Button Timers may be used and are connected to the ERV HRV However the Infinity system should be set to continuous fan to ensure that the fresh air is circulated in the home In a Zoned System at least one zone should be set to continuous fan OPERATING THE ERV HRV WITH THE INFINITY CONTROL The ventilator has four settings in heating mode and three settings in cooling mode Heating AUTO the ventilator selects the speed based on indoor humidity and outdoor temperature It may cycle on off every 30 minutes depending on humidity and outside temperature LOW low speed all of the time HIGH high speed all of the time ERV HRV ERV HRV DEHUM will only turn on if humidity is 3 over setpoint The speed is determined by indoor humidity and outdoor temperature Cooling AUTO the ventilator selects
3. does not work The 30 second boot sequence is not completed See Boot Sequence 10 Table 6 Temperature Ohm Relationship Table 7 Defrost Cycle Temp F C Resistance Ohms HRV DEFROST CYCLES 9 23 78330 Operation time min 8 22 74610 ro e eaput posu each 6 21 71100 efrost cycle 4 20 67770 A 7 25 Se 64070 17 F and less aic 61340 27 C and less 10 22 H e SM ERV DEFROST CYCLES 5 15 53410 Outside Temp Defrosting ee 7 14 50980 F C minutes defrost cycle 9 13 48680 23 to 17 F 9 23 10 12 46500 5to 27 C 12 11 44430 17 F and less 10 22 14 10 42470 27 C and less 16 9 40570 18 8 38770 19 7 37060 21 6 35440 23 5 33900 25 4 32440 27 3 31050 28 2 29730 30 1 28480 32 0 27280 34 1 26130 36 2 25030 37 3 23990 39 4 23000 41 5 22050 43 6 21150 45 7 20300 46 8 19480 48 9 18700 50 10 17960 52 11 17240 54 12 16560 55 13 15900 57 14 15280 59 15 14690 61 16 14120 63 17 13580 64 18 13060 66 19 12560 68 20 12090 70 21 11630 72 22 11200 73 23 10780 75 24 10380 77 25 10000 79 26 9632 81 27 9281 82 28 8944 84 29 8622 86 30 8313 88 31 8014 90 32 7728 91 33 7454 93 34 7192 95 35 6940
4. such as cleaning and replacing air filters All other operations must be performed by trained service personnel When working on this equipment observe precautions in the literature on tags and on labels attached to or shipped with the unit and other safety precautions that may apply Follow all safety codes Installation must be in compliance with local and national building codes Wear safety glasses protective clothing and work gloves Have fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit Recognize safety information This is the safety alert symbol When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand these signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation INTRODUCTION The Energy Heat Recovery Ventilator ERV HRV is used to exchange indoor stale air with outside fresh air The unit is equipped with a special energy heat
5. the speed based on indoor humidity and outdoor temperature It may cycle on off every 30 minutes depending on humidity and outside temperature LOW low speed all of the time HIGH high speed all of the time If the fan speed is set to Auto and the ventilator wants to run the fan speed will run at High continuous speed Otherwise the fan will stay at the chosen continuous fan speed BOOT SEQUENCE The unit boot sequence is similar to a personal computer boot sequence Each time the unit is plugged after being unplugged or after a power failure the unit will perform a 30 second booting sequence before starting to operate During the booting sequence the integrated control LED will light GREEN or AMBER for 5 seconds and then will shut off for 2 seconds After that the LED will light RED for the rest of the booting sequence During this RED light phase the unit is checking and resetting the motorized damper position Once the motorized damper position completely set the RED light turns off and the booting sequence is done NOTE No command will be taken until the unit is fully booted ELECTRICAL CONNECTIONS 115 VAC Wiring The ERV HRV operates on 115VAC It comes with a power cord attached to unit and ready to plug into a fused outlet Unit must be grounded for proper operation All electrical connections must comply with National and Local Electrical Codes or other ordinances that might apply 4 WARNING ELECTRICAL S
