LG AR-DR12-07A, AR-DR12-12A, AR-DR12-10A, AR-DR22-15A, AR-DR22-20A Installation And Operation Manual

...

ROOFTOP DEDICATED

OUTDOOR AIR SYSTEM (DOAS)

VX MODELS

INSTALLATION AND OPERATION MANUAL

Base Rooftop DOAS

800 to 5750 CFM

Energy Recovery Wheel Rooftop DOAS

900 to 9550 CFM

PROPRIETARY DATA NOTICE

This document, as well as all reports, illustrations, data, information,

and other materials are the property of LG Electronics U.S.A., Inc., and are

disclosed by LG Electronics U.S.A., Inc. only in confidence.

Do not throw away, destroy, or lose this manual.

Please read carefully and store in a safe place for future reference.

Content familiarity is required for proper installation.

The instructions included in this manual must be followed to prevent product malfunction, property damage, injury, or death to the user or other people. Incorrect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the symbols described by the summary list of safety precautions on page 4.

For more technical materials such as submittals, catalogs, engineering

manuals, and forms, visit www.lghvac.com.

For continual product development, LG Electronics U.S.A., Inc. reserves the right to change specifications without notice.

TABLE OF CONTENTS

SAFETY PRECAUTIONS ....................................................................... 4

Unit Nomenclature ................................................................................. 8

GENERAL DATA ..................................................................................... 9

Base Rooftop DOAS ............................................................................ 9

Energy Recovery Wheel Rooftop DOAS ............................................11

Refrigerant Safety ................................................................................ 13

Receiving Guidelines .......................................................................... 14

Inspection and Maintenance .............................................................. 15

Subassemblies .................................................................................... 17

Installation ............................................................................................ 19

Outdoor Air Hood Assembly .............................................................. 25

Piping Installation ................................................................................ 32

Electrical Information .......................................................................... 34

Control Center Components .............................................................. 35

Component Operation ......................................................................... 36

Optional Component Operation ......................................................... 37

Factory-Installed Refrigeration System Components ...................... 41

Start Up Unit ......................................................................................... 43

Start Up Checklist ................................................................................ 46

Indirect Gas Fired Furnaces ............................................................... 64

Typical Furnace, Electrical, and Control Components ....................... 69

Gas Fired Burner Turndown .............................................................. 70

Installation of Venting for Outdoor Units ............................................ 71

Installation of Venting for Indoor Units ............................................... 72

Venting Methods ................................................................................ 73

Standard Indoor Venting Installation .................................................. 74

Concentric Venting Installation .......................................................... 75

Two Pipe Venting Installation - Horizontal ......................................... 78

Two Pipe Venting Installation - Vertical .............................................. 79

Sequence of Operation ...................................................................... 82

Performance Data ............................................................................. 83

Furnace Start Up ............................................................................... 84

Troubleshooting - Ignition Controller .................................................. 87

Troubleshooting - 4:1 Modulating Furnace ........................................ 89

Troubleshooting - 4:1 or High Turndown Modulating Furnace 94

Reference - Controls ......................................................................... 98

Maintenance ...................................................................................... 99

Maintenance Log ............................................................................. 100

CONTROLLER .................................................................................... 102

Overview .......................................................................................... 102

AC Smart Setup ................................................................................114

Sequences of Operation ...................................................................117

Set-Points Data Tables .................................................................... 129

Network Settings Data Tables .......................................................... 136

Alarm Data ....................................................................................... 141

BACnet and MODBUS Points ......................................................... 145

Unit Status Modes ........................................................................... 157

LonTalk Points ................................................................................. 158

Start Up Components .......................................................................... 47

Optional Energy Wheel ....................................................................... 50

Troubleshooting - Alarms ................................................................... 53

Troubleshooting - Unit ........................................................................ 54

Troubleshooting - Refrigeration Circuit ............................................ 55

Routine Maintenance .......................................................................... 59

Reference - Venting Connection Locations ...................................... 62

AHRI Rating Conditions ...................................................................... 63

Due to our policy of continuous product innovation, some specifications may change without notification.

WARNING

DANGER

WARNING

CAUTION

SAFETY PRECAUTIONS

The instructions below must be followed to prevent product malfunction, property damage, injury or death to the user or other people. Incorrect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the symbols below.

TABLE OF SYMBOLS

This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

This symbol indicates situations that may result in equipment or property damage accidents only.

This symbol indicates an action that should not be performed.

INSTALLATION

Don’t use or store ammable gas or combustibles near the unit.

There is risk of re, explosion, and physical injury or death.

Do not install or remove the unit by yourself (end-user). Ask the dealer or an LG trained technician to install the unit.

Improper installation by the user may result in water leakage, re, explosion, electric shock, physical injury or death.

Installation, startup, and service must be performed by a

qualied installer, service agency, or gas supplier.

Improper installation, adjustment, service, maintenance, or alteration can cause personal injury or loss of life.

For replacement of an installed unit, always contact a trained service provider.

There is risk of re, electric shock, explosion, and physical injury or

death.

Rooftop Dedicated Outdoor Air System Installation Manual

Periodically check that the unit is not damaged.

There is risk of explosion, physical injury, or death.

Replace all control box and panel covers.

If cover panels are not installed securely, dust, water and animals may

enter the unit, causing re, electric shock, and physical injury or death.

Always check for system refrigerant leaks after the unit has been installed or serviced.

Exposure to high concentration levels of refrigerant gas may lead to illness or death.

Do not install the unit using defective hanging, attaching, or mounting hardware.

There is risk of physical injury or death.

Wear protective gloves when handling equipment.

Sharp edges may cause personal injury.

Dispose of the packing materials safely.

• Packing materials, such as nails and other metal or wooden parts may cause puncture wounds or other injuries.

• Tear apart and throw away plastic packaging bags so that children may not play with them and risk suffocation and death.

Do not install the unit in any location exposed to open ame or extreme heat. Do not touch the unit with wet hands.

There is risk of re, electric shock, explosion, and physical injury or

death.

Install the unit considering the potential for earthquakes.

Improper installation may cause the unit to fall, resulting in physical injury or death.

Do not change the settings of the protection devices.

If the pressure switch, thermal switch, or other protection device is shorted and forced to operate improperly, or parts other than those spec-

ied by LG are used, there is risk of re, electric shock, explosion, and

physical injury or death.

If the unit is installed in a small space, take measures to prevent the refrigerant concentration from exceeding safety limits in the event of a refrigerant leak.

