RenewAire GR90 SERIES Instruction manual

RENEWAIRE.COM
MODEL: EV90
uPAINTED CASE
uLOW VOLTAGE CONTROLS
uLINE CORD
MODEL: GR90
u GALVANIZED CASE
u LINE VOLTAGE
u NO LINE CORD
MODEL: EV90P
u HIGH PERFORMANCE UNIT
u PAINTED CASE
u LOW VOLTAGE CONTROLS
u LINE CORD
GR90
EV90
EV90P
INSTALLATION, OPERATION & MAINTENANCE MANUAL
ENERGY RECOVERY VENTILATOR

ERV GR90, EV90, AND EV90P
RENEWAIRE.COM INSTALLATION, OPERATION AND MAINTENANCE MANUAL 1.800.627.44992
GR90, EV90, AND
EV90P INFO
PURPOSE OF AN ENERGY RECOVERY
VENTILATION (ERV) SYSTEM
Many modern homes are built air-tight for energy
efficiency and comfort. The result is that natural
air infiltration rates are often too low to provide
acceptable indoor air quality. The solution is to
use an ERV to remove gaseous pollutants such as
odors, winter-time excess humidity, formaldehyde,
smoke, radon, vapors from cleaning products, and
other chemicals. The removal of dust and other
small particles from your home is not the function
of an ERV.
WHEN SHOULD YOU USE YOUR ERV?
Use your ERV when windows are closed and you
need to ventilate. When the outdoor air is warmer
or cooler than comfortable, the ERV will allow
a quieter, more secure home with the windows
closed and will also save energy.
USING AN ERV WITH AIR-CONDITIONING
An ERV works very well with air-conditioning,
because its “enthalpy-transfer” energy-exchange
core will reduce the amount of moisture in
the outside air that is brought in. ERVs are the
preferred way to ventilate while air-conditioning
because it brings in less moisture than any other
ventilation method.
CONTROLLING EXCESS HUMIDITY
DURING COLD WEATHER
When the ERV is first turned on at the beginning
of the heating season (or when first installed), it
will have to run full-time for several days to reduce
indoor humidity levels. A properly set dehumidistat
will do this automatically. If your control is the
proportional timer type (PTL or FM), it should be set
to “100%” for several days whenever you have a
problem with excess humidity during cold weather.
Product info ......................... 2-6
Installation......................... 7-13
Operation & Start-up.............. 13
Maintenance.....................14-15
TABLE OF CONTENTS
There is no known safe level of
cigarette smoke. Any ventilation
system may provide noticeable
improvement in spaces where
cigarettes are smoked, but it
cannot be expected to protect
against the severe long-term
health hazards of exposure to
cigarette smoke.
WARNING
ABOUT RENEWAIRE
For over 30 years, RenewAire has been a pioneer in enhancing indoor air quality (IAQ) in commercial
and residential buildings of every size. This is achieved while maximizing sustainability through our fifth-
generation, static-plate, enthalpic-core Energy Recovery Ventilators (ERVs) that optimize energy efficiency,
lower capital costs via load reduction and decrease operational expenses by minimizing equipment needs,
resulting in significant energy savings. Our ERVs are competitively priced, simple to install, easy to use and
maintain and have a quick payback. They also enjoy the industry’s best warranty with the lowest claims due
to long-term reliability derived from innovative design practices, expert 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 manufacturing and lessening our environmental footprint, and to that
end our Madison, WI plant is 100% powered by wind turbines. The facility is also one of the few buildings
worldwide to be LEED and Green Globes certified, as well as having achieved ENERGY STAR Building status.
In 2010, RenewAire joined the Soler & Palau (S&P) Ventilation Group in order to provide direct access to the
latest in energy-efficient air-moving technologies. For more information, visit: renewaire.com.