6. 97 36 6699 99 37 6467 100 38 6245 11 ERV HRV ERV HRV CONNECTION DIAGRAM Line voltage factory wiring Class 2 low voltage factory wiring Class 2 low voltage field wiring 1 For continued fire protection use specified UL COLOR CODE _ I DAMPER ELECTRONIC listed CSA Certified line fuse ASSEMBLY 2 If any of the original wire as supplied must be BLACK replaced use the Same equivalent wire BLUE x is 5 i BROWN 3 Field wiring must comply with applicable codes GREEN ordinances and regulations CRY 4 Remote controls available See instruction ORANGE manual class 2 circuit RED ghi T WHITE 5 Furnace fan circuit must be class 2 circuit only YELLOW 2 44338 Is 6 Door interlock l Switcl Lf M BLK magnetically l je Rs actuated reed ETA rost temperature Bu 2ov f 24V class 2 I wich i Xi iun 68V was RD imis M fi 95V 1101 f n dass2 OV war WHT eat P i We op jue gos ae ae a Field wiring Pr n LILLI remote control 1 1 Y lapy PEE see notes 3 4 LY BRN LILLI Il L D GRN BLK Brantner QY m m L if ence LILLI ELETI um FELI 9 pect tte 8 DEEE fees 7E Exhaust fan motor BLK 6 Fel lt Override switch capacitor 5 EZ ees See notes BLK Je 1E 34 att 12345 2 Teall 1C BLK Ji4 5 Lj I r interlock ELECTRONIC ASSEMBLY Furnace blowe g J14 1 Connect to R at Furnace Fan
7. ERVCCSVA1100 ERVCCSHA1100 HRVCCSVA1100 HRVCCSHA1100 Energy Heat Recovery Ventilator Installation NOTE Read the entire instruction manual before starting the installation TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS 0 00 eee eee 1 INTRODUCTION i RR ve y cease eeu 1 INSTALLATION CONSIDERATIONS 4 5 2 COMPONENT DESCRIPTION eeeeeeeeeA 2 UNIT INSTALLATION lesse es 2 WALL CONTROL 4 ieseike b RR Rx OR Bray doe deo 4 OPERATING THE ERV HRV WITH THE INFINITY CONTROL eese eee 5 ELECTRICAL CONNECTIONS 0 0 202 eee 6 ACCESSORIES pee 05000 08 hab X nie Ra AA RA SN 6 BALANCING ERV HRV sssseeeee eee eee eee 7 VENTILATION EVALUATION seseeee eene 8 CONTROL BOARD OPERATION 02 065 8 CARE AND MAINTENANCE 2 0 00 eee eee 8 TROUBLESHOOTING 0 00 0 cee es 9 1 Fresh air to building port 2 Exhaust air from building port 3 Fresh air from outside port 4 Exhaust air to outside port A08103 Fig 1 ERV HRV Unit Top Port A05330 Fig 2 ERV HRV Unit Side Port Turn to the Experts Instructions SAFETY CONSIDERATIONS Installation and servicing of this equipment can be hazardous due to mechanical and electrical components Only trained and qualified personnel should install repair or service this equipment Untrained personnel can perform basic maintenance functions
8. HOCK FIRE HAZARD Failure to follow this warning could result in personal injury death and or property damage Do not use an extension cord as a power source for operating the ERV HRV 12VDC Wiring The ERV HRV circuit board wall control and accessories operate on 12VDC See Wall Control section item Wiring and Fig 5 and 10 for more information ACCESSORIES 20 Minute Timer A push button timer can be used to override the wall control and put the ERV HRV into high speed for 20 minutes Connect switches in parallel and connect leads to ERV HRV terminals I OC and OL See Fig 12 Push button locations are ideal in special activity areas such as bathroom or kitchen where high speed exhaust operation is needed for a short period of time NOTE The 20 minute timer will not function properly unless ERV HRV wall control is applied and working correctly Timing function is internal to electronic circuit board it is activated by a momentary contact between OC and OL The I connection is to illuminate the push button The maximum number of push button timers that can be applied is 5 60 Minute Adjustable Timer A 60 minute adjustable timer can also be used to override wall control and put HRV into high speed operation for a select amount of time Connect timer in parallel with push button timers or to ERV HRV terminals OC and OL See Fig 12 The 60 minute timer will provide a minimum of 10 minutes and a maximum of 60 minut
9. VAC Then set the unit on high speed by pressing on the integrated control 1 more time the LED will light GREEN Using a multimeter check the voltage on J4 1 and J4 2 for supply motor and on J5 1 and J5 2 for exhaust motor The reading must be 120VAC If all the readings correspond to the right voltage values the circuit board is not defective If one or both readings are different change the circuit board Using a multimeter check the ohms value on each motor connectors Black motors values For BLUE and BLACK motor wires the right value is 55 ohms For BLUE and BROWN motor wires the right value is 35 ohms For BROWN and BLACK motor wires the right value is 89 ohms Aluminum motors values For BLUE and BLACK motor wires the right value is 51 ohms For BLUE and BROWN motor wires the right value is x 47 ohms For BROWN and BLACK motor wires the right value is 98 ohms If he ohms values are the same the motor is not defective Replace the motor capacitor The defrost cycle does not work the fresh air duct is fro zen OR the fresh air distributed is very cold See Table 7 for Defrost Cycle Tim ing Ice deposits may be hindering the damper operation The damper rod or the port damper itself may be broken The damper actuator or circuit board may be defective Remove the ice Inspect these parts and replace if necessary See Problem 2 The integrated con trol push button
