Greenheck PVe-20 User Manual

Heat Recovery Ventilator

Model PVe

• Light Industrial • Commercial • Institutional

• 1,000 - 6,000 cfm

• 2.0 in. wg External Static Pressure

• Aluminum Plate Heat Exchanger

October

2009

Model PVe

Greenheck’s model PVe is a sensible idea for your fresh outdoor air needs. This aluminum plate air-to-air, heat
recovery unit transfers sensible (heat) energy from the exhaust airstream to the supply airstream. This provides
pretempered fresh outdoor air to your building, allowing you to reduce the size of your heating and cooling
equipment, resulting in lower utility bills, year round.

Additionally, the plate heat exchanger has no moving parts, requiring less maintenance to provide healthy
outdoor air to the building occupants. Light industrial applications, as well as bathroom and locker room
exhaust, are great places to use Greenheck’s model PVe in addition to clean air applications. Typical plate heat
exchanger ventilator applications are listed below.

Animal Shelters Bars and Clubs Churches Dormitories

Locker Rooms Nursing Homes Office Buildings Printing Shops

Restaurants Schools Function Halls Casinos

Veterinary Hospitals Bus Garages Maintenance Shops Auto Repair Facilities

Design Features:

Aluminum Heat Exchanger

1

• AHRI Standard 1060 Certified
Performance

• High Heat Transfer

up to 70%

• Corrosion-Resistant

• Cross Airflow Pattern

• Low Static Pressure

1-inch double-wall construction

2

with 18 gauge outer and 24 gauge
inner galvanized steel panels,
alternative coatings available as an
option. Double-wall construction
protects insulation from moisture and
prevents insulation fibers from entering the
airstream. Insulation is 1.5 lbs/ft³density.

Downturned hood design lowers supply air intake

3

velocities to prevent rain and snow from being
pulled into the unit. Each hood has washable
aluminum mesh prefilters blocking debris
orleaves.

Integral Filter Rack Design

4

• 2-inch (51mm) MERV 8 filters included as a
standardoffering

Fork-able base and lifting locations cut into the

5

base for quick and easy jobsite off-loading and
unitsetting.

3

8

1

4

6

5

Solid integral base with ½-inch upturned lips

6

around bottom openings, perimeter, and joints
prevent water from leaking through the base into
the building.

Integral stainless steel drain pan that is double-

7

pitched for true condensate drainage.

Reliable frost control protection with an optional

8

electric preheater.

7

5

2

Additional Features:

• Quiet running, forward-curved blowers

• Adjustable motor pulleys for final
systembalancing

• Factory provided motor starters and
disconnectionswitch in a sealed control center

• Neoprene isolation on blower assembly to
minimize sound and vibration transmission

2

• Door seals utilize a superior bulb-design with
four blades to provide a tight seal to prevent
water penetration. The durable and flexible
design offer years of service

• Liftoff door design with hinges for easier
inspection and dual door handles to provide a
secure and tight seal for gasketing

Standard Operation

How does the Plate Heat Exchanger work?

Improving building indoor air quality, requires fresh outdoor air be provided to the building. Therefore, by code,
most buildings must have a certain amount of exhaust and outdoor air always moving in and out of the building.
A plate heat exchanger ventilator combines both airstreams into one unit, and transfers energy between the
airstreams, while keeping the air separated. All year long the plate heat exchanger is working to reduce energy
consumption while meeting the air supply requirements of your building.

Winter Operation

On cold winter days, the unit significantly helps
heat the outdoor air coming into the building. The
warm exhaust air (return air) heats up the plate
heat exchanger on the way out of the building.
When the cold outdoor air hits the warm plate heat
exchanger, it gets conditioned up to 70% of the
way to the return air temperature. In this example,
if your space is heated to 72°F(22°C) during the
winter, on a 0°F (-18°C) day, the air coming off
of the plate heat exchanger (supply air) would
be 50°F(10°C). The heating equipment now only
needs to heat from 50 to 72°F (10 to 22°C), rather
than 0 to 72°F (-18 to 22°C) saving significant
amounts of energy all winterlong.