ERVGR90, EV90, AND EV90P
31.800.627.4499 INSTALLATION, OPERATION AND MAINTENANCE MANUAL RENEWAIRE.COM
GR90, EV90, AND
EV90P INFO
SPECIFICATIONSENERGY EXCHANGE SYSTEM
Cross flow fixed-plate enthalpic energy exchange
core: engineered, proprietary resin-media composite.
Provides both sensible and latent heat transfer.
CERTIFIED PERFORMANCE
See HVI Certified Ratings.
ACCESS DOOR
Front panel opens to provide access to filters,
blowers, and energy exchanger. Snap latches
and hinges provided for easy service.
INSULATION
One inch foil-faced EPS foam throughout.
MOUNTING OPTIONS
Unit may be mounted to wall or floor joists using
integral mounting flange with hanging bracket
kit provided. (EV90 and EV90P only, not GR90)
BLOWER/MOTOR
Two high efficiency motorized impeller blowers
provide quiet operation.
FILTERS
Cleanable polyester air filters for both exhaust and
fresh air streams.
DEFROST
Passive frost-free design under most
residential conditions.
WARRANTY
Ten year limited warranty on energy exchange
core; five year limited warranty against defects
in material and workmanship on all other
components.
HVI CERTIFIED PERFORMANCE
135
FOR THE MOST COMPLETE AND CURRENT INFORMATION VISIT RENEWAIRE.COM
CERTIFICATIONS & PERFORMANCE
HVI TESTED/CERTIFIED
PER CSA C439
INDEPENDENTLY TESTED
PER CSA C439
Electrical Requirements Volts 120 Amps 3.3
Exhaust Air Transfer Ratio = 0.0% @ 0.2 in. wg (50 PA) and 2.0% @ 0.4 in. wg (100 Pa)
EV300 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
100 0.4 147 311 150 317 143 303
125 0.5 139 295 142 301 133 283
150 0.6 131 277 133 282 125 265
175 0.7 121 256 123 261 108 230
200 0.8 101 215 103 219 94 198
225 0.9 90 191 92 195 74 156
250 1.0 80 170 82 174 47 99
EV300 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 139 297 315 67 74 54
Cooling Total Recovery Efficiency %
35° 95° 138 294 313 46
Electrical Requirements Volts 120 Amps 1.5
Exhaust Air Transfer Ratio = 3.0% @ 0.2 in. wg (50 PA) and 3.0% @ 0.4 in. wg (100 Pa)
EV200 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 85 181 157 78 85 62
Cooling Total Recovery Efficiency %
35° 95° 85 180 155 52
EV200 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 97 207 100 213 109 232
50 0.2 90 192 93 199 104 221
75 0.3 88 186 90 192 101 216
100 0.4 83 176 85 181 96 204
125 0.5 79 168 81 173 88 187
150 0.6 70 149 72 154 76 162
175 0.7 57 122 59 126 68 145
Electrical Requirements Volts 120 Amps 1.3
Exhaust Air Transfer Ratio = 2.0% @ 0.2 in. wg (50 PA) and 2.0% @ 0.4 in. wg (100 Pa)
EV130 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 61 130 102 71 77 53
Cooling Total Recovery Efficiency %
35° 95° 61 130 102 48
EV130 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 77 165 79 168 79 168
50 0.2 72 153 73 156 73 156
75 0.3 64 137 66 140 66 140
100 0.4 59 126 61 129 61 129
125 0.5 49 104 50 106 50 106
150 0.6 37 79 38 81 38 81
Electrical Requirements Volts 120 Amps 0.35
Exhaust Air Transfer Ratio = 2.0% @ 0.2 in. wg (50 PA) and 2.0% @ 0.4 in. wg (100 Pa)
EV90/GR90 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 42 90 46 72 79 37
Cooling Total Recovery Efficiency %
35° 95° 42 90 44 46
EV90/GR90 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 53 113 54 115 52 109
50 0.2 46 98 47 100 46 97
75 0.3 40 85 41 87 40 85
100 0.4 34 73 35 74 34 72
125 0.5 27 58 28 59 28 60
150 0.6 19 40 19 41 22 47
Electrical Requirements Volts 120 Amps 1.3
Exhaust Air Transfer Ratio = 1.6% @ 0.2 in. wg (50 PA) and 1.6% @ 0.4 in. wg (100 Pa)
BR130 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 58 124 121 72 80 55
Cooling Total Recovery Efficiency %
35° 95° 59 126 121 46
BR130 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 70 148 71 151 75 159
50 0.2 66 141 67 143 69 147
75 0.3 62 132 63 134 64 135
100 0.4 53 113 54 115 56 119
125 0.5 44 94 45 96 47 99
150 0.6 32 69 33 70 29 62
175 0.7 24 52 25 53 21 45
Electrical Requirements Volts 120 Amps 1.0
Exhaust Air Transfer Ratio = 3.6% @ 0.2 in. wg (50 PA) and 3.4% @ 0.4 in. wg (100 Pa)
BR70 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 32 69 94 66 77 53
Cooling Total Recovery Efficiency %
35° 95° 30 64 94 42
BR70 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 41 86 42 89 46 97
50 0.2 34 73 35 75 39 84
75 0.3 28 59 29 61 32 69
100 0.4 21 46 22 47 25 53
Electrical Requirements Volts 120 Amps 0.35
Exhaust Air Transfer Ratio = 1.6% @ 0.2 in. wg (50 PA) and 2.0% @ 0.4 in. wg (100 PA)
EV90P - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 42 90 44 80 86 64
Cooling Total Recovery Efficiency %
35° 95° 42 90 44 63
EV90P - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 51 108 52 110 52 110
50 0.2 47 99 48 101 47 100
75 0.3 41 87 42 89 42 89
100 0.4 35 73 36 75 36 76
125 0.5 26 56 27 57 27 58
150 0.6 20 42 20 42 21 44
135
FOR THE MOST COMPLETE AND CURRENT INFORMATION VISIT RENEWAIRE.COM
CERTIFICATIONS & PERFORMANCE
HVI TESTED/CERTIFIED
PER CSA C439
INDEPENDENTLY TESTED
PER CSA C439
Electrical Requirements Volts 120 Amps 3.3
Exhaust Air Transfer Ratio = 0.0% @ 0.2 in. wg (50 PA) and 2.0% @ 0.4 in. wg (100 Pa)
EV300 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
100 0.4 147 311 150 317 143 303
125 0.5 139 295 142 301 133 283
150 0.6 131 277 133 282 125 265
175 0.7 121 256 123 261 108 230
200 0.8 101 215 103 219 94 198
225 0.9 90 191 92 195 74 156
250 1.0 80 170 82 174 47 99
EV300 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 139 297 315 67 74 54
Cooling Total Recovery Efficiency %
35° 95° 138 294 313 46
Electrical Requirements Volts 120 Amps 1.5
Exhaust Air Transfer Ratio = 3.0% @ 0.2 in. wg (50 PA) and 3.0% @ 0.4 in. wg (100 Pa)
EV200 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 85 181 157 78 85 62
Cooling Total Recovery Efficiency %
35° 95° 85 180 155 52
EV200 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 97 207 100 213 109 232
50 0.2 90 192 93 199 104 221
75 0.3 88 186 90 192 101 216
100 0.4 83 176 85 181 96 204
125 0.5 79 168 81 173 88 187
150 0.6 70 149 72 154 76 162
175 0.7 57 122 59 126 68 145
Electrical Requirements Volts 120 Amps 1.3
Exhaust Air Transfer Ratio = 2.0% @ 0.2 in. wg (50 PA) and 2.0% @ 0.4 in. wg (100 Pa)
EV130 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 61 130 102 71 77 53
Cooling Total Recovery Efficiency %
35° 95° 61 130 102 48
EV130 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 77 165 79 168 79 168
50 0.2 72 153 73 156 73 156
75 0.3 64 137 66 140 66 140
100 0.4 59 126 61 129 61 129
125 0.5 49 104 50 106 50 106
150 0.6 37 79 38 81 38 81
Electrical Requirements Volts 120 Amps 0.35
Exhaust Air Transfer Ratio = 2.0% @ 0.2 in. wg (50 PA) and 2.0% @ 0.4 in. wg (100 Pa)
EV90/GR90 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 42 90 46 72 79 37
Cooling Total Recovery Efficiency %
35° 95° 42 90 44 46
EV90/GR90 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 53 113 54 115 52 109
50 0.2 46 98 47 100 46 97
75 0.3 40 85 41 87 40 85
100 0.4 34 73 35 74 34 72
125 0.5 27 58 28 59 28 60
150 0.6 19 40 19 41 22 47
Electrical Requirements Volts 120 Amps 1.3
Exhaust Air Transfer Ratio = 1.6% @ 0.2 in. wg (50 PA) and 1.6% @ 0.4 in. wg (100 Pa)
BR130 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 58 124 121 72 80 55
Cooling Total Recovery Efficiency %
35° 95° 59 126 121 46
BR130 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 70 148 71 151 75 159
50 0.2 66 141 67 143 69 147
75 0.3 62 132 63 134 64 135
100 0.4 53 113 54 115 56 119
125 0.5 44 94 45 96 47 99
150 0.6 32 69 33 70 29 62
175 0.7 24 52 25 53 21 45
Electrical Requirements Volts 120 Amps 1.0
Exhaust Air Transfer Ratio = 3.6% @ 0.2 in. wg (50 PA) and 3.4% @ 0.4 in. wg (100 Pa)
BR70 - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 32 69 94 66 77 53
Cooling Total Recovery Efficiency %
35° 95° 30 64 94 42
BR70 - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 41 86 42 89 46 97
50 0.2 34 73 35 75 39 84
75 0.3 28 59 29 61 32 69
100 0.4 21 46 22 47 25 53
Electrical Requirements Volts 120 Amps 0.35
Exhaust Air Transfer Ratio = 1.6% @ 0.2 in. wg (50 PA) and 2.0% @ 0.4 in. wg (100 PA)
EV90P - Energy Performance
Supply
Temperature Net Airflow Average Power
Watts
Sensible Recovery
Efficiency %
Apparent Sensible
Effectiveness %
Net Moisture
Transfer %
C° F° L/S CFM
Heating
0° 32° 42 90 44 80 86 64
Cooling Total Recovery Efficiency %
35° 95° 42 90 44 63
EV90P - Ventilation Performance
Ext. Static Pressure Net Supply Airflow Gross Airflow
Supply Exhaust
Pa in. wg L/S CFM L/S CFM L/S CFM
25 0.1 51 108 52 110 52 110
50 0.2 47 99 48 101 47 100
75 0.3 41 87 42 89 42 89
100 0.4 35 73 36 75 36 76
125 0.5 26 56 27 57 27 58
150 0.6 20 42 20 42 21 44

