RenewAire DN-Series Instruction manual

DN-Series DOAS Indoor
INSTALLATION, OPERATION & MAINTENANCE MANUAL
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FOR COMMERCIAL
APPLICATIONS
Model DN-2-JIN Shown

DN-Series DOAS Indoor
RENEWAIRE.COM INSTALLATION, OPERATION AND MAINTENANCE MANUAL 1.800.627.44992
IMPORTANT SAFETY INFORMATION
WARNING
ARC FLASH AND ELECTRIC SHOCK HAZARD
Arc flash and electric shock hazard. Disconnect all electric
power supplies, verify with a voltmeter that electric power is off
and wear protective equipment per NFPA 70E before working
within electric control enclosure. Failure to comply can cause
serious injury or death.
Customer must provide earth ground to unit, per NEC, CEC and
local codes, as applicable.
Before proceeding with installation, read all instructions,
verifying that all the parts are included and check the nameplate
to be sure the voltage matches available utility power.
The line side of the disconnect switch contains live high-voltage.
The only way to ensure that there is NO voltage inside the unit
is to install and open a remote disconnect switch and verify that
power is off with a volt meter. Refer to unit electrical schematic.
Follow all local codes.
CAUTION CAUTION
CAUTION
CAUTION CAUTION
CAUTION
RISK OF ELECTRIC SHOCK OR EQUIPMENT DAMAGE
Whenever electrical wiring is connected, disconnected or
changed, the power supply to the DOAS and its controls must
be disconnected. Lock and tag the disconnect switch or circuit
breaker to prevent accidental reconnection of electric power.
RISK OF ELECTRIC SHOCK
Optional VFDs use capacitors that will retain a high voltage
charge even after power is disconnected. After fans come to
a complete stop, wait for five minutes for the capacitors to
discharge themselves.
RISK OF CONTACT WITH HIGH SPEED MOVING PARTS.
Disconnect all local and remote power supplies, verify with
a voltmeter that electric power is off and all fan blades have
stopped rotating before working on the unit.
Do not operate this unit with any cabinet panels removed or
prior to assembly of the modules
RISK OF DAMAGE TO ENTHALPIC CORES
Whenever working within the DOAS cabinet, protect the
enthalpic cores from accidental damage. The core media is
subject to damage from dropped tools or other foreign objects.
RISK OF DAMAGE TO ENTHALPIC CORES
Low air flow can cause fouling of the enthalpic cores. The
DOAS must never be operated without clean filters in place and
minimum airflow must be greater than 250 CFM per full-sized
core.
RISK OF CONTACT WITH HOT SURFACES
The blower motor and other electrical components are extremely
hot during operation. Allow sufficient time for them to cool
before working within the unit cabinet. Use extreme caution and
wear protective gloves and arm protection when working on or
near hot blower motors and electrical components.
IMPORTANT
IMPORTANT IMPORTANT
This unit is intended for general ventilating only. Do not use to
exhaust hazardous or explosive materials and vapors. Do not
connect this equipment to range hoods, fume hoods or collection
systems for toxics.
This unit is for ventilating finished structures only. It is not to
be used until after all construction has been completed and
construction debris and dust are cleaned from the Occupied
Space.
This equipment is to be installed by following Industry Best
Practices and all applicable codes. Any damage to components,
assemblies, subassemblies or the cabinet which is caused by
improper installation practices will void the warranty.
IMPORTANT
Do not release refrigerant into the atmosphere! If required
service procedures include the adding or removal of refrigerant,
the service technician must comply with all federal, state and
local laws. The procedures discussed in this manual should only
be performed by a qualified, EPA Certified technician.

DN-Series DOAS Indoor
31.800.627.4499 INSTALLATION, OPERATION AND MAINTENANCE MANUAL RENEWAIRE.COM
DN DOAS UNIT INFORMATION
IMPORTANT USER INFORMATION
SAVE THIS MANUAL
NOTICE
This manual contains space for maintaining written records of unit maintenance and / or
repairs. See Section 12.0 Maintenance Records. At the time the DOAS is commissioned, a
maintenance schedule should be developed by the user to incorporate monthly and seasonal
maintenance and include start-up maintenance tasks as described in this manual.
In the unlikely event that factory assistance is ever required, information located on the unit label will
be needed.
Configuration (Option) Code
Unit Label (typical)
D - -- -N J --
The installing contrac-
tor is to fill in the unit
Configuration Code as
shown at left. When
installation is complete, the
manual is to be turned over
to the owner.