Consult the latest edition of ASHRAE (American Society of Heating, Refrigerating, and Air Conditioning Engineers) Standard 15. If the refrigerant leaks and safety limits are exceeded, it could result in personal injuries or death from oxygen depletion.

Due to our policy of continuous product innovation, some specifications may change without notification.

CAUTION

SAFETY PRECAUTIONS

INSTALLATION – CONTINUED

Be very careful when transporting the product.

• Do not attempt to carry the product without assistance.

• Unit must be lifted by all lifting lugs provided at top of unit.

• Spreader bars are required to prevent damage to the cabinet, failure to do so can result in damage that is the installer’s responsibility.

• Failure to follow these directions may result in minor or moderate physical injury.

Installation, startup, and service must be performed by a

qualied installer, service agency, or gas supplier.

Improper installation, adjustment, service, maintenance, or alteration can cause property damage.

Properly insulate all cold surfaces to prevent “sweating.”

Cold surfaces such as uninsulated pipe can generate condensate that

may drip and cause a slippery oor condition and/or water damage to

walls.

Do not use the product for special purposes such as preserving foods, works of art, wine coolers, or other precision air conditioning applications.

There is risk of property damage.

Do not make refrigerant substitutions. Use R410A only.

If a different refrigerant is used, or air mixes with original refrigerant, the unit will malfunction and become damaged.

Do not install the unit in a noise sensitive area.

Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or destroy R410A refrigerant according to applicable U.S. Environmental Protection Agency (EPA) rules.

Install the unit in a safe location where no one can step on or fall onto it.

There is risk of unit and property damage.

Install the drain trap to ensure adequate drainage.

There is a risk of water leakage and property damage.

Don’t store or use ammable gas / combustibles near the

unit.

There is risk of product failure.

Always check for system refrigerant leaks after the unit has been installed or serviced.

Low refrigerant levels may cause product failure.

Ductwork and other installed airow restriction devices such as lters shall not exceed the rated maximum static pressure

limits of the DOAS fan assembly.

Doing so may cause product malfunction.

Safety Precautions

Due to our policy of continuous product innovation, some specifications may change without notification.

DANGER

WARNING

SAFETY PRECAUTIONS

WIRING

High voltage electricity is required to operate this system. Adhere to the National Electrical Codes and these instructions when wiring.

Improper connections and inadequate grounding can cause accidental injury or death.

Always ground the unit following local, state, and National Electrical Codes.

The information contained in this manual is intended for use by an experienced, trained electrician familiar with the U.S. National Electric Code (NEC) who is equipped with the proper tools and test instruments.

Failure to carefully read and follow all instructions in this manual can result in injury or death.

Ensure the unit is connected to a dedicated power source that provides adequate power.

If the power source capacity is inadequate or the electric work is not

performed properly, it may result in re, electric shock, physical injury or

death.

Turn the power o󰀨 at the nearest disconnect before servicing

the equipment.

Electric shock can cause physical injury or death.

Properly size all circuit breakers or fuses.

There is risk of re, electric shock, explosion, physical injury or death.

Refer to local, state, and federal codes, and use power wires

of su󰀩cient current capacity and rating.

Wires that are too small may generate heat and cause a re and physical injury or death.

Secure all eld wiring connections with appropriate wire

strain relief.

Improperly securing wires will create undue stress on equipment power

lugs. Inadequate connections may generate heat, cause a re and

physical injury or death.

Properly tighten all power connections.

Loose wiring may overheat at connection points, causing a re, physical

injury or death.

Failure to carefully read and follow all instructions in this manual can result in equipment malfunction or property damage.

Rooftop Dedicated Outdoor Air System Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

OPERATION

DANGER

WARNING

CAUTION

SAFETY PRECAUTIONS

Do not provide power to or operate the unit if it is ooded

or submerged.

There is risk of re, electric shock, physical injury or death.

Use a dedicated power source for this product.

There is risk of re, electric shock, physical injury or death.

Do not allow water, dirt, or animals to enter the unit.

There is risk of re, electric shock, physical injury or death.

Do not touch refrigerant piping during or after operation.

It can cause burns or frostbite.

Do not operate the unit with the panel(s) or protective cover(s) removed; keep ngers and clothing away from moving parts.

The rotating, hot, cold, and high-voltage parts of the unit can cause physical injury or death.

Do not operate the disconnect switch with wet hands.

There is risk of re, electric shock, physical injury or death.

If refrigerant gas leaks out, ventilate the area before operating the unit.

If the unit is mounted in an enclosed, low-lying, or poorly ventilated area

and the system develops a refrigerant leak, it may cause re, electric

shock, explosion, physical injury or death.

Periodically check power cable and connection for damage.

Cable must be replaced by the manufacturer, its service agent, or similar

qualied persons in order to avoid physical injury and / or electric shock.

Securely attach the electrical cover to the unit.

Non-secured electrical covers can result in burns or electric shock due to dust or water in the service panel.

Ensure no power is connected to the unit other than as directed in this manual. Remove power from the unit before removing or servicing the unit.

There is risk of unit failure, re, electric shock, physical injury or death.

Safety Precautions

To avoid physical injury, use caution when cleaning or servicing the air conditioner.

Clean up the site after installation is nished, and check

that no metal scraps, screws, or bits of wiring have been left inside or surrounding the unit.

Do not use this equipment in mission critical or specialpurpose applications such as preserving foods, works of art, wine coolers or refrigeration.

Provide power to the compressor crankcase heaters at least twenty-four (24) hours before operation begins.

Starting operation with a cold compressor sump(s) may result in severe

Do not block the inlet or outlet.

Unit may malfunction.

Securely attach the electrical cover to the indoor unit.

Non-secured covers can result in re due to dust or water in the service

panel.

Periodically verify the equipment mounting hardware has not deteriorated.

If the base collapses, the unit could fall and cause property damage or

product failure. bearing damage to the compressor(s). Keep the power switch on during the operational season.

Do not allow water, dirt, or animals to enter the unit.

There is risk of unit failure.

Due to our policy of continuous product innovation, some specifications may change without notification.

UNIT NOMENCLATURE

Family

AR = Air-Source Packaged Rooftop Unit, R410A Refrigerant

Type

D = Dedicated Outdoor Air System (DOAS)

ERV Option

R = Base Unit

E = Energy Recovery Wheel

Chassis Size

12 = 112

22 = 212

D R 11 05

Cooling Capacity

05 = 5 Tons

07 = 7.5 Tons

10 = 10 Tons

12 = 12.5 Tons

15 = 15 Tons

Rooftop Dedicated Outdoor Air System Installation Manual

17 = 17.5 Tons

Series

A = First Series

20 = 20 Tons

25 = 25 Tons

30 = 30 Tons

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Base Rooftop DOAS

Table 1: Base Rooftop DOAS.

