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LE6XRT ERV

RENEWAIRE.COM

  

INSTALLATION, OPERATION AND MAINTENANCE MANUAL 

1.800.627.4499

10

OVERVIEW

NOTE: This unit is 

an Energy Recovery 

Ventilator. It is 

commonly referred to 

throughout this manual as 

an “ERV”.

NOTE: There is also 

an indoor version of 

this ERV, known as 

the LE6XIN. It has a 

separate manual.

NOTE: For all models:

RA = Room Air into unit

OA = Outside Air into unit

FA = Fresh Air to inside

EA = Exhausr Air to outside

1.0 OVERVIEW

1.1 DESCRIPTION

1.3 MODELS

1.3.2 LE6XRTH

1.3.1 LE6XRTF

1.2 FACTORY ASSEMBLY OF MODULES

The LE6XRT ERV is a total enthalpy energy recovery ventilator. It recovers both sensible and latent 

energy from a building Exhaust Airstream and transfers that energy into a fresh Outdoor Air stream, 

which it then introduces into the building Supply Air. The result is a constant supply of fresh outdoor 

air in the Occupied Space with very little energy loss, enhancing Indoor Air Quality (IAQ). Each ERV has 

enthalpic cores through which both the EA and SA airstreams pass and each air stream has its own 

fan motor/blower. Each ERV has a high voltage control panel and a separate low voltage terminal strip 

for connection to user-specified control devices.

Fan speed can be adjusted either by means of adjustable sheaves on the fan motors, by means of 

an optional VFD or a combination of microprocessor controls and a VFD. Several control options are 

offered for the unit. 

See Section 2.7 Optional Control Accessories.

The LE6XRT is offered in four different models, the LE6XRTF, the LE6XRTH, The LE6XRTR and the 

LE6XRTV. All four models are intended for rooftop, or outdoor installation, and will generally be in-

stalled on a curb or equipment rails. All four models differ from each other in the locations of the air 

streams ducting. Units that are mounted on a curb may have one or more airstreams ducted through 

the floor of the unit while units that are mounted on rails must be ducted through the side walls.

The LE6XRTH features Room Air (RA) entering on one side of the unit and Fresh Air (FA) exiting on the 

other side. This model is typically mounted on equipment rails.

The LE6XRTF features Room Air (RA) entering on one side of the unit and Fresh Air (FA) exiting through 

the floor of the unit. This model is typically mounted on a curb.

The LE6XRT ERV is built as two modules that are to be assembled in the field. The customer may 

optionally order the modules to be assembled into one unit in the factory. 

See Digit 23 of the Config-

uration Code. 

RA = Room Air into unit

OA = Outside Air into unit

FA = Fresh Air to inside

EA = Exhaust Air to outside

RA

EA

FA

LE-RTV

LE-RTR

LE-RTF

LE-RTH

OA

RA

EA

OA

RA

EA

FA

OA

EA

OA

FA

RA

FA

LE-RT Configurations_DEC15.dwg

RA = Room Air into unit

OA = Outside Air into unit

FA = Fresh Air to inside

EA = Exhaust Air to outside

RA

EA

FA

LE-RTV

LE-RTR

LE-RTF

LE-RTH

O

RA

EA

OA

RA

EA

FA

OA

EA

OA

FA

RA

FA

LE-RT Configurations_DEC15.dwg

LE6XRTH Duct Configuration

LE6XRTF Duct Configuration

Room Air (RA) enters lower right side of unit.

Exhaust Air (EA) exits upper left side of unit.

Outside Air (OA) enters upper right side of 

unit. Fresh Air (FA) exits lower left side of unit.

Room Air (RA) enters lower right side of unit.

Exhaust Air (EA) exits upper left side of unit.

Outside Air (OA) enters upper right side of 

unit.

Fresh Air (FA) exits through the unit floor.

Содержание LE6XRTH

Страница 1: ...INSTALLATION OPERATION MAINTENANCE MANUAL ENERGY RECOVERY VENTILATOR RENEWAIRE COM LE6XRT Model LE6XRTH Shown also available as separate modules for field assembly...

Страница 2: ...MOVING PARTS Disconnect all local and remote power supplies verify with a voltmeter that electric power is off and all fan blades have stopped rotating before working on the unit Do not operate this u...

Страница 3: ...ped by the user to incorporate monthly and seasonal maintenance and include start up maintenance tasks as described in this manual If this unit is installed in an area where it may draw air from a nea...

Страница 4: ...20 6 5 WIRING SCHEMATICS 21 6 6 CONTROL CONNECTIONS 23 7 0 CONTROL CONTRACTOR INFORMATION 23 7 1 24 VAC CLASS II POWER SUPPLY 23 7 2 MOTOR PROTECTION 24 7 2 1 Units Equipped with Motor Starters 24 7 2...