10. a control logic explanation Off and Intermittent Off Mode When ERV HRV is Off K1 relay is open and K5 relay is energized which closes outside air damper High Speed Air Exchange When high speed air exchange occurs K1 and K2 relays are energized and K5 relay is de energized This opens low speed contacts and closes high speed contact on K2 relay This also opens contact on K5 relay which opens outside air damper Then 115VAC is applied between orange and gray wires on Molex plug pins 1 and 6 and blower motor runs in high speed operation Low Speed Air Exchange When low speed air exchange occurs K1 Relay is energized which closes the contacts K2 and K5 relays are de energized This keeps low speed contacts closed and high speed contacts open on K2 relay and opens outdoor air damper 120VAC is applied between Red and Gray wires on Molex plug pins 1 and 4 and blower motor runs in low speed operation CARE AND MAINTENANCE Door ERV HRV door can be removed by unlatching brief case style latches then slide door to the right and remove it from hinges Door must be in place and secured shut for proper operation Filter Filters in ERV HRV are washable and should be cleaned every 3 months Use a vacuum cleaner to remove heaviest portion of accumulated dust then wash in lukewarm water Allow filter to completely dry before reinstalling A dirty air filter will cause excessive strain on blower motor Never operate unit withou
11. aust air is greater than supply air combustion appliances may backdraft bringing exhaust fumes into the house A balanced condition will ensure optimum performance provide satisfied customers and avoid expensive callbacks Before proceeding with balancing all windows doors and fireplace flues should be tightly closed No exhaust systems such as range top exhausts dryer exhaust fume hoods bath or roof fans should be in operation The forced air furnace if used for circulation should be operating in continuous fan mode for normal operating speed Balancing Procedure Step 1 Set the unit to high speed Make sure that the furnace air handler blower is ON if the installation is in any way connected to the ductwork of the cold air return If not leave furnace air handler blower OFF If the outside temperature is below 32 F 0 C make sure the unit is not running in defrost while balancing By waiting 10 minutes after plugging the unit in you are assured that the unit is not in a defrost cycle Step 2 Magnehelic gauge placement Place the magnehelic gauge on a level surface and adjust it to zero Step 3 Connect tubing from gauge to EX HAUST air flow pressure taps Be sure to connect the tubes to their appropriate high low fittings See Fig 13 If the gauge drops below zero reverse the tubing connections NOTE It is suggested to start with the exhaust air flow reading because the exhaust has typically more re
12. blem during the winter season NOTE This control is not to be confused with a dehumidistat used during the summer months to control high relative indoor humidity Table 2 recommends humidity levels to avoid condensation OneTouch Control The OneTouch Control can be used as the primary wall control for the ERV HRV This control will step through the modes of operation with consecutive presses of the button The LED indicates which mode is currently selected Off Intermittent Low or High NOTE OneTouch Control does not have a humidity selector NOTE OneTouch Intermittent mode exchanges air on low speed for 20 minutes per hour Latent Control NOTE For Latent Controls used with ERV s to ensure highest degree of humidity control in cooling season the INTERMITTENT mode should be used Integrated Control All units are equipped with an integrated control located under the unit in front of the electrical compartment Use the push button 1 to control the unit The LED 2 will then shows on which mode the unit is in Integrated Control overrides Wall Control function When LED is off ventilator responds to Wall Control command See Fig 11 mers 4 cows O A07260 Fig 11 Integrated Control Refer to table below to see how to operate the unit using its integrated control PRESS ON PUSH BUTTON LED COLOR RESULTS Unit is on Low Once Amber Speed Unit is on
