RenewAire EV Series User manual

EV450IN
EV SERIES ERV
Installation, Operation and Maintenance Manual
Model: EV450IN shown

1.800.627.44992
EV-Series Indoor
ERV
Three phase motors are NOT suitable for use with solid
state speed control.
Single phase EC motors are NOT suitable for use with solid
state speed control. They already have speed control built
into the motor electronics.
WARNING
Moteurs de trois phase ne convient pas pour utilisation avec
regulateur de vitesse electronique.
Moteurs d’une phase de l’EC ne conviennent pas pour une
utilisation avec regulateur de vitesse electronique. Ils ont
déjà le contrôle de vitesse intégré dans le moteur électro-
nique.
AVERTISSEMENT
RISK OF INJURY OR DAMAGE
Motor may have a manual reset thermal protector. Dis-
connect 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 amper-
age 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.
WARNING
ARC FLASH AND ELECTRIC SHOCK HAZARD
Arc flash and electric shock hazard. Disconnect all electric
power supplies, verify with a voltmeter that electric power
is off and wear protective equipment per NFPA 70E before
working within electric control enclosure. Failure to comply can
cause serious injury or death.
Customer must provide earth ground to unit, per NEC, CEC and
local codes, as applicable.
Before proceeding with installation, read all instructions,
verifying that all the parts are included and check the
nameplate to 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 open a remote disconnect switch and verify
that power is off with a volt meter. Refer to unit electrical
schematic. Follow all local codes.
WARNING
RISK OF ELECTRIC SHOCK OR EQUIPMENT DAMAGE
Whenever electrical wiring is connected, disconnected or
changed, the power supply to the ERV and its controls must
be disconnected. Lock and tag the disconnect switch or circuit
breaker to prevent accidental reconnection of electric power.
CAUTION
RISK OF CONTACT WITH HIGH SPEED 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 unit with any cabinet panels removed.
CAUTION
This equipment is to be installed by following industry best
practices and all applicable codes. Any damage to compo-
nents, assemblies, subassemblies or the cabinet which is
caused by improper installation practices will void the
warranty.
IMPORTANT
This unit is for ventilating finished structures only. It is not to
be used until after all construction has been completed and
construction debris and dust are cleaned from the Occupied
Space.
IMPORTANT
This unit is intended for general ventilating and heating only.
Do not use to exhaust hazardous or explosive materials and
vapors. Do not connect this equipment to range hoods, fume
hoods or collection systems for toxics.
IMPORTANT

31.800.627.4499
EV-Series Indoor ERV
OWNER INFORMATION
SAVE THIS MANUAL
UNIT INFORMATION
Record information as shown below.
In the unlikely event that factory assistance is ever required, information located on the unit
label will be needed.
Locate the RenewAire unit label found on the outside of the unit.
NOTE: This information is for purposes of identifying the unit-specific option data from the
Option Code.
JO#: I0XEA-0000
115V
Option Code: EV450JIN--S11-----ANT---L
Serial Number:
MODEL/MODELE:
1
[email protected] 7.2 9.0
Energy Recovery Ventilator
Label No: 130137_000_D03
15
EV450IN
A20 7887L
UNIT INFORMATION
UNIT LABEL (TYPICAL)
E- 04 IV - J5 N -
Option Code:
Serial Number:
SO #:
NOTE: This page
is to be completed
by the installing
contractor. The completed
document is to be turned
over to the owner after
start-up.
This manual contains space for maintaining written records of unit maintenance and/or
repairs. See Section 7.6 Maintenance Records. At the time the ERV is commissioned, a
maintenance schedule should be developed by the user to incorporate monthly and seasonal
maintenance and include start-up maintenance tasks as described in this manual.
NOTICE

1.800.627.44994
RENEWAIRE.COM 1.800.627.4499
4
SPECIFICATIONS & DIMENSIONS
Specifications may be subject to change without notice.
INDOOR UNIT SPECIFICATIONS
Ventilation Type:
Static plate, heat and humidity transfer
Typical Airflow Range: 200-540 CFM
AHRI 1060 Certified Core: One L85-G5
Standard Features:
Non-fused disconnect
24 VAC transformer/relay package
Cross-core differential pressure ports
Filters:
Total qty. 2, MERV 8: 14" x 20" x 2"
Unit Dimensions & Weight:
54 1/2" L x 16 3/8" W x 36 3/4" H
137-199 lbs., varies by option(s)
Max. Shipping Dimensions & Weight (on pallet):
62" L x 42" W x 22" H
250 lbs.
Motor(s), choice of:
Qty. 1, 0.6 HP (standard single phase)
Qty. 1, 0.5 HP (standard three phase)
Options:
Qty. 1, Variable Speed/ECM - Direct Drive Motors
(see EV450IN EC Motor submittal) -
0.5 HP, 120V/1Ph/60HZ,
0.5 HP, 208-230V/1Ph/60HZ
Fused disconnect
Integrated programmable controls -
enhanced, premium
Qty. 2, Factory mounted filter alarms -
both airstreams
Double wall construction
Exterior paint - white, custom colors
Accessories:
Filters - MERV 13, 2"(shipped loose)
Backdraft damper 10"
Wall cap 10"- galvanized, paintable galvanneal
Vibration isolation kit
Hanging bracket kit
Transition kit 10"- round, qty. 2
Flange kit - rectangular 12"x 8", 2 flanges
Solid state speed control kit - 115V, qty. 1,
208-230V, qty. 1
Digital time clock - wall mount (TC7D-W),
in exterior enclosure (TC7D-E)
Carbon dioxide sensor/control -
wall mount (CO2-W), duct mount (CO2-D)
IAQ sensor - wall mount (IAQ-W),
duct mount (IAQ-D)
Motion occupancy sensor/control -
ceiling mount (MC-C), wall mount (MC-W)
Smoke detector - duct mount (SD-D)
Louver with 10"round duct connection -
12"(W) x 12"(H)
Electric duct heater - RH series (1-11.5 kW);
EK series (1–175 kW);
designed for indoor ductwork installation only
HP Volts HZ Phase FLA
Min.
Cir.
Amps
Max.
Overcurrent
Protection
Device
0.6 120 60 Single 7.2 9.0 15
0.6 208-230 60 Single 3.9-3.6 4.9 15
0.6 277 60 Single 3.5 4.4 15
0.5 208-230 60 Three 1.7-1.5 2.1 15
0.5 460 60 Three 0.8 1.0 15
UNIT PERFORMANCE
Airflow CFM ESP in H20Watts
1P 3P
225 1.25 335 181
375 0.89 464 333
420 0.75 518 394
480 0.50 584 472
500 0.43 600 491
540 0.25 640 540
575 0.00 690 610
ELECTRICAL DATA
Note: Watts is for the entire unit.
Note: Airflow performance includes effect of clean, standard filter supplied with unit.
    