Model No. AR-DR12-05A AR-DR12-07A AR-DR12-10A AR-DR12-12A AR-DR12-15A

Design Airflow (CFM) 980 1500 1800 2250 2900 ESP (in. wg) 2 2 2 2 2 Entering Air Summer

DB / WB (°F) Entering Air Winter

DB (°F)

Cooling Performance

Coil LAT DB / WB (°F) 54.8/54.7 54.5/54.4 54.5/54 54.9/54.8 54.7/54.5 Unit LAT DB / WB (°F) 93.8 87.2 82.1 81.9 79.9 Total Cooling

Capacity (MBH) Sensible Cooling

Capacity (MBH) Hot Gas Reheat Coil

Capacity (MBH) Evaporator Coil

Depth(Rows) No. of Compressors 1 1 2 2 2

Compressor Type(s) Digital scroll Digital scroll

Heating

Fuel Natural Gas Natural Gas Natural Gas Natural Gas Natural Gas Capacity Input (MBH) 100 200 200 250 300 Capacity Output (MBH) 80 160 160 200 240 LAT (°F) 75.6 98.8 82.3 82.3 76.6 Turndown Type Modulating Modulating Modulating Modulating Modulating Turndown Ratio 4:1 4:1 4:1 4:1 4:1

Supply Fan Data

Fan Quantity 1 1 1 1 1 Wheel Diameter (in.) 14 14 14 14 18 Wheel Speed (RPM) 1809 1996 2133 2376 1716 Motor HP 1 1 1.5 1.5 3

Configuration

Outdoor Air Intake End End End End End Supply Air Discharge Bottom Bottom Bottom Bottom Bottom Weight (lbs.) 2253 2325 2384 2487 2646

Filtration

Hood None None None None None Supply 2" MERV 8 2" MERV 8 2" MERV 8 2" MERV 8 2" MERV 8

95/75 95/75 95/75 95/75 95/75

0 0 0 0 0

68.2 105.4 128.3 155.6 202.9

43.3 66.8 80.3 99.2 128.6

41.3 52.8 53.7 65.6 78.8

4 5 4 6 6

Digital scroll /

Standard scroll

Digital scroll /

Standard scroll

Digital scroll /

Standard scroll

Product Data

• Capacity data above will change if entering air temperatures, leaving air temperatures (LAT), or airflow rates are varied.

• Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or destroy R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F) under section 608 of CAA.

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Base Rooftop DOAS

Table 2: Base Rooftop DOAS.

Model No.

Design Airflow (CFM) 2900 3200 3700 4600 5100 ESP (in. wg) 3 3 3 3 3 Entering Air Summer

DB / WB (°F) Entering Air Winter

DB (°F)

Cooling Performance

Coil LAT DB / WB (°F) 54.8/54.6 54.7/54.5 54.3/54.2 54.6/54.4 54.6/54.3 Unit LAT DB / WB (°F) 84.7 83.4 82.3 82.3 81.9 Total Cooling

Capacity (MBH) Sensible Cooling

Capacity (MBH) Hot Gas Reheat Coil

Capacity (MBH) Evaporator Coil

Depth(Rows) No. of Compressors 2 2 2 2 2

Compressor Type(s)

Heating

Fuel Natural Gas Natural Gas Natural Gas Natural Gas Natural Gas Capacity Input (MBH) 300 400 400 500 500 Capacity Output (MBH) 240 320 320 400 400 LAT (°F) 76.6 92.6 80.1 80.5 72.6 Turndown Type Modulating Modulating Modulating Modulating Modulating Turndown Ratio 4:1 4:1 4:1 4:1 4:1

Supply Fan Data

Fan Quantity 1 1 1 1 1 Wheel Diameter (in.) 20 20 20 20 22 Wheel Speed (RPM) 1591 1622 1702 1671 1777 Motor HP 3 3 3 5 5

Configuration

Outdoor Air Intake End End End End End Supply Air Discharge Bottom Bottom Bottom Bottom Bottom Weight (lbs.) 3412 3487 3633 3697 3796

Rooftop Dedicated Outdoor Air System Installation Manual

Filtration

Hood None None None None None Supply 2" MERV 8 2" MERV 8 2" MERV 8 2" MERV 8 2" MERV 8

AR-DR22-15A AR-DR22-17A AR-DR22-20A AR-DR22-25A AR-DR22-30A

95/75 95/75 95/75 95/75 95/75

0 0 0 0 0

202.2 223.8 262.2 323.1 359.6

128.4 141.8 165.7 204.5 227

93.6 99.1 111. 9 137.6 150.8

5 5 6 6 6

Digital scroll /

Standard scroll

Digital scroll /

Standard scroll

Digital scroll /

Standard scroll

Digital scroll /

Standard scroll

Digital scroll /

Standard scroll

• Capacity data above will change if entering air temperatures, leaving air temperatures (LAT), or airflow rates are varied.

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Energy Recovery Wheel Rooftop DOAS

Table 3: Energy Recovery Wheel Rooftop DOAS.

Model No.

Design Airflow (CFM) 1700 2600 2950 3700 4150 ESP (in. wg) 2 2 2 2 2 Entering Air Summer DB / WB

(°F) Entering Air Winter DB (°F) 0 0 0 0 0

Cooling Performance

Coil EAT DB / WB (°F) 81.4/67.1 81.6/67.3 82.2/67.6 82.3/67.7 83/68.1 Coil LAT DB / WB (°F) 54.8/54.4 54.7/54.3 54.6/53.8 54.7/54.4 53.1/52.7 Unit LAT DB / WB (°F) 79.9 78.3 74.7 74.5 73.3 Total Cooling Capacity (MBH) 67 104 126.6 153.1 196.5 Sensible Cooling Capacity

(MBH) Hot Gas Reheat Coil Capacity

(MBH) Evaporator Coil Depth (Rows) 4 5 4 6 6 Number of Compressors 1 1 2 2 2

Compressor Type(s) Digital scroll Digital scroll

Heating

Fuel Natural Gas Natural Gas Natural Gas Natural Gas Natural Gas Capacity Input (MBH) 100 100 150 200 200 Capacity Output (MBH) 80 80 120 160 160 LAT (°F) 92.9 76.9 83.7 85.7 78.9 Turndown Type Modulating Modulating Modulating Modulating Modulating Turndown Ratio 4:1 4:1 4:1 4:1 4:1