13. ced air system unit should be located next to or close to the indoor equipment COMPONENT DESCRIPTION The following listed items are components of ERVCCSHA See Fig 4 1 Exhaust air connected to outdoor air exhaust hood 2 Fresh air intake connected to outdoor air inlet hood 3 Fresh air supply from ERV connected to return air duct of forced air system 4 Mechanical filters trap dust contained in the air 5 Energy recovery core is a cross flow type The core trans fers heat between the 2 air streams 6 Blowers bring in fresh air from outside and exhaust stale air to outside 7 Electronic control circuit ensures proper unit operation 8 Stale air return from building connected to return air duct system WALL CONTROL O O AIR EXCHANGE ON ERV ports on side bottom view A05263 Fig 4 Conventional Horizontal Unit See Fig 5 for terminal connector block for wiring wall and timer controls UNIT INSTALLATION A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Do not install ERV HRV in a corrosive or contaminated atmosphere Mount Unit The ERV HRV can be suspended from floor joists using chains and 4 springs Attach metal hanging bracket to all 4 sides of cabinet See Fig 6 The unit may be installed on a shelf if an isolation pad is provided to dampen vibration Unit should always be installed as level as possibl
14. e CONTROL CONNECTOR OFF LOW INTERMITTENT Terminal Connector A07418 Fig 5 Control Connector A05331 Fig 6 Chain Spring Installation Independent System Application In the absence of a forced air system and a typical duct system layout the ERV HRV can be applied as an independent or stand alone unit To ensure comfort this type of application involves running both fresh air and return air registers or stale air pickup registers throughout the home Fresh air registers are normally located in bedrooms dining room living room and basement It is recommended that registers be placed 6 to 12 152 to 305mm from the ceiling on an interior wall and airflow directed toward ceiling If registers are floor installed airflow should be directed toward the wall B FURNACE A WARNING CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in personal injury or death Do not install return air registers or stale air pickup registers in same room as gas furnace or water heater Return air or stale air pickup registers are normally located to draw from kitchen bathroom basement or other rooms where stale air can exist Proper size and type of registers must be used to minimize pressure drop The velocity of airflow through register should not be above 400 ft 122m per minute Maximu
15. es of ventilation at high speed ELECTRONIC CONTROL THE WIRES FROM THE SWITCH BOARD YELLOW INDICATOR J3 3 BLACK COMMON J3 4 RED SWITCH J3 5 BLACK YELLOW ea oR a a Wen Sera pou tx Up aes Fn om d MN 60 MINUTE TIMER OPTIONAL PUSH BUTTON SWITCHES 5 SWITCHES MAXIMUM OC BLACK J3 4 COMMON Ne v YELLOW J3 3 INDICATOR TERMINAL STRIP e RED J3 5 TERMINAL STRIP OL BACK OF PUSH BUTTON SWITCH A98386 Fig 12 Push Button Timer Wiring Layout BALANCING ERV HRV Balancing intake and exhaust airflow is very important for proper system operation and optimum performance when applying an ERV HRV Unit balancing prevents a positive and or negative pressure within the home Balancing the ERV HRV is done by applying magnehelic gauge and using the balancing dampers at the fresh air intake and stale air exhaust ducts See Fig 13 HIG Hum 9 LOW Fresh air flow Balancing Chart See Detail A DETAILA Port with integrated balancing damper Top View A07261 Fig 13 Balancing ERV HRV Airflow is determined by temporarily connecting a magnehelic gauge to the pressure taps on ERV HRV See Fig 14 Balancing chart is located on unit door A98400 Fig 14 Magnehelic Gauge If supply air from outside is greater than exhaust air from the house an imbalance can result over pressurizing the home If exh