RENEWAIRE.COM INSTALLATION, OPERATION AND MAINTENANCE MANUAL 1.800.627.44994
RENEWAIRE.COM 1.800.627.4499
6
SPECIFICATIONS & DIMENSIONS
Specifications may be subject to change without notice.
INDOOR UNIT
GR 90
SPECIFICATIONS
Ventilation Type:
Static plate, heat and humidity transfer
Typical Airflow Range: 40-110 CFM
Standard Features:
Galvanized cabinet
Terminal strip hard wiring in ebox (no line cord)
Unit may be mounted in any orientation
Control:
Can use any switched line-voltage power supply
(no low-voltage controls)
Filters:
Total qty. 2, MERV 8, spun-polyester media:
9 5/8" x 10 1/2" x 1"
Unit Dimensions: & Weight
22 1/2" L x 11 3/4" W x 23 3/4" H
36 lbs.
Max. Shipping Dimensions & Weight (in carton):
29" L x 22" W x 15" H
40 lbs.
Motor(s):
Qty. 2, Standard motorized impeller blowers
Accessories:
Backdraft damper 6"
Wall cap 6" - white, brown
120V line voltage Honeywell control
ELECTRICAL DATA
HP Volts HZ Phase Input Watts FLA
0.03 120 60 Single 46 @ 90 CFM 0.35
UNIT PERFORMANCE CORE PERFORMANCE
Airflow CFM ESP in H20 Temp EFF% Total EFF%
Winter/Summer*
40 0.60 84 74/56
58 0.50 80 69/50
73 0.40 77 65/46
85 0.30 74 62/43
98 0.20 71 59/39
113 0.10 68 56/34
5 7/8" Typ.
11 3/4" Overall (with Hanging Bracket)
18" Case
2 1/4" Typ.
22 1/2"
Overall
Power Wiring
Inlet
7/8"
6 1/4" Typ.
11 3/4"
Typ.
5 3/4"
Typ.
OA
EA
RA
FA
11 5/8"
Case
23 3/4"
Overall
10 1/8" Minimum
Service Area
(Door can be
Removed from
Hinges.)
22 1/4" Minimum
Service Area
21 1/4"
Door
Swing
2 5/8"
7/8" Typ.
21 7/8" Case
6" Nominal
Typ.
8" Nominal
Typ.
25 1/2" Overall
(with Hanging bracket)
Formed
Inlet Ring
LEFT VIEW
FRONT VIEW
RIGHT VIEW
TOP VIEW
Model: GR90
Drawing Type: Unit Dimension
Version: MAR16
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.
UNIT DIMENSIONS
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.
* See HVI certification ratings on page 135 of RenewAire’s Full Line Volume XVI Catalog.
STANDARD
Note: Electric Duct Heater is not available on the GR90.