450INEV Energy Recovery Ventilator
Standard
Download specification at:
renewaire.com/specifications
Note: Indirect Gas-Fired Duct Furnace is not available on the EV450IN.
Specifications may be subject
to change without notice.

51.800.627.4499
FOR THE MOST COMPLETE AND CURRENT INFORMATION VISIT RENEWAIRE.COM 5
EV-SERIES
7/8" Power In
7/8" Control In
10"
Round Typ. (Optional 45EVT10 Transition Kit Shown)
25 1/4"
11 1/4"
5 1/4" Typ.
Disconnect
Switch
5 1/8" Typ.
54 1/2" Overall
(with Round Transitions)
C
L
2 1/4" Control In
C
L
14 1/4" Power In
EA
OA
FA
RA
Pressure Ports (4) Typ.
(2)
7/8" Holes
for Wiring in Bottom of E-Box
33 7/8" Case
15 7/8"
Case
16 3/8"
Overall
6 3/8"
10 1/8"
26 1/4"
1 1/2" Typ.
44 1/8" Case
47 1/8" Overall
(with Flanges)
14 1/4" Minimum
Service Area
(Doors can be
Removed from
Hinges)
44 1/2" Minimum
Service Area
24 3/4"
TOP VIEW
Door Swing
Door Swing
4 1/4" Typ.
20 1/4"
Typ.
7/8"
Typ.
C
L
2 5/8"
Control In
C
L
4 1/8"
Power In
12" X 8" Typ.
Duct Flange
(Optional
45EVDF
Kit Shown)
2 1/8"
Typ.
36 3/8" Overall
RIGHT VIEW
FRONT VIEW
LEFT VIEW
Model: EV450IN Drawing Type: Unit Dimension Version: MAY17
ABBREVIATIONS EA: Exhaust Air to outside OA: Outside Air intake RA: Room Air to be exhausted FA: Fresh Air to inside INSTALLATION ORIENTATION Unit may be installed in any orientation. NOTE 1. UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE ROUNDED TO THE NEAREST EIGHTH OF AN INCH. 2. SPECIFICATIONS MAY BE SUBJECT TO CHANGE WITHOUT NOTICE.
EV450IN Energy Recovery Ventilator Standard or EC Motor Option
AIRFLOW CONFIGURATION Available as shown in dimension drawing.
UNIT MOUNTING & APPLICATION
Can be mounted in any orientation. RA/EA airstream
can be switched with OA/FA airstream.
EV450IN Energy Recovery Ventilator Standard
Specifications may be subject
to change without notice.