16. everse position The wires may be broken The wire in the wall OR the wall Ensure that the color coded wires have been connected to their work OR its indicator flashes appropriate places Inspect every wire and replace any that are damaged Remove the wall control and test it right beside the unit using another control may be defective shorter wire If the wall control works there change the wire If it does not change the wall control The dehumidistat does not work OR the 20 minute push button timer does not work OR its indicator light does not stay on The wires may be in reverse position The dehumidified or push button may be defective Ensure that the color coded wires have been connected to their appropriate places Jump the OL and OC terminals If the unit switch to high speed remove the dehumidistat or push button and test it right beside the unit using another shorter wire If it works here change the wire If it doesn t change the dehumidistat or the push button No c Inq 1 focfoufy afe B EERECTINBEE The supply and or exhaust motor do not work The circuit board may be defective The motor s may be defective Press on the integrated control push button until the unit turn on low speed the LED will light AMBER Using a multimeter check the voltage on J4 1 and J4 2 for supply motor and on J5 1 and J5 2 for exhaust motor The reading must be 68
17. ip If thermistor is defective replace the entire port assembly fresh air from outside port Close the door and press once on the integrated control push button to reset the unit Go to Problem 5 below Go to Problem 6 below Problem Possible causes You should try this 1 Unit does not work The circuit board may be defective Unplug the unit Disconnect the main control and the optional control s if need JQ c NC dou v G be Jump G and B terminals Plug the unit nog c Ng 1Jodorv 6 back and wait about 10 seconds If the motors run on high speed and the damper opens the circuit board is not defective LI T I LET Esser 2 The damper actuator does not work The damper actuator or the integrated damper port mechanism may be defective The circuit board may be defective Unplug the unit Disconnect the main control and the optional controls s if need be Wait 10 seconds and plug the unit back Check if the damper opens If not use a multimeter and check for 24VAC on J12 1 and J12 2 in electrical compartment If there is 24VAC replace the entire port assembly NOTE It is normal to experience a small delay 7 8 seconds before detecting the 24VAC signal at starting up This signal will stay during 17 18 seconds before disappearing If there is no 24VAC replace the circuit board The wall control does not work OR its indi cator flashes The wires may be in r
18. is caution may result in equipment CPU will go into a 5 minute defrost cycle every 20 minutes This damage or improper operation feature is not there on older board versions with 3 pin jumpers DO NOT use water to clean core or damage will result In Override Test addition before servicing or removing the core inspect the See aan edges to see if they appear soft or slightly expanded This can be normal and due to moisture in the air DO NOT handle or service core until it is dry or air passages can become damaged and or closed High Speed 1 Disconnect ERV HRV from 115VAC 1 Unplug wall control wires at control module terminal block in side ERV HRV a WARNING 2 Plug ERV HRV back to 115VAC 3 Attach a wire across J3 8 and J3 9 B and G on control mod ELECTRICAL SHOCK HAZARD ule terminal block Failure to follow this warning could result in personal injury 4 Close door this will initiate a high speed exchange or death Low Speed Before installing or servicing system always turn off main 1 Unplug ERV HRV from 115VAC power to system There may be more than 1 disconnect 2 To use override test function a thermistor must be connected to the control board Unit must not be in defrost mode during an override test ERV HRV Disconnect wall control wires at control module terminal block ewan inside ERV HRV 3 Plug ERV HRV back to 115 VAC 4 Connect a 3 0 K ohm resistor between B and G on control module terminal bl