51.800.627.4499 INSTALLATION, OPERATION AND MAINTENANCE MANUAL RENEWAIRE.COM
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FOR THE MOST COMPLETE AND CURRENT INFORMATION VISIT RENEWAIRE.COM
EV-SERIES & GR
Specifications may be subject to change without notice.
INDOOR UNIT
EV 90
Ventilation Type:
Static plate, heat and humidity transfer
Typical Airflow Range: 40-110 CFM
Standard Features:
Painted cabinet
Line-cord power supply
Low-voltage circuit for controls
Unit may be mounted in any orientation
Control:
On board 24 VAC transformer/relay package
with switched dry contacts
Filters:
Total qty. 2, MERV 8, spun-polyester media:
9 5/8" x 10 1/2" x 1"
Unit Dimensions & Weight:
22 1/2" L x 11 3/4" W x 23 3/4" H
36 lbs.
Max. Shipping Dimensions & Weight (in carton):
29" L x 22" W x 15" H
40 lbs.
Motor(s):
Qty. 2, Standard motorized impeller blowers
Accessories:
Backdraft damper 6"
Wall cap 6" - white, brown
Percentage timer control (PTL)
Push-button point-of-use controls (PBL), PTL req'd.
Percentage timer control with
furnace interlock (FM)
ELECTRICAL DATA
HP Volts HZ Phase Input Watts FLA
0.03 120 60 Single 46 @ 90 CFM 0.35
UNIT PERFORMANCE CORE PERFORMANCE
Airflow CFM ESP in H20 Temp EFF% Total EFF%
Winter/Summer*
40 0.60 84 74/56
58 0.50 80 69/50
73 0.40 77 65/46
85 0.30 74 62/43
98 0.20 71 59/39
113 0.10 68 56/34
5 7/8" Typ.
22 1/2"
Overall
18"
Case
11 3/4" Overall (with Hanging Bracket)
2 1/4" Typ.
24V AC
Control
Terminal
11 3/4"
Typ.
5 3/4"
Typ.
6 1/4" Typ.
22 1/4" Minimum
Sercive Area
10 1/8" Minimum
Service Area
(Door can be
Removed from
Hinges.)
21 1/4"
OA
EA
RA
FA
Door
Swing
34" Line Cord
23 3/4"
Overall
11 5/8"
Case
21 7/8"
Case
6" Nominal Typ.
8" Nominal Typ.
7/8" Typ.
2 5/8"
25 1/2" Overall
(with Hanging Bracket)
Formed
Inlet Ring
LEFT VIEW FRONT VIEW RIGHT VIEW
TOP VIEW
Model: EV90
Drawing Type: Unit Dimension
Version: MAR16
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.
UNIT DIMENSIONS
SPECIFICATIONS
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.
* See HVI certification ratings on page 135 of RenewAire’s Full Line Volume XVI Catalog.
STANDARD
Note: Electric Duct Heater is not available on the EV90.

RENEWAIRE.COM INSTALLATION, OPERATION AND MAINTENANCE MANUAL 1.800.627.44996
RENEWAIRE.COM 1.800.627.4499
8
SPECIFICATIONS & DIMENSIONS
Specifications may be subject to change without notice.
INDOOR UNIT
EV 90P
SPECIFICATIONS
Ventilation Type:
Static plate, heat and humidity transfer
Typical Airflow Range: 40-110 CFM
Standard Features:
Painted cabinet
Line-cord power supply
Low-voltage circuit for controls
Unit may be mounted in any orientation
Controls:
On board 24 VAC transformer/relay package
with switched dry contacts
Filters:
Total qty. 2, MERV 8, spun-polyester media:
21 3/4" x 10 1/2" x 1"
Unit Dimensions & Weight:
22 1/2" L x 24" W x 23 3/4" H
51 lbs.
Max. Shipping Dimensions & Weight (in carton):
33" L x 22" W x 29" H
65 lbs.
Motor(s):
Qty. 2, Standard motorized impeller blowers
Accessories:
Backdraft damper 6"
Wall cap 6" - white, brown
Percentage timer control (PTL)
Push-button point-of-use controls (PBL), PTL req'd.
Percentage timer control with furnace interlock (FM)
ELECTRICAL DATA
HP Volts HZ Phase Input Watts FLA
0.03 120 60 Single 44 @ 90 CFM 0.35
UNIT PERFORMANCE CORE PERFORMANCE
Airflow CFM ESP in H20 Temp EFF% Total EFF%
Winter/Summer*
42 0.60 86 83/71
56 0.50 85 82/70
73 0.40 84 80/68
87 0.30 83 79/67
99 0.20 82 78/66
108 0.10 82 78/65
11 5/8"
Typ.
23 7/8" Overall
(with Hanging
Bracket)
18" Case
22 1/2"
Overall
2 1/4" Typ.
24V AC
Control
Terminal
6 1/4" Typ.
11 3/4"
Typ.
5 3/4" Typ.
OA
EA
RA
FA
34" Line Cord
23 3/4" Overall
23 5/8"
Case
22 1/4" Minimum
Service Area
(Door can be
Removed from
Hinges.)
22 1/4" Minimum
Service Area
Door
Swing
8" Nominal
Typ.
6" Nominal
Typ.
7/8" Typ.
2 5/8"
21 7/8"
Case
25 1/2" Overall
(with Hanging Bracket)
Formed
Inlet Ring
LEFT VIEW
FRONT VIEW
RIGHT VIEW
TOP VIEW
Model: EV90P
Drawing Type: Unit Dimension
Version: MAR16
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.
UNIT DIMENSIONS
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.
* See HVI certification ratings on page 135 of RenewAire’s Full Line Volume XVI Catalog.
STANDARD
Note: Electric Duct Heater is not available on the EV90P.