1.800.627.44996
EV-Series Indoor
ERV
5.4 WIRING SCHEMATICS............................................18
5.5 EXTERNAL CONTROL CONNECTIONS.....................19
5.5.1 Single 2-Wire Control, Unpowered..................................... 19
5.5.2 Control Sending 24 VAC “On” Signal ................................. 19
5.5.3 Control Operating on Unit’s 24 VAC Power Supply.............. 19
5.6 QUICK START........................................................20
6.0 OPERATION 20
6.1 PRINCIPLE OF OPERATION ....................................20
6.2 PRE-START-UP .....................................................20
6.2.1 Verify Voltages..................................................................20
6.2.2 Verify Transformer Wiring .................................................20
6.2.3 Inspect Filters ..................................................................20
6.2.4 Inspect Foam Gasketing....................................................20
6.2.5 Inspect Fans.....................................................................20
6.2.6 Inspect and Clean the Cabinet Interior...............................20
6.2.7 Inspect Ductwork Connections..........................................20
6.3 UNIT START-UP ....................................................21
6.3.1 Fixed Speed Units .............................................................21
6.4 MEASURING AIRFLOW ..........................................21
6.4.1 Filter Pressure Drop ..........................................................22
6.5 NORMAL OPERATION............................................22
6.6 EXTREME COLD OPERATION .................................23
7.0 MAINTENANCE 23
7.1 MAINTENANCE 24 HRS. AFTER START-UP .............23
7.2 MAINTENANCE 30 DAYS AFTER START-UP.............23
7.3 MAINTENANCE SCHEDULE....................................23
7.4 FILTERS ...............................................................23
7.5 FAN MOTOR..........................................................24
7.6 ENTHALPIC CORE .................................................24
7.6.1 Enthalpic Core Maintenance ..............................................24
7.6.2 Enthalpic Core Removal ....................................................24
7.6.3 Enthalpic Core Rempacement............................................ 24
7.7 MAINTENANCE RECORDS .....................................25
7.6 SERVICE PARTS....................................................27
8.0 TROUBLESHOOTING 27
9.0 FACTORY ASSISTANCE 27
TABLE OF CONTENTS
1.0 OVERVIEW 8
1.1 DESCRIPTION .........................................................8
2.0 COMPNENT DESCRIPTIONS 8
2.1 CABINET ................................................................8
2.2 ENTHALPIC CORES .................................................8
2.3 FAN/MOTOR ASSEMBLY ..........................................9
2.4 E-BOX ....................................................................9
2.5 FILTERS .................................................................9
2.6 FACTORY INSTALLED OPTIONS................................9
3.0 SHIPPING/RECEIVING/HANDLING 9
3.1 UNIT WEIGHTS AND DIMENSIONS ...........................9
3.1.1 Unit Dimensions and Weight ................................................9
3.1.2 Maximum Shipping Dimensions and Weight .........................9
3.2 RIGGING AND CENTER OF GRAVITY .......................10
3.2.1 EV450IN Hoisting Weights and COG................................... 10
3.3 RECIEVING ...........................................................10
3.4 STORAGE .............................................................10
4.0 UNIT PLACEMENT 10
4.1 BEFORE YOU BEGIN ..............................................10
4.2 SERVICE CLEARANCES .........................................11
4.3 SOUND ATTENUATION...........................................11
4.3.1 Outside the Building.......................................................... 11
4.3.2 Ducts ............................................................................... 11
4.3.3 Radiated Noise ................................................................. 11
4.3.4 Aerodynamic (Velocity) Noise............................................ 11
5.0 INSTALLATION 12
5.1 DUCTWORK ..........................................................12
5.1.1 Ducts to the Outside.......................................................... 12
5.1.2 Using Flex Duct to Connect EV450IN to Outside ................. 12
5.1.3 Inside Ductwork System.................................................... 13
5.1.3.1 Connecting to an Existing Air-Circulation System ............ 13
5.1.4 Ducting Fresh Air Directly into Space................................. 13
5.2 INSTALLING THE UNIT...........................................13
5.3 ELECTRICAL REQUIREMENTS................................16
5.3.1 Electronically Commutated Motors .................................... 16
5.3.2 Low Voltage Control System .............................................16
5.3.3 How to Reset the 24 VAC Circuit Breaker........................... 17
5.3.4 Limits of Power Output ..................................................... 17

71.800.627.4499
EV-Series Indoor ERV
Figure 3.2.0 EV450IN Weights and COG ............................................................................................10
Figure 4.2.0 Service Clearances, Top View........................................................................................ 11
Figure 5.2.0 Unit Mounted to Wall using Integral Mounting Flanges....................................................14
Figure 5.2.1 Unit Hung from Ceiling using Integral Mounting Flanges .................................................15
Figure 5.2.2 Rubber Door Keeper Installed on Blower Access (Large) Door......................................... 15
Figure 5.2.3 Rubber Door Keeper Installed on Filter Access (Small) Door............................................15
Figure 5.4.0 EV450 Single Pase Unit Power Wiring Schematic ...........................................................18
Figure 5.4.1 EV450 Three Pase Unit Power Wiring Schematic ............................................................18
Figure 5.5.0 A Switch or Non-Powered Control Using Unit’s 24 VAC Power Supply.............................. 19
Figure 5.5.1 24 VAC from an External Source ....................................................................................19
Figure 5.5.2 An External Control Device using Unit’s 24 VAC Power Supply ........................................19
Figure 6.4.0 Airflow Diagram, EV450IN .............................................................................................21
Figure 6.4.1 Initial Pressure Drop of MERV 8 Filters, Supplied with this Unit .......................................22
Figure 6.4.2 Initial Pressure Drop of MERV 13 Filters, Available as an Accessory................................22
Figure 7.8.0 Service Parts.................................................................................................................27
TABLE OF CONTENTS
TABLE OF ILLUSTRATIONS
MODEL NUMBER
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
J - - -
DIGIT NUMBER
Wall Type
Digit 11:
"S" = Single
"D" = Double
Phase
Digit 12:
"1" = Single Phase
"3" = Three Phase
Voltage
Digit 13:
"1" = 115V
"4" = 460V
"5" = 208-230V
"9" = 277V
FA/EA Horsepower
Digit 14:
"-" = Standard EV450 Motors
"E" = EC Direct Drive Motors
*NOTES:
Digit 6 "J" = G5 Core Type Digits 9,10, 15, 16, 17 & 18 are not used in these models.
Restrictions:
1: Voltage Codes "1" & "9" only available with Phase Code "1" (Single-Phase).
2: Voltage Codes "4" & "8" only available with Phase Code "3" (Three-Phase).
3: Motor Code "E-" (EC Motors) only available with Phase Code "1" (Single Phase)
4: Unit Control Code "G" (Terminal Strip) only available with Motor Code "E-".
5: Some units with Customization Code "X" are not safety listed.
Unit Control
Digit 19:
"A" = Standard Unit Control Wiring
"G" = Terminal Strip for EC Motors
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 BACNET License
"4" = Premium Controls with BACNET License
Filter Options
Digit 22:
"-" = None
"F" = Filter Monitor Both Airstreams
Other Options
Digit 23:
"-" = None (Reserved)
Paint and Customization
Digit 24:
"-" = None
"W" = White Paint
"C" = Custom Paint
"X" = Custom Unit
Safety Listing
Digit 25:
"L" = Listed
"N" = Non-Listed
-EV450 IN- - -
EV450IN MODEL
PRODUCT CODE CHART
CONFIGURATION CODE