Outdoor Air

0°F

-18°C

Return Air

72°F

22°C

Heat Recovery Technology

PVe Plate heat exchanger

Exhaust Air

22°F

-6°C

Supply Air

50°F

10°C

Summer Operation

On hot summer days, the unit takes cool
conditioned air from the space and passes it
through the plate heat exchanger on the way out
of the building. When the hot summer outdoor
air hits the cool plate heat exchanger, it gets
conditioned down almost 70% of the way to
the space temperature. In this example, if your
space is air-conditioned to 75°F (24°C) during the
summer, on a 105°F (41°C) day, the air coming
off of the plate heat exchanger (supply air) would
be 84°F (29°C). The cooling equipment now only
needs to cool from 84°F (29°C) to 75°F (24°C)
saving significant energy throughout the summer.

Outdoor Air

105°F

41°C

Return Air

75°F

24°C

Heat Recovery Technology

PVe Plate heat exchanger

Certifications

PVe’s construction is matched with extensive in-house testing and third-party verification of
performanceandsafety.

Greenheck Fan Corporation certifies that the PVe
models shown herein are licensed to bear the AMCA

Licensed to bear the AMCA seal for
AirPerformance

seal. The ratings shown are based on tests and
procedures performed in accordance with AMCA
Publication 211 and comply with the requirements of
the AMCA Certified RatingsProgram.

Exhaust Air

96°F

36°C

Supply Air

84°F

29°C

Unit is ETL Listed — all internal
electrical components are factory wired
to a single-point power connection

AHRI Standard 1060 certified plate heat
exchanger performance assures the
PVe model will function as required in
demandingenvironments

Every unit is tested at the factory before it is shipped
to the jobsite.

®

Heat recovery plate exchangers are certified by
the AHRI Air-to-Air Energy Recovery Ventilation
Equipment Certification Program in accordance with
AHRI Standard 1060. Actual performance in packaged
equipment may vary. Certified ratings are available
in the Certified Product Directory at http://www.

ahridirectory.org/ahridirectory/pages/home.aspx

3

What is the Benefit of
Greenheck Energy Recovery?

For the Building Owner

• Improved Indoor Air Quality

Introducing fresh, outdoor air to a building is a key component to sustaining excellent indoor air quality.

Outdoor air can be very expensive to heat and cool, but the PVe unit can provide an economical approach to
delivering outdoor air into a building.

• Energy Savings = Quick Payback

The energy recovery unit provides energy savings throughout the year. In the summer, the energy recovery

unit removes heat out of the outdoor air and in the winter, heat is added back into the fresh airstream. When
you combine the energy savings from summer and winter operation, they lead to a very fast payback period.

For the Maintenance Personnel

• Low Maintenance Equipment

Heat Transfer Plate Exchanger: The aluminum plate heat exchanger is a major

component in the PVe and will require some minimal maintenance. The plate
heat exchanger is removable, making the cleaning quick and easy. To clean
the plate heat exchanger, wash it with water mixed with a light detergent,
rinse with water and let dry. This should be done as often as needed for the
particular application, however, most applications will only need cleaning
once every 5-10 years. Occasionally vacuuming off the face of the plate heat
exchanger is suggested for optimum air performance, which should be done
more frequently depending on the air quality in your location.

Fans: The blowers that are used in the PVe are centrifugal, forward-curved-

type fans. These fans come with easy to adjust pulleys, belt tension bolts and
permanently sealed bearings.

Filters: The 2-inch, 30% efficient MERV 8 filters that are included with the unit are designed for easy access

andremoval.

• Quality Construction

Greenheck has focused on the manufacturing and unit designs

to create well-constructed equipment. Investments in automated
manufacturing processes provide accurate and repeatable
results, giving excellent part fit and unit strength. Incorporation of
innovative designs add to the quality while keeping maintenance
work simple to perform.

• Long-Lasting Equipment

Because of our high-quality construction, the equipment that goes

to the field is made to last. As reassurance to the customer, each
PVe unit carries a one year warranty from the ship date.

4

What is the Benefit of
Greenheck Energy Recovery?

For the Design Engineer

• Adhering to ASHRAE Guidelines

ASHRAE Standard 90.1
ASHRAE 90.1 provides design guidelines regarding when it is most beneficial to use energy recovery.

Depending upon your geographic location and the percentage of outdoor air required for the application,
ASHRAE recommends when to use energy recovery. An important part of this guideline is that when energy
recovery is recommended, the device should be AHRI 1060 Certified.