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ERVGR90, EV90, AND EV90P
BEFORE YOU BEGIN
Read all instructions before installing the unit. Also review supplemental instructions included with any
controls that will be installed. Carefully unpack and inspect the unit for shipping damage. Open the access
door and inspect inside the unit. Attach the four duct collars to the unit with the screws provided in the
plastic small-parts bag.
PLANNING
YOUR INSTALLATION
INSTALLATION
LOCATION OF THE UNIT
Select a location so that:
• The fresh air intake vent from the outside is placed a minimum of ten feet from any other contaminated
exhaust vent, and is at least 30" long.
• The two ducts to the outside are as short and straight as possible, for the best performance from the
system. Shorter duct runs help assure that the system is balanced: the amount of air brought in is equal
to the amount of air exhausted.
• The door can be opened to allow cleaning the core and filters. Provide clearance at front of unit for
service access to the blowers, filters and energy exchange core. (24" minimum.)
• 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 duct should be about the same length as the fresh air duct.
• The exhaust outlet should not dump air into an enclosed space or into any other structure.
• Do not install the exhaust outlet and fresh air inlet through the roof. If these are the only available
options call RenewAire technical support for help.
The preferred mounting location for the unit is on a concrete foundation wall because the foundation wall
will isolate any blower vibration.
If a basement area is not available or practical, use other mechanical room space such as a closet,
garage, storage, or accessible attic or crawl space.
F1 Service Area
NOTE: If you wish to install the unit in an attic or other unconditioned space, you must insulate all of the
unit’s ductwork that is located in the attic. Use at least R-6 insulation.
5 7/8" Typ.
22 1/2"
Overall
18"
Case
11 3/4" Overall (with Hanging Bracket)
2 1/4" Typ.
24V AC
Control
Terminal
11 3/4"
Typ.
5 3/4"
Typ.
6 1/4" Typ.
22 1/4" Minimum
Sercive Area
10 1/8" Minimum
Service Area
(Door can be
Removed from
Hinges.)
21 1/4"
OA
EA
RA
FA
Door
Swing
34" Line Cord
23 3/4"
Overall
11 5/8"
Case
21 7/8"
Case
6" Nominal Typ.
8" Nominal Typ.
7/8" Typ.
2 5/8"
25 1/2" Overall
(with Hanging Bracket)
Formed
Inlet Ring
LEFT VIEW FRONT VIEW
RIGHT VIEW
TOP VIEW
Model: EV90
Drawing Type: Unit Dimension
Version: MAR16
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.
11 5/8"
Typ.
23 7/8" Overall
(with Hanging
Bracket)
18" Case
22 1/2"
Overall
2 1/4" Typ.
24V AC
Control
Terminal
6 1/4" Typ.
11 3/4"
Typ.
5 3/4" Typ.
OA
EA
RA
FA
34" Line Cord
23 3/4" Overall
23 5/8"
Case
22 1/4" Minimum
Service Area
(Door can be
Removed from
Hinges.)
22 1/4" Minimum
Service Area
Door
Swing
8" Nominal
Typ.
6" Nominal
Typ.
7/8" Typ.
2 5/8"
21 7/8"
Case
25 1/2" Overall
(with Hanging Bracket)
Formed
Inlet Ring
LEFT VIEW
FRONT VIEW
RIGHT VIEW
TOP VIEW
Model: EV90P
Drawing Type: Unit Dimension
Version: MAR16
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.
Provide Adequate Service Access
for Maintenance. The unit will
require regular filter and core
inspections. Install the unit where
you can access the core for
cleaning and replacing the filters,
and where you can get at the
wiring for installation and service.
CAUTION
EV90PEV90/GR90

