RenewAire EV450IN Installation And Operation Manual

INSTALLATION AND OPERATION MANUAL

EV450IN

NOTE: Disconnect Switch and 24V Transformer Standard

4510 Helgesen Drive, Madison, WI 53718 (608) 221-4499, (800) 627-4499, Fax: (608) 221-2824 support@renewaire.com www.renewaire.com

RISK OF FIRE, ELECTRIC SHOCK, OR INJURY.

OBSERVE ALL CODES AND THE FOLLOWING:

1. Before servicing or cleaning the unit, switch power off at disconnect switch or service panel and lockout/tag-out to prevent power from being switched on accidentally. More than one disconnect switch may be required to de-energize the equipment for servicing.

2. This installation manual shows the suggested installation method. Additional measures may be required by local codes and standards.

3. Installation work and electrical wiring must be

done by qualied professional(s) in accordance

with all applicable codes, standards and licensing requirements.

4. Any structural alterations necessary for installation must comply with all applicable building, health, and safety code requirements.

5. This unit must be grounded.

6. Sufcient air is needed for proper combustion and

exhausting of gases through the ue (chimney) of fuel

burning equipment that might be installed in the area affected by this equipment. If this unit is exhausting air from a space in which chimney-vented fuel burning equipment is located, take steps to assure that combustion air supply is not affected. Follow the heating equipment manufacturer’s requirements and the combustion air supply requirements of applicable codes and standards.

7. Use the unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer.

8. This unit is intended for general ventilating only. Do not use to exhaust hazardous or explosive materials and vapors. Do not connect this unit to range hoods, fume hoods or collection systems for toxics.

9. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.

10. This unit must be properly ducted to the outdoors.

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To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc., out of unit.

Placement of the EV450IN

The EV450IN is designed for installation indoors.

Select a location that is central to the inside duct runs, and close to both the exhaust duct (to the outside) and the fresh air duct (from the outside). The unit can be installed in any orientation but the contractor is responsible for safe installation of the unit.

For maximum air performance minimize the number of elbows, and do not place elbows within three feet of the EV450IN’s discharges. For applications where duct noise is a critical issue, use noise attenuating techniques such as duct isolation, insulation, and proper duct design per SMACNA or ASHRAE standards.

Ducts to the Outside

The EV450IN requires four ducts:

Exhaust Air Duct (insulated duct from unit to outside); Outside Air Duct (insulated duct from outside to unit); Room Air Duct (from room to unit); Fresh Air Duct (from unit to room).

Ducts from unit to the outside must be insulated with sealed vapor barrier on both inside and outside of the insulation or with closed-cell foam insulation. We recommend you use either:

8” X 12” insulated duct OR

10” I.D. exible insulated duct

The exhaust outlet and fresh air inlet on the outside of the building should be at least ten feet apart to avoid crosscontamination. The exhaust outlet should not dump air into an enclosed space or any other structure. The inlets and outlets should be screened against insects and vermin and shielded from the weather to prevent the entry of rain or snow.

Using Flex Duct to connect EV450IN to outside

When connecting 10” exible insulated duct to the Exhaust Air

and Outside Air ports on the unit use the optional Duct Adapter Kit

(45EVT10) (or fabricate equivalent). Duct need not be exible,

but must have continuous vapor barrier on both inner and outer face of insulation. Position the duct adapters over the openings. Install them with supplied self-drilling screws.

Keep insulated duct runs as short and direct as possible. Suspend or support duct per manufacturer’s instructions.

The fresh air inlet should be at least 10’ away from chimneys, furnace and water heater exhausts, and other sources of carbon monoxide, humidity or other contamination. Do not locate the fresh air inlet where vehicles may be serviced or left idling. Never locate the fresh air inlet inside a structure.

Do not vent exhaust duct up through roof. Condensate will form in cold weather and run back into unit. Instead, slope duct slightly downhill to a horizontal-discharge wall cap, which will allow any condensate to drain to the outside.