Fan Data

Supply Fan Quantity 1 1 1 1 1 Supply Fan Wheel Diameter (in.) 14 18 14 18 18 Supply Fan Wheel Speed (RPM) 2316 1951 3089 2299 2462 Supply Fan Motor HP 1 3 5 5 7.5 Exhaust Fan Quantity 1 1 1 1 1 Exhaust Fan Wheel Diameter

(in.) Exhaust Fan Wheel Speed

(RPM) Exhaust Fan Motor HP 1 3 3 5 7.5

Configuration

Outdoor Air Intake End End End End End Supply Air Discharge Bottom Bottom Bottom Bottom Bottom Return Air Opening Bottom Bottom Bottom Bottom Bottom Weight (lbs.) 2997 3213 3239 3414 3557

Filtration

Hood none none none none none Supply 2" MERV8 2" MERV8 2" MERV8 2" MERV8 2" MERV8

AR-DE12-05A AR-DE12-07A AR-DE12-10A AR-DE12-12A AR-DE12-15A

95/75 95/75 95/75 95/75 95/75

49.6 76.7 89.6 112.1 136.3

46.1 66.1 64.1 79.2 90.7

Digital scroll /

standard scroll

14 18 18 18 18

2302 1725 1725 1750 1750

Digital scroll /

standard scroll

Digital scroll /

standard scroll

Product Data

• Capacity data above will change if entering air temperatures, leaving air temperatures (LAT), or airflow rates are varied.

• Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or destroy R410A refrigerant according to applicable

regulations (40 CFR Part 82, Subpart F) under section 608 of CAA.

Due to our policy of continuous product innovation, some specifications may change without notification.

GENERAL DATA

Energy Recovery Wheel Rooftop DOAS

Table 4: Energy Recovery Wheel Rooftop DOAS.

Model No. AR-DE22-15A AR-DE22-17A AR-DE22-20A AR-DE22-25A AR-DE22-30A

Design Airflow (CFM) 5000 5510 6300 6750 7450 ESP (in. wg) 2 2 2 2 2 Entering Air Summer DB / WB

(°F) Entering Air Winter DB (°F) 0 0 0 0 0

Cooling Performance

Coil EAT DB / WB (°F) 81.1/67 81.5/67.2 82.8/67.6 81.6/67.3 82.2/67.6 Coil LAT DB / WB (°F) 54.5/54.1 54.8/54.3 54.7/54.4 52.5/52.2 52.8/52.4 Unit LAT DB / WB (°F) 77.4 75.5 74.9 74.8 74.9 Total Cooling Capacity (MBH) 198.6 220.4 259.7 310.2 346.4 Sensible Cooling Capacity

(MBH) Hot Gas Reheat Coil Capacity

(MBH) Evaporator Coil Depth (Rows) 5 5 6 6 6 Number of Compressors 2 2 2 2 2

Compressor Type(s)

Heating

Fuel Natural Gas Natural Gas Natural Gas Natural Gas Natural Gas Capacity Input (MBH) 300 300 300 300 300 Capacity Output (MBH) 240 240 240 240 240 LAT (°F) 94.6 88.9 81.3 81.1 76.1 Turndown Type Modulating Modulating Modulating Modulating Modulating Turndown Ratio 4:1 4:1 4:1 4:1 4:1

Fan Data

Supply Fan Quantity 1 1 1 1 1 Supply Fan Wheel Diameter (in.) 20 20 20 20 22 Supply Fan Wheel Speed (RPM) 1986 2106 2305 2364 2049 Supply Fan Motor HP 7.5 7.5 10 10 10 Exhaust Fan Quantity 1 1 1 1 1 Exhaust Fan Wheel Diameter

(in.) Exhaust Fan Wheel Speed

(RPM) Exhaust Fan Motor HP 5 7.5 7.5 10 10

Rooftop Dedicated Outdoor Air System Installation Manual

Configuration

Outdoor Air Intake End End End End End Supply Air Discharge Bottom Bottom Bottom Bottom Bottom Return Air Opening Bottom Bottom Bottom Bottom Bottom Weight (lbs.) 4624 4731 4901 5028 5084

Filtration

Hood none none none none none Supply 2" MERV8 2" MERV8 2" MERV8 2" MERV8 2" MERV8

95/75 95/75 95/75 95/75 95/75

146.1 161.8 190.2 216 240.4

123.8 123 137.5 162.8 178.3

Digital scroll /

standard scroll

20 20 20 20 22

1750 1750 1750 1765 1765

Digital scroll /

standard scroll

Digital scroll /

standard scroll

Digital scroll /

standard scroll

Digital scroll /

standard scroll

• Capacity data above will change if entering air temperatures, leaving air temperatures (LAT), or airflow rates are varied.

• Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or destroy R410A refrigerant according to applicable

regulations (40 CFR Part 82, Subpart F) under section 608 of CAA.

Due to our policy of continuous product innovation, some specifications may change without notification.

REFRIGERANT SAFETY

WARNING

Installation, startup, and service must be performed by a qualied installer, service agency, or gas supplier.

Improper installation, adjustment, service, maintenance, or alteration can cause personal injury or loss of life.

Installation, startup, and service must be performed by a qualied installer, service agency, or gas supplier.

Improper installation, adjustment, service, maintenance, or alteration can cause property damage.

The customer must provide proper equipment and fully trained installers to follow local safety requirements when receiving, installing, or servicing equipment. Consult all local building, electrical, occupational safety, and gas codes.

Lock out all power supplies before servicing the unit to prevent accidental startup. All fan blades should be secured to prevent wind rotation. Remove any restrictive device before restoring power.

The Clean Air Act of 1990 bans the intentional venting of refrigerant (CFC and HCFC) as of July 1, 1992. Approved methods of recovery, recycling, or reclaiming refrigerant must be followed. Fines and / or incarceration may be levied for non-compliance.

ASHRAE Standards 15-2101 and 34-2010 offer guidelines that address refrigerant safety and the maximum allowable concentration of refrigerant in an occupied space. Refrigerant will dissipate into the atmosphere, but a certain volume of air is required for this to occur safely. For R410A refrigerant, the maximum allowable concentration of refrigerant is twenty-six (26) lbs. per 1,000 cubic feet of an occupied space. Institutional buildings allow half of that concentration.

Product Data

ASHRAE Standards 15 and 34 assume that if a system develops a leak, its entire refrigerant charge will dump into the area where the leak occurs. To meet ASHRAE Standards 15 and 34, calculate the refrigerant concentration that may occur in the smallest room volume on the system, and compare the results to the maximum allowable concentration number. Also, consult state and local codes in regards to refrigerant safety.