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PLANNING
YOUR INSTALLATION
INSTALLATION
DUCTS TO THE OUTSIDE
The Exhaust Air Duct and the Outside Air Duct connect the unit to the outside. Flexible insulated duct
is typically used. See Duct Sizes below.
INSIDE DUCTWORK SYSTEM
For houses without ducted heating or cooling
systems – see Figure 3 (F3):
In most houses one or two fresh air grilles in
a central part of the house provide effective
distribution of the fresh air into the home,
particularly when the stale exhaust air is picked up
at several points. Because the fresh air is usually
somewhat cooler than the household air, the fresh
air supply grilles should be located in a traffic area
like a hallway or stairway rather than in a sitting
area. If you want to get fresh air into specific
rooms with high occupancy, you can split up the
fresh air supply.
For houses with forced-air heating and cooling
systems – see Figure (F2), (F4) and (F5):
Most units are installed with the fresh air duct
connected directly to a return duct for the main
heating and cooling system. Be careful to connect
the fresh air duct at least three feet from the return
plenum to minimize suction from the furnace
blower. A connection closer to the furnace may
result in unbalanced flow and associated problems.
For installations that collect stale air from
specific rooms in the home – see Figures (F2)
and (F3):
Locate stale air return grilles (RA) in rooms where
moisture and odors are generated: bathrooms,
the kitchen, and perhaps other areas where
contaminants are generated such as in the home
workshop. Return grilles in these other areas may
be dampered so that they can be shut off when
not in use. A central location such as a hallway is
also acceptable but won’t clear humidity and odors
from baths and kitchens as rapidly. Locate stale air
return grilles (RA) near the ceiling on inside walls.
Stale air returns are usually easiest to install in
interior partitions.
Stale Air Return Grille Sizes
Bathroom: 4" X 10" or 6" X 10" - 40 to 60 sq. in.
Kitchen: 6" X 10" or 60 sq. in.
Can an ERV be used to ventilate bathrooms?
A RenewAire ERV can be used as a central exhaust
system in place of bathroom exhaust fans. Tie a
grille in each bathroom directly back to the ERV
– see Figure F2. A successful installation should
provide at least 50 CFM of exhaust per moisture
producing bathroom. When used for bathroom
exhaust, the EV90/P should be used for only
one bathroom. Install a control in the bathroom
ventilated by the ERV (see Controls, page 12-13).
For houses where radon is a concern:
The first line of defense against radon should
always be techniques that prevent the entry of
radon into the home, such as under-slab suction,
vented perimeter drainage, and crack sealing.
However, if moderate levels of radon continue to
be present, it is important that the unit slightly
pressurize the basement, not de-pressurize the
basement.
Installation of this unit for radon mitigation is
beyond the scope of this manual. Consult a radon
mitigation professional.
Exhaust Air & Outside Air
(EA & OA)
6" round insulated duct
8" round insulated duct may be used to maintain maximum airflow
Fresh Air & Stale Air (FA & RA) 6" round or 8" oval rigid un-insulated
All ducts from unit to house in unconditioned spaces like attics and crawl spaces MUST BE INSULATED.
DUCT SIZES
DO NOT PLACE ANY STALE AIR
RETURNS IN GARAGES.
WARNING

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INSTALLATION
F2 F3
F5
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Separate Room Air Pick-up -
Fresh Air to Furnace Return Air Trunkline
Furnace Return Air Back into Return Air
Separate Return Air and Fresh Air Supply
Note: ERV blower may be operated separate from furnace blower.
*Use caution to introduce FA at low velocity and where good mixing will occur to
minimize discomfort from drafts.
Note: ERV blower may be operated separate from furnace blower.
Note: ERV blower may be operated separate from furnace blower.
Note: The furnace blower must be operated any time the ERV is operated. Use furnace
fan “on” continuous low speed or optional FM control to cycle furnace fan on ERV.
APPLICATIONS
See figures F2-F5 for examples of some common installation approaches.
PLANNING
YOUR INSTALLATION
F4
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EA Exhaust Air
OA Outside Air
RA Room Air
SA Supply Air
FA Fresh Air
F2
* EV90/P only
Return Air Grille
Return Air Grille

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INSTALLATION
PLANNING
YOUR INSTALLATION
1. To avoid motor bearing damage and noisy and/
or unbalanced impellers, keep drywall spray,
construction dust, etc., out of the unit.
2. Do not connect power to the units external control
terminals: this will damage the unit. The external
terminals are for use only with un-powered
controls designed for low-voltage operation.
CAUTION
1. Before servicing or cleaning the unit, unplug
the unit line cord or shut off power at service
switch or circuit breaker. Make sure unit is not
running before opening its door.
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 qualified 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. Connect this unit only to a 120VAC grounded
circuit protected by a 15 amp circuit breaker.
6. Do not install unit or controls where they can
be reached from a tub or shower.
7. This unit must be properly ducted to the outdoors.
8. Outside air inlet for this unit must be located
away from sources of hazardous air such as
auto exhausts.
9. Sufficient air is needed for proper combustion
and exhausting of gases through the flue
(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.
10. 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.
11. When cutting or drilling into wall or ceiling, do
not damage electrical wiring and other hidden
utilities.
12. Use the unit only in the manner intended by the
manufacturer. If you have questions, contact
the manufacturer.
RISK OF FIRE, ELECTRIC SHOCK, OR INJURY. OBSERVE ALL CODES AND THE FOLLOWING:
WARNING

