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Lifebreath 1500E-ECM, Installation Manual

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Lifebreath 1500E-ECM Installation Manual Download Page 33

 

www.lifebreath.com

 

 

 

 

Page 14

 

 

F

AN 

D

EFROST 

(A

LL UNITS

) 

 

The 1500I/E-ECM, 2000IFD/EFD, and 2500IFD/EFD units are equipped with an electronically controlled fan 

defrost system to remove frost that collects on the warm air side of the aluminum heat transfer surfaces of the 

heat exchanger core. When the outside temperature drops below 27ºF (-3ºC), a defrost timer is activated 

which provides for an automatic defrost cycle. During the automatic defrost cycle, the fresh air supply is shut 

off while the exhaust fan continues to operate. This allows warm inside air to flow over the heat exchanger 

core, melting any frost accumulation. After the defrost period, the fresh air supply fan automatically returns to 

the normal speed and fresh outside air continues to be drawn into the building. Water from the melted frost 

collects in the bottom drip pans and drains out through the bottom drain connections. The defrost cycle 

repeats automatically until the outdoor air temperature rises above 27ºF (-3ºC). 

 

•

 

If the indoor air temperature is too low, the defrost time may need to be increased. 

•

 

The unit must be mounted level (horizontal) to obtain proper drainage of water from the heat 

exchange cores and drip pans. The warranty will be void if these conditions are not met. 

 

Defrost Time Adjustment  

DIP switch #8 (located on the Aircom circuit board) will adjust the defrost time. Do not change to any other 

DIP switch configuration. 

 

 

 

 

 

 

 

 

 

 

 

 

Factory Setting (DIP switch #8 OFF)

 

The sequence of events for this defrost mode at 

27°F (-3°C) is: 

1.

 

Both fans will stop for one minute. 

2.

 

The HRV exhaust motor will initiate and 

operate for 4 minutes. 

3.

 

Both HRV motors (exhaust and intake) 

will operate for 30 minutes. 

4.

 

The cycle repeats. 

 

Increased Defrost Time (DIP switch #8 ON) 

Cooler climates may require a more aggressive 

defrost cycle: 

1.

 

Both fans will stop for one minute. 

2.

 

The HRV exhaust motor will initiate and 

operate for 4 minutes. 

3.

 

Both HRV motors (exhaust and intake) 

will operate for 20 minutes. 

4.

 

The cycle repeats. 

 
 

Caution

 

•

 

Change DIP switch only as illustrated on this page. Do not adjust any other switches. 

Summary of Contents for 1500E-ECM

Page 1: ......

Page 2: ...w this system will operate if connected to any other piece of mechanical equipment i e a forced air furnace or air handler operating at a higher static pressure After installation the compatibility of the two pieces of equipment must be confirmed by measuring the airflows of the HRV by using the balancing procedure found in this manual Do not apply electrical power to the unit until installation h...

Page 3: ...2 Timers and Repeaters 5 Dehumidistat 9 Aircom Relays Interlocking to a furnace air handler 10 Adjusting the air flow 1500 units 11 Adjusting the Airflow 2000 units 12 Adjusting the Airflow 2500 units 13 Fan Defrost All units 14 Balancing the Airflows 15 Service and Maintenance 1500 Units 17 Service and Maintenance 2000 Units 18 Service and Maintenance 2500 Units 19 Wiring Diagrams 1500I ECM E ECM...

Page 4: ...for the fresh air intake to a minimum A minimum clearance of 40 in 1m on one side of the HRV is recommended to service the heat exchanger cores and the filters Hanging the HRV The HRV should be hung by a threaded rod type assembly which provides a cradle for the unit Note that 4x4s should sit between the metal U channels and the unit to avoid damage to the lip of the cabinet Mounting hardware not ...

Page 5: ... filters Optional Roof Curb Part No 53 1500 Special care and attention should be given to positioning the cross members of the roof curb so that the they line up exactly with the duct openings on the HRV It is also important to ensure that the perimeter of the curb is insulated but the interior of the curb is not This allows heat from the building to prevent freezing of the drain liens and pans No...