Verify the maximum refrigerant concentration level for spaces served by DOAS meets the concentration limit for the application.

Due to our policy of continuous product innovation, some specifications may change without notification.

RECEIVING GUIDELINES

Receiving Guidelines

This product may have been subject to road salt during transit. If so, immediately wash off all visible white residue from all exterior surfaces. Upon receiving the product, check to ensure all line items are accounted for by referencing the delivery receipt or packing list.

Inspect each crate or carton for shipping damage before accepting delivery.

Alert the carrier if any damage is detected, do not refuse shipment.

The customer shall make notation of damage (or shortage of items) on the delivery receipt and all copies of the bill of lading which should be countersigned by the delivering carrier. If damaged, immediately contact your manufacturer’s representative. Any physical damage to the unit after acceptance is not the responsibility of the manufacturer.

Handling Guidelines

Units are to be rigged and moved by the lifting brackets provided or by the skid when a forklift is used. Location of brackets varies by model and size.

Handle in such a manner as to keep from scratching or chipping the coating. Damaged ﬁnish may reduce ability of unit to resist corrosion.

Unpacking Guidelines

Verify that all required parts and the correct quantity of each item have been received. If any items are missing, report shortages to your local representative to arrange for obtaining missing parts. Sometimes it is not possible that all items for the unit be shipped together due to availability of transportation and truck space.

Conﬁrmation of shipment(s) must be limited to only items on the bill of lading.

Check control cabinet for eld mounted sensors shipped loose.

Storage Guidelines

Units are protected against damage during shipment. If the unit cannot be installed and operated immediately, precautions need to be taken to prevent deterioration of the unit during storage. The user assumes responsibility of the unit and accessories while in storage. The manufacturer will not be responsible for damage during storage. These suggestions are provided solely as a convenience to the user.

The ideal environment for the storage of units and accessories is indoors, above grade, in a low humidity atmosphere which is sealed to prevent the entry of blowing dust, rain, or snow. Units designed for outdoor applications may be stored outdoors. All accessories must be stored indoors in a clean, dry atmosphere.

Indoor Maintenance Guidelines

Maintain temperatures evenly to prevent condensation. Remove any accumulations of dirt, water, ice, or snow and wipe dry before moving to indoor storage. To avoid condensation, allow cold parts to reach room temperature. Leave coverings loose to permit air circulation and to allow for periodic inspection.

Rooftop Dedicated Outdoor Air System Installation Manual

The unit should be stored at least 3½ in. (89 mm) off the ﬂoor. Clearance should be provided to permit air circulation and space for inspection.

Outdoor Placement Guidelines

The unit should be placed on a level surface to prevent water from leaking into the unit. The unit should be elevated so that it is above water and snow levels.

Ensure sufﬁcient support to prevent unit from settling into soft ground. Locate parts far enough apart to permit air circulation, sunlight, and

space for periodic inspection. To minimize water accumulation, place all unit parts on blocking supports so that rain water will run off.

Do not cover parts with plastic ﬁlm or tarps as these cause condensation of moisture from the air passing through heating and cooling

cycles.

Due to our policy of continuous product innovation, some specifications may change without notification.

WARNING

INSPECTION AND MAINTENANCE

Inspection and Maintenance

While in storage, inspect units once per month. Keep a record of inspection and maintenance performed.

If moisture or dirt accumulations are found on parts, the source should be located and eliminated. At each inspection, rotate the fan wheel

by hand ten to ﬁfteen revolutions to distribute lubricant on motor. If paint deterioration begins, consideration should be given to touch-up or

repainting. Units with special coatings may require special techniques for touch-up or repair.

Machined parts coated with rust preventive should be restored to good condition promptly if signs of rust occur. Immediately remove the original rust preventive coating with petroleum solvent and clean with lint-free cloths. Polish any remaining rust from surface with crocus cloth

or ﬁne emery paper and oil.

Do not destroy the continuity of the surfaces. Wipe thoroughly clean with Tectyl® 506 (Ashland Inc.) or the equivalent. For hard to reach

internal surfaces or for occasional use, consider using Tectyl® 511M Rust Preventive, WD-40® or the equivalent.

Removing from Storage

As units are removed from storage to be installed in their ﬁnal location, they should be protected and maintained in a similar fashion until the

equipment goes into operation.

Prior to installing the unit and system components, inspect the unit assembly to make sure it is in working order.

1. Check all fasteners, set screws on the fan, wheel, bearings, drive, motor base, and accessories for tightness.

2. Rotate the fan wheel(s) by hand and assure no parts are rubbing.

Installation

• Failure to follow proper instructions could result in serious injury or death.

• Use the appropriate crane equipment to transport each unit; ensure the crane is capable of supporting the weights listed in the specification tables. If the crane is not properly secured, it may result in an accident that causes physical injury or death.

• Never lift the units in windy conditions.

• Wear protective gloves when handling equipment. Sharp edges may cause personal injury.

• Tear apart and throw away plastic packaging so that children may not play with them and risk suffocation and death.

Failure to follow proper instructions could result in property damage.

Due to our policy of continuous product innovation, some specifications may change without notification.

INSPECTION AND MAINTENANCE

This is a horizontally conﬁgured High Percentage Outdoor Air unit designed for installation either indoors or outdoors. Each unit has multiple

options for cooling and/or heating. The unit is designed to replace air that is exhausted from the building and also heat and cool, as needed. The air volume produced by the unit is constant, but can be optionally modulated to provide a variable air volume (VAV) and recirculation is also offered as an option.

Cooling Options

Units have the following cooling options available:

• Packaged DX

• Split DX (thermal expansion valve is ﬁeld-provided)

• Chilled water coil

Units with packaged DX are shipped fully charged with refrigerant and are ready for operation upon arrival.

Heating Options

There are three different optional heat sources that can be ordered for this unit:

• Indirect gas-ﬁred furnace with one or two sets of heat exchangers

• Electric heat with inﬁnitely variable SCR control

• Hot water coil

Airow Arrangement

The unit is capable of Constant Air Volume (CAV), Variable Air Volume (VAV), 100% Outdoor Air and have recirculating air options.

Safety Listing

Models are listed per ANSI/UL 1995, Heating and Cooling Equipment and are ETL Certiﬁed.

Models and Capacities

Table 5: Energy Recovery Wheel Rooftop DOAS.