DN-Series DOAS Indoor
RENEWAIRE.COM INSTALLATION, OPERATION AND MAINTENANCE MANUAL 1.800.627.44994
TABLE OF CONTENTS
INSTALLATION, OPERATION & MAINTENANCE
MANUAL 1
DN DOAS UNIT INFORMATION 3
RENEWAIRE CONFIGURATION CODE 7
1.0 OVERVIEW 8
1.1 DESCRIPTION 8
1.1.2 Energy Recovery 8
1.1.2 Makeup Air 8
1.1.3 Heating 8
1.1.4 Cooling 8
1.1.5 Reheat 8
1.2 MODEL SIZES 8
1.3 AIRFLOWS 10
1.3.1 Airflow Inlet and Outlet Configurations 10
1.3.2 DOAS Internal Airflow Configuration 14
1.4 DAMPERS 16
1.5 HEATING 17
1.5.1 Gas Heater Module 17
1.5.2 Electric Heat 17
1.5.3 Water Coil / Steam Coil 17
1.6 COOLING 18
1.6.1 Split DX 18
1.6.2 Chilled Water Cooling 18
1.7 REHEAT 18
2.0 COMPONENT DESCRIPTION 19
2.1 CABINET CONSTRUCTION 19
2.1.1 Cabinet Paint 19
2.2 FAN MOTORS 19
2.3 FAN SPEED CONTROL 20
2.4 DAMPERS 20
2.5 ENTHALPIC CORE 20
2.6 FILTERS 20
2.6.1 Filter Monitors 20
2.7 GAS HEAT MODULE (OPTIONAL) 20
2.8 ELECTRIC HEATER MODULE (OPTIONAL) 20
2.9 SPLIT DX COOLING (OPTIONAL) 21
2.10 HOT GAS REHEAT (OPTIONAL) 21
2.11 CHILLED WATER COOLING (OPTIONAL) 21
2.12 HOT WATER / STEAM HEATING (OPTIONAL) 21
2.12 CONTROLS 22
2.12.1 Microprocessor Commercial Controls 22
2.13 OPTIONAL CONTROL ACCESSORIES 23
2.13.1 Carbon Dioxide Control 23
2.13.2 Digital Time Clock 23
2.13.3 Indoor Air Quality Sensor (IAQ) 23
2.13.4 Motion Occupancy Control 24
2.13.5 Smoke Detector 24
2.13.6 Optional Overflow Switch 24
2.14 COMPANION ACCESSORIES 24
2.14.1 Waterless Drain Traps 24
3.0 UNIT DRAWINGS 25
3.1 DOAS DN-2 DIMENSIONED DRAWING 25
3.2 DOAS DN-3 DIMENSIONED DRAWING 26
3.3 DOAS DN-5 DIMENSIONED DRAWING 27
3.4 DOAS DN-2 CORNER WEIGHTS 28
3.5 DOAS DN-3 CORNER WEIGHTS 28
3.5 DOAS DN-5 CORNER WEIGHTS 29
4.0 SHIPPING / RECEIVING / HANDLING 30
4.1 UNIT WEIGHTS / DIMENSIONS 30
4.1.1 Unit Dimensions and Weight 30
4.1.2 Shipping Dimensions and Weight 30
4.2 RECEIVING 31
4.3 RIGGING 31
4.4 HANDLING AND STORAGE 31
5.0 UNIT PLACEMENT 31
5.1 SOUND ATTENUATION OUTSIDE THE BUILDING 31
5.2 PLACEMENT CAUTIONS 31
5.3 SERVICE CLEARANCES 31
6.0 INSTALLATION 32
6.1 CURB ASSEMBLY AND PLACEMENT 32
6.2 UNIT PLACEMENT 32
6.3 HOOD INSTALLATION 32
6.4 DUCT CONNECTIONS 32
6.4.1 Indoor Sound Attenuation 32
6.5.1 Factory-Recommended Gas Service Entry 33
6.6 ELECTRICAL REQUIREMENTS 33
6.6.1 High Voltage Electrical Connections 33
6.6.2 Factory-Recommended Electric Service Entry 33
6.6.3 High Voltage Supply Circuits 34
6.6.4 Low Voltage Electrical Connections 35
6.6.5 Low Voltage Terminal Blocks 35
6.6.6 Low Voltage Terminal Blocks Layout 35
6.7 PIPING CONNECTIONS 36
6.7.1 Coil Connections 36
6.7.2 Gas Heater Connections 36
6.7.3 Drain Traps 37
6.7.4 Drain Trap Construction 39
6.7.5 Waterless Drain Traps 40
6.8 WIRING SCHEMATICS 42
6.8.1 Typical Input Power 42
6.8.2 Typical Control Wiring 45
6.8.3 Typical Field Wiring 46
6.9 CONTROL CONNECTIONS 47
7.0 CONTROL CONTRACTOR INFORMATION 47
7.1 24 VAC CLASS II POWER SUPPLY 47
7.2 POINTS LIST 48
7.3 EXTERNAL CONTROL CONNECTIONS 49
7.4 SEQUENCE OF OPERATION 49
8.0 PRE START-UP 50
8.1 VERIFY VOLTAGES 50
8.2 VERIFY TRANSFORMER WIRING 50
8.3 INSPECT FILTERS 50
8.7 INSPECT FANS 50
8.8 INSPECT AND CLEAN THE INTERIOR 50
8.9 INSPECT DUCTWORK CONNECTIONS 50
9.1 VERIFY CORRECT FAN ROTATION DIRECTION 50
9.2 BASIC OPERATIONAL CHECK 50
9.2.1 Current Switches 50

