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Residential Energy Recovery Ventilators

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Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, operate or 
maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with these 
instructions will result in voiding of the product warranty and may result in personal injury and/or property damage.

Models ASSURE-120S-S1, SYNC-110SE-S1, 

SYNC-180SCE-S1 and SYNC-270TCE-S1

Residential Energy Recovery Ventilators

Table of Contents

Shipping and Packing List..................................................................................................................... 

2

General Information............................................................................................................................... 

2

Model Numbers and Descriptions......................................................................................................... 

2

Model Number Nomenclature Breakdown............................................................................................ 

3

Terms and Definitions............................................................................................................................ 

3

Application............................................................................................................................................

3

Required Tools and Materials................................................................................................................ 

3

Specifications........................................................................................................................................

4

Optional Fan Curve Speeds.................................................................................................................. 

6

Dimensional Drawings........................................................................................................................... 

7

Defrost Overview................................................................................................................................... 

8

Required Ventilation............................................................................................................................... 

9

How the Dehumidistat Works................................................................................................................ 

10

Two-Speed Switch with Intermittent Mode (435246)............................................................................. 

11

Two-Speed Switch with Humidity Sensor (435245)............................................................................... 

11

PrecisionSYNC Control (435244).......................................................................................................... 

12

20/40/60 Minute Timer (435247)........................................................................................................... 

13

20/40/60 Minute Wireless Timer (435248)............................................................................................. 

13

Wireless Repeater (435249)................................................................................................................... 

13

Overview of Installation Methods.......................................................................................................... 

14

Connecting the Ductwork...................................................................................................................... 

14

Shaping Ducting to Fit Oval Ports......................................................................................................... 

14

Installation Methods - Simplified (Return/Return)................................................................................. 

15

Installation Methods - Partially Dedicated............................................................................................. 

16

Installation Methods - Fully Dedicated.................................................................................................. 

17

Unit Installation Location and Restrictions............................................................................................ 

18

Suspending the Unit.............................................................................................................................. 

18

Mounting the Unit.................................................................................................................................. 

19

Installing the Drain Connection (Optional)............................................................................................. 

19

Installing Drain Plug (Optional).............................................................................................................. 

20

ERV Dual Intake and Exhaust Hood Kit................................................................................................. 

20

Terminal Blocks..................................................................................................................................... 

21

Installation of Controls........................................................................................................................... 

21

Installation and Operation of 20/40/60 Minute Wireless Timer (435248).............................................. 

22

Installation and Pairing of Wireless Repeater (435249)......................................................................... 

23

Installation of 20/40/60 Minute Timer (435247)..................................................................................... 

24

Installation of Third Party Mechanical Timers.......................................................................................  

24

Interlocking ERV to Air Handler/Furnace Blower................................................................................... 

24

Electrical Connections........................................................................................................................... 

25

Unit Dip Switch Orientation................................................................................................................... 

28

Adjusting the EC Motor (SYNC-110SE-S1)........................................................................................... 

29

Balancing the Airflows........................................................................................................................... 

29

Manual Balancing.................................................................................................................................. 

29

Precision Balancing............................................................................................................................... 

31

Troubleshooting.....................................................................................................................................

32

Homeowner Maintenance Information.................................................................................................. 

33

Summary of Contents for ASSURE-120S-S1

Page 1: ...wo Speed Switch with Humidity Sensor 435245 11 PrecisionSYNC Control 435244 12 20 40 60 Minute Timer 435247 13 20 40 60 Minute Wireless Timer 435248 13 Wireless Repeater 435249 13 Overview of Installa...

Page 2: ...d for ceiling mounting in single family or multi unit residential buildings Fan defrost unit with no balancing or drains required SYNC110 SYNC 110SE S1 50 130 CFM compact high efficiency Energy Recove...

Page 3: ...r fan operation to be initiated For example the ERV is set to Continuous Ventilation Operation Mode at speed 0 Thermistor This is the temperature sensor that measures electrical resistance as outdoor...

Page 4: ...78 49 CFM 23 L s 75 64 CFM 30 L s 87 64 CFM 30 L s 81 Sensible Recovery Efficiency 32 F 0 C 49 CFM 23 L s 69 49 CFM 23 L s 72 64 CFM 30 L s 84 64 CFM 30 L s 77 Adjusted Sensible Recovery Efficiency 13...

Page 5: ...filter is installed for the first time airflow will need to be balanced Condensate Drain Connections Spouts qty 2 1 2 o d Drain Tee qty 1 1 2 o d No No No Yes optional use Drain Plug Included No No N...

Page 6: ...7 46 42 20 102 48 215 101 0 6 150 92 43 89 42 202 95 0 7 175 87 41 76 36 192 90 0 8 200 80 38 63 30 177 83 0 9 225 72 34 49 23 165 78 1 0 250 34 16 155 73 Speed 3 Medium IN WG PA CFM L s CFM L s CFM L...

Page 7: ...IDE VIEW 10 in 254 mm 22 in 559 mm 6 in 152 mm Collars Collar mounted balancing ports Core Motorized Impellers Filters Stale Air to Outside Airflow Fresh Air from Outside Stale Air from Inside Fresh A...

Page 8: ...SYNC 270TCE S1 During defrost a motor driven damper door mechanism closes off the supply air from outside allowing exhaust air to recirculate through the unit s core During the defrost portion of the...