NOTE: To prevent the entry of rain through the outside air inlet duct, observe the following:

1. velocity at face of inlet hood should not exceed 500 feet per minute (fpm)

2. inlet duct must be at least 12” inside diameter

3. centerline length along duct from weather hood to unit inlet must be at least 48”

4. centerline of inlet hood must be at least 18” below the centerline of the unit inlet

5. outlet duct must pitch downward to the outside with a slope of at least ¼” to the foot

Mounting the EV450IN

The EV450IN has integral anges for mounting to a wall (Figure 1)

or hanging from a ceiling (Figure 2). An optional hanging bracket kit, 45EVHB, is available for hanging the unit from a ceiling with doors opening horizontally (Figure 3). The 45EVHB kit can also

be used for oor mount legs (Figure 4). With all installations, adequate clearance for the lter access door latches must be

provided.

The EV450IN unit includes a hardware kit that includes four rubber isolation mounts and eight washers. Figures 5 and 6 show how to install this mounting hardware for different installations. Please note that the threaded rod, bolts, nuts, or other fasteners are not included. If hanger bolts or threaded rod are used each must be capable of carrying the weight of the unit and must be no less than 3/8” diameter.

Figures 7 and 8 show the rubber door keepers. In order to remove doors these keepers must be removed.

The EV450IN weighs approximately 140 lbs. It is the installer’s responsibility to make sure that the screws or bolts used for securing the units are properly selected for the loads and substrates involved. Secure the EV450IN so that it cannot fall or tip in the event of accident, structural failure or earthquake.

Do not stand on the unit. Do not stack or store items on the unit when installed.

Tape both inner and outer vapor barriers of insulated duct to collars on duct adapters and on wall caps. This is critical to prevent migration of moisture into insulation. Build-up of moisture can result in failure of the duct system and/or frost in the insulation. Make sure any tears in the inner and outer vapor barriers are sealed.

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Provide Adequate Service Access for Maintenance

The EV450IN will require regular lter and core

inspections. Install the EV450IN where you can remove

the doors for cleaning the core and replacing the lters,

and where you can get at the wiring for installation and service.

Figure 1. Unit mounted to wall

using integral mounting anges.

Figure 2. Unit hung from ceiling

using integral mounting anges.

Figure 3. Unit hung from ceiling using optional hanging bracket kit, 45EVHB. To install hanging bracket, identify the corners of unit you wish to hang it from. Remove existing screws from unit pan. Attach hanging bracket to unit using screws provided with the hanging bracket.

Figure 4. Unit secured to oor

using optional hanging bracket kit, 45EVHB.

Figure 5. Hardware kit included with unit and installed on integral mounting

ange for wall installation. Note:

threaded rod, bolts, nuts, and other fasteners are not included in kit.

Figure 6. Hardware kit shown installed on optional hanging bracket for ceiling installation.

Figure 7. Rubber Door Keeper installed on Blower Access (large) Door.

Figure 8. Rubber Door Keeper installed on Filter Access (small) Door.

Inside Ductwork System

Use optional 8” X12” to 10” round transitions (45EVT10) (or fabricate equivalent) to connect 10” duct to Room Air and Fresh Air Ports on unit. Position duct adapters over openings. Install with supplied self-drilling screws.

Use optional 8” X 12” duct ange (45EVDF) to connect 8” X 12”

duct to Room Air and Fresh Air Ports on unit. Position duct adapters over openings. Install with supplied screws.

Or fabricate equivalent, by forming a ange on the rst duct section

and screw it to the EV450IN. Make sure appropriate duct sealant or tape is used to provide an air tight seal.

NOTE: If the inside ducts run through un-conditioned spaces they must be insulated with a sealed vapor barrier on both inside and outside of insulation. In a heated space, uninsulated duct is acceptable, but insulated duct resists break out noise better. Duct sealing improves ventilation performance.

Most installations will not require complicated duct systems to provide good ventilation performance. If ventilating several spaces, evaluate whether the air in the spaces is regularly mixed by the heating/cooling system; if not, provide a room air pick-up and fresh air supply in each space. If air is regularly mixed by the heating/cooling system, one room air pick-up and one fresh air supply may be all that is needed.

Connecting to an existing air-circulation system

It is often convenient and effective to connect the Fresh Air duct from the EV450IN to a return duct of an existing heating/cooling system. This way, whenever the heating/cooling system is running, fresh air from the EV450IN is distributed throughout the area served by the heating/cooling system.

Connect the Fresh Air duct to a branch return duct at some distance from the heating/cooling system’s air handler. This minimizes the amount of air that the air handler can pull through the EV450IN when outside air ventilation is not desired.