ASHRAE Standard 62
ASHRAE 62 allows certain amounts of leakage from airstream to airstream when using energy recovery equipment

depending on the quality of the air being exhausted from the building. Plate heat exchangers have a low leakage
design, allowing up to Class 3 air to be exhausted through the AHRI Certified device.

• LEED Certification Credits

For Green Building designs, the PVe offers an excellent way to acquire credits in both Energy

and Atmosphere (EA) and indoor Environmental Quality (EQ) categories towards a LEED
certification.

Prepared to Support

• CAPS Program

CAPS is Greenheck’s comprehensive product selection program. The CAPS program was

developed with ease of use and fast selections in mind. There is also useful information
available for making selections and educating people who are new to energy recovery
technology. CAPS also provides submittals which include unit overviews, electrical
information, fan charts, arrangements, engineering drawings, payback information, and
psychrometric processes.

Green Building Efforts

• Industry Certification

To ensure performance on the jobsite, Greenheck emphasizes the need for the three major industry

certifications for energy recovery units: AMCA Licensed for Air Performance, ETL Listed for safety, and AHRI
Certification on the plate heat exchanger.

• CSI Specifications

After a unit has been selected in CAPS, an accurate unit specification is available for use in the job

specification. These specifications have been recently updated to the CSI format.

For the Contractor

• Easy Installation

- Fork-able Base

- Integrated Lifting Holes

- Single-Point Power

These are just a few of the built-in features to make the installation process quick and easy. Also, our

comprehensive Installation, Operation, and Maintenance Manual is available online, so the information you
need is quick and easy to obtain.

• Product Approval

Form, fit and function, the PVe was designed to operate in nearly every commercial and institutional

application. With over 12 years in the energy recovery market, our energy recovery ventilation product line is
well known and accepted throughout the industry.

Fork-able Base

• One Year Warranty

Our one year unit warranty lets you to rest easy knowing that we stand behind our product. With the aluminum

plate heat exchanger design, there are no moving parts on the heat transfer device, which means there’s
nothing to wear or break over time.

5

Accessories

Low-Leakage Dampers — Internally mounted for
both supply and exhaust

Where code requires low-leakage
dampers they can be provided to keep
the cold weather out in the winter, or
hot and humid weather out during the
summer. Since the dampers are wired
to a single-point power source, a simple
run command sent to the unit, powers
the dampers open. When your unit is off during
unoccupied hours, the dampers close to keep the
outdoor air out.

Air Filtration — High-Efficiency Filters

The PVe comes standard with 2-inch
(51mm) MERV 8, 30% efficient filters.
Optional MERV 13, 85% efficient filters
are available to help meet additional
LEED requirements or to simply improve
the quality of your indoor air.

Painted Exterior

For added aesthetics combined with
a long-lasting finish, Greenheck offers
many different paint options. In addition
to prepainted Permatector™ many
additional baked enamel paint colors are available to
customize your unit.

Roof Curbs

For a cohesive fit between
the PVe and your building,
Greenheck offers a pre­engineered curb design. They
are available with duct adaptors
to simplify field duct installation
and get the unit up and running morequickly.

Remote Panel

With the optional remote panel,
you have control and the
information you want. Monitoring
lights, on/off time-clock control,
or on/off/auto switch are a few
of the available options. So
whether you want to control the
unit operation via a 7-day time
clock or simply want to monitor unit performance,
the remote panel is the option that provides valuable
information.

Dirty Filter Sensors

Filters require scheduled maintenance to improve
air quality and system efficiency. A dirty filter sensor
allows you to minimize maintenance frequency to only
when it is needed. The dirty filter kit senses when
the filters are dirty and sends a signal to our built-in
control center. Greenheck offers an optional remote
control panel and a “clogged filter” light to tie the
signal into.

6

PERMATECTOR™

Factory Mounted Sensors

Amp Draw, Pressure, Temperature: To get the
information you need to know and where you need to
measure it, Greenheck offers factory mounted sensors
that are tied to the unit’s control center. These
sensors can be used to simply monitor unit operation
or to actively control the unit with controls provided
byothers.

Amp Monitor
Blower amp draw can be monitored

through the use of an amperage
sensor. These sensors allow for either
an analog or digital output based on

your system needs.
Plate Heat Exchanger Pressure Sensors
In each airstream, a pressure sensor

is available to monitor where the

plate heat exchanger is operating.