Страница 5: ...Wall Mount Occupancy Sensor 15 LE6XRT Corner Weights 16 Double Flange Duct Connection 19 E Box Main Disconnect Switch 20 E Box with Knockouts on Bottom 20 E Box Low Voltage Terminal Strip 20 24 VAC Po...

Страница 6: ...rstream Disconnect Digit 20 N Non Fused Standard F Fused Unit Control Enhancements Digit 21 T Transformer with Isolation Relay Standard 1 Enhanced Controls 2 Premium Controls 3 Enhanced Controls with...

Страница 7: ...8 970 4 0 1010 4 2 1050 4 5 1090 4 7 1140 5 0 1180 5 3 1230 5 6 1290 5750 4 0 970 4 2 1000 4 4 1040 4 6 1080 4 9 1120 5 1 1160 5 4 1200 5 7 1250 6 0 1300 6000 4 4 1000 4 6 1030 4 8 1070 5 0 1100 5 3 1...

Страница 8: ...6 1 8 X 19 1 2 Opening RA 24 X 32 Opening RA Damper Location Optional 115 1 4 O D 64 1 4 O D 3 60 1 2 I D 17 1 4 33 20 25 9 1 2 A A TOP VIEW CURB LE6X FA RA 1 7 8 3 14 SECTION A A CURB CROSS SECTION A...

Страница 9: ...ng Door Swing Door Swing Door Swing OA OA EA FA RTF 16 1 8 X 19 1 2 Opening 115 1 4 O D 64 1 4 O D 3 60 1 2 I D 17 1 4 33 20 25 9 1 2 A A TOP VIEW CURB LE6X FA RA 1 7 8 3 14 SECTION A A CURB CROSS SEC...

Страница 10: ...LE6XRTV All four models are intended for rooftop or outdoor installation and will generally be in stalled on a curb or equipment rails All four models differ from each other in the locations of the a...

Страница 11: ...unit FA Fresh Air to inside EA Exhaust Air to outside RA EA FA LE RTV LE RTR LE RTF LE RTH OA RA EA OA RA EA FA OA EA OA FA RA FA LE RT Configurations_DEC15 dwg LE6XRTR Duct Configuration LE6XRTV Duc...

Страница 12: ...of the Configuration Code Dampers are specified by the customer at time of order Order options are None Dampers both airstreams Damper EA RA airstream Damper FA OA airstream See digit 18 of the Confi...

Страница 13: ...tivate the unit at user selected times When optional VFDs are ordered and there is no microprocessor controller the optional CO2 sensor or the optional IAQ sensor may be wired directly to the VFD prod...

Страница 14: ...en wired to the ERV low voltage terminal strip each device functions as an ON OFF switch for the ERV but they will not modulate the ERV All of the optional control accessories shown in this section ma...

Страница 15: ...at are equipped with a VFD See the description in Section 2 7 Controls It uses 0 84 VA 2 8 4 Motion Occupancy Control 2 8 5 Smoke Detector A motion occupancy sensor is available as an optional control...

Страница 16: ...LR RR RF ADDITIONAL WEIGHTS FOR OPTIONS lbs Double Wall 418 105 104 104 105 12 10 1 0 1 47 11 1 10 25 58 2 2 27 27 VFDs RA or EA Damper OA or FA Damper Total Selected Weights Add the additional weight...

Страница 17: ...Corner Weights in this manual 4 1 1 Unit Dimensions and Weight 4 1 2 Shipping Dimensions and Weight Upon delivery of the ERV inspect it carefully for shipping damage and completeness Verify the pres e...

Страница 18: ...by others There are a number of situations that may demand relocation The outside air intake must be at least 10 away from exhausts such as dryer vents chimneys furnace and water heater exhausts or o...

Страница 19: ...duct The ducts connecting to the outlets should be straight for a sufficient distance with gradual transitions to the final duct size These guidelines are consistent with SMACNA recommended duct layo...

Страница 20: ...be sure the voltage matches available utility power The line side of the disconnect switch contains live high voltage The only way to ensure that there is NO voltage inside the unit is to install and...

Страница 21: ...R BETWEEN TERMINALS 2 3 FACTORY SETTINGS Overload Relay Trip Settings Motor Nameplate FLA Overload Relay Mode Settings Manual position KEY FA Fresh Outside Air Blower EA Exhaust Air Blower FACTORY WIR...