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MOUNTING THE UNIT
Unit may be installed in any orientation
Orient the unit for the simplest duct layout and connections. Note however that the door is equipped with
slide-off hinges. For the homeowner’s convenience it is helpful to orient the unit so that the door does not
drop off when it is unlatched.
Mounting the EV90/P on a concrete foundation wall
Mount hanging bracket to the wall with appropriate concrete anchors. Use pre-cut foam tape from small
parts bag. Remove backing and apply two pieces of foam tape equally spaced along the unit’s mounting
flange to be held by the hanging bracket. Apply the other two pieces of foam over two holes that will be
used for fastening, on the other flange. The tape should be applied in a “U” shape to cushion both the
front and back of the integral flanges. Lift unit and slide unit flange into the hanging bracket. Using metal
flat washers, fasten flange opposite hanging bracket to structure. Safety screws should similarly be
installed passing through the hanging bracket and flange. Make sure the screws, which you must supply,
are properly selected for the loads and substrate involved.
INSTALLATION INSTRUCTION
INSTALLATION
Risk of injury when lifting unit
and installing it overhead. Get a
helper and wear eye protection.
CAUTION
* EV90/P only.
Foam Tape
Foam Tape
Metal Washer
Lag Screw or Concrete Anchor
(provided by others)
Lag Screw or Concrete Anchor
(provided by others)
Unit Flange
Optional Washer and Screw
(provided by others)
Hanging Bracket
F6 Mounting the ERV to a stud wall
ELECTRICAL CONNECTIONS
NOTE: DISCONNECTION MEANS
Most electrical codes require that the unit be disconnected for service. Depending on local codes, an
electrical outlet (for EV90/P) or an on/off switch available for the unit (GR90) may satisfy this requirement.
Power supply connection to GR90 is made in its electrical box through the hole in the end pan. Pull out the
unit electrical box and connect the power wire conductors to the terminal block inside the electrical box.
The terminal block inside the electrical box is conveniently marked for connection of field power wiring.
After connecting the power wire conductors to the terminal block re-install the electrical box in the unit.
RenewAire offers the EV90/P with a line cord for connection to an electrical outlet. If an EV90/P with a
line cord is installed and the installer desires to convert to field power wiring, should local codes permit,
simply remove the line cord from the terminal block and connect field wiring as described above.
Mounting the EV90/P to a stud wall
Mount unit using supplied hanging bracket kit as described for
mounting to concrete foundation wall. Note that the hole layout on
the integral mounting flanges and the hanging bracket are spaced for
16" on-center framing patterns.
Suspending the EV90/P from floor joists or trusses
The unit may be screwed directly to joists or trusses using the
hanging bracket and integral flange. Mount as described for
mounting to concrete foundation wall. Note that the hole
layout on the hanging bracket is spaced for 16" on-center layouts.
Mounting the GR90
The GR90 can be mounted similar to the EV90 however, the GR90
does not come with a hanging bracket. Using flat washers provided,
install screws through the holes in the flanges of the unit. Make sure
the screws, which you must supply, are properly selected for the loads
and substrate involved.

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Do not place any stale air returns
in garages.
CAUTION
CAUTION
Do not connect Dryers to unit.
Do not connect Range Hoods to
the unit.
INSTALLATION INSTRUCTION
INSTALLATION
INSTALLING RETURN AIR (RA) DUCTS:
All the stale air returns are connected by ducts to the unit. Generally, empty stud cavities are used for
returns as is often done with cold air returns for the furnace, using standard duct boots to connect to six
inch pipe at the bottom or top of the wall cavity. Always be sure to seal all joints with duct sealant or tape.
Some local codes may require metal ducting all the way from the boots to the stale air grilles. Use rigid
ducts to allow the air to move freely and easily through the ducts. See chart under Exhaust and Outside
Air Ducts to size your ductwork.
If duct runs are very long (over 30 feet of flex duct for 90 CFM) or have excessive bends or elbows or if
maximum air flow rates are required, eight inch insulated flexible duct should be used. The outer flange of
the duct collar can be used for both the inner and outer jacket of the flexible duct. Care must be taken to
ensure that the duct is securely fastened and sealed to the duct collar.
Do not use more flex duct than necessary!
Flex duct is much more resistant to airflow than rigid duct; longer runs of flex duct will reduce the
ventilation performance of your system. Stretch flex duct and avoid sharp bends.
NOTE: Seal all duct collars at unit to minimize air leakage.
INSTALLING OUTSIDE AIR AND
EXHAUST AIR DUCTS
Ducts connecting the unit to the outside must be
well-insulated. Vapor barrier is required on both
inside and outside of the insulation.
Band or tape inner duct liner to inner flange of
appropriate collar. Drive a sheet metal screw
through liner to secure duct spiral wire to collar.
Straighten insulation, and slide outer duct jacket
onto the outer flange of the duct collar. Secure
with band or tape.
The vapor barrier should be continuous and sealed
against air and moisture leakage! If not, condensa-
tion or ice may form in cold weather on the duct
surface or in its insulation!
CAUTION
The inlets and outlets should be screened against
insects and vermin and shielded from the weather
to prevent the entry of rain or snow.
CONTROLS
For an installation in which the ERV should run
continuously in order to provide the required
ventilation rate for the home, no controls are
needed. However, in most installations, control
over the unit operation is desired and this is best
provided by a Proportional Timer.
Proportional timers (PTL or FM controls for EV90/P
or line voltage controls for GR90) may be located
anywhere that is convenient. A typical location for
CAUTION
INSTALL FRESH AIR INLET
AWAY FROM SOURCES OF
CONTAMINANTS.
• Do not locate the fresh air
inlet where vehicles may be
serviced or left idling.
• The fresh air inlet should be at
least ten feet away from any
exhaust such as dryer vents,
chimneys, furnace, and water
heater exhausts or other
sources of contamination or
carbon monoxide.
• Install 12" above ground level.
• Never locate the fresh air inlet
inside a structure.
either control is next to the home’s thermostat.
Proportional timers operate the ERV to provide
regular background ventilation of the home.
EV90/P installations that pull stale air from specific
rooms, such as bathrooms, should have Push-
Button Lighted (PBL) Controls in those rooms. The
secondary operating controls allow the system to
be turned on from various locations in the house.