Plate heat exchanger pressure can

be used as a CFM gauge as the

aluminum plate heat exchanger is

a laminar flow device (i.e. a specific

pressure equals a specificCFM).
Temperature Sensors
Plate heat exchanger performance

can be determined with factory

mounted temperature sensors. Every

compartment can be monitored to

determine how your unit is operating.

CO2 Sensor

A good indicator for building health is low levels of
carbon dioxide (CO2 ). Greenheck offers a
CO2 sensor, that can be used to engage
the unit based on CO2 levels, or it can
increase or decrease airflow through
the use of a variable frequency drive
(VFD) on the blowers. The CO
can be unit mounted or space mounted
depending on your application.

Service Outlet

While performing minimal maintenance on your PVe, a
service outlet can provide power when and where it’s
needed. Shipped loose, the outlet can be mounted in
the correct location for your building.

Vapor-Tight Lights

Access doors provide natural lighting during the day,
but there may be times when more light is needed to
see properly inside the unit. To increase bulb life and
to protect the bulb, Greenheck offers a vapor-tight
glass bulb cover.

Blower Variable Frequency Drives

VFD’s are a great tool to control airflow
to the space or to maintain duct
pressures. With this optional feature,
two VFD’s are utilized, one per fan for
independent and flexiblecontrol.

sensor

2

Accessories

Economizer Control (Free Cooling)

Take advantage of cool outdoor air to handle space loads. A call for cool air is sent to the unit’s control center
which triggers the optional plate heat exchanger bypass economizer sequence.

Plate Heat Exchanger Bypass - Open/Closed

Integral face and bypass dampers allow cool air to bypass the plate heat exchanger when it’s in
the free cooling range (temperature or enthalpy). When the conditions are too warm or cold, the
dampers cycle back to allow heat recovery.

Frost Protection

Cold climates, in combination with higher indoor humidity levels, may cause frost to form on the heat recovery
plate heat exchanger. To protect against frost, the leaving air temperature of the plate heat exchanger is
measured in the exhaust airstream to ensure the plate heat exchanger is not frosting. If the temperature of
the plate heat exchanger falls below 32ºF (0ºC) (field adjustable) signaling a frosting condition, the unit enters
into frost control mode. One of three frost control methods described below are available depending on your
application.

Timed Exhaust Frost Control

The supply blower cycles on and off based on a factory provided timer. With the
supply blower off, the warm exhaust air melts the frost. Once the adjustable timer
completes its cycle, the supply blower returns to normal operation. Minimum on
and off times can be programmed to avoid short cycling.

Plate Heat Exchanger Bypass - Open/Closed

When the temperature of the exhaust air leaving the exchanger drops below the
adjustable set-point, the face and bypass dampers allow air to bypass the plate
heat exchanger, allowing warm exhaust air to melt the frost. Once the exhaust
air temperature rises above the adjustable set-point, the unit returns to normal
operation.

Preheat Frost Control

An electric preheater is built into the PVe outdoor air intake. When the temperature
of the exhaust air leaving the plate heat exchanger drops below the adjustable
set-point, the preheater engages. Once the exhaust air temperature increases, the
preheater shuts off.

7

Dimensional Data

Filters

Filters

Face/Bypass Damper

Plate Ventilator

Outdoor
Air Hood

B

AD

CLEARANCE

C

D

D

CLEARANCE

C

D

D

Quick Select Chart

Model PVe-20 PVe-35 PVe-45 PVe-55

CFM

Unit Range

3

m

/hr

Motor HP

External Static
Pressures (in. wg)

**Weight

** The weights shown are a worst case scenario based on the sheet metal and component weights for the unit. These weights
include sheet metal weights added together with the largest motors, blowers and accessories for the units.