If the EV450IN is running when the main air handler is not, fresh

air will ow into the space through the branch’s return grille.

Choose the return branch for your connection accordingly (see next paragraph).

Ducting Fresh Air Directly into Space

In cold or hot weather, the fresh air will be somewhat cooler or warmer than the room air (though always much closer to room temperature than the outside air!). Avoid complaints by locating the Fresh Air supplies where they will not blow directly on occupants.

See drawings below for examples of some common installation approaches:

Unit connected to Return Duct of nearby AHU. AHU must operate when EV450 runs.

Unit with dedicated ducts collecting Room Air. Fresh Air is ducted into horizontal return connection of AHU.

EV450IN

EAFA

AHU

Stand-alone installation with independent ducts for exhaust and supply air.

EV450IN

EA FA

OARA

EAFA

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EV450IN Dimensions

EV450IN Product Conguration Chart

1-5 MODEL:"EV450"

6 CORE: "J" = G5

FEATURES

STANDARD

MODEL NUMBER

"1" = 115V, "4" = 460V, "5" = 208-230V

"-" = STANDARD EV450 MOTORS

OPTIONAL FEATURES

"E" = ECM DIRECT DRIVE MOTORS

MULTIPLE-CHOICE OR

UNIT CONTROL

"A" = STANDARD UNIT CONTROL WIRING "Tor G" = TERMINAL STRIP FOR ECM MOTORS(determined by RenewAire at time of purchase)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

RESTRICTIONS 6 & 7

J - - -

11WALL TYPE: "S" = SINGLE, "D" = DOUBLE

10 UNUSED IN EV450 MODELS

16-18 UNUSED IN EV450 MODELS

7-8INDOOR/OUTDOOR: "IN"

- -

12PHASE: "1" = SINGLE-PHASE, "3" = THREE-PHASE

13VOLTAGE: (SEE RESTRICTIONS 2,& 3)

15EA HORSEPOWER14 FA HORSEPOWER

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21 OPTION 1: 24V TRANSFORMER

"T" = TR (TRANSFORMER WITH ISOLATION RELAY)

-E V 4 5 0 I N

25 SAFETY LISTING (RESTRICTION 15)

"L" = LISTED "N" = NON-LISTED

OPTION 4: OTHERS

"-" = NONE, "W" = WHITE PAINT, "C" = CUSTOM PAINT "X" = CUSTOM UNIT

23 OTHER OPTIONS (RESERVED)

"-" = NONE

DISCONNECT

"N" = NON-FUSED (STANDARD) "F" = FUSED

RESTRICTIONS:

1: -

22UNUSED IN EV450 MODELS

2: VOLTAGE CODE "1" AVAILABLE WITH PHASE CODE "1" (SINGLE-PHASE) ONLY.

3: VOLTAGE CODE "4" AVAILABLE WITH PHASE CODE "3" (THREE-PHASE) ONLY.

4. -

5: -

6: VOLTAGE CODES "1" AVAILABLE ONLY WITH FA/EA HORSEPOWER CODES "EE".

7: MOTOR CODE "EE" (ECM MOTORS) AVAILABLE ONLY WITH PHASE CODE "1" (SINGLE PHASE)

8:-

9: -

10:-

11:-

12: -

13: -

14: -

15: SOME UNITS WITH CUSTOM "X" CODE ARE NOT SAFETY LISTED.

Sound Attenuation

General Practices

Take these simple steps to attenuate noise from the unit.

Outside the building:

Exhaust velocity noise is the primary cause of unit-related noise outside the building. Size the exhaust duct and grille for less than 1000 fpm air velocity. When practical, orient the exhaust air hood to point away from houses or public areas.

Ducts:

Make sure the ductwork at the unit outlets is stiff enough to

resist the exure and resulting booming associated with system start-up and shut-off, as well as the turbulent ow conditions at

the blower outlets.

In general, provide smooth transitions from the ERV’s outlets to the duct. The ducts connecting to the outlets should be straight for a

sufcient distance, with gradual transitions to the nal duct size.

These guidelines are consistent with SMACNA recommended duct

layout practices for efcient and quiet air movement. Follow

SMACNA guidelines.

Before bringing power to the unit check unit nameplate

to conrm it matches the voltage and phase of the

power you are supplying.

Remember that your eld connections need to be

accessible for inspection.