Page 9: ...0 X 0 03 4 1 X 7 5 97 5 Table Method Example a 2000 square foot building with 4 bedrooms from Section 4 1 1 Table 4 1a a quick reference table predicts 98 cfm The following table complies with ASHRAE...

Page 10: ...vious setting It is recommended to operate the ERV for the first few days without use of the dehumidistat function to observe if a further dehumidification effect will be required The dehumidistat ope...

Page 11: ...amper defrost models Table 7 Two Speed Switch with Humidity Sensor Settings Settings Icon Description Turning on the Control Press and release the ON OFF button The light above will illuminate Setting...

Page 12: ...time interval selected When the timer runs out the unit will return to its previous operating speed Setting the Mode of Operation There are five modes of operation available with the PrecisionSYNC Co...

Page 13: ...have an estimated range of 40 feet 12 meters with no obstructions To increase the range of the timer a Wireless Repeater may be used Multiple timers can be paired to a single control They are designed...

Page 14: ...gth approximately 12 inches 300 mm of non metallic flexible duct should be connected between the ERV and the supply exhaust duct system to avoid possible noise transfer through the duct system All duc...

Page 15: ...tion may change depending on the ERV model See specifications for your unit Check local codes and authority having jurisdiction for acceptance Installation Methods Simplified Return Return Figure 13 S...

Page 16: ...ler Furnace Blower on page 24 The duct configuration may change depending on the ERV model See specifications for your unit Check local codes and authority having jurisdiction for acceptance Installat...

Page 17: ...igures KEY POINTS The ERV unit must be balanced The duct configuration may change depending on the ERV model See specifications for your unit Check local codes and authority having jurisdiction for ac...

Page 18: ...or during adjustment of the straps 4 Level the unit from left to right and front to back Adjust the unit down by lifting up on the buckles Adjust the unit up by pulling down vertically on the hand loo...

Page 19: ...trated in Figure 23 Drain Holes and P Trap 1 Cut two lengths of hose and connect each piece to an end of the T fitting then connect the other ends to the two drain spouts 2 Position the T fitting to p...

Page 20: ...aust The pressure drop airflow charts should be referred to when matching the Dual Intake and Exhaust Hood to the ERV The Dual Intake and Exhaust Hood Kit is compatible with 5 or 6 diameter duct ERV D...

Page 21: ...through the opening in the wall 8 Connect red green and yellow to the wiring terminals located on the back plate Figure 29 Boxes D E or F 9 Attach the back plate to the wall using two supplied screws...

Page 22: ...If pairing was not successful you now must return to step 1 to restart the pairing process 6 Press the button on the control to exit pairing mode when wireless timers have been successfully paired To...

Page 23: ...e Wireless Timer and Control To pair additional Wireless Repeater 435249 with the same control repeat steps 1 5 until all Wireless Repeaters 435249 have been paired When installed in its permanent loc...

Page 24: ...Only The ERV is compatible with two wire dry contact third party mechanical timers This may be useful for retrofit situations where only two wires are available for the timer Install the two wire time...

Page 25: ...setting the control to ON and selecting speed 0 Timers will initiate high speed ventilation when activated CAUTION Building codes in some areas require fully off functionality Check with your local b...

Page 26: ...nit Wiring Diagrams Applicable Unit ASSURE 120S S1 Applicable Unit SYNC 110SE S1 Figure 37 ASSURE 120S S1 Wiring Diagram Figure 38 ERV 110E S1 Wiring Diagram Residential Energy Recovery Ventilators 26...

Page 27: ...otor Damper Defrost Units Only BLUE BLACK WHITE WHITE Door Switch Note If any of the original wires supplied must be replaced use only TEW certified wire Important Control wiring low voltage communica...

Page 28: ...Defrost cycle enabled Dip 2 Null Switch 2 Dip 1 On R2000 Defrost cycle disabled Dip 1 Off R2000 Defrost cycle enabled Dip 2 Null Switch 1 Auto balance Unit Selection Switch 1 Auto balance Unit Select...

Page 29: ...Gauge A digital manometer is a suitable instrument for the balancing of airflows Gauge Attachments When sampling an airflow various attachments are available for use on a digital manometer The illust...

Page 30: ...Air to Inside stream 4 Review the readings and damper down the duct with the highest duct velocity pressure Repeat Steps 2 and 3 until both ducts show identical readings Upon completion of balancing...

Page 31: ...et value CFM Pause until the airflow values CFM have stabilized Airflow values CFM increase and decrease in increments of 5 CFM CFM fluctuations of 10 CFM from target is acceptable A Balance Indicator...

Page 32: ...tc Occupant Lifestyle Moisture coming into the home from an non vented or non heated crawl space Moisture remaining in washroom and or kitchen areas Condensation seems to form in the spring and fall s...

Page 33: ...d any debris 4 Install clean core as follows a Install the bottom flange of the core guide into the bottom H channel approximately 1 4 6 mm b Install the left or right side flange of the core guide ap...

Page 34: ...attached firmly Seal and tape insulation and moisture barrier not applicable for SYNC 270TCE S1 A capable HVAC service company will best perform this procedure Homeowner Maintenance Information conti...

Page 35: ...al and Commercial Fans provides additional safety information This publication can be obtained from AMCA International Inc at www amca org As a result of our commitment to continuous improvement Green...

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