Model Cooling Capacity

AR-DR12-XX 5 to 15 tons AR-DR22-XX 15 to 30 tons AR-DE12-XX 5 to 15 tons AR-DE22-XX 15 to 30 tons

Rooftop Dedicated Outdoor Air System Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

SUBASSEMBLIES

Blower

Either one or two plenum-type fans. All units are equipped with a plenum fan for Supply Air and a second may be selected for Exhaust (Relief) Air.

Coils

• Evaporator coil (optional)

• Condenser coil (optional, packaged DX only)

• Water coil (optional)

• Reheat coil (optional)

Compressors

Each unit having packaged DX will have one or two refrigerant compressors. One of the compressors will be a digital scroll type compressor.

Dampers

Motorized intake air damper, motorized recirculating damper. Optional return air damper. Optional gravity-type exhaust damper.

Optional Barometric Relief Damper

Used during economizer mode of the unit when building pressure increases, relief damper will open due to over pressurization.

Electric Heater

An SCR controlled electric heater is available on the units. It requires a separate power supply and has its own control panel. See unit-

speciﬁc wiring diagram.

Installation

Filters

2-inch thick metal mesh ﬁlters in the outdoor weatherhood intake, 2-inch thick pleated paper MERV 8 (standard) or MERV 13 ﬁlters in the air stream. Optional 4-inch thick ﬁlter bank with a 2-inch thick MERV 8 and 2-inch thick MERV 13 or a 4-inch thick MERV 14 pleated paper supply ﬁlters.

Indirect Gas-Fired Furnace

Furnace model PVG is available on AR-DR12, AR-DE12, AR-DR22, and AR-DE22.

Packaged DX System

Any unit may be ordered with a packaged DX system. Housing size 112 will include either one or two compressors; housing size

212 will include two compressors; a condenser coil(s) and evaporator coil(s) and all required components. Units that have packaged DX are charged with R410A refrigerant. Do not use tools or parts designed for other refrigerants on these units.

Vestibule

Some units may be ordered with a factory- assembled vestibule that is to be ﬁeld-attached to the side of the unit. See lifting instructions.

Due to our policy of continuous product innovation, some specifications may change without notification.

SUBASSEMBLIES

Open view of Model AR-DE showing optional condenser coil, fans and energy recovery wheel.

Figure 1: DOAS AR-DE Model Open View

Rooftop Dedicated Outdoor Air System Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

Typical Unit Weights and Dimensions

Figure 2: DOAS AR-DE Model

INSTALLATION

Installation

All dimensions are shown in inches. Weight is shown in pounds and includes largest supply and exhaust fans, PDX with reheat, largest indi-

rect-gas ﬁred furnace, and all dampers. Actual weights will vary based on the unit conﬁguration.

* Only available with powered exhaust. **Only available without barometric relief.

+Only available with barometric relief. ‡ Length with side return.

Due to our policy of continuous product innovation, some specifications may change without notification.

INSTALLATION

Service Clearnces

Figure 3: DOAS AR-DE Model

Rooftop Dedicated Outdoor Air System Installation Manual

All dimensions are shown in inches. *No condensing section or piping vestibule, or unit has top condensing section.

Due to our policy of continuous product innovation, some specifications may change without notification.

INSTALLATION

WARNING

Additional Clearances for Packaged DX Units

Packaged DX units require additional clearance because they must have unrestricted air movement around the condenser coil and condenser fans. Hot air is being discharged from the condenser fans during operation. Enough clearance must be provided to avoid recirculation or coil starvation. When equipped with condenser coils, the unit should never be placed under an overhang or inside a building. A minimum of 48 inches above the condenser fans is acceptable, but unobstructed is strongly recommended.

End view of rooftop unit with Packaged DX

Figure 4: DOAS Packaged DX Unit: End view of rooftop unit

Handling Concerns for Units with Packaged DX

Units having packaged DX have a system that is pressurized with refrigerant and if it is damaged, the refrigerant could leak into the atmosphere or cause bodily harm due to the extreme cold nature of expanding refrigerant. Use protective equipment such as gloves and safety glasses to minimize or prevent injury in case of a system leak during installation.

Exposure to high concentration levels of refrigerant gas may lead to illness or death.

Before Lifting - Vestibule

Determine whether or not the unit has a vestibule that must be ﬁeld-attached to the side of the unit. Vestibules are shipped assembled but

detached from the unit.

They have lifting lugs on them so they can also be lifted by crane, but the installed location of the unit may make it preferable to install the vestibule on the unit prior to lifting.

Before Lifting - Field Power Access

Determine where high voltage and low voltage wiring is to be brought into the cabinet. If wiring is to be brought into the cabinet through the

ﬂoor, see Alternate Supply Entry Locations in this manual. If unit is to be installed on a roof, cut access openings in the roof deck as needed.

Installation

Due to our policy of continuous product innovation, some specifications may change without notification.

INSTALLATION

Lifting

1. Before lifting, ensure that all shipping materials have been removed from unit.

2. To assist in determining rigging requirements, weights are provided in the Unit Weights & Dimensions section of this manual.

3. Unit must be lifted by all lifting lugs provided at top of unit.

4. Spreader bars must span the unit to prevent damage to the cabinet by the lift cables.

5. Always test-lift the unit to check for proper balance and rigging before hoisting to desired location.

6. Never lift unit by weatherhood.

7. Never lift units in windy conditions.

8. Preparation of curb and roof openings should be completed prior to lifting unit to the roof.

9. Check to be sure that gasketing (supplied by others) has been applied to the top of the curb prior to lifting the unit and setting on the

curb.

10. Do not use fork lifts for handling unit.

Figure 5: DOAS Unit: Spreader Bar.

Spreader bars are required to prevent damage to the cabinet. Failure to follow proper instructions could result in property damage.

Rooftop Dedicated Outdoor Air System Installation Manual

Due to our policy of continuous product innovation, some specifications may change without notification.

INSTALLATION

Roof Curb Mounting

Roof curb details, including duct locations and dimensions, are to be found in the roof curb assembly instructions.

Rooftop units require curbs to be mounted ﬁrst. The duct connections must be located so they will be clear of structural members of the building.

Factory-Supplied Roof Curbs

Roof curbs are model GKD which are shipped in a knockdown kit (includes duct

adapters) and require ﬁeld assembly (by others). Assembly instructions are included

with the curb kit.

Install Curb

Locate curb over roof opening and fasten in place. Check that the diagonal dimensions are within ± 1/8 inch of each other and adjust as necessary. For proper coil drainage and unit operation, it is important that the installation be level. Shim the curb as required to level. Install gasketing on top surface of curb (provided by others).