Follow these steps:

1. Conrm the voltage of the power supply matches the unit.

2. Remove both unit access panels, i.e., the larger motor door

and small lter door.

3. Remove electrical box cover by removing two or three

screws. Connect the units power eld wiring to the terminals

of the disconnect switch.

4. Connect service ground to ground wire pigtail.

5. Connect the control system to the pigtails in the control voltage compartment of the units electrical box. Make sure you are connecting the correct voltage, 24VAC, to the control pigtails. See Control Wiring Schematics.

Radiated Noise

The EV450IN is insulated with high-density berglass. This provides signicant attenuation of radiated sound.

The outlet ducts can be signicant sources of radiated sound

as well. The FA and EA ducts (outlet ducts) should be insulated for sound control. This insulation should start at the unit. At a

minimum the rst ten feet of duct should be insulated. All parts

of the FA and EA ducts located in the mechanical space should be insulated for sound control, both to minimize sound radiation out of these ducts and also to control sound radiation into the ducts.

Aerodynamic (Velocity) Noise

When sound attenuation is a design concern, the primary consideration is velocity noise at the unit’s Fresh Air blower outlet. The average velocity at the blower outlets is 1100 FPM when the unit is operating at 600 CFM.

Electrical Specications

NOTE: If your unit is equipped with ECM Motors, please refer to “ECM Motor Manual Supplement for RenewAire Light Commercial Units” for more detail.

Use conduit, strain reliefs, etc. as required by code to secure the

eld wiring.

Electrical Options are identied on the Unit Label located near

electrical box on the outside of the unit. Find the complete Unit Model Number in the lower left corner of the Unit Label. Use

the conguration chart to the left to determine motor power and

voltage installed in your EV450IN.

You must make sure to provide the correct voltage and phase power supply. Installing the incorrect voltage and phase will destroy the motor and possibly lead to injury!

Performance

Airow

*ERV component performance at AHRI 1060 standard conditions.

ESP in.

CFM

225 1.25 335 300 181 81 76/66 338 1.00 420 370 278 77 71/61 380 0.90 470 405 340 75 69/59 450 0.65 550 470 430 73 66/56 540 0.25 640 560 540 70 62/52 575 0.00 690 600 610 69 61/51 600 -0.25 735 635 664 68 60/50

H20

Watts 1PWatts

277V

Watts 3PTemp

EFF%

Total EFF%

Winter/Summer*

Danger of Electrical Shock when servicing an installed unit.

ALWAYS DISCONNECT POWER SOURCE BEFORE SERVICING! More than one disconnect switch may be required.

Proper Wiring Size Selection and Wiring Installation are the Responsibility of the Electrical Contractor.

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Make sure clean lters are installed before balancing airow. Dirty or clogged lters reduce airow through

the unit.

Airow Performance

Use the pressure taps in the core and lter doors to determine the airow. Figure 1 translates the pressure drop across the energy recovery core to the actual airow volume.

Equipment Required

• Magnehelic gauge or other device capable of measuring 0-1.5 in. water of differential pressure.

• 2 pieces of exible tubing, 1/8” ID, 1/16” wall works best. NOTE: Be sure to remove cap from pressure port before inserting tubing. Insure tubing is well seated in pressure ports. NOTE: The tubing should extend in the pressure port approximately 1 inch.

Cross Core Static Pressure Measurement Instructions

• The individual differential static pressures (DP) are measured using the installed pressure ports located in the front of the units core access doors. NOTE: These ports are carefully located on the unit to give the most accurate airow measurement. NOTE: Do not relocate pressure ports.

• To read SCFM of Fresh Air (FA) install the “high” pressure side (+) of your measuring device to the Outside Air (OA) port and the “low” pressure side (-) to the Fresh Air (FA) port.

• To read SCFM of Room Air (RA) install the “high” pressure side (+) of your measuring device to the Room Air (RA) port and the “low” pressure side (-) to the Exhaust Air (EA) port.

• Use the reading displayed on your measurement device to cross reference the CFM output using the conversion chart. NOTE: Be sure to replace cap into pressure port when

airow measuring is completed.

• Adjust airow by changing the potentiometer setting for the

measured airstream.