1.800.627.44998
EV-Series Indoor
ERV
OVERVIEW
1.0 OVERVIEW
NOTE: This unit is
an Energy Recovery
Ventilator, or ERV.
It is commonly referred to
throughout this manual as
an ERV.
1.1 DESCRIPTION
2.0 COMPONENT DESCRIPTIONS
2.2 ENTHALPIC CORES
2.1 CABINET
All EV450IN ERVs use a static-plate enthalpic core. The enthalpic cores transfer both latent and
sensible energies between the airstreams. Gasketing is pre-installed on the cores and must be
positioned to provide a proper air seal. For information on annual maintenance of the cores, see
Section 7.0 Maintenance in this manual.
The cabinet for the EV450IN is made of 20 gauge galvanized steel and has 1" thick high-
density, foil-backed insulation on the inside. Units are available in either single-wall or double-
wall construction. Doors are hinged and are fitted with stainless steel machine screws through
the faces to prevent accidental opening of the doors when the unit is in operation.
The EV450IN Energy Recovery Ventilator is a device for recovering both sensible energy (heat)
and latent energy (moisture) from the Exhaust Air from an Occupied Space and injecting
those energies into an incoming Outside Air stream. It accomplishes this task by forcing the
two airstreams through enthalpic cores, where the energy exchange takes place. The two
airstreams pass through the enthalpic cores at right angles and the airstreams never mix
together. See Section 2.2 Enthalpic Cores in this manual.
Each ERV has two electric blowers, one for each airstream. Fan speeds can be either single
speed, or they can have electronically commutated motors. There are a number of different
control devices available to control the operation or speed of the unit fans.
There are two types of EV450 units, one for indoor installations and one for rooftop, or outdoor,
installation. This manual is for the EV450IN, which is the indoor unit. For information on the
outdoor version of this product, see the EV450RT Installation and Operation Manual.
These ERVs are commonly installed as part of an air handling system that provides heating and
cooling of Supply Air. They can also be installed to operate as stand-alone devices when ducted
directly to and from the Occupied Space.
Each unit has an integral 24 VAC power supply that is used internally and can also be used as a
power source for other optional control devices.
The EV450IN units are low-maintenance, requiring periodic replacement of the air filters, and
annual vacuuming of the enthalpic cores. See Section 7.0 Unit Maintenance in this manual.
IMPORTANT
It is important to understand and use the equipment airstream terminology as it is used in this
manual. The airstreams are defined as:
uOUTSIDE AIR (OA): Air taken from the external atmosphere and, therefore, not previously
circulated through the system.
uFRESH AIR (FA): Air that is downstream of the enthalpic cores and is ready for conditioning or
for return to the Occupied Space.
uRETURN AIR (RA): Air that is returned to the ERV from a conditioned space.
uEXHAUST AIR (EA): Air that is removed from a heating or cooling appliance or from the Occu-
pied Space and discharged.

91.800.627.4499
EV-Series Indoor ERV
2.3 FAN/MOTOR ASSEMBLY
A single double-shafted motor with manual reset thermal protection directly drives two fans for
quiet operation.
2.4 E-BOX
Every EV450IN is equipped with what is known as an “E-Box.” High-voltage supply wiring and
low-voltage control wiring is all terminated here. If optional integrated programmable controls
are installed, an additional 24 VAC transformer is installed here to power both the controller and
its dedicated sensors.
2.5 FILTERS
All EV450IN units come equipped with two MERV 8 14" x 20" x 2" (nominal) pleated filters.
MERV 13 filters can be ordered as an accessory and are shipped loose.
u(2) 14" x 20" x 2" (nominal) pleated filters. Actual size: 13.5" x 19.5" x 1.75"
uMinimum recommended effectiveness: MERV 6.
2.6 FACTORY INSTALLED OPTIONS
All EV450IN units can be ordered with factory installed options. See Unit Configuration Code on
page 7.
Options will have supplemental manuals shipped with the unit.
For EC Motor option, see EC Motor Supplemental Manual.
For Commercial Controls, see Commercial Controls Supplemental Manual.
For Filter Alarm, see Filter Alarm Supplemental Manual.
SHIPPING/RECEIVING
3.0 SHIPPING/RECEIVING/HANDLING
3.1 UNIT WEIGHTS AND DIMENSIONS
EV450IN units are boxed and palletized at the factory and then shipped by common carrier.
Upon receipt by the installer, the shipment should be inspected for shipping damage, prior to
unloading. Any discovered shipping damage should be immediately reported to the RenewAire
sales rep and the damage must be recorded on the Bill Of Lading, prior to signing for
acceptance of the shipment.
Place the EV450IN unit on a flat surface where it will be protected from the weather and
incidental damage. Keep the unit boxed until ready for installation.
3.1.1 Unit Dimensions and Weight:
54 1/2" L x 36 3/4" W x 16 3/8" H
137-199 lbs., varies by option(s)
3.1.2 Maximum Shipping Dimensions and Weight:
62" L x 42" W x 22" H
250 lbs.