Page 6: ... filters Optional Roof Curb Part No 53 2007 Special care and attention should be given to positioning the cross members of the roof curb so that the they line up exactly with the duct openings on the HRV It is also important to ensure that the perimeter of the curb is insulated but the interior of the curb is not This allows heat from the building to prevent freezing of the drain liens and pans No...

Page 7: ... filters Optional Roof Curb Part No 53 2500 Special care and attention should be given to positioning the cross members of the roof curb so that the they line up exactly with the duct openings on the HRV It is also important to ensure that the perimeter of the curb is insulated but the interior of the curb is not This allows heat from the building to prevent freezing of the drain liens and pans No...

Page 8: ... be installed directly on deck having adequate structural strength or on roof supports under deck Securing the Frame To ensure proper mating with unit it is critical that mounting frame be squared to the roof as follows 1 With frame situated level in desired location on roof trusses tack weld one corner of frame 2 Measure frame diagonally from one corner to the opposite corner Repeat with the rema...

Page 9: ...r plenum to the HRV 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 close to the air handler The air handler would have a constant running blower to effectively distribute the fresh air and remove the stale air Balancing dampers would be in both the HRV supply and exhaust ducts between the return air plen...

Page 10: ...www lifebreath com 4 DIMENSIONAL DRAWINGS 1500I ECM Dimensions 1500E ECM Dimensions ...

Page 11: ...www lifebreath com 5 DIMENSIONAL DRAWINGS 2000IFD Dimensions 2000EFD Dimensions ...

Page 12: ...www lifebreath com 6 DIMENSIONAL DRAWINGS 2500IFD Dimensions 2500EFD Dimensions ...

Page 13: ...ves stale room air e g from lunch from storage or copy area and returns to the space an equal amount of fresh outdoor air making the use of an economizer obsolete in conjunction with an HRV Warning At no time should the air handler Total External Static Pressure TESP on the return duct exceed that of the HRV When interlocking a rooftop unit with an ERV take care to ensure the fans of both units op...

Page 14: ...ctly from the return air plenum to the HRV 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 distribute the fresh air and remove the stale air Balancing dampers would be in both the HRV supply and exhaust ducts bet...

Page 15: ...system if the static pressure of the return in the air handler exceeds 0 1 to 0 15 in w g A damper located just prior to the HRV is required to balance the stale air exhausted with the fresh air supply entering the building Return air suction points should be located at the opposite side of the room to the fresh air inlet The inlets may be in the ceiling or high on the walls and fitted with inlet ...

Page 16: ...d when the airflow does not exceed 750 FPM 3 81 m s free area velocity Ducting from the Weatherhoods Galvanized sheet metal ducting with sufficient cross section with an integral single piece vapor barrier should be used to connect the HRV to the weatherhoods A minimum R value of insulation should be equal to 4 RSI 0 75 A good bead of high quality caulking preferably acoustical sealant and taping ...

Page 17: ...2 in rigid tubing not included to the tee connector and connect the other end to the drain spouts 5 Position the tee connector to point upward and connect the drain line 6 Tape or fasten base to avoid any kinks 7 Pour a cup of water into the drain pan of the HRV after the drain connection is complete This creates a water seal which will prevent odours from being drawn up the hose and into the fres...

Page 18: ...circuit board Optional 3 Speed Control 99 500 See Page 22 for installation on circuit board Optional Wireless Timer 99 DET02 See Page 24 for installation Optional Wireless Repeater 99 RX02 See Page 25 for installation Optional 20 40 60 Minute Timer 99 DET01 See Page 26 for installation on circuit board Optional Dehumidistat 99 DH01 See Page 27 for installation on circuit board Third Part Dry Conta...

Page 19: ...oor temperature is below 59 F 15 C Setting the Dehumidistat Press the Dehumidistat button until the dehumidistat indicator light is at the desired humidity setting After a few seconds the dehumidistat indicator light will either flash or be on continuously A flashing light indicates the humidity level is higher than the humidity setting and the unit is operating on high speed ventilation A continu...