Minimum 1000 2000 3100 4000

Maximum 2200 3400 4500 6000

Minimum 1699 3398 5267 6796

Maximum 3738 5777 7646 10194

Minimum 0.25 0.50 1.00 1.50

Maximum 2.00 3.00 5.00 5.00

Minimum 0

Maximum 2.00 (496 Pa)

lbs 1300 1600 2100 2700

kg 590 726 953 1225

Overall Unit Dimensions

Unit Size A B C D E

PVe-20 104.1 (2650) 59.7 (1520) 41.5 (1060) 20.3 (520) 20.7 (530)

PVe-35 104.1 (2650) 59.7 (1520) 49.2 (1250) 25.2 (640) 17.7 (450)

PVe-45 110.6 (2810) 59.7 (1520) 61.1 (1560) 25.2 (640) 19.0 (490)

PVe-55 116.5 (2960) 59.7 (1520) 76.1 (1940) 25.2 (640) 23.8 (610)

All dimensions are shown in inches (millimeters). Door handles, hinges and other protrusions are not included in the dimensions
above. Dimensions are rounded up to the nearest .1 inch (2.54 millimeters).

Outdoor
Air Hood

Outdoor Air Hood

Filters

Face/Bypass Damper

Filters

Bypass
Damper

Face
Damper

Filters Filters

AD

Plate Ventilator

Plate
Ventilator

Exhaust
Air Hood

Control Center

B

E

C

8

Dimensional Data

CLEARANCE

B

C

A

D

Intake and Discharge Options

Option Bottom Top Side End

OA Intake X

SA Discharge X X

RA Intake X

EA Discharge X

OA - Outdoor Air
SA - Supply Air (to the space)
RA - Return Air (from the space)
EA - Exhaust Air

OA Intake

RA Intake

EA Discharge

B

A

SA Discharge

D

C

E

F

Duct Dimensions

Model A B C D E F

PVe-20 10.7 (280) 12.2 (310) 10.3 (270) 11.8 (300) 22.0 (570) 14.0 (360)

PVe-35 11.9 (310) 13.7 (350) 11.4 (290) 13.1 (340) 34.0 (870) 14.0 (360)

PVe-45 14.1 (360) 16.0 (410) 13.3 (340) 14.5 (370) 46.0 (1170) 14.0 (360)

PVe-55 16.4 (420) 19.2 (490) 15.9 (450) 18.6 (480) 60.0 (1530) 14.0 (360)

All dimensions are shown in inches (millimeters).

Clearances

Unit Size A B C D

PVe-20

36 (920) 36 (920) 36 (920)

PVe-35 48 (1220) 36 (920) 36 (920) 60 (1530)

PVe-45 60 (1530) 36 (920) 36 (920) 60 (1530)

PVe-55 72 (1830) 36 (920) 36 (920) 60 (1530)

All dimensions are shown in inches (millimeters). The weatherhoods include 2-inch
aluminum mesh filters that are removed out of the end of the hood as shown in this
drawing and require extra clearance for removal.

60 (1530)

C

CLEARANCE

A

D

D

B

CLEARANCE

9

Performance Data

The AMCA seal for Air Performance is vitally
important for ensuring the proper amount of fresh,
outdoor air is being delivered to the building.
Performance as cataloged is assured. All PVe sizes
are tested in our AMCA Accredited Laboratory
and all models are licensed to bear the AMCA Air
Performance seal.

CFM OV

1000 1205

1600 1928

2200 2651

Model PVe-20

CFM OV

2200 2157

2800 2745

3400 3333

Model PVe-35

FRPM 692 879 1037

BHP 0.12 0.19 0.25

FRPM 881 1034 1165 1284 1394 1494 1592 1690

BHP 0.35 0.45 0.55 0.65 0.75 0.85 0.95 1.06

FRPM 1115 1222 1343 1443 1538 1631 1718

BHP 0.81 0.92 1.07 1.21 1.34 1.48 1.61

FRPM 841 959 1068 1168 1262 1353 1436 1514

BHP 0.54 0.66 0.78 0.91 1.04 1.17 1.31 1.43

FRPM 1011 1105 1199 1288 1371 1451 1525 1599

BHP 1.02 1.17 1.32 1.47 1.63 1.79 1.95 2.12

FRPM 1188 1269 1346 1424 1498 1571 1639

BHP 1.75 1.92 2.10 2.28 2.47 2.66 2.84

0.250 0.500 0.750 1.000 1.250 1.500 1.750 2.000

0.250 0.500 0.750 1.000 1.250 1.500 1.750 2.000

Greenheck Fan Corporation certifies that the
PVe models shown herein are licensed to
bear the AMCA seal. The ratings shown are
based on tests and procedures performed in
accordance with AMCA publication 211 and
comply with the requirements of the AMCA
Certified Ratings Program.