DN-Series DOAS Indoor
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10.0 MAINTENANCE 51
10.1 MAINTENANCE 24 HRS. AFTER START-UP 51
10.2 MAINTENANCE 30 DAYS AFTER START-UP 51
10.3 MAINTENANCE SCHEDULE 51
10.4 FILTERS 51
10.5 SERVICE PARTS 52
11.0 MAINTENANCE REFERENCE 53
11.1 CABINET MAINTENANCE 53
11.2 ELECTRIC MOTOR MAINTENANCE 54
11.2.1 Motor Cleanliness 54
11.2.2 VFDs (optional) 54
11.3 ENTHALPIC CORE MAINTENANCE 55
11.3.1 Removal of Enthalpic Cores 55
11.3.2 Reinstallation of Enthalpic Cores 55
11.4 FAN / MOTOR REMOVAL 56
11.5 COILS 58
11.5.1 Coil Maintenance / Removal 58
11.6 DOOR LATCH ADJUSTMENT 59
11.7 GAS HEAT MODULE MAINTENANCE 59
11.8ELECTRIC HEAT MODULE MAINTENANCE 59
11.9 WATER TREATMENT MAINTENANCE 60
11.10 CONDENSATE DRAIN MAINTENANCE 60
11.11 CURRENT SWITCHES 60
11.12 WINTERIZATION 60
11.13 DAMPER MAINTENANCE 61
11.14 FAN MAINTENANCE 61
11.15 TROUBLESHOOTING 61
11.16 Factory Assistance 61
12.0 MAINTENANCE RECORDS 62

DN-Series DOAS Indoor
RENEWAIRE.COM INSTALLATION, OPERATION AND MAINTENANCE MANUAL 1.800.627.44996
TABLE OF ILLUSTRATIONS
TABLE OF WIRING SCHEMATICS
Unit Label (typical) 3
DN DOAS Modules 9
DN DOAS with Alternate SA Fan Position 9
Plan View of Typical Airflow Through DN DOAS 15
Plan View of Bypass (Economizer) Airflow 15
Bypass Assy Viewed From Front 16
EA Fan with Damper (behind) 16
Face and Bypass Dampers 16
Recirculation Damper Inside Bypass Assembly 16
OA Damper and Actuator 16
Gas Heater Module (typical) 17
Electric Heater (typical) 17
DX Coil (typical) 18
Hot Gas Reheat Coil 18
EC Fan Assembly (typical) 19
Lifting Lug (typical) 19
Asynchronous Motor Fan Assembly (typical) 19
Enthalpic Core (typical) 20
Electric Heater (typical) 21
Water Coil (typical) 21
Electric Heater Control Panel (typical) 21
RenewAire Commercial Controller 22
Premium Commercial Controls Installed 22
RenewAire Commercial Controller Expansion Board 22
Carbon Dioxide Sensor, Wall Mount 23
Time Clock, Panel Mount 23
IAQ Sensor, Wall Mount 23
Time Clock, Exterior Enclosure 23
Carbon Dioxide Sensor, Duct Mount 23
IAQ Sensor, Duct Mount 23
Time Clock, Exterior, Open 23
Ceiling Mount Occupancy Sensor 24
Smoke Detector 24
Optional Overflow Switch 24
Wall Mount Occupancy Sensor 24
DOAS DN-2 Dimensions 25
DOAS DN-3 Dimensions 26
DOAS DN-5 Dimensions 27
DOAS DN-2 Approximate Corner Weights 28
DOAS DN-3 Approximate Corner Weights 28
DOAS DN-5 Approximate Corner Weights 29
Class I Damper (typ) 32
Duct Flange on Damper (typ) 32
Factory-Provided Electric Service Entry 33
Disconnect Switch (typ) 34
Low Voltage Terminal Blocks Installed 35
Low Voltage Terminal Blocks Layout 35
Drain Pan Connection 37
Condensate Drain Locations (typ) 37
Positive Pressure Drain Trap Construction 39
Typical Drain Trap Construction 39
Negative Pressure Drain Trap Construction 40
Type “P” Positive Pressure Waterless Trap 41
Type “N” Negative Pressure Waterless Trap 41
24 VAC Power Supply Transformer 47
Table: Clean Filter Pressure Drop (in. w.g.) 51
DOAS Service Parts 52
DN-2 Single Phase Power Wiring Schematic 42
DN-2, DN-3 Three Phase Power Wiring Schematic 43
DN-5 Three Phase Power Wiring Schematic 44
DN-2, DN-3, DN-5 Typical Control Wiring 45
DN-2, DN-3, DN-5 Typical Field Wiring 46
End View of Core Support Assembly 55
Single Phase EC Motor Wiring Connections 56
Fan and Motor Assembly 56
Three Phase EC Motor Wiring Connections 56
Door Latch Adjustment 59
Current Switch (typical) 60