19. m length of duct for the system should be designed according to the highest speed of the unit Refer to specifications listed in unit Product Data Digest for ventilation capacities Forced Air Application Most ERV HRV applications will be installed in conjunction with new or existing forced air system To operate properly the fresh air supply and stale air return from ERV HRV connect directly to return air duct system This is how the ERV HRV distributes fresh air and removes stale air from inside of building See Fig 7 For these installations furnace or fan coil blower must be interlocked and operate continuously whenever ERV HRV is energized See Fig 17 for interlock wiring detail NOTE The fresh air from ERV HRV is introduced into return air duct at a point no less than 6 ft 1 8m upstream of furnace or fan coil This connection should be direct See Fig 7 This is to allow incoming fresh air to mix before entering indoor equipment NOTE A B Not less than 10 ft 3 m i 3ft 9 m MIN INSULATED DUCT CONNECTING J FRESH AIR amp EXHAUST TO OUTSIDE NOTE Supply amp exhaust ducts have internal balancing dampers that must be adjusted EXHAUST HOOD 18 457 mm 1 GROUND LEVEL A07282 Fig 7 Exhaust Ventilation ERV HRV ERV HRV Connect Ducts to ERV HRV A CAUTION PROPERTY DAMAGE HAZARD Failure to follow this caution may result in minor property damage from sweati
20. n ERV HRV and exterior wall Fresh air intake and stale air exhaust must be separated by at least 6 ft 1 8m Fresh air intake must be positioned at least 10 ft 3m from nearest dryer vent furnace exhaust driveway gas meter or oil fill pipe Fresh air intake must be positioned as far as possible from garbage containers and potential chemical fumes When possible it is advised to locate the intake and exhaust hoods on same side of house or building The intake and exhaust hoods should never be located on interior corners or in dead air pockets See Fig 7 Both intake and exhaust hoods must be 18 457mm from ground and at least 12 305mm above anticipated snow level After selecting proper hood locations make appropriate size hole through exterior wall pass flexible duct through hole and insert hood tube into duct Tape duct vapor barrier tightly around hood tube and insert assembly back into wall and fasten securely Condensate Drain For ERV skip this step and continue to the next step To connect condensate drain proceed as follows 1 Punch out holes in foam insulation and door then insert sleeved grommets into bottom of unit using the gasket washer and nut See Fig 9 2 Cut two sections of plastic tubing about 12 305mm long and attach them to each drain 3 Join the two short sections of plastic tubing to the T con nector and the main tube as shown 4 Make a loop in the tubing below the T connect
21. ng duct or loss of unit efficiency and capacity If ERV HRV duct work is installed in an unconditioned space insulated flexible duct is required Insulated flexible duct is required on both fresh air inlet and exhaust air outlet ducts connecting to exterior wall When using insulated flexible duct the vapor barrier of the flexible ducts must be taped very tight to prevent condensation problems To reduce pressure drop stretch the flex duct and support it in a proper manner to avoid reduced airflow When connecting the ERV HRV to a return air duct system insulated flexible duct can be used However when metal or rigid ducts are applied use approximately 18 457mm of flexible duct at ERV HRV ports for fresh air supply and stale air return When using metal duct from fresh air supply to system duct work the metal duct should be insulated See Fig 8 This can act as a silencer when connecting ducts to return air duct system This should eliminate transmission of noise or vibration from unit to main duct system RETURN STALE AIR FRESH AIR SUPPLY 1 FLEXIBLE DUCTS CONNECTING TO RETURN AIR DUCT SYSTEM A08102 Fig 8 Flexible Duct Fit Up Locate and Install Exterior Hoods IMPORTANT To prevent condensation problems insulated flexible ducts are required on both fresh air inlet and exhaust air outlet ducts connecting betwee
22. ock CAUTION 5 Close door this will initiate a low speed exchange CUT HAZARD Blower Speed Selection Three speed blowers are factory connected to electronic control board on HIGH and LOW speed taps of blowers Installer can Sheet metal parts may have sharp edges or burrs Use care easily change low speed tap to medium speed tap so electronic and wear appropriate protective clothing and gloves when control will select between high and medium speed Connections handling parts can be changed at motor location Failure to follow this caution may result in personal injury To change low speed to medium speed proceed as follows 1 Unplug unit from 115VAC Locate blower assembly 2 3 Locate red wire an blue wire coming from blower assembly 4 Unplug red wire from quick connect 5 Unplug protecting cap quick connection from blue wire and put on red wire coming from blower The cap is a safety insula tor 6 Connect red wire of main harness to blue wire 7 Replace wires ERV HRV LED flashes GREEN LED flashes RED LED flashes AMBER If the integrated control LED of the unit is flashing this means the unit sensors detected a problem See the table below to know where on the unit the problem occurs Table 5 Troubleshooting Thermistor error The door is open and the unit is not unplugged Exhaust motor error Damper error Reference Table 6 for proper temperature vs resistance relationsh