Page 20: ...e humidity level is lower than the set point The Dehumidistat will override the current speed setting to HIGH speed The Dehumidistat function can be turned off by pressing the Dehumidistat Button until the dehumidistat light turns off Setting the 20 40 Mode Press the Mode Button until the 20 40 mode indicator light is illuminated The 20 40 mode is a repeating cycle The fan will run at LOW speed fo...

Page 21: ...alled Setting the 20 40 Mode After a fan speed has been selected press the 20 40 button The 20 40 mode indicator light will illuminate The 20 40 mode is a repeating cycle The fan will run at LOW or HIGH speed for 20 minutes then turn OFF for 40 minutes Some units are equipped to recirculate the air in your home during the 40 minute cycle with no ventilation The control will automatically detect th...

Page 22: ...ed location on the wall and mark the wall for the desired screw holes figure C 4 Remove the back plate from the wall and mark the hole for the wires centered between the two screw holes figure B or C 5 Drill two 1 8 in holes for the screws and wall anchors and drill one 1 in x 0 75 in hole for the wires 6 Pull the 3 wire 20 gauge min 100 ft length max through the opening in the wall 7 Connect the ...

Page 23: ...n order to turn the Fan Speed control off 3 Speed Control 99 500 Installation Connect the wires to the R W Y and G terminals on the Aircom circuit board as shown Attention Use 4 wire 20 gauge wire minimum When used in conjunction with the 99 BC02 the BC02 control must be ON for the 99 500 control to operate The 99 BC02 will override the 99 500 control when the Dehumidistat is operating or the cont...

Page 24: ...uminated When the battery in the timer needs to be replaced the red LED Battery Indicator will illuminate When paired to the digital wall control the wireless timer may be moved to a remote location in the home such as a bathroom Wireless timers have an estimated range of 40 ft with no obstructions Replacing the Timer Battery 99 DET02 4 Battery 5 Face plate 6 Back plate a Remove the face plate by ...

Page 25: ...oes not initiate HIGH fan speed ventilation pairing was not successful Un pair the timer and return to step 1 of the pairing procedure and restart the pairing process 8 Pair additional timers as necessary by repeating steps 1 through 8 Un pairing 1 Remove the battery from the back of the timer 2 Press and hold the Select Button on the front of the timer figure A 3 While holding the Select Button r...

Page 26: ...ain control Red Bad The repeater needs to be moved closer to the main control Pairing 1 Turn on the main control by pressing the ON OFF button 2 BC02 BC03 or BC04 control Press the left and right buttons simultaneously on the main control and or The bottom row LED s will begin flashing This indicates that the main control is now in pairing mode 3 The RX02 Repeater must be powered within 16 in of t...

Page 27: ...ation Lockout mode is useful if you wish to disable the timer Enable Lockout Mode by holding the Select Button for 5 seconds Disable Lockout Mode by holding the Select Button for 5 seconds 20 40 60 Minute Timer 99 DET01 Installation Connect the wires from the Y R and G terminals on the timer to the YEL RED and GRN terminals on the circuit board as shown Note Timers mount in standard 2 x 4 electric...

Page 28: ...e top of the control figure A 2 Carefully separate the face plate and the back plate by firmly pulling it apart figure B 3 Position the back plate of the control in the desired location on the wall and mark the wall for the top and bottom screw holes figure C 4 Remove the back plate from the wall and mark the hole for the wires centered between the two screw holes figure C 5 Drill two 1 8 in holes...

Page 29: ...never the HRV is in defrost Contact 2 and 4 These relays initiate whenever the HRV fans are operating Use contact 2 or 4 to interlock the HRV to an Air Handler or Furnace Note Connecting the HRV as illustrated will ensure the Air Handler Blower Motor is operating whenever the HRV is ventilating Caution Consideration must be given to competing air flows when connecting the HRV in conjunction with a...

Page 30: ...ange the airflows on all three of the speeds Please note that this unit has been factory set to obtain 1500 cfm at 1 w g external static pressure Adjustment of the high speed settings will produce higher flows only in situations where the external static pressure is below 1 w g Switch Nominal Air Flow cfm 1 2 OFF OFF 700 ON OFF 900 OFF ON 500 ON ON 500 Switch Nominal Air Flow cfm 5 6 OFF OFF No Ch...