DN-Series DOAS Indoor
71.800.627.4499 INSTALLATION, OPERATION AND MAINTENANCE MANUAL RENEWAIRE.COM
CONFIGURATION CODE FOR DN DOAS
RENEWAIRE CONFIGURATION CODE
MODEL NUMBER
Model
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
"DN-2-" = 1,650 CFM
"DN-3-" = 3,300 CFM
"DN-5-" = 4,950 CFM
DIGIT NUMBER
Digits 1-5:
Location (see Restriction 1)
Digits 7-8:
"IN" = Indoor
"RT" = Rooftop
Insulation
Digit 11:
SA Fan Location (See Restrictions 17 & 18)
Digit 9:
"B" = Before Coil (Standard)
"A" = After Coil
Phase (see Restriction 14)
Digit 12:
"1" = Single Phase
"3" = Three Phase
Voltage (see Restrictions 2 & 7)
Digit 13:
"3" = 208V
"4" = 460V
"5" = 230V
"8" = 575V
Cooling
Digit 16:
*NOTES:
Digits 3, 5, 14, 15, 22 & 23 are unused in this model.
Restrictions:
1: Location Code "RT" only available with Orientation Codes "H", "V", "R" & "F".
2: Voltage Code "4" & "8" only available with Phase Code "3".
3: Heating Code "P" only available and must be selected with Cooling Codes "H" or "P".
4: Heater Size Option only available with Heating Codes "E" & "G".
5: Fan Control Code "E" only available with Voltage Codes "3", "4" and "5".
6: Fan Control Code "V" only available with Phase Code "3".
7: Voltage Code "8" only available with Fan Control "V".
8: Heater Size Codes "8" and “9" are not available when Model Code is “DN-2-” and Heating Code is “E”.
9: Heater Size Codes "8" and "9" are not available when Model Code is “DN-3-” or "DN-5-" and Unit Voltage Code is “3” or “5” and Fan Control Code is “V” and Heating
Code is “E”.
10: Heater Size Code "9" is not available when Model Code is “DN-3-” or "DN-5-" and Unit Voltage Code is “3” or “5” and Fan Control Code is “E” and Heating Code is “E”.
11: Heater Size Code "7" is not available when Model Code is “DN-5-” and Unit Voltage Code is “3” or “5” and Fan Control Code is “V” and Heating Code is “E”.
12: Heater Size Codes "5", “6”, and “7” are not available when Model Code is “DN-2-” and Heating Code is “G”.
13: Heater Size Codes “8” and “9” are not available when Model Code is “DN-2-” or “DN-3-” and Heating Code is “G”.
14: Phase Code "1" only available with Model Code "DN-2-".
15: Heating Code "E" not available with Phase Code "1".
16: Some units with Customization Code "X" are not Safety Listed.
17: SA Fan Location Code "A" is not available when no coils are selected.
18: SA Fan Location Code "B" is not available when only coils are selected for Heating and Cooling and Orientation Codes are "B", "D", "F", "J", "K", "N", "P" or "V".
-
"1" = 1 inch
"2" = 2 inch with Thermal Break
Orientation
Digit 10:
"A", "B", "C", "D", "E", "F", "G", "H", "J", "K", "L", "M", "N", "P", "R", "V"
Heater Size (see Restrictions 4, 8, 9, 10, 11, 12 & 13)
Digit 18:
"-" = None
"1" = Gas 50 MBH or Electric 5kW
"2" = Gas 75 MBH or Electric 10kW
"3" = Gas 100 MBH or Electric 15kW
"4" = Gas 125 MBH or Electric 20kW
"5" = Gas 150 MBH or Electric 25kW
"6" = Gas 200 MBH or Electric 30kW
"7" = Gas 250 MBH or Electric 40kW
"8" = Gas 300 MBH or Electric 50kW
"9" = Gas 350 MBH or Electric 60kW
"-" = None
"C" = Chilled Water
"D" = Direct Expansion
"H" = Heat Pump
"P" = Heat Pump + Hot Gas Reheat (HGRH)
"R" = Direct Expansion + Hot Gas Reheat (HGRH)
Exchanger Type
Digit 6:
"J" = G5 Core
Heating (see Restrictions 3 & 15)
Digit 17:
"-" = None
"E" = Electric Heater
"G" = Gas Heat Module
"P" = Heat Pump
"S" = Steam
"H" = Hot Water
Fan Control (see Restrictions 5 & 6)
Digit 19:
"E" = ECM
"V" = VFD
Unit Fusing
Digit 20:
"N" = Non-Fused (Standard)
"F" = Fused
BacNet Factory Activation
Digit 21:
"2" = No
"4" = Yes
Customization
Digit 24:
"-" = None
"P" = Standard Paint, No Customization
"X" = Custom Unit, No Paint
"Z" = Custom Unit and Paint
Safety Listing (see Restriction 16)
Digit 25:
"L" = Listed
"N" = Non-Listed
-- -- -J
DN-Series Configuration Code Chart