23. or to create a trap to prevent sewer gases from entering the ventilation system See Fig 9 5 Connect unit drain to building s main drain Provide slight slope from unit for run off A99268 Fig 9 Condensate Drain With Loop Trap HRV Only WALL CONTROL Types Four remote wall control options are available 1 Basic Control see Table 1 2 OneTouch Control 3 Standard Control includes dehumidistat 4 Latent Control includes humidistat for use with ERV s only Table 1 Basic Control DAMPER FAN MODE OPERATION POSITION SPEED Off Off Closed to outside Off Air exchange with Low outside Open to outside Low Intermittent Alr exchange with Open to outside Low outside Air exchange with High outside Open to outside High Table 2 Recommended Humidity Levels OUTSIDE DOUBLE PANE TRIPLE PANE TEMPERATURE WINDOWS WINDOWS 50 F 10 C 55 65 32 F 0 C 45 55 14 F 10 C 35 45 4 F 20 C 30 45 22 F 30 C 25 35 Location The Standard Control and the Latent Control sense humidity and not temperature They must be located in an area where they will continually monitor fresh air circulating within the home Install ERV HRV wall controls as close as possible to main system 4 thermostat and follow same guidelines as installing a thermostat locate approximately 5 ft 1 5m above floor mount on an inside parti
24. ouse or when sanding drywall This type of dust may damage system Ventilator Sizing Tables 3 and 4 should be used to determine the required airflow for a home These guidelines are taken from ASHRAE 62 2 2004 Table 3 Ventilation Air Requirements cfm FLOOR BEDROOMS AREA ft 9 1 2 3 4 5 6 7 gt 7 lt 1500 30 45 60 75 90 1501 3000 45 60 75 90 105 3001 4500 60 75 90 105 120 4501 6000 75 90 105 120 135 6001 7500 90 105 120 135 150 27500 105 120 135 150 165 Table 4 Ventilation Air Requirements L s FLOOR BEDROOMS AREA m 9 1 2 3 4 5 6 7 27 139 14 21 28 35 42 1391 279 21 28 35 42 50 2791 418 28 35 42 50 57 418 1 557 35 42 50 57 64 557 1 697 42 50 57 64 71 gt 697 50 57 64 71 78 CONTROL BOARD OPERATION Defrost The ERV HRV continually monitors the outside air temperature If the outside air is at or below 23 F 5 C the ERV HRV will initiate a defrost cycle by closing the outside air damper and recirculating warm indoor air through the heat recovery core This happens every 32 minutes with a 6 minute defrost cycle During this process core is defrosted without the use of electric strip heat At 5 F 15 C unit will defrost for 6 minutes every 32 minutes At 17 F 27 C the unit will sense a need to defrost every 20 minutes with a 6 minute cycle See the Troubleshooting section for
25. recovery core which transfers both sensible and or latent heat between the fresh incoming air and stale exhaust air The cross flow design core allows entering and leaving air streams to transfer heat and or latent energy without mixing See Fig 3 FRESH AIR STALE AIR FROM OUTSIDE FROM BUILDING FRESH AIR TO BUILDING STALE AIR TO OUTSIDE A07460 Fig 3 ERV HRV Airflow During Air Exchange Bottom view with access door removed ERV HRV The model operates at 2 airflows 50 CFM in low speed and 100 CFM in high speed This unit comes in two configurations vertical or horizontal Special attention should be given to duct application balancing the ERV HRV and locating unit for easy access and routine maintenance INSTALLATION CONSIDERATIONS Inspect Equipment Move carton to final installation location Remove ERV HRV from carton taking care not to damage unit Remove all packaging and inspect unit for damage Remove parts bag from inside unit File claim with shipping company if shipment is damaged or incomplete Check to make sure ERV HRV unit matches Fig 1 or Fig 2 Select Location The ERV HRV should be located in a conditioned space and in close proximity to a fused power source It should be easily accessible for routine maintenance If ERV HRV is installed independent of a forced air system unit should be located near the center of the air distribution system If ERV HRV is installed in conjunction with a for