1.800.627.449910
EV-Series Indoor
ERV
11/3/06 MF
SPECIFICATIONS SUBJECT
TO CHANGE WITHOUT NOTICE.
RenewAire LLC
Scale: 1" = 24"
Do not scale drawing
EV450IN_CORNER_WEIGHTS_MAR20.dwg
EV450IN Corner Weights
RR
RF
LF
LR
12/6/06 MF ADD DOUBLE-WALL WEIGHTS
JUN18 MHK
BASIC UNIT WEIGHTS (lbs.) FRONT VIEW
Motors UNIT LF LR RR RF
1-PHASE (.6 HP) 137 39 37 30 31
3-PHASE (.5 HP) 141 40 39 30 31
ADDITIONAL WEIGHTS FOR OPTIONS (lbs.)
Motors UNIT LF LR RR RF
Double Wall 48 12 12 12 12
Total Selected Weights
LOCATION AT WHICH CORNER WEIGHTS ARE CALCULATED: OUTER
MOUNTING HOLES
Center of gravity: From Left (A) = 24", From Front (B) = 16" (+/- 2")
MAR20 KMC
A
B
40.000"
35.125"
UNIT COG
RANGE
FIGURE 3.2.0 EV450IN WEIGHTS AND COG
3.2 RIGGING AND CENTER OF GRAVITY
SHIPPING/RECEIVING
3.3 RECEIVING
Upon receipt of the EV450IN, inspect the unit for obvious external damage. If damage is
observed, take digital pictures and report the damage to your RenewAire rep. Note the damage
on the carrier’s Bill of Lading. Depending on expected transport and storage conditions, the
unit may have only the duct openings covered. Do not unbox the unit at this time. The unit will
normally be moved to its final location while still boxed.
Once the unit is unboxed, prevent dirt and debris from entering the cabinet by covering any duct
openings. Keep the duct openings covered until it is time to connect ductwork.
3.4 STORAGE
Units that must be stored prior to installation should be left on their boxes and protected from
weather and physical damage. Units must be placed on a level surface to prevent wracking of
the EV450IN. All access doors must be secured with all available hardware (door latches and
securing bolts) and all openings into the cabinet must be sealed to prevent entry of dust, dirt
and debris.
4.0 UNIT PLACEMENT
4.1 BEFORE YOU BEGIN
The EV450IN is designed for installation in a sheltered location, out of the weather. The
preferred mounting location is to place the unit on a concrete floor, although it can also be
suspended from a ceiling or other structural support. See Section 5.2, Suspended Mount,
in this manual.
For all installations, maintain needed service clearances as shown on the dimensioned drawings
located on pages 4–5 of this manual.
For all floor-mount installations, the unit should be set on its factory-provided base. Select a
location that is central to the inside duct runs and close to both the exhaust duct (to the outside)
and also to the fresh air duct (from the outside).
The exhaust outlet and the outside air inlet on the outside of the building should be at least 10'
apart to avoid cross-contamination. Comply with all local building codes in the positioning of the
duct openings. Do not position the exhaust air outlet in a location where it will dump exhaust
air into any enclosed or occupied space. The duct inlets and outlets should be screened against
insects and vermin and should be shielded from the weather to prevent entry of rain or snow.
3.2.1 EV450IN Hoisting Weights and COG