DN-Series DOAS Indoor
RENEWAIRE.COM INSTALLATION, OPERATION AND MAINTENANCE MANUAL 1.800.627.44998
OVERVIEW
NOTE: This unit is a
Dedicated Outdoor Air
System, or DOAS. It is
commonly referred to
throughout this manual as a
DOAS. This manual is specif-
ically for the indoor version,
as indicated by digits 7 & 8
of the configuration code,
“IN”.
There is also an outdoor
version of this DOAS, as in-
dicated by digits 7 & 8 of the
configuration code, “RT”.
The outdoor version of the
DOAS has a separate man-
ual.
1.0 OVERVIEW
1.1 DESCRIPTION
1.1.2 Makeup Air
1.1.2 Energy Recovery
1.1.3 Heating
1.1.4 Cooling
1.1.5 Reheat
1.2 MODEL SIZES
This unit is an indoor Dedicated Outdoor Air System (DOAS) that provides makeup air that is optionally
heated, cooled and dehumidified to a conditioned space. The air that is drawn through the unit also
goes through enthalpic cores to recover energy from exhaust air. It may be configured with internal
heating and/or cooling hardware or it may be connected to external hardware such as a chilled water
system or a heat pump or a steam source. It has two dedicated variable speed plenum fans and a
sophisticated on-board electronic control package that offers many different control options. The
DOAS is available in three different sizes and may be ordered in either an indoor or a rooftop (outdoor)
version.
Each unit is constructed in the form of modules, with each module performing a dedicated function.
Each module has configurable options that can be selected by the user. See the illustrations on
following page.
The indoor DOAS is available in three different sizes:
Model DN-2: 1,650 cfm (small cabinet size)
Model DN-3: 3,300 cfm (medium cabinet size)
Model DN-5: 4,950 cfm (large cabinet size)
Makeup air is air that is needed by the Occupied Space to replace air that is otherwise lost or exhausted
from the building. In some cases, air is being drawn from the building by the air handler itself, in the
form of Return Air. The Premium Controls package supplied with each unit senses variations in air
pressures and causes the unit to deliver the makeup air as needed. Makeup air is generally conditioned
by either heating or cooling the air before it is delivered to the Occupied Space.
Heating options include:
Integral indirect gas-fired heat module, either natural gas or propane
Integral electric heater
Integral hot water coil, for connection to an external hot water source (by others)
Integral coil for connection to an external heat pump (by others)
Integral coil for steam heat (steam by others)
Cooling options include:
Integral DX coil, for connection to an external compressor (by others)
Integral chilled water coil, for connection to an external chilled water source (by others)
Intetgral water coil for connection to an external heat pump (by others)
Energy recovery is accomplished by means of integral 5th generation static plate enthalpic cores. Stale
air that is being exhausted from the Occupied Space passes through the enthalpic cores where both
sensible and latent energy are recovered into the Supply Air airstream.
Reheat is accomplished by means of an optional Hot Gas Reheat coil (HGRH). The HGRH coil is installed
within the unit and is to be connected to an external compressorized refrigerant system, furnished by
others.
IMPORTANT
This DOAS will optionally contain chilled water coils, steam coils, hot water coils and DX coils,
all of which are to be connected to owner-provided equipment. The DOAS does not include DX
compressors. The DOAS will provide low-voltage digital and analog signals to call for operation and
modulation of the owner-provided equipment. No refrigerant control valve (TXV) is provided and
must be specified by the engineer of the overall system for separate sourcing.

DN-Series DOAS Indoor
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OVERVIEW
DN DOAS Modules
DN DOAS with Alternate SA Fan Position
ENERGY RECOVERY
MODULE
EA FAN MODULE
COIL MODULE
DX Coil, HGRH
Shown
(may be moved
before fan)
HEAT MODULE
(gas heater
Shown)
SA FAN MODULE
(shown in fan-be-
fore-coil position)
Bypass and Filter
Assys Shown
CONTROLS
MODULE
SA Fan Module
(shown in fan-af-
ter-coil position)

DN-Series DOAS Indoor
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OVERVIEW
1.3 AIRFLOWS
The DOAS has many configurations available for airflow inlet and/or outlet. The customer is to select
each individual airstream location and then apply all four locations to the matrix at right, selecting the
one example that fits all criteria. The identifying letter beneath each figure is shown on the configura-
tion code. See configuration code digit 10.
1.3.1 Airflow Inlet and Outlet Configurations
EA
SA RA
OA
1
1
1
1
22
2
2
Discharge Vertically
(through unit roof)
Discharge Vertically
(through unit floor)
Intake Vertically
(through unit floor)
Discharge Horizontally
(through unit side wall)
Discharge Horizontally
(through unit end wall)
Intake Horizontally
(through unit end wall)
Intake Vertically
(through unit roof)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
KEY TO AIRFLOW CODES
OA
SA
RA
EA
Outside Air Into Unit
Supply Air Into Occupied Space
Room Air Into Unit
Exhaust Air Leaving Unit
IMPORTANT
It is important to understand and use the equipment airstream terminology as it is used in this manual. The airstreams are defined as:
• OUTSIDE AIR (OA): Air taken from the external atmosphere and, therefore, not previously circulated through the system. Each DOAS
has an OA air inlet, optionally located on either the roof or the end wall.
• FRESH AIR (FA): Air that is ready for conditioning. In some cases, FA is a blend of OA and RA, which is then conditioned and
becomes SA.
• SUPPLY AIR (SA): Conditioned air that is supplied to an occupied space. Each DOAS has an SA outlet that may deliver either
conditioned supply air or fresh air. The Supply Air outlet is optionally located on either the end wall or the floor.
• RETURN AIR (RA): Air that is returned to a heating or cooling appliance from a conditioned space. When the DOAS operates in
recirculation mode, RA is conditioned and returned to the occupied space in the form of SA. Each DOAS has an RA inlet, optionally
located on either the floor or the end wall of the unit.
• EXHAUST AIR (EA): Air that is removed from a heating or cooling appliance and discharged. Each DOAS has an EA outlet with a
damper. The Exhaust Air outlet is optionally installed on either the side wall or the roof of the unit.