• NOTE: For best performance the airow rate for both

the Fresh Air and the Exhaust Air should be roughly equal (“balanced”). In some facilities a slight positive or negative pressure in the building is desired. RenewAire energy

recovery ventilators can generally operate with a ow imbalance of up to 20% without signicant loss in energy recovery efciency.

AIRFLOW PREDICTED BY

PRESSURE DROP

ACROSS CORE (SCFM)

DP (“H2O)

EV450IN

FA RA

0.20 200 200

0.25 225 225

0.30 245 245

0.35 265 265

0.40 285 285

0.45 305 305

0.50 330 330

0.55 350 350

0.60 370 370

0.65 390 390

0.70 410 410

0.75 430 430

0.80 455 455

0.85 475 475

0.90 495 495

0.95 -- --

1.00 -- --

1.05 -- --

1.10 -- --

Figure 1.

CHART: AIRFLOW vs.

PRESSURE DROPS

PRESSURE PORTS (4)

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Wiring Schematics

EV450IN Replacement Parts

CORE

FILTERS

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Accessories

Hanging Bracket/Floor Mount Legs (2 pieces) 45EVHB 8” X 12” to 10” Round Transition (2 pieces) 45EVT10 8” x 12” Duct Flange (2 pieces) 45EVDF

BLOWER DOOR

DRAW LATCH

DISCONNECT SWITCH

TRANSFORMER

ISOLATION RELAY

CIRCUIT BREAKER

CONTACTOR

K FILTER ACCESS DOOR L

MOTOR BLOWER ASSEMBLY

WIRE HARNESS

VOLTAGE ADAPTER

INSULATED CASE

R DOOR BUMPER

Control Options

PN 165840_000 HE1XIN P1

Motor (FA)

Motor (EA)

UNIT WIRING

Control Options

PN 165840_000 HE1XIN P1

GNDL1L2

Contactor

Motor (FA)

Motor (EA)

Class 2

Transformer with

Circuit Breaker

POWER SUPPLY

SINGLE-PHASE 60hz

See Unit Nameplate for VOLTAGE

Fuse Block

(factory option)

RED

Isolation Relay

BLUE

YEL

RED

BLUE

YEL

Unit 24VAC

Power Supply

Connect Blue & First Yellow Leads

Connect Switch between Red &

Second Yellow Leads

Connect Blue & First Yellow Leads

Connect Control's N.O. Output to 2nd Yellow Lead

External Control is powered by 24VAC available between the Red and Blue leads. 8VA Maximum Load.

UNIT INTERNAL CONTROL WIRING

Isolation

Relay Coil

RED

BLUE

YEL

Unit 24VAC

Power Supply

(SIMPLIFIED)

UNIT INTERNAL CONTROL WIRING

(SIMPLIFIED)

UNIT CONTROL WIRING SHOWN

SHOWN IN CONTROL OPTIONS AT LEFT

UNIT WIRING

A SWITCH OR NON-POWERED CONTROL USING UNIT'S 24VAC POWER SUPPLY

AN EXTERNAL CONTROL DEVICE USING UNIT'S 24VAC POWER SUPPLY

24VAC FROM AN EXTERNAL SOURCE

Isolation

Relay Coil

MPU

Control Options

PN 165840_000 HE1XIN P1

GNDL1L2

Contactor

Motor (FA)

Motor (EA)

POWER SUPPLY

SINGLE-PHASE 60hz

See Unit Nameplate for VOLTAGE

RED

BLUE

YEL

Unit 24VAC

Power Supply

Connect Blue & First Yellow Leads

Connect Switch between Red &

Second Yellow Leads

Connect Control's N.O. Output to 2nd Yellow Lead

UNIT INTERNAL CONTROL WIRING

Isolation

Relay Coil

(SIMPLIFIED)

UNIT WIRING

A SWITCH OR NON-POWERED CONTROL USING UNIT'S 24VAC POWER SUPPLY

24VAC Power Supply

Provided with this ERV Unit

This ERV is provided with a Class II 24VAC power supply system that operates the unit’s contactor(s) for EV450 and HE1X. The ERV’s 24VAC Power Supply can also be used to power the externallyinstalled controls system: up to 8VA of power is available.

The unit’s power supply system includes isolation relay(s) so you can use external controls whose contact ratings are as low as 50mA (1.2VA). Also, it is possible to operate the isolation relays with 24VAC power from an external source (with proper wiring connections).