Страница 22: ...ED JUMPER BETWEEN TERMINALS 2 3 FACTORY SETTINGS Overload Relay Trip Settings Motor Nameplate FLA Overload Relay Mode Settings Manual position KEY FA Fresh Outside Air Blower EA Exhaust Air Blower FAC...

Страница 23: ...n the unit s E Box The unit s power supply system includes isolation relays with contact ratings as low as 50 mA 1 2 VA It is also possible to operate the isolation relays with 24 VAC power from an ex...

Страница 24: ...BMS such as BACnet unless the unit is equipped with microprocessor controls The unit can be controlled by powered or non powered contacts operated by any kind of control system Units that are equipped...

Страница 25: ...TE Some units are equipped with only one VFD which controls a single motor The second motor without a VFD is then protected by an overload relay as described before External control wiring is to be te...

Страница 26: ...on relay for the RA EA blower Supply only 24 VAC not VDC from a Class II power source Use the schematic below if external control is to be applied using 24 VAC from the ERV power supply External contr...

Страница 27: ...Powered Relay Contacts Control with 2 ON Signals External Power Basic Sequence of Operation SOO Operating sequences are different depending on whether the unit is Controlled for simultaneous blower op...

Страница 28: ...through the blower s VFD If that blower is controlled by a motor starter it starts immediately Variable Frequency Drives VFDs When one or both of the blowers are factory provided with VFDs the respon...

Страница 29: ...d with the foam gasketing positioned toward the filter One filter retainer is used for each set of three filters positioned as shown in the installation instructions Proper installation of foam gasket...

Страница 30: ...pers should be tested at start up to verify that the dampers will open fully 9 2 1 Motor Starter Units Units without dampers both motors should begin running immediately Units with dampers dampers sho...

Страница 31: ...p After 30 days of operation Tighten all electrical connections paying special attention to VFD wiring if present Readjust the tension on motor drive belts Check the air filters as part of the normal...

Страница 32: ...west tension at which the belts will not slip under peak load operation For initial tensioning set the belt deflection at 1 64 inch for each inch of belt span measured half way between sheave centers...

Страница 33: ...he load on the bearing Grease is basically a carrier for specific oils that are needed for each application Greases are made with different thickeners and these thickeners are often incompatible with...

Страница 34: ...n on the lubrication schedule you have determined Inject the grease very slowly to avoid damaging the seals Remember that a grease gun can produce up to 15 000 pounds of pressure which can blow out se...

Страница 35: ...bearings is 3 6 months based on 1 000 to 2 000 hours of operation The recommended grease is Mobil Polyrex If Mobil Polyrex is not available use an NGLI 2 grease that is compatible with a lithium thic...

Страница 36: ...c cores for cleaning remove the air filters To clean enthalpic cores all exposed surfaces must be vacuumed with an attachment having long soft bristles The greatest buildup of dirt and dust will norma...

Страница 37: ...LE6XRT ERV 37 1 800 627 4499 INSTALLATION OPERATION AND MAINTENANCE MANUAL RENEWAIRE COM MAINTENANCE 10 8 SERVICE PARTS www renewaire com 800 627 4499 support renewaire com LE6XRT Service Parts...

Страница 38: ...ace significant weight on the plenum dividers They are not intended to be load bearing The fan and fan motor are part of an assembly that is mounted on a sled which is then installed in the ERV on vib...

Страница 39: ...draw six filters at once See image below When installing the filter spacers the foam strip is to be placed against the filter Note that when new filters are installed the filter spacers may tend to fa...

Страница 40: ...The differential static pressures DSP can be measured using the installed pressure test ports shown above Airstream pressure readings are to be taken across the cores by testing at diagonally located...

Страница 41: ...in an exposed position on the collar of the flange To adjust the flanges Remove the drive belt s Loosen the set screws on both adjustable flanges IN HALF TURN INCREMENTS turn the adjustable flanges in...

Страница 42: ...EWAIRE COM INSTALLATION OPERATION AND MAINTENANCE MANUAL 1 800 627 4499 42 MAINTENANCE 11 9 MAINTENANCE RECORDS FILTERS REPLACED DATE CORES CLEANED DATE AIR FILTER REPLACEMENT RECORD ENTHALPIC CORES C...

Страница 43: ...REQUIREMENTS REAR BEARING LUBE REQUIREMENTS MOTOR TYPE REQUIRED LUBRICANT from motor manufacturer s website FRONT BEARING LUBE REQUIREMENTS REAR BEARING LUBE REQUIREMENTS LUBRICATION PERFORMED DATE L...

Страница 44: ...ert workmanship and Quick Response Manufacturing QRM As the pioneer of static plate core technology in North America RenewAire is the largest ERV producer in the USA We re committed to sustainable man...

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