NOTE:

1. Performance tables show EXTERNAL static
pressurecapabilities.

2. Bhp values are shown for one blower motor only.

EXTERNAL STATIC PRESSURE (in. wg)

EXTERNAL STATIC PRESSURE (in. wg)

CFM OV

3400 2361

3950 2743

4500 3125

Model PVe-45

CFM OV

4500 2239

5250 2612

6000 2985

Model PVe-55

Gross supply air performance ratings (airflow, pressure and power) are at port 2 with port 1, port 3 and port 4 at 0.0 in. wg. Gross exhaust performance ratings
(airflow, pressure and power) are to port 3 with port 1, port 2 and port 4 at 0.0in.wg. Performance certified is for installation type D - Ducted inlet, Ducted outlet.
Power rating (Bhp) does not include transmission losses. Performance ratings do not include the effects of appurtenances (accessories).

Model CFM

PVe-20

PVe-35

PVe-45

PVe-55

The air performance data accounts for the pressure drop across the heat recovery plate heat exchanger and the internal housing losses, but does not
include pressure drop for filters or weatherhoods. Add filter and/or weatherhood pressure drop to the external static pressure to determine correct RPM and
horsepower.

1000 0.04 0.05 0.02

2200 0.20 0.25 0.10

2200 0.10 0.10 0.07

3400 0.25 0.25 0.17

3400 0.15 0.18 0.08

4500 0.26 0.32 0.14

4500 0.19 0.18 0.07

6000 0.34 0.32 0.13

30% Efficient Filter

Pressure Drop (in. wg)

FRPM 796 888 977 1055 1130 1198 1268 1336

BHP 1.08 1.27 1.48 1.66 1.87 2.07 2.30 2.53

FRPM 898 976 1056 1132 1200 1265 1328 1387

BHP 1.63 1.84 2.07 2.30 2.52 2.75 3.00 3.23

FRPM 1002 1071 1138 1211 1277 1338 1396 1453

BHP 2.33 2.57 2.81 3.09 3.35 3.61 3.85 4.13

FRPM 613 691 764 833 898 961 1019 1074

BHP 1.27 1.51 1.76 2.01 2.26 2.53 2.81 3.07

FRPM 690 758 823 886 946 1004 1058 1112

BHP 1.91 2.19 2.47 2.77 3.06 3.36 3.64 3.97

FRPM 771 831 890 945 1000 1053 1105

BHP 2.76 3.08 3.40 3.71 4.06 4.38 4.73

0.250 0.500 0.750 1.000 1.250 1.500 1.750 2.000

0.250 0.500 0.750 1.000 1.250 1.500 1.750 2.000

Supply Weatherhood

Pressure Drop (in. wg)

EXTERNAL STATIC PRESSURE (in. wg)

EXTERNAL STATIC PRESSURE (in. wg)

Exhaust Weatherhood

Pressure Drop (in. wg)

10

Typical Applications

OUTDOOR

AIR

OUTDOOR

AIR

The PVe unit can add to the benefit of a building design anywhere that outdoor air is required and the exhaust
air is Class 3 or lower per standard ASHRAE 62-2004. Class 3 air is defined as significant contaminant
concentration, significant sensory-irritation intensity, or offensive odors. With the aluminum plate heat
exchanger’s minimal cross-leakage design, Greenheck has targeted light industrial applications in addition to
commercial and institutional comfort applications.

With Ducted Air Handlers

The PVe unit may be combined with ducted air handling units or fan coil boxes. A single heat recovery ventilator
provides fresh outdoor air for multiple air handling units or in a one-to-one ratio where a single heat recovery
ventilator and air handler serves only one space.

AIR HANDLING

UNIT (AHU)

Heating

Coil

Cooling

Coil

72°F 50% 72°F 50%

ZONE 1 ZONE 2

Heating

Cooling

SUPPLY AIR

AHU

Coil

Coil

RELIEF AIR

OUTDOOR AIR UNIT (OA unit)

WITH HEAT RECOVERY

OUTDOOR

AIR

RESTROOM

Exhaust

Plate

Heat

Exchanger

EXHAUST AIR

Fan

RETURN DUCT

SIDE VIEW

SUPPLY DUCT

With Packaged Rooftop Equipment

This diagram illustrates how heat recovery ventilators may be used in conjunction with packaged rooftop
equipment. Fresh, outdoor air enters the heat recovery ventilator and is pretreated before entering the heating/
cooling equipment. This pretreating occurs because the heat recovery plate heat exchanger is transferring
sensible energy between the outdoor air and the building exhaust air.

Exhaust

Fan

EXHAUST

AIR

SUPPLY DUCT

RESTROOM

Heat
Plate

Exchanger

PLATE HEAT RECOVERY
VENTILATOR (PVe)

SIDE VIEW

72°F

Heating

Coil

RETURN DUCT

ZONE 1

50%

AIR HANDLING
UNIT (AHU)

Cooling

Coil

SUPPLY AIR

11

Greenheck’s Energy
Recovery Models

Model MiniVent - Energy Recovery Ventilator

The MiniVent-450 & 750 are energy recovery ventilators used
for commercial and institutional applications that require 300
to 800 cfm of ventilation air. The compact design provides an
economical solution for individual spaces, such as school
classrooms and small offices.

Model ERV/ERVe - Energy Recovery Ventilator

Low first-cost and maximum energy savings combine to yield
an extremely attractive payback on Greenheck Energy Recovery
Ventilators. By incorporating ERV’s into the HVAC system, air
conditioning and heating equipment can be downsized. Energy
recovery ventilators are perfectly suited to help control humidity.
In the summer, when outdoor humidity is high, the energy wheel
dehumidifies the outdoor air. This greatly reduces the latent load
on the air conditioning equipment and also eliminates rising indoor humidity levels that can occur in
hot, humid climates. In the winter, when outdoor air is dry, the energy wheel humidifies the air. This
increases comfort and reduces the amount of humidification required. Capacities for model ERV
range from 400 to 12,000 cfm with external static pressure capabilities to 1.5 in. wg. Capacities for
model ERVe range from 1,000 to 6,000 cfm with external static pressure capabilities to 1.0 in. wg.

Model ERCH - Energy Recovery with Cooling and Heating

The model ERCH combines the benefits of the total energy wheel with
supplemental cooling and heating. The result is a product that is specifically
designed to process 100% outdoor air to desired supply conditions. Four
housing sizes provide airflow capacities from 1,000 to 10,000 cfm with external
static pressures to 1.5 in. wg. A variety of tempering options are available. The
coil section of the ERCH accommodates a cooling coil, a heating coil, or both.

Model VER - Versatile Energy Recovery

The Model VER is a fully featured, versatile energy recovery unit with a wide range
of heating and cooling options available. The unit includes an energy wheel to
pretemper the outdoor air which reduces the heating and cooling equipment
needed, while also lowering operational costs. In addition to the standard heating
and cooling options, the VersiVent has options such as environmentally friendly
R410a refrigerant, a wrap-around heat pipe for additional dehumidification and
reheat capacity, and a quiet, efficient, plenum supply fan. Capacities range from
2,000 to 10,000 cfm with external static pressure capabilities to 3 in. wg.

Model APEX - Affordable, Practical, Energy Exchanger

The APEX combines high airflow capacities with cost-saving energy recovery
ventilation by providing centralized outdoor air distribution and reducing the
need for multiple unit installations. Fresh outdoor air is preconditioned by the
total enthalpy wheel, which recovers a majority of the energy from the exhaust
air. It saves 3-4 tons of cooling per 1,000 cfm and saves 50-60 MBH of heating
per 1,000 cfm. Easy to install and operate with airflow capacities that range
from 10,000 to 20,000 cfm and external static pressures to 2.5 in. wg.

Our Warranty

Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the shipment date. Any units or parts which prove defective during the warranty
period will be replaced at our option when returned to our factory, transportation prepaid. Motors are
warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck
prove defective during this period, they should be returned to the nearest authorized motor service
station. Greenheck will not be responsible for any removal or installation costs.

As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.

Prepared to Support

Green Building Efforts

Greenheck P.O. Box 410 • Schofield, WI 54476-0410 • Phone [phone] • greenheck.com

Copyright © 2009 Greenheck Fan Corp. • Catalog PVe Rev. 2 October 2009 IP