Install Ductwork

Installation of all ducts should be done in accordance with SMACNA and AMCA guidelines. Duct adapters are provided to support ducts prior to setting the unit.

Set the Unit

Lift unit to a point directly above the curb and duct openings. Guide unit while lower-

ing to align with duct openings. Roof curbs ﬁt inside the unit base. Make sure the unit

is properly seated on the curb and level.

Install Vestibule

If unit was ordered with a vestibule and it has not yet been attached to the unit, caulk and attach the vestibule at this time.

Figure 6: Typical Unit with Condensing Section and Factory Supplied Curb Kit.

Installation

Figure 7: Typical Unit with Piping Vestibule and Factory Supplied Curb Kit.

Optional Piping Vestibule

If the unit was ordered with the vestibule, the NA (Non- Access side) clearance dimension must be measured from the vestibule.

Ductwork Configurations

Downblast Discharge Ductwork - whenever downblast discharge is used, the ductwork directly beneath the unit must be connected with either a “T” or an “L” con-

guration and the area directly beneath the heat source must not have any openings

such as louvers or grates.

Figure 8: Downblast Discharge Ductwork

Due to our policy of continuous product innovation, some specifications may change without notification.

INSTALLATION

WARNING

Rail Mounting and Layout

1. The units may be installed on rails provided and installed by others.

Ensure that rails are designed to handle the weight of the unit and provide proper load distribution on building supports.

2. Make sure that rail positioning does not interfere with the openings

on the unit.

3. Rails should run the width of the unit and extend beyond the unit a

minimum of 12 inches on each side.

4. Set unit on rails.

Recommended Electrical and Gas Supply Entry Locations

Manufacturer recommends that electrical service and gas supply be brought into the cabinet through the end wall, as shown below. There are three penetrations into the cabinet that are required; one for high voltage supply wiring, one for low voltage control wiring, and one for either gas supply or high voltage supply wiring for an electric heater.

Figure 10:

Recommended Gas and Electric Supply Entry Locations

Figure 9: Typical Unit Installed on Field Supplied Rails

Rooftop Dedicated Outdoor Air System Installation Manual

Alternate Supply Entry Locations

Each installation is unique and as a result, alternate entry locations may be ﬁeld-located. Before using

any alternate entry location, verify the suitability of the location and ensure the use of an alternate location does not interfere with unit wiring, components or functionality.

Never drill holes in the roof of the unit! There is high voltage wiring located between the inner and outer roof panels. Damage to the wiring could cause severe bodily harm or death.

Due to our policy of continuous product innovation, some specifications may change without notification.

OUTDOOR AIR HOOD ASSEMBLY

WARNING

Improper installation, adjustment, service, maintenance, or alteration can cause personal injury, or loss of life.

Installation, startup, and service must be performed by a qualied installer, service agency, or gas supplier.

Improper installation, adjustment, service, maintenance, or alteration can cause property damage.

Installation, startup, and service must be performed by a qualied installer, service agency, or gas supplier.

The customer must provide proper equipment and fully-trained installers to follow local safety requirements when receiving, installing, or servicing equipment. Consult all local building, electrical, occupational safety, and gas codes.

Lock out all power supplies before servicing the unit to prevent accidental startup. All fan blades should be secured to prevent wind rotation. Remove any restrictive device before restoring power.

The Clean Air Act of 1990 bans the intentional venting of refrigerant (CFC and HCFC) as of July 1, 1992. Approved methods of recovery, recycling, or reclaiming refrigerant must be followed. Fines and/or incarceration may be levied for non-compliance.

Outdoor Air Intake Hood

Each VPR, VPRC/P, VPRE, and VPRX series ventilator comes with a factory-supplied outdoor air intake hood that must be assembled prior to startup. The outdoor air intake hood is available in two options:

• Hood with optional 1” aluminum filters

• Standard hood with bird screen

The individual parts of the intake hood are located between the outdoor air intake damper and the intake hood top piece (item #6 for models 110/210/310; items #7 and #8 for models 350/352), which is secured flush with the end of the unit during shipment. The 1” aluminum filters are located in the intake compartment behind the outdoor air intake damper. The outdoor air intake end of the unit is opposite access to controls and compressors.

Tools Needed

• Power tool with 5/16”socket drive

• Phillips power bit # 2

• Sheet metal bending hand tool

Installation

Due to our policy of continuous product innovation, some specifications may change without notification.

OUTDOOR AIR HOOD ASSEMBLY

Part Number (Quantity)

Description

350 Casing ALL

352 Casing

ALUM FILTER-A

16x20x1 (2)

20x25x1 (2)

16x20x1 (8)

20x25x1 (8)

16x20x1 (8)

ALUM FILTER-B

N/A

16x25x1 (1)

N/A

20x25x1 (4)

HOOD END

5656

2502 (1)

2507 (1)

2512 (1)

2038 (1)

4619 (1)

HOOD TOP-A

5712

2500 (1)

2505 (1)

2510 (1)

N/A

HOOD TOP-B

N/A

2032 (1)

4612 (1)

HOOD TOP-C

N/A

2037 (1)

4616 (1)

RIGHT SIDE TRIANGLE

5713

1317 (1)

4087 (1)

8087 (1)

2033 (1)

4613 (1)

LEFT SIDE TRIANGLE

5714

1318 (1)

4088 (1)

8088 (1)

2034 (1)

4614 (1)

BOTTOM FLASHING

5728

1229 (1)

4297 (1)

8297 (1)

2039 (1)

4617 (1)

ALUM FILTER BOTTOM

N/A

4431 (1)

N/A

2308 (1)

4865 (1)

13A

ALUM FILTER RAIL

5727

1352 (2)

4429 (2)

8424 (3)

2309 (4)

13B

ALUM FILTER TOP RAIL

N/A

8436 (1)

N/A

ALUM FILTER SIDE SPACER

5726

1353 (2)

4430 (2)

8425 (4)

2310 (4)

2310 (2) & 4864 (4)

•

VPR-V10, VPR-110 & VPR-210 have only one row of aluminum filters.

The outdoor air hood on all VPRC/P units is located at the bottom of the unit.

Intake Hood with 1″ Aluminum Filters

Item #

V10 Casing 110 Casing 210 Casing 310 Casing

Rooftop Dedicated Outdoor Air System Installation Manual

•

VPR-352 and VPRX-352 have three rows of aluminum filters.

•

VPR-210, VPR-352, and VPRX-352 have two different filter sizes.

•

VPR-310 has a special aluminum filter rail top.

•

Due to our policy of continuous product innovation, some specifications may change without notification.