111.800.627.4499
EV-Series Indoor ERV
UNIT PLACEMENT
7/8" Power In
7/8" Control In
10"
Round Typ.
(Optional
45EVT10
Transition
Kit Shown)
25 1/4"
11 1/4"
5 1/4" Typ.
Disconnect
Switch
5 1/8" Typ.
54 1/2" Overall
(with Round Transitions)
C
L
2 1/4" Control In
C
L
14 1/4" Power In
EA
OA
FA
RA
Pressure
Ports (4) Typ.
(2)
7/8" Holes
for Wiring in
Bottom of E-Box
33 7/8" Case
15 7/8"
Case
16 3/8"
Overall
6 3/8"
10 1/8"
26 1/4"
1 1/2" Typ.
44 1/8" Case
47 1/8" Overall
(with Flanges)
14 1/4" Minimum
Service Area
(Doors can be
Removed from
Hinges)
44 1/2" Minimum
Service Area
24 3/4"
TOP VIEW
Door
Swing
Door
Swing
4 1/4" Typ.
20 1/4"
Typ.
7/8"
Typ.
C
L
2 5/8"
Control In
C
L
4 1/8"
Power In
12" X 8" Typ.
Duct Flange
(Optional
45EVDF
Kit Shown)
2 1/8"
Typ.
36 3/8" Overall
RIGHT VIEW FRONT VIEW
LEFT VIEW
Model: EV450IN
Drawing Type: Unit Dimension
Version: MAY17
ABBREVIATIONS
EA: Exhaust Air to outside
OA: Outside Air intake
RA: Room Air to be exhausted
FA: Fresh Air to inside
INSTALLATION ORIENTATION
Unit may be installed in any orientation.
NOTE
1. UNLESS OTHERWISE SPECIFIED,
DIMENSIONS ARE ROUNDED TO THE
NEAREST EIGHTH OF AN INCH.
2. SPECIFICATIONS MAY BE SUBJECT
TO CHANGE WITHOUT NOTICE.
4.2 SERVICE CLEARANCES
FIGURE 4.2.0 SERVICE CLEARANCES, TOP VIEW
Take these simple steps to attenuate noise from the unit.
4.3.1 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 feet per minute (FPM) air velocity. When practical,
orient the exhaust air hood to point away from houses or public areas.
4.3.2 Ducts
Make sure the ductwork at the unit outlets is stiff enough to resist the flexure and resulting
booming associated with system start-up and shut-off, as well as the turbulent flow 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 sufficient distance, with gradual transitions to the final
duct size.
These guidelines are consistent with SMACNA recommended duct layout practices for efficient
and quiet air movement. Follow SMACNA guidelines.
4.3.3 Radiated Noise
The outlet ducts can be significant 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 first 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.
4.3.4 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.
4.3 SOUND ATTENUATION
For maximum air performance minimize the number of elbows, and do not place elbows within
3' 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.

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INSTALLATION
5.0 INSTALLATION
5.1 DUCTWORK
5.1.1 Ducts to the Outside
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. flexible insulated duct
The exhaust outlet and fresh air inlet on the outside of the building should be at least ten feet
apart to avoid cross-contamination. 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.
5.1.2 Using Flex Duct to Connect EV450IN to Outside
When connecting 10" flexible insulated duct to the Exhaust Air and Outside Air ports on the
unit use the Duct Adapter Kit accessory (45EVT10) (or fabricate equivalent). Duct need not
be flexible, 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.
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 FPM;
2. inlet duct must be at least 10" 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.
CAUTION
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.
CAUTION

131.800.627.4499
EV-Series Indoor ERV
INSTALLATION
NOTE: Ducts inside
a building that are
connected to the
outside must be insulated
with a sealed vapor barrier
on both the inside and the
outside of the insulation.
5.1.3 Inside Ductwork System
Use 8" x 12" to 10" round transitions (45EVT10) accessory (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.
OR
Use 8" x 12" duct flange (45EVDF) accessory 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 flange on the first duct section and screw it to the
EV450IN. Make sure appropriate duct sealant or tape is used to provide an air tight seal.
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.
5.1.3.1 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 flow into the space
through the branch’s return grille. Choose the return branch for your connection accordingly
(see next paragraph).
5.1.4 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.
5.2 INSTALLING THE UNIT
The EV450IN weighs approximately 199 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.
To avoid motor bearing damage and noisy and/or unbalanced blowers, keep drywall spray,
construction dust, etc., out of unit.
CAUTION

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INSTALLATION
The EV450IN has integral flanges for mounting to a wall (Figure 5.2.0) or hanging from a ceiling
(Figure 5.2.1).
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.
A vibration isolator kit, 45VIB accessory, is available for hanging the unit and includes 4 rubber
isolation mounts and eight washers. An hanging bracket kit, 45EVHB accessory, is available
for hanging the unit from a ceiling with doors opening horizontally. The 45EVHB kit can also be
used for floor mount legs. With all installations, adequate clearance for the filter access door
latches must be provided.
If doors need to be removed for installation or services see figures 5.2.2 and 5.2.3 show the
rubber door keepers. In order to remove doors these keepers must be removed.
www.renewaire.com (800) 627- 4499 [email protected]
FIGURE 5.2.0 UNIT MOUNTED TO WALL USING INTEGRAL MOUNTING FLANGES

151.800.627.4499
EV-Series Indoor ERV
INSTALLATION
www.renewaire.com (800) 627- 4499 [email protected]
FIGURE 5.2.1 UNIT HUNG FROM CEILING USING INTEGRAL MOUNTING FLANGES
www.renewaire.com (800) 627- 4499 [email protected]
www.renewaire.com (800) 627- 4499 [email protected]
FIGURE 5.2.3 RUBBER DOOR KEEPER INSTALLED ON FILTER ACCESS (SMALL) DOOR.
FIGURE 5.2.2 RUBBER DOOR KEEPER INSTALLED ON BLOWER ACCESS (LARGE) DOOR.
RUBBER DOOR KEEPER INSTALLED
ON BLOWER ACCESS DOOR.
RUBBER DOOR KEEPER INSTALLED
ON FILTER ACCESS DOOR.

