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EFROST

The 330, 530, 730, and 1230 units are equipped with an electronically controlled fan defrost system to remove

frost that collects on the warm air side of the heat exchanger core. When the outside air temperature drops

below 27°F (-3°C), defrost 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 through the heat exchanger core melting 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. The defrost cycle repeats automatically until the air temperature rises above 27°F (-3°C).

•

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. 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:

Both fans will stop for one minute.

The ERV exhaust motor will initiate and

operate for 4 minutes.

Both ERV motors (exhaust and intake)

will operate for 30 minutes.

The cycle repeats.

Increased Defrost Time (DIP switch #8 ON)

Cooler climates may require a more aggressive

defrost cycle:

Both fans will stop for one minute.

The ERV exhaust motor will initiate and

operate for 4 minutes.

Both ERV motors (exhaust and intake)

will operate for 20 minutes.

The cycle repeats.

Caution

•

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

Содержание 1230 ERV

Страница 1: ......

Страница 2: ...the balancing procedure found in this manual Never install a ventilator in a situation where its normal operation lack of operation or partial failure may result in the back drafting or improper functioning of vented combustion equipment Unit must be installed level to ensure proper condensate drainage Due to the broad range of installation and operational conditions consider the possibility of co...

Страница 3: ...rilles 10 9 Electrical Connections 11 10 Functions and Controls 12 11 Main Wall Control 13 10 Timers and Repeaters 18 11 Aircom Relays Interlocking to a furnace air handler 22 12 Balancing the Airflows 24 14 Service and Maintenance 26 15 Reverse Installation of the ERV 28 16 Troubleshooting 29 18 Wiring Diagrams 330ERV 31 17 Wiring Diagrams 530ERV 32 17 Wiring Diagrams 730ERV and 1230ERV 33 18 War...

Страница 4: ...o a minimum A minimum clearance of 30 inches 76 cm in front of the unit is recommended to service the heat exchanger cores and the filters The unit may be mounted on an equipment platform providing the drain hoses are clear and there is enough space to open the doors for servicing Saddle Installation 1 Threaded rod not supplied 2 Vibration isolators not supplied Hang unit with suspended rods and U...

Страница 5: ...erly sized are recommended Keep ducting as short as possible and use a minimum of elbows and tees Connecting sections and shorter runs may be flexible ducting one size larger than the metal equivalent Use flexible duct connectors at the ERV to avoid noise transmission All duct joints must be secured with screws rivets or duct sealant and sealed with aluminum duct tape to prevent leakage Attention ...

Страница 6: ...www lifebreath com 5 3 DIMENSIONAL DRAWINGS 330ERV Dimensions 530ERV Dimensions ...

Страница 7: ...www lifebreath com 6 3 DIMENSIONAL DRAWINGS 730ERV Dimensions 1230ERV Dimensions ...

Страница 8: ... exhaust removes stale room air eg from lunch room 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 ERV Note At no time should the air handler T E S P on the return duct exceed that of the ERV Caution When interlocking a rooftop unit with an ERV take care to ensure the fans of both units operate in th...

Страница 9: ...llations 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 ERV as it is drawn back to the air handler Fresh air supplied by the ERV 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 dist...

Страница 10: ...eturn 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 ERV is required to balance the stale air exhausted with the fresh air supply entering the building Return air suction points should be located on the opposite side of the room from the fresh air inlet The inlets may be in the ceiling or high on the walls and fitted wit...

Страница 11: ...sufficient cross section with an integral single piece vapor barrier should be used to connect the ERV 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 with a high quality aluminum foil tape is recommended to seal the duct to both the ERV and the weatherhood Techgrilles The use of balanci...

Страница 12: ...er probe to ground The black line should be live If the white line is live the polarity is reversed and must be corrected If both lines are live the voltage is not 120VAC The black open line from the unit should be connected to the live line and the white open line should be connected to the neutral line Some unit have a safety disconnect rocker switch located just outside of the electrical contro...

Страница 13: ...sor Board Optional Ventilation Control 99 BC02 99 BC03 or 99 BC04 See Page 16 for installation on circuit board Optional 3 Speed Control 99 500 See Page 17 for installation on circuit board Optional Wireless Timer 99 DET02 See Page 19 for installation Optional Wireless Repeater 99 RX02 See Page 20 for installation Optional 20 40 60 Minute Timer 99 DET01 See Page 21 for installation on circuit boar...

Страница 14: ...tdoor 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 conti...

Страница 15: ... 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 for...

Страница 16: ...lled 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 thi...

Страница 17: ... 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 wi...

Страница 18: ...le OFF button in 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 BC04 the BC04 control must be ON for the 99 500 control to operate The 99 BC04 will override the 99 500 control when the control is set to HIGH...

Страница 19: ...minated 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 s...

Страница 20: ...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 reins...

Страница 21: ...ll control Red Bad The repeater needs to be moved closer to the main wall 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 ...

Страница 22: ...tion 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 electrica...

Страница 23: ...ever the ERV is in defrost Contact 2 and 4 These relays initiate whenever the ERV fans are operating Use contact 2 or 4 to interlock the ERV to an Air Handler or Furnace Note Connecting the ERV as illustrated will ensure the Air Handler Blower Motor is operating whenever the ERV is ventilating Caution Consideration must be given to competing air flows when connecting the ERV in conjunction with an...

Страница 24: ...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 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...

Страница 25: ... 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 the p...

Страница 26: ...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 s...

Страница 27: ...exchanger core can be removed to provide more room See ERV Core in this section The motor is a permanent split capacitor type PSC which uses a sleeve mechanism to steady the shaft ERV Core Remove core s and vacuum or use low pressurized air to clean core s Do not wash or submerse in water With the core s in its proper position place the bottom corner into its guide rail support then place the left...

Страница 28: ... has been installed in It can be as often as one two months or at the very least cleaned every six months Duct Work It is a good idea to inspect ducting outside weather hoods wall caps and grilles for blockage and dirt buildup at least every six months Outside weatherhoods should be protected by a bird screen which can plug up with debris Also it is a good idea to visually confirm that the fresh a...

Страница 29: ...ally removed from 2 Route wires for both blower motors to opposite side of ERV cabinet where electrical box is to be installed 3 Install the grounding continuity screw in both the upper and lower blower assemblies on the opposite side of the ERV where electrical box is now installed 4 Fasten the electrical box to the cabinet of the ERV using the 4 screws that were previously removed 5 Remove the s...

Страница 30: ...st dampers Have electrician check supply voltage Check duct installation Increase the speed of the ERV Have contractor balance ERV Supply air feels cold Poor location of supply grilles the airflow may irritate the occupant Outdoor temperature extremely cold Locate the grilles high on the walls or under the baseboards install ceiling mounted diffuse or grilles so as not to directly spill the supply...

Страница 31: ...ible use of a bathroom fan for short periods will remove additional moisture On humid days as the seasons change some condensation may appear but the homes air quality will remain high with some ERV use Increase speed of the ERV Humidity levels are too low Blower speed of ERV is too high Lifestyle of occupants ERV airflows may be improperly balanced Decrease ERV blower speed Humidity may have to b...

Страница 32: ...www lifebreath com 31 18 WIRING DIAGRAMS 330ERV ...

Страница 33: ...www lifebreath com 32 17 WIRING DIAGRAMS 530ERV ...

Страница 34: ...www lifebreath com 33 17 WIRING DIAGRAMS 730ERV AND 1230ERV ...

Страница 35: ...ge 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 r...

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