DN-Series DOAS Indoor
111.800.627.4499 INSTALLATION, OPERATION AND MAINTENANCE MANUAL RENEWAIRE.COM
OVERVIEW
KEY TO CONFIGURATION CODES
OA
2
2
2
1
1
1
1
1
2
2
2
1
1
1
2
2
SA
1
2
1
1
2
1
2
1
2
1
2
2
1
2
1
2
RA
1
2
2
2
1
1
2
2
1
1
2
1
1
2
2
1
EA
1
1
2
1
2
1
1
2
1
2
2
1
2
2
1
2
CODE
A
D
M
R
J
H
V
L
B
G
P
F
E
N
C
K
EA
SA RA
OA
1
1
1
1
Discharge Horizontally
(through unit side wall)
Discharge Horizontally
(through unit end wall)
Intake Horizontally
(through unit end wall)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
H
EA
SA RA
OA
1
1
1
2
Discharge Horizontally
(through unit side wall)
Discharge Horizontally
(through unit end wall)
Intake Vertically
(through unit roof)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
A
EA
SA RA
OA
1
1
1
2
Discharge Vertically
(through unit floor)
Discharge Horizontally
(through unit side wall)
Intake Horizontally
(through unit end wall)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
F
EA
SA RA
OA
1
1
2
2
Discharge Vertically
(through unit floor)
Discharge Horizontally
(through unit side wall)
Intake Vertically
(through unit roof)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
B

DN-Series DOAS Indoor
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OVERVIEW
EA
SA RA
OA
1
1
1
2
Intake Vertically
(through unit floor)
Discharge Horizontally
(through unit side wall)
Discharge Horizontally
(through unit end wall)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
R
EA
SA RA
OA
1
1
1
2Discharge Vertically
(through unit roof)
Discharge Horizontally
(through unit end wall)
Intake Horizontally
(through unit end wall)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
E
EA
SA RA
OA
1
1
2
2
Intake Vertically
(through unit floor)
Discharge Horizontally
(through unit side wall)
Discharge Horizontally
(through unit end wall)
Intake Vertically
(through unit roof)
EA Fan
SA Fan
C
EA
SA RA
OA
1
1
22
Discharge Vertically
(through unit roof)
Discharge Horizontally
(through unit end wall)
Intake Vertically
(through unit roof)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
G
EA
SA RA
OA
1
1
2
2
Discharge Vertically
(through unit floor)
Intake Vertically
(through unit floor)
Discharge Horizontally
(through unit side wall)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
V
EA
SA RA
OA
1
2
2
2
Discharge Vertically
(through unit floor)
Intake Vertically
(through unit floor)
Discharge Horizontally
(through unit side wall)
Intake Vertically
(through unit roof)
EA Fan
SA Fan
D

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OVERVIEW
EA
SA RA
OA
1
1
2
2
Discharge Vertically
(through unit roof)
Intake Vertically
(through unit floor)
Discharge Horizontally
(through unit end wall)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
L
EA
SA RA
OA
1
22
2
Discharge Vertically
(through unit roof)
Intake Vertically
(through unit floor)
Discharge Horizontally
(through unit end wall)
Intake Horizontally
(through unit end wall)
Intake Vertically
(through unit roof)
EA Fan
SA Fan
M
EA
SA RA
OA
1
1
2
2
Discharge Vertically
(through unit roof)
Discharge Vertically
(through unit floor)
Intake Horizontally
(through unit end wall)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
J
EA
SA RA
OA
1
2
2
2
Discharge Vertically
(through unit roof)
Discharge Vertically
(through unit floor)
Intake Vertically
(through unit floor)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
N
EA
SA RA
OA
1
22
2
Discharge Vertically
(through unit roof)
Discharge Vertically
(through unit floor)
Intake Vertically
(through unit roof)
Intake Horizontally
(through unit end wall)
EA Fan
SA Fan
K
EA
SA RA
OA
22
2
2
Discharge Vertically
(through unit roof)
Discharge Vertically
(through unit floor)
Intake Vertically
(through unit floor)
Intake Vertically
(through unit roof)
EA Fan
SA Fan
P