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INSTALLATION
5.3 ELECTRICAL REQUIREMENTS
5.3.1 Electronically Commutated Motors
These ERVs may be ordered with factory-installed features including Electronically Commutated
(EC) Motors. Consult the supplemental Installation and Operation Manual(s) for these features if
supplied.
Electrical Options are identified 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
configuration chart to determine motor power and voltage installed in your EV450IN.
NOTE: Standard
EV450IN with sin-
gle phase original
equipment motors are
suitable for use with solid
state speed control.
NOTE: Le EV450IN
avec moteurs
d’équipement
d’origine monophasés sont
adaptés pour une utilisa-
tion avec regulateur de
vitesse electronique.
NOTE: If your unit
is equipped with
EC Motors, please
refer to “EC Motor Supple-
mental Manual” for more
detail.
Use conduit, strain reliefs,
etc. as required by code to
secure the field wiring.
Follow these steps:
1. Confirm the voltage of the power supply matches the unit.
2. Remove both unit access panels, i.e., the larger motor door and small filter door.
3. Remove electrical box cover by removing two or three screws. Connect the units power field
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, 24 VAC, to the control
pigtails. See Wiring Schematics.
5.3.2 Low Voltage Control System
This ERV is provided with a Class II 24 VAC power supply system that operates the unit’s
contactor for EV450IN. The ERV’s 24 VAC Power Supply can also be used to power the
externally-installed controls system: up to 8 VA of power is available.
The unit’s power supply system includes an isolation relay so you can use external controls
whose contact ratings are as low as 50 mA (1.2 VA). Also, it is possible to operate the isolation
relay with 24 VAC 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.
Specifications:
uNominal Output Voltage under load: 24 VAC
uTypical Output Voltage at no load: 29–31 V
uMinimum contact rating for connected control device: 50 mA (1.2 VA)
uCircuit Breaker Trip Point: 3 A
Before bringing power to the unit check unit nameplate to confirm it matches the voltage and
phase of the power you are supplying.
Remember that your field connections need to be accessible for inspection.
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!
CAUTION

171.800.627.4499
EV-Series Indoor ERV
INSTALLATION
1. Connect only to components intended for use with 24 VAC 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 24 VAC power supply system. Confirm that the power require-
ments of devices you connect to this power supply system do not exceed 8 VA in total.
4. If an external source of 24 VAC power is used to control the unit, consult the wiring
schematics and connect the external power only to the specified 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 1–10 vdc or 4–20 mA).
CAUTION
5.3.3 How to Reset the 24 VAC Circuit Breaker
If the transformer is subjected to an excessive load or a short 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 fifteen seconds after it trips by pressing in the button.
3.3.4 Limits of Power Output
If limits on wire gauge and length are observed, you may connect control devices that draw
up to 8 VA to the blue and red wires. More than one device can be connected as long as total
steady-state load does not exceed 8 VA.
If primary-side voltage
is 230 VAC, move black
primary-side lead from
transformer’s “208 V”
terminal to the transform-
er’s terminal marked “240
V” (“230 V” in some units).
Do not move the black
primary-side lead that is
connected to the trans-
former’s “COM” terminal.
NOTICE
Be careful if the external control system provides 24 VAC power at its control output: make
sure blue and red leads are separately capped and not connected to any other wires.
CAUTION
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.
Observe these limits to wire length and gauge in order to ensure reliable operation of the
control system.

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ERV
INSTALLATION
CHANGESNAMEREV. DATE
Description
Family
Config
No Dampers
RenewAire
1
A B C D E
New0 11/1/2017 austine
15/16/2018 austine Updated Wire Colors
28/1/2018 austine Added Wire Color Labels
36/6/2019 austine Revised Disconnect Nomenclature
EV450Jxx--x11,15,19-----AxTx-xx
2
3
4
5
6
7
8
9
10
11
12
13
EV450Jxx--x11,15,19-----AxTx-xx_003
Input Power
115 VAC, 1 Phase
208-230 VAC, 1 Phase
277 VAC, 1 Phase
M1
F1
N/L3
L1 GND
Contactor
24 VAC
A1 A2
1L1
3L2
2T1
4T2
M
M1
Transformer
COM 24V
Circuit Breaker
Relay
24 VAC
13 14
8
12
4
BK
BK
RD BU
BK BK
RD
BU
BU
YL
YL
YL
RD
OR
FIGURE 5.4.0 EV450 SINGLE PHASE UNIT POWER WIRING SCHEMATIC
CHANGESNAMEREV. DATE
Description
Family
Config
No Dampers
RenewAire
1
A B C D E
New0 11/2/2017 austine
15/16/2018 austine Updated Wire Colors
28/1/2018 austine Added Wire Color Labels
EV450Jxx--x34,35-----AxTx-xx
2
3
4
5
6
7
8
9
10
11
12
13
EV450Jxx--x34,35-----AxTx-xx_002
208-230VAC, 3 Phase
460VAC, 3 Phase
L2 GNDL3L1
Input Power
208-230 VAC, 3 Phase
460 VAC, 3 Phase
M1
F1
Contactor
24 VAC
A1 A2
1L1
3L2
5L3
2T1
4T2
6T3
Circuit Breaker
Transformer
COM 24V
Relay
24 VAC
13 14
8
12
4
BKBK
OR
YL
YL
RDYL
BU
RD RD
YL YL
BU BU BU
YL
RD
FIGURE 5.4.1 EV450 THREE PHASE UNIT POWER WIRING SCHEMATIC
5.4 WIRING SCHEMATICS

191.800.627.4499
EV-Series Indoor ERV
INSTALLATION
5.5 EXTERNAL CONTROL CONNECTIONS
5.5.1 Single 2-Wire Control, Unpowered
Use the schematic shown in Figure 5.5.0; 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.
uConnect the blue lead to one yellow lead.
uConnect the control’s contacts to the red lead and the remaining yellow lead.
Control on separate Power Supply, no power present at Control Output:
uWire as shown for the Single 2-wire control.
NOTE: The sim-
plified 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 schemat-
ics on the previous page.
FIGURE 5.5.0 A SWITCH OR NON-POWERED CONTROL USING UNIT’S 24 VAC POWER SUPPLY
Make sure the control pro-
vides no voltage or current
at its output terminals.
CAUTION
5.5.2 Control Sending 24 VAC “ON” Signal
Use the schematic shown in Figure 5.5.1 if a 24 VAC “ON” signal is to be sent from an external
power source to the ERV.
uMake sure the blue and red leads are separately capped and not connected to any other
wires.
Now you safely can apply 24 VAC to the two yellow leads to operate the ERV’s isolation relay.
FIGURE 5.5.1 24 VAC FROM AN EXTERNAL SOURCE
Supply only 24 VAC (not
VDC) from a Class II Power
Source.
CAUTION
5.5.3 Control Operating on Unit’s 24 VAC Power Supply
Use the schematic shown in Figure 5.5.2 if controls are operating on unit’s 24 VAC power
supply.
u24 VAC power is available at the blue and red leads.
uConnect one of the yellow leads to the blue lead.
uConnect the switched output of the Control to the red lead to operate the ERV’s isolation
relay.
FIGURE 5.5.2 AN EXTERNAL CONTROL DEVICE USING UNIT’S 24 VAC POWER SUPPLY
External control system
should not draw more than
8 VA.
CAUTION
Unit 24VAC
Power Supply
Connect Blue & First Yellow Leads
Connect Switch between Red &
Second Yellow Leads
UNIT INTERNAL CONTROL WIRING
CIsolation
Relay Coil
(SIMPLIFIED)
A SWITCH OR NON-POWERED
CONTROL USING UNIT'S 24VAC POWER
SUPPLY
Image 1 from filename Control Connections EV450-HE1XIN_DEC14
KMC 12/11/14
BLUE
YEL
YEL
RED
Unit 24VAC
Power Supply
Cap Blue and Red Leads when using
24VAC from external source.
C
UNIT INTERNAL CONTROL WIRING
(SIMPLIFIED)
24VAC FROM AN EXTERNAL SOURCE
Isolation
Relay Coil
Image 3 from filename Control Connections EV450-HE1XIN_DEC14
KMC 12/11/14
RED
YEL
YEL
BLUE
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 24VAC
Power Supply
C
UNIT INTERNAL CONTROL WIRING
(SIMPLIFIED)
AN EXTERNAL CONTROL DEVICE USING
UNIT'S 24VAC POWER SUPPLY
Isolation
Relay Coil
MPU
Image 2 from filename Control Connections EV450-HE1XIN_DEC14
KMC 12/11/14
BLUE
YEL
YEL
RED

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EV-Series Indoor
ERV
6.0 OPERATION
6.1 PRINCIPLE OF OPERATION
The EV450IN has one basic purpose: to exhaust air from a structure and bring in fresh air from
outside, while transferring heating or cooling energy from the exhaust air to the fresh air.
The EV450IN is a very simple device, and will accomplish this purpose as long as the blower is
able to move air through the enthalpic core.
6.2 PRE-START-UP
6.2.1 Verify Voltages
Using a voltmeter, test the input voltages as supplied to the disconnect switch. Refer to Digit 13
of the unit Configuration Code to find the rated voltage. The supplied voltage must be within +/-
10% of the rated voltage.
6.2.2 Verify Transformer Wiring
Units with 230 VAC power source are shipped with the transformer wired for 208 VAC. If the
unit is receiving 230 VAC, make sure the black primary-side wire on the transformer’s 208 V
terminal has been moved to the 230 V terminal.
6.2.3 Inspect Filters
Clean filters must be installed prior to fan start-up.
6.2.4 Inspect Foam Gasketing
Inspect the gasketing to make sure there are no gaps allowing air movement around the cores
or filters.
6.2.5 Inspect Fans
Prior to start-up, the fans should be rotated by hand to make sure that the impeller is not
rubbing anywhere and that they turn freely.
6.2.6 Inspect and Clean the Cabinet Interior
During the construction and installation phases of a project, dust, dirt and debris will often
accumulate inside a unit. Thoroughly clean the inside of the unit by vacuuming and/or wiping
metal surfaces with a damp rag.
6.2.7 Inspect Ductwork Connections
Ducts attached to the ERV must be firmly attached, sealed and supported in accordance with
installation instructions and SMACNA guidelines.
5.6 QUICK-START FOR TESTING CORRECT 3PH WIRING
All units that run on 3 phase power should be test-run immediately after high voltage wiring
connections are made. This will verify that the three phases are properly connected, that the
dampers will open and close properly and the fans are working properly.
For purposes of testing correct phase connections, the internal 24 VAC power supply will be
used to power-up the fans and all external control devices will be disabled, when applicable.
NOTE: Any changes
to unit low-voltage
wiring should be
made with the disconnect
switch in the OFF position.
OPERATION