Page 31: ...and adjust the tension in the belt This technique can be used instead of dampers to efficiently balance the HRV system Each motor should never draw more than the rated amps see table below with the doors of the unit closed and attached to the duct system Unit Voltage Vac Rated Amps for Motors MCA MOP One Two 2000IFD 240 9 0 18 0 22 5 30 2000IFD 208 208 3 0 6 0 14 75 20 2000IFD 208SP 208 10 4 20 8 ...

Page 32: ...The factory wired motor speeds are High and Low You may change the factory setting to High and Medium The High Medium Setting can be achieved by switching the RED LOW and BLUE MED wires on each motor Warning Low speed will not be available if this change is made ...

Page 33: ...ntil the outdoor air temperature rises above 27ºF 3ºC If the indoor air temperature is too low the defrost time may need to be increased The unit must be mounted level horizontal to obtain proper drainage of water from the heat exchange cores and drip pans The warranty will be void if these conditions are not met Defrost Time Adjustment DIP switch 8 located on the Aircom circuit board will adjust ...

Page 34: ...r a more accurate balance of the unit 2 Drill a small hole in the duct about 3 16 three feet downstream of any elbows or bends and one foot upstream of any elbows or bends These are recommended distances but the actual installation may limit the amount of straight duct 3 The Pitot tube should be connected to a manometer capable of reading 3 digits of resolution The tube coming out of the top of th...

Page 35: ... 2 ft2 128 cfm For your convenience the cross sectional areas of some common duct sizes are listed below DUCT DIAM inches CROSS SECTION AREA sq ft 5 127 mm 0 14 6 152 mm 0 20 7 178 mm 0 27 The accuracy of the air flow reading will be affected by how close to any elbows or bends the readings are taken Accuracy can be increased by taking an average of multiple readings as outlined in the literature ...

Page 36: ... panel 5 Replace all filters Ensure that filter divider panels are re inserted into unit Servicing Cores 1 Remove core service panel one or both sides 2 Slide cores out regular core maintenance 3 When placing the cores back into the unit ensure that there are no gaps between any of the cores Ensure all H channels are flush with the ends of the cores before the core service panel is re attached Ser...

Page 37: ...ps between any of the cores Ensure all H channels are flush with the ends of the cores before the core service panel is re attached Servicing Blowers 1 Remove blower service panel one or both sides 2 Unscrew the 2 bolts that connect the blower to the blower rails of the unit 3 Remove all wiring to the motors 4 Slide blower back and lift to remove blower assembly 5 If access to the unit is not avai...

Page 38: ...ct 24 x 16 8 4 Filters two 9 Supply Hood c w Bug Screen Services should include Cleaning of screens protecting outside hoods Cleaning of core see below Inspect filters and replace as necessary Wipe down drain pans and inside of cabinet using a mild disinfectant Ensure condensate drain has free flow of moisture Inspect operation of blowers and electric panel Confirm operation Cleaning of Core To ac...

Page 39: ...www lifebreath com Page 20 WIRING DIAGRAMS 1500I ECM E ECM ...

Page 40: ...www lifebreath com Page 21 WIRING DIAGRAMS 2000IFD EFD 208 ...

Page 41: ...www lifebreath com Page 22 WIRING DIAGRAMS 2000IFD EFD 208SP ...

Page 42: ...www lifebreath com Page 23 WIRING DIAGRAMS 2000IFD EFD 460 ...

Page 43: ...www lifebreath com Page 24 WIRING DIAGRAMS 2000IFD EFD 575 ...

Page 44: ...www lifebreath com Page 25 WIRING DIAGRAMS 2500IFD EFD ...

Page 45: ...www lifebreath com Page 26 WIRING DIAGRAMS 2500IFD EFD 208 ...

Page 46: ...age neglect improper care or other failure by the owner to provide reasonable and necessary maintenance of the product any attempt at repair by an unauthorized service representative or not in accordance with this warranty or any other causes beyond the control of AIRIA are excluded from this warranty If you feel that the LIFEBREATH unit you purchased is not free from manufacturing defects please ...

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