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OVERVIEW
An economizer (bypass) mode is available on all DOAS units. Bypass mode is activated when the
Outside Air enthalpy is less than the Return Air enthalpy and free cooling is desired. When the DOAS
enters economizer mode, the bypass damper opens and the face damper closes, causing the outdoor
air stream to bypass the energy recovery cores. Bypass mode is used only for economizer. Outside Air
bypasses the enthalpic cores. The face and bypass dampers are modulated for no or limited energy
recovery. See illustrations on following page.
A recirculation mode is optionally available on all DOAS units. Recirculation is used only at night during
the Unoccupied Mode. It takes Return Air and bypasses the enthalpic cores and then adds cooling or
heat to the air stream. Recirculation mode is enabled by going to the Schedule section of the controller
menu (Main Menu / Settings / Scheduler) and setting a schedule and set points.
To accomplish recirculation, a damper is installed in the bypass assembly of the unit. See damper
illustration Recirculation Damper Inside Bypass Assembly on page 16.
1.3.2 DOAS Internal Airflow Configuration
Within the DOAS, airstreams can be redirected as a result of changes in the bypass or recirculation
dampers. In normal operation, typical airflow is through the enthalpic cores and then through the fan
module. If the bypass function is activated, the FA airstream is redirected through the bypass assem-
bly instead of through the cores. If the optional recirculation function is activated, the recirculation
damper is opened and the airstream again bypasses the enthalpic cores.

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OVERVIEW
Plan View of Bypass (Economizer) Airflow
Plan View of Typical Airflow Through DN DOAS
Energy Recovery
Module
Fan
Module
Cooling/
Controls
Module
Heat
Module
Bypass
Damper
(closed)
Face
Damper
(open)
Energy
Recovery
Cores
Bypass (Economizer)/
Recirculation Assembly
Energy Recovery
Module
Fan
Module
Cooling/
Controls
Module
Heat
Module
Bypass
Damper
(open)
Face
Damper
(closed)
Energy
Recovery
Cores
Bypass (Economizer)/
Recirculation Assembly
TYPICAL OF SMALL AND MEDIUM CABINETS
PLAN VIEW
Energy Recovery
Module
Fan
Module
Cooling/
Controls
Module
Heat
Module
Bypass
Damper
(closed)
Face
Damper
(open)
Energy
Recovery
Cores
Bypass (Economizer)/
Recirculation Assembly
Energy Recovery
Module
Fan
Module
Cooling/
Controls
Module
Heat
Module
Bypass
Damper
(open)
Face
Damper
(closed)
Energy
Recovery
Cores
Bypass (Economizer)/
Recirculation Assembly
TYPICAL OF SMALL AND MEDIUM CABINETS
PLAN VIEW
Plan View, Typical of DN-2 and DN-3 Models
Plan View, Typical of DN-2 and DN-3 Models

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OVERVIEW
1.4 DAMPERS
Class I airfoil dampers are standard on all units. OA, EA, face and bypass dampers come as standard
and a recirculation damper is optional.
All dampers are operated by 24 VAC electric actuators. The actuators are mounted on the inside of the
unit. The actuators are controlled by the on-board Premium Controls system. The OA and EA dampers
are powered open, spring return close. The bypass damper actuator is modulating.
OA Damper and ActuatorEA Fan with Damper (behind)
Face and Bypass Dampers
Recirculation Damper Inside Bypass Assembly
Face Damper
Bypass Damper
Bypass Assy Viewed From Front
Bypass Assembly
(dotted line)
Recirculation
Damper
(solid line)

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OVERVIEW
Electric Heater (typical)
Gas Heater Module (typical)
1.5 HEATING
1.5.1 Gas Heater Module
1.5.2 Electric Heat
1.5.3 Water Coil / Steam Coil
DOAS units can have an optional heat module with an Indirect Gas-Fired Heater. The gas heater
is factory-installed complete and ready for field-connection to gas supply and exhaust piping. The
gas heat module is available in 5:1 or 10:1 modulation and controlled by an analog signal from the
controller. Each module has a condensate discharge tube that must be trapped in the field and may
require winterization. See the RenewAire Integral Indirect Gas-Fired Heater User Manual for more
information.
DOAS units can have an optional heat module with an electric heater. The open coil-type electric
heater is factory-installed complete. Electric heaters are available in a number of different sizes and
each heater has a control module that modulates the output of the heater. The heater control module
is controlled by an analog signal from the controller. See illustration below. See the RenewAire Electric
Heater Module User Manual for further information.
DOAS units can have an optional heat module with a hot water coil or steam coil installed in the heating
module.
The unit controller provides a digital Enable signal to the user-provided hardware and then an analog
signal to modulate the steam or water source.

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OVERVIEW
1.6 COOLING
1.6.1 Split DX
DX Coil (typical)
A DX refrigeration coil is offered as an option in the DOAS, for use as part of a split DX cooling system.
The DX coil is engineered for R-410A refrigerant, but other refrigerants may be used. Consult your
RenewAire sales representative for further information.
The refrigerant coil, as installed and shipped from the factory, is charged with compressed nitrogen
gas. It is to be purged at time of connection to an external DX system. The DX coil is positioned above
a condensate drain pan that must be trapped by the user / installer. The condensate trap may require
winterization.
1.7 REHEAT
1.6.2 Chilled Water Cooling
Hot Gas Reheat Coil
A chilled water coil is offered as an option in the DOAS. It may be used in conjunction with a us-
er-supplied chilled water source.
It is the user’s responsibility to assess supply water conditions and verify suitability for use. In addi-
tion, it is the user’s responsibility to winterize the water lines as needed.
RenewAire does not make any recommendations regarding minimum quality of cooling water nor for
any treatments that may be needed.
If a chilled water coil is installed, it is the installer’s repsonsibility to provide and install a trap on the
condensate drain pan. The trap is to be freeze-protected, as needed.
A Hot Gas Reheat (HGRH) coil is optionally available. The HGRH coil is to be connected in the field to a
user-supplied refrigerant system.
HGRH Coil

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COMPONENT DESCRIPTION
Lifting Lug (typical)
EC Fan Assembly (typical) Asynchronous Motor Fan Assembly (typical)
2.0 COMPONENT DESCRIPTION
2.1 CABINET CONSTRUCTION
2.2 FAN MOTORS
2.1.1 Cabinet Paint
• The DOAS is available in either single-thickness (1”) wall or double-thickness (2” thick, with
thermal break) wall construction. See Digit 11 of the Configuration Code.
• The sheet metal exterior of the unit is 20 gauge galvanized steel.
• Doors and removable panels are secured with quarter-turn latches.
• All units are equipped with lifting lugs for hoisting by a crane and all units have integral openings
located in the unit base for use of a fork lift.
See the DOAS Rigging Manual for rigging and handling instructions.
Four options are offered for exterior finishes of the unit.
• None (galvanized)
• White paint
• Gray paint
• Custom paint
Each DOAS is equipped with direct-drive plenum-type blower / motor packages as standard. The
motors are either Premium Efficiency Electronically Commutated (EC) or Premium Efficiency TEFC
asynchronous, controlled by VFDs. EC motor assemblies are mounted on an air inlet cone which is then
bolted to the air handler cabinet. Asynchronous motors are bolted to a sled to maintain position at the
inlet cone. See Digit 19 of the Configuration Code.

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COMPONENT DESCRIPTION
2.6.1 Filter Monitors
All DN DOAS air handlers are equipped with filter monitors. When the monitor system detects
increased pressure drop across the filters, the controller provides an indication that the air filters are
partially clogged and require changing.
2.3 FAN SPEED CONTROL
2.4 DAMPERS
2.5 ENTHALPIC CORE
All dampers are Class I airfoil-type and are electrically actuated. See Section 1.4 of this manual for
more information.
Every DOAS is equipped with enthalpic cores and the number of cores varies by DOAS model. All
cores are similar in construction. See Digit 6 of the Configuration Code.
2.6 FILTERS
Filters are an essential part of the DOAS and the unit should never be operated without properly
installed filters. Filters are typically shipped installed in the unit. The standard filter is a 2 inch thick
MERV 8. Optionally available are 4 inch thick MERV 8, 2 inch thick or 4 inch thick MERV 13 filters, and
2 inch or 4 inch thick MERV 14.
When the unit is equipped with Electronically Commutated (EC) motors, fan speed control is accom-
plished by a variable analog control signal from the microprocessor controller to the EC fan motor.
If asynchronous motors are ordered, fan speed is accomplished by on-board VFDs. See digit 19 of
the Configuration Code.
The cores used in all
DOASs are 5th gen-
eration, static plate
enthalpic cores. They
are commonly referred to in
this manual as “cores”.
Enthalpic Core (typical)
2.7 GAS HEAT MODULE (OPTIONAL)
2.8 ELECTRIC HEATER MODULE (OPTIONAL)
A single indirect gas-fired heat module is provided, when ordered. The gas heat module may be
configured for either indoor installations or outdoor installations. A variety of sizes are available. The
optional heater module has an on-board control panel to modulate the heat output. An analog 0 - 10
VDC signal is produced by the premium controller. The gas heat module is always installed in the
lower part of the DOAS heat module and is always downstream of the fans. See digit 18 of the DOAS
Configuration Code. Also see the specific configuration code for gas heater modules, as shown in the
RenewAire Integral Indirect Gas-Fired Heater Module User Manual.
The optional electric heater module has an on-board control panel with a Solid State Relay (SSR)
module to modulate the heat output. An analog 0 - 10 volt signal is produced by the commercial con-
troller. Electric heater modules are always installed in the lower part of the DOAS heat module and is
always downstream of the fans. See Digit 18 of the DOAS configuration code. Also see the specific
configuration code for electric heater modules, as shown in RenewAire Electric Heater Module User
Manual.