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INSTALLATION
OPERATION & START-UP
INSTALLATION INSTRUCTION
START-UP
Optional controls:
RenewAire offers a variety of controls specifically designed to work with the EV90/P. These include:
PTL (a two wire proportional timer), FM (a six wire proportional timer that interconnects to the furnace
blower), and PBL (point of use push button control). Other controls that throw an unpowered switch may
also be used.
The GR90 is a line voltage unit that may be controlled with any line voltage control switch.
Typical control schematic:
Various wiring designs can be used to properly control the unit and meet safety and code concerns.
Consult your electrician for an electrical design to meet your needs. The schematic below shows a typical
control system: a PTL proportional timer plus two PBL push-button controls.
F7 Typical Control Schematic
DANGER OF ELECTRICAL SHOCK WHEN SERVICING AN INSTALLED UNIT.
ALWAYS UNPLUG UNIT BEFORE CONNECTING OR SERVICING CONTROLS.
WARNING
STARTING UP THE UNIT
• Inspect your installation to be sure all duct work
is correctly installed and sealed, that filters are
in place, and controls (if any) are connected.
• Shut and latch the door to the unit.
• Provide 120 VAC power to the unit. It may start
immediately.
• Use control, if any, to turn on the unit. Check
operation of the control(s).
• Check that the unit’s safety interlock switch
turns off the unit when the door is opened.
INSTALLING CONTROLS
The EV90/P is offered with a control board for connection to external controls. The GR90 runs continuously
whenever power is supplied to it.
* EV90/P only (not GR90)
Up to (6) PBL Controls, wired in parallel, may be used.
ERV PTL PBL
1
Only (2) PBL Controls can be directly connected to the PTL Control.
Wire any additional PBLs in parallel with the first two.
R
C
PB
PB
PBL
2
PBL
3
See installation manuals for the control(s) you select for wiring diagrams and specific instructions.
If NOT connecting controls to the EV90/P:
Make a jumper out of a short piece of wire. Connect the jumper wire to the screw connections of the
terminal strip on the outside of the unit. ERV runs full-time once its power cord is plugged in.

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MAINTENANCE
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MAINTENANCE
REQUIREMENTS
Keep your ERV performing at its best by cleaning it as described below:
TO CLEAN THE ENERGY EXCHANGE ELEMENT
1. Remove the filters (see below).
2. Vacuum the exposed faces of the energy exchange core with a soft brush attachment.
3. After servicing the filters, re-install them (see below).
4. Vacuum out dust from the rest of the unit case. Dust collects only on the entering faces of the energy
exchange core. The interior of the energy exchange core stays clean even if the core faces are dust covered.
The RenewAire core airflow paths are designed to transport the air in a laminar motion. The core flutes
move the air in a laminar airflow such that particulate deposition is maintained at virtually nill.
INSPECT AND CHANGE THE FILTERS REGULARLY
Service filters every three months when the unit is in regular use or as needed to keep them
reasonably clean.
1. Release cam latches and carefully swing access door open. Remove the door by sliding to one side.
2. Remove filter clips.
3. Pull the filters out.
4. Vacuum with a hose attachment.
5. Re-install filters and filter clips, (see Service Parts, page 14). Orange side of filter should
face the core.
6. Re-install door, and fasten cam latches.
NOTE: The filters should be replaced after they have been cleaned several times. The primary contact for
replacement filters for your RenewAire unit is the installing contractor. As an alternative, you may wish to
produce your own filters. Please follow these instructions:
Filters may be cut from a sheet or roll of ¾" - 1" firm, spun polyester filter “hog hair” media or
material, similar to the existing filter in the residential unit.
The size of each filter (2 required per unit) is as follows:
EV90/GR90 9 ½" x 10 ½"
EV90P 21 ¾" x 10 ½"
Call your HVAC contractor or RenewAire for further information.
NOTE: Filters must be used or the face of the energy exchange core will become blocked by dust and
reduce unit efficacy. The filters supplied in the unit are usually able to keep the energy exchange core
clean for many months. Finer filters can be used but must be cleaned more often.
MOTOR MAINTENANCE
The blower/motor package needs no lubrication:
Vacuum clean the blower wheels at the same time you clean the face of the energy exchange core.
Confirm blower wheel is not rubbing against the blower inlet or housing by rotating wheel manually.
GENERAL CLEANING AND INSPECTION
Perform general cleaning and visual inspection when changing filters.
1. Remove paper, leaves, etc. from inlet and outlet screens.
2. Inspect for insect nests.
RISK OF ELECTRIC SHOCK
OR INJURY.
• Before servicing or cleaning the
unit, unplug the unit line cord.
• Make sure unit is not running
before opening its door. Blower
wheels are sharp and can cut.
• Do not disable the interlock
switch: it is there for your
safety.
WARNING
DO NOT WASH THE ENERGY
EXCHANGE CORE.
Keep it away from water or fire to
avoid damaging it. Always handle
the core carefully.
CAUTION

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At RenewAire — unlike other ventilation suppliers — advanced ventilation solutions are all
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and the only name you need to know.
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