26. striction than the fresh air especially in cases of fully ducted installations or source point ventilation Place the magnehelic gauge upright and level Record equivalent AIR FLOW of the reading according to the balancing chart Step 4 Move tubing to FRESH air flow pressure taps Adjust the fresh air balancing damper until the fresh air flow is approximately the same as the EXHAUST air flow If fresh air flow is less than exhaust air flow then go back and adjust the exhaust balancing damper to equal the fresh air flow See Fig 13 Step 5 Secure both dampers thumb screw in place with tape Step 6 Record air flow information Write the required air flow information on a label and stick it near the unit for future reference date maximum speed air flows your name phone number and business address NOTE The unit is considered balanced even if there is a difference of 10 CFM or 5 1 s or 17 m h between the two air flows Balancing Dampers Balancing dampers sometimes called butterfly dampers are located in fresh air intake and stale air exhaust of the ERV HRV See Fig 13 Insulating over these dampers is strongly recommended after balancing is complete to prevent condensation problems ERV HRV ERV HRV VENTILATION EVALUATION CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in reduced unit efficiency capacity or unit life DO NOT use HRV during construction of a h
27. t a filter Vacuum out debris In addition regularly check and clean screens on exterior intake and exhaust hoods when necessary 4 amp CAUTION UNIT COMPONENT DAMAGE HAZARD Failure to follow this caution may result in unit component damage DO NOT clean filters in a dishwasher and DO NOT dry them with a heating appliance or permanent damage will result Blower Motor and Wheel ERV HRV blower motors are factory lubricated for life Lubricating bearings is not recommended However inspect and clean any accumulated dirt and grease from blower motor and wheel annually Cleaning the Core ERV is equipped with a special energy recovery core which utilizes a special membrane and allows transfer of sensible and latent energy The core should always be vacuumed only every 3 months to remove dust and dirt that could prevent transfer of energy See Fig 15 and 16 A05347 Fig 15 ERV Ports on Side Bottom View A05348 Fig 16 HRV Ports on Side Bottom View NOTE The core should only be serviced when outdoor TROUBLESHOOTING epee QD IP P PI Ge ot Candie NOTE Reference Table 5 Troubleshooting Chart yx C AUTION This can be a quick guide in resolving unit problems It is also recommended to review and understand Wall Control Board Operation and Care and Maintenance sections before continuing UNIT COMPONENT DAMAGE HAZARD NOTE If there is a short circuit or an open circuit at thermistor Failure to follow th
28. tioning wall etc Wiring Remove top cover assembly from wall control and pass thermostat wire through hole located on back of control before attaching to wall Connect Y R G and B yellow red green and black between wall control and ERV HRV connector following color code See Fig 5 and 10 Replace top cover assembly NOTE ERV HRV wall control and circuit board operate on 12VDC A98383 Fig 10 Typical Wall Control Operation The Standard and Latent wall controls have 4 basic modes of operation OFF LOW HIGH and INTERMITTENT Be sure that all modes of operation are fully functional See Table 1 indicating standard control operation 1 With switch off ERV HRV is inoperative and the LED is out 2 With switch on LOW ERV HRV continuously exchanges air with outside If control is satisfied blower will run in low speed otherwise blower will run on high speed The LED is illuminated all the time 3 With switch on INTERMITTENT the ERV HRV ex changes air with outside on high speed blower and unit shuts down when control is satisfied The ON LED is illu minated all the time and AIR EXCHANGE LED is illumi nated only when unit is running Humidity Selector The humidity selector is a built in control designed to properly control the level of humidity in the house during the winter and summer months This control helps avoid condensation problems in upper northern regions where indoor humidity is a pro
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