A built-in circuit-breaker prevents damage to the transformer and other low-voltage components in the event of a short-circuit or overload. In extreme cases, the transformer itself is designed to fail safely.

OBSERVE THESE LIMITS TO WIRE LENGTH AND GAUGE, in order to ensure reliable operation of the control system.

Wire Gauge #22 #20 #18 #16 #14 #12

Circuit Length 100’ 150’ 250’ 400’ 700’ 1000’

“Circuit Length” is distance from ERV to Control Device.

Control Wiring Schematics

NOTE: The simplied schematics below show only the relevant

portions of the low-voltage control circuit in the ERV unit and representational external control approaches. See the complete unit schematics elsewhere in this manual.

Be careful if the external control system provides 24VAC power at its control output: make sure blue and red leads are separately capped and not connected to any other wires.

1. Connect only to components intended for use with 24VAC power.

2. Do not undersize the low-voltage wires connected to this device. Observe the wire length and gauge limits indicated in this manual.

3. Do not overload this unit’s 24VAC power supply system.

Conrm that the power requirements of devices you connect

to this power supply system do not exceed 8VA in total.

4. If an external source of 24VAC power is used to control the unit, consult the wiring schematics and connect the

external power only to the specied terminals in order

to avoid damaging the unit or external controls. Connect only CLASS II power to the control terminals of this unit.

5. Unit is not equipped to receive analog signals (such as 1-10vdc or 4-20mA).

6. Unit is not equipped to communicate directly with Building Management Systems (such as BACNET, LONWORKS, etc.). However, the unit can be controlled by powered or non-powered contacts operated by any kind of control system.

Specications

• Nominal Output Voltage under load: 24VAC

• Typical Output Voltage at no load: 29-31V

• Minimum contact rating

for connected control device: (50mA (1.2VA)

• Circuit Breaker Trip Point: 3A

A. Single 2-wire Control: Use schematic below if the control

requires no power to operate and acts like a simple on/ off switch. The control must not supply any power to the ERV unit. Install jumper (provided) between terminals 2 & 3. Connect the control’s contacts to terminals 1 & 4 to operate the ERV’s isolation Relay.

Control on separate Power Supply, no power present at

Control Output: Wire as shown for the Single 2-wire control.

Make sure the control provides no voltage or current at its output terminals.

A SWITCH OR NON-POWERED CONTROL USING UNIT'S 24VAC POWER SUPPLY

Connect Blue & First Yellow Leads

Connect Switch between Red &

Second Yellow Leads

UNIT INTERNAL CONTROL WIRING

(SIMPLIFIED)

BLUE

YEL

Isolation

Relay Coil

YEL

RED

Unit 24VAC

Power Supply

B. Control Sending 24VAC “On” Signal (from an external

power source) to ERV: Make sure jumper is NOT installed

between Terminals 2 & 3. Now you safely can apply 24VAC to the Terminals 3 & 4 to operate the ERV’s isolation relay.

Supply only 24VAC (not VDC) from a Class II Power Source.

How to Reset the 24 VAC Circuit Breaker

circuit, the circuit breaker will trip to prevent the failure of the transformer. When it trips the circuit breaker’s button pops up. Shut off the primary-side power to the unit, and remove the excessive load or the short. The circuit breaker can be reset

about fteen seconds after it trips by pressing in the button.

NOTE: INSTALLING CONTRACTOR:

If primary-side voltage is 230VAC, move black primary-side lead from transformer’s “208V” terminal to the transformer’s terminal marked “240V” (“230V” in some units).

Do not move the black primary-side lead that is connected to the transformer’s “COM” terminal.

Limits of Power Output

If limits on wire gauge and length are observed, you may connect control devices that draw up to 8VA to the blue and red wires. More than one device can be connected as long as total steadystate load does not exceed 8VA.

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If the transformer is subjected to an excessive load or a short

Cap Blue and Red Leads when using

24VAC from external source.

UNIT INTERNAL CONTROL WIRING

(SIMPLIFIED)

BLUE

YEL

Isolation

Relay Coil

YEL

RED

C. Control operating on Unit’s 24VAC Power Supply: 24VAC

power is available at the Terminals 1 & 2. CAUTION: external control system should not draw more than 8VA. Install jumper (provided) between terminals 2 & 3. Connect the switched output of the Control to Terminal 4 to operate the ERV’s isolation relay.