VPR/VPRX

OA Hood Assembly

Remove the shipping brackets used to secure the intake hood in transit. The brackets (shown below) are typically fabricated of galvanized steel and may be discarded. Retain the sheet-metal screws for use in assembling the OA hood.

OUTDOOR AIR HOOD ASSEMBLY

Install the LEFT SIDE TRIANGLE support (item #10) by aligning the pre-punched holes with the dimples inside the outdoor air intake sill. Fasten with 5/16″ hex-head screws. The flanged side of the triangle should be on the bottom of the hood and facing in to the center of the unit, as shown below.

Step 1: Location of shipping brackets.

Remove the row of screws holding the top of the hood to the unit. Set aside the top of the hood and the screws, which will be used in a later step.

Remove and discard the shipping foam or tape. Do not remove the adhesive-backed grey gaske

Step 3: Remove and discard shipping foam.

Remove and take inventory of parts

t from the unit.

shipped in the sill of the opening.

Remove the lug channel screw on each side of the unit if not already removed.

Step 6: Install left support triangle with flange facing in.

Install the RIGHT SIDE TRIANGLE support (item #9) the same way, with the flange on the bottom and facing in, as shown below.

Installation

Screw to remove

Step 5: Location of lug channel screws to remove.

Due to our policy of continuous product innovation, some specifications may change without notification.

Step 7: Install right support triangle with flange facing in.

Install the “S” rail bottom flashing (item #11) on the bottom of the intake sill as shown below. Align the pre-punched holes with the dimples provided on the top edge of the sill. Fasten with the provided 5/16″ hex-head screws.

OUTDOOR AIR HOOD ASSEMBLY

Step 8: Install bottom flashing.

Place the HOOD TOP (item #6) on top of the triangular side supports, as shown in the following figure. Fasten the top edge of the hood to the unit using the 5/16″ x 1.5″ screws removed previously from the shipping brackets.

CAUTION: Assistance is required to perform

this step for the larger hood on the 310/350/352 models.

11.

12.

Align the pre-punched holes in the HOOD END piece (item #3) with the leading edge of the hood top. Secure in place with the provided 5/16″ hex-head screws.

Step 11: Install the hood end by lining up the pre-punched holes.

Caulk the top and side seams where the hood meets the unit and at the ends of the flanges on both sides, as shown below.

Step 9: Install the hood top and fasten with screws.

10.

Attach the left and right edges of the top of the hood to the triangular supports using the provided 5/16″ hex-head screws.

Rooftop Dedicated Outdoor Air System Installation Manual

Step 10: Fasten the left and right triangles to the top.

Step 12: Caulk top and side seams.

For installation of bird screen, stop here and

proceed with assembly instructions on page 158.

13.

On items #12, #13A, and #13B, bend end tabs 90 degrees with sheet metal bending tool. Item #13B is on

ly shipped with the 310

casing.

BEND TAB

90°

Due to our policy of continuous product innovation, some specifications may change without notification.

OUTDOOR AIR HOOD ASSEMBLY

14.

15.

Attach the ALUM FILTER BOTTOM (item #12, if applicable) by aligning the bottom tab holes with the dimples on both triangles, as shown below. Fasten with the provided 5/16″ hex-head screws.

Step 14: Install aluminum filter bottom, if applicable.

For 110/210 casing:

Attach the top and bottom FILTER RAILS (item #13A) to the side HOOD TRIANGLES by aligning the ALUM FILTER RAIL tab

with dimples on both triangles. Fasten

holes with the provided 5/16″ hex-head screws.

Refer to both of the following figures.

For 310 casing:

Install item #13B as the top filter rail. Install one item #13A as the bottom filter rail.

16.

13A

Step 15b: Location of bottom filter rail, item #13A.

Install ALUM FILTERS (item #1A and 1B). Verify airflow arrow is facing into the unit.

Airflow

Direction

Installation

Step 16: Install filters with arrow pointing into the unit.

For 310/350/352 casing:

Install the additional #13A filter rails at the midpoint of the hood triangles. Align the filter rail tab holes with dimples on both triangles. The top middle rail should face up and the bottom middle rail should face down.

13A/B

Step 15a: Location of top filter rail, item #13A. This is item #13B o

n the 310 casing only.

17.

Fasten SIDE SPACERS (item #14) to bottom flange of both triangles to secure the filters.

Step 17: Install side spacers.

OA Hood assembly with filters is complete.

Due to our policy of continuous product innovation, some specifications may change without notification.

OUTDOOR AIR HOOD ASSEMBLY

Part Number (Quantity)

350 Casing ALL

VPRE/C/P

Description

SCREEN SIDE SUPPORT

5657

2501 (2)

2506 (2)

2511 (2)

2035 (2)

4615 (2)

HOOD END

5656

2502 (1)

2507 (1)

2512 (1)

2038 (1)

4619 (1)

SCREEN CENTER SUPPORT

N/A

2503 (1)

2508 (1)

2513 (1)

2036 (3)

4894 (3)

SCREEN SUPPORTFLASHING

N/A

2504 (1)

2509 (1)

2514 (1)

2498 (3)

4895 (3)

HOOD TOP-A

5712

2500 (1)

2505 (1)

2510 (1)

N/A

HOOD TOP-B

N/A

2032 (1)

4612 (1)

HOOD TOP-C

N/A

2037 (1)

4616 (1)

RIGHT SIDE TRIANGLE

5713

1317 (1)

4087 (1)

8087 (1)

2033 (1)

4613 (1)

LEFT SIDE TRIANGLE

5714

1318 (1)

4088 (1)

8088 (1)

2034 (1)

4614 (1)

BOTTOM FLASHING

5728

1229 (1)

4297 (1)

8297 (1)

2039 (1)

4617 (1)

FRAMED BIRD SCREEN

20.88x37.50

25.50x45.50

28.00x57.75 (1)

39.38x64.63 (1)

46.50x52.75 (2)

46.50x57.75 (2)

—

FRAMED BIRD SCREEN PART#

1016711

1009801 (1)

1009802 (1)

1009803 (1)

1009804 (2)

1015153 (2)

•

Item # 2 is shipped pre-installed to items #9 and #10 from the factory. The outdoor air hood on all VPRC/P units is located at the bottom of the unit.

Intake Hood with Bird Screen

Item #

V10 Casing

Rooftop Dedicated Outdoor Air System Installation Manual

•

Due to our policy of continuous product innovation, some specifications may change without notification.

110 Casing 210 Casing 310 Casing

352 Casing

VPR/VPRX

+ 130 hidden pages