AN EXTERNAL CONTROL DEVICE USING UNIT'S 24VAC POWER SUPPLY

External Control is powered by 24VAC available between the Red and Blue leads. 8VA Maximum Load.

MPU

Connect Blue & First Yellow Leads

UNIT INTERNAL CONTROL WIRING

(SIMPLIFIED)

BLUE

YEL

Isolation

Relay Coil

YEL

RED

Unit 24VAC

Power Supply

Unit 24VAC

Power Supply

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Maintenance

INITIAL PRESSURE DROP: 14 x 20 MERV 8 FILTERS

RENEWAIRE PART NUMBER 103056

0.4

SUMMARY MAINTENANCE REQUIREMENTS

Change Filters Inspect Blower General Cleaning and Inspection Clean Energy Exchange Cores Lubrication

CHANGING THE FILTERS

Inspect and/or replace lters every two or three months when

the unit is in regular use, or as needed.

• Turn off unit completely! Lock-out and tag-out the unit disconnect switch.

• Open the Door. The door is secured with turn-type latches or draw latches, plus one Phillips-head securing screw. Keep the securing screw. NOTE: Always replace securing screw when reinstalling door.

• Remove and dispose of all (2) lters. Replace all (2) lters. NOTE: See chart for information on the initial resistance of

the lters originally supplied with this unit. If replacement lters have higher resistance, the airow of the system will

be lower.

• Close door; reinstall securing screw.

Blower Inspection

Inspect Blowers every time you change the lters.

• Conrm bearings are still secure to blower shaft. It should

not be possible to move the blower shaft back and forth along its length.

• Conrm blower wheel is not rubbing against the blower inlet

or housing.

GENERAL CLEANING AND INSPECTION

Perform general cleaning and inspection when changing lters.

Danger of injury from un-guarded blower in unit. Disconnect power to unit before opening door.

Danger of injury if unit starts unexpectedly. Switch power off at service disconnect. Lock-out/tag-out the disconnect.

Initial Resistance of Filters supplied with this unit:

INITIAL PRESSURE DROP 14” x 20” MERV 8 FILTERS

RENEWAIRE SERVICE PART NUMBER 990091

0.3

0.2

0.1

PRESSURE DROP THROUGH FILTER ("H

400 500 600 700 800 900 1000

CFM FILTER

"14X20_MERV8_JUNE06.pdf" 6/26/06 Certified data provided by filter manufacturer.

Filter Specications:

(2) 14” x 20” x 2”(nominal) pleated lters

Actual size: 13.5” x 19.5” x 1.75” Unit shipped with MERV-8 Filters Minimum recommended effectiveness: MERV-6

Filters must be used or the energy exchange core will become blocked by dust and the unit will not do its job. In extreme cases components may be damaged.

• Remove dust from blower wheels periodically.

• Remove paper, leaves, etc. from inlet and outlet screens.

• Inspect for insect nests.

TO CLEAN THE ENERGY EXCHANGE CORE

Clean the core annually.

• Remove the lters.

• Vacuum the exposed faces of the energy exchange core with

a soft brush.

• Vacuum out dust from the rest of the unit case.

• Install new lters.

LUBRICATION

If the motors used in this ERV are equipped with grease ttings,

motors must be lubricated as part of routine maintenance. Use Exxon Polyrex or equivalent at 2500 operating hour intervals.

134776_011 EV450INMan_Feb14.indd Revised 02/2014 www.renewaire.com Page 12

DO NOT WASH THE ENERGY EXCHANGE CORE.

Keep it away from water or re to avoid damaging it.

Always handle the core carefully.

RISK OF INJURY OR DAMAGE.

Motor may have a manual reset thermal protector. Disconnect power before servicing or resetting motor thermal protector. Use caution, motor may be hot. Allow the motor to cool before resetting the thermal protector.

If the motor thermal protector tripped, correct the issue that caused the motor to overheat (e.g. over motor rated amperage or locked rotor).

If the motor has a manual reset thermal protector, the red thermal protector reset button is located on the motor body, on or near the lead end of the motor. If the button does not reset, the motor may still be too hot. Allow the motor to fully cool to reset the thermal protector, you should feel or hear a click when the thermal protector resets while pushing the reset button.

RenewAire EV450IN Installation And Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual