RenewAire DN Series Installation, Operation And Maintenance Manual
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RenewAire DN Series Installation, Operation And Maintenance Manual

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DN SERIES DOAS
Installation, Operation and Maintenance Manual
DN2IN
DN3IN
DN5IN
Model DN2IN Shown

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Summary of Contents for RenewAire DN Series

  • Page 1 DN SERIES DOAS Installation, Operation and Maintenance Manual DN2IN DN3IN DN5IN Model DN2IN Shown...
  • Page 2 Read and comply with all safety information and warnings in is off and wear protective equipment per NFPA 70E before the RenewAire Indirect Gas-Fired User Manual that is included working within electric control enclosure. Failure to comply can with the unit.
  • Page 3 Locate the RenewAire unit label found on the outside of the unit. contractor. The completed NOTE: This information is for purposes of identifying the unit-specific option data from the document is to be turned Option Code.
  • Page 4 ERV + CC + HGRH + EH (DT) ERV + CC + GH (DT) ERV + CC + HGRH + GH (DT) ERV + CC + HC (DT) ERV + CC + HGRH + HC (DT) Subject to change without notice: RENEWAIRE.COM | 1.800.627.4499 1.800.627.4499...
  • Page 5 2 @ 3HP ea. 50/60 Hz Three Note: Electrical data shown is for a standard unit without cooling and heating. Refer to cores.renewaire.com for project specific submittal for electrical data for the specific unit with all included options. AIRFLOW PERFORMANCE...
  • Page 6 SPECIFICATIONS & DIMENSIONS Dimension drawings for the DN depict largest cabinet size available. Refer to CORES.RenewAire.com for project specific unit drawings. NOTE: This drawing represents the DN-2-IN with 1" thick wall panels, coils and heat module. Dimensioned drawings for other configurations are found on the RenewAire website.
  • Page 7 SPECIFICATIONS & DIMENSIONS Dimension drawings for the DN depict largest cabinet size available. Refer to CORES.RenewAire.com for project specific unit drawings. NOTE: This drawing represents the DN-2-IN with 2" thick wall panels, coils and heat module. Dimensioned drawings for other configurations are found on the RenewAire website.
  • Page 8 ERV + CC + HGRH + EH (DT) ERV + CC + GH (DT) ERV + CC + HGRH + GH (DT) ERV + CC + HC (DT) ERV + CC + HGRH + HC (DT) Subject to change without notice: RENEWAIRE.COM | 1.800.627.4499 1.800.627.4499...
  • Page 9 50/60 Hz Three 11.9 Note: Electrical data shown is for a standard unit without cooling and heating. Refer to cores.renewaire.com for project specific submittal for electrical data for the specific unit with all included options. AIRFLOW PERFORMANCE DN-3 200-240V 3P EC...
  • Page 10 SPECIFICATIONS & DIMENSIONS Dimension drawings for the DN depict largest cabinet size available. Refer to CORES.RenewAire.com for project specific unit drawings. NOTE: This drawing represents the DN-3-IN with 1" thick wall panels, coils and heat module. Dimensioned drawings for other configurations are found on the RenewAire website.
  • Page 11 SPECIFICATIONS & DIMENSIONS Dimension drawings for the DN depict largest cabinet size available. Refer to CORES.RenewAire.com for project specific unit drawings. NOTE: This drawing represents the DN-3-IN with 2" thick wall panels, coils and heat module. Dimensioned drawings for other configurations are found on the RenewAire website.
  • Page 12 ERV + CC + HGRH + EH (DT) ERV + CC + GH (DT) ERV + CC + HGRH + GH (DT) ERV + CC + HC (DT) ERV + CC + HGRH + HC (DT) Subject to change without notice: RENEWAIRE.COM | 1.800.627.4499 1.800.627.4499...
  • Page 13 50/60 Hz Three 22.5 Note: Electrical data shown is for a standard unit without cooling and heating. Refer to cores.renewaire.com for project specific submittal for electrical data for the specific unit with all included options. AIRFLOW PERFORMANCE DN-5 200-240V 3P EC...
  • Page 14 SPECIFICATIONS & DIMENSIONS Dimension drawings for the DN depict largest cabinet size available. Refer to CORES.RenewAire.com for project specific unit drawings. NOTE: This drawing represents the DN-5-IN with 1" thick wall panels, coils and heat module. Dimensioned drawings for other configurations are found on the RenewAire website.
  • Page 15 SPECIFICATIONS & DIMENSIONS Dimension drawings for the DN depict largest cabinet size available. Refer to CORES.RenewAire.com for project specific unit drawings. NOTE: This drawing represents the DN-5-IN with 2" thick wall panels, coils and heat module. Dimensioned drawings for other configurations are found on the RenewAire website.

  • Page 16: Table Of Contents

    TABLE OF CONTENTS DOAS DN-Series Indoor 1.0 OVERVIEW 3.2 RECEIVING ............40 1.1 DESCRIPTION ............22 3.3 RIGGING ...............40 1.1.1 Energy Recovery ..............22 1.1.2 Ventilation Air..............22 3.4 HANDLING AND STORAGE ........40 1.1.3 Heating ................22 1.1.4 Cooling ................22 4.0 UNIT PLACEMENT 1.1.5 Reheat ................22 4.1 SOUND ATTENUATION OUTSIDE THE BUILDING ..40 1.2 MODEL SIZES ............23 4.2 PLACEMENT CAUTIONS ........40...
  • Page 17 TABLE OF CONTENTS DN-Series Indoor DOAS 7.0 MAINTENANCE Figure 2.2.0 EC Fan Assembly (standard) ........32 Figure 2.2.1 Asynchronous Motor Fan Assembly (optional) ..32 7.1 SCHEDULE ............57 Figure 2.3.0 EA Fan with Damper (behind) .........33 Figure 2.3.1 OA Damper and Actuator ........33 7.1.1 General Cleaning and Inspection (Quarterly) .......57 Figure 2.3.2 Face and Bypass Dampers ........33 7.1.2 Filters (Quarterly) ..............58...
  • Page 18 12: 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". For Technical Support E-mail: RenewaireSupport@renewaire.com To Place an Order E-mail: RenewaireOrders@renewaire.com 1.800.627.4499...
  • Page 19 20. Refrigeration Type Code "P" is only available with Location Code "RT" and Cooling Codes "D" & "R" and Phase Code "3". 21. Heating Codes "H" & "S" are not available with Cooling Codes "H" or "P". For Technical Support E-mail: RenewaireSupport@renewaire.com To Place an Order E-mail: RenewaireOrders@renewaire.com 1.800.627.4499...
  • Page 20 CONFIGURATION CODE DOAS DN-Series Indoor kW for EC Motors (See Restrictions 1, 6, 7, & 8) Coil Mode (Water Coil Only) (See Restriction 16) 1.35kW Cooling 2.70kW Heating 3.70kW Cooling & Heating (Seasonal Changeover) Fan Horspower for VFD (See Restrictions 2, 4, & 5) Coil Style (Evaporator Coil Only) (See Restriction 10) 3 HP Standard...
  • Page 21 CONFIGURATION CODE DN-Series Indoor DOAS Restrictions: 16: One coil may be specified to act as both a hot water and chilled water coil. Only available when Cooling Code is C and Heating Code is H. 17: Combustion Inlet Type Separated Combustion only applies for Location Code "IN". 18: Outside Air Hood Moisture Eliminator only available in Location Code "RT".

  • Page 22: Overview

    The HGRH coil and DX cooling coil need to be selected together to achieve the desired performance. Contact RenewAire for help in specifying an HGRH coil. 1.800.627.4499...

  • Page 23: Model Sizes

    OVERVIEW DN-Series Indoor DOAS 1.2 MODEL SIZES 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) CONTROLS EA FAN ENERGY RECOVERY MODULE MODULE...

  • Page 24: Airflows

    OVERVIEW DOAS DN-Series Indoor 1.3 AIRFLOWS 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.
  • Page 25 OVERVIEW DN-Series Indoor DOAS KEY TO AIRFLOW CODES KEY TO CONFIGURATION CODES CODE OA Outside Air Into Unit RA Room Air Into Unit SA Supply Air Into Occupied Space EA Exhaust Air Leaving Unit Horizontal Vertical DNIN DNIN FIGURE 1.3.0 AIRFLOW CONFIGURATION FOR ORIENTATION H FIGURE 1.3.1 AIRFLOW CONFIGURATION FOR ORIENTATION A DNIN DNIN...
  • Page 26 OVERVIEW DOAS DN-Series Indoor DNIN DNIN FIGURE 1.3.4 AIRFLOW CONFIGURATION FOR ORIENTATION R FIGURE 1.3.5 AIRFLOW CONFIGURATION FOR ORIENTATION C DNIN DNIN FIGURE 1.3.6 AIRFLOW CONFIGURATION FOR ORIENTATION V FIGURE 1.3.7 AIRFLOW CONFIGURATION FOR ORIENTATION D DNIN DNIN FIGURE 1.3.9 AIRFLOW CONFIGURATION FOR ORIENTATION G FIGURE 1.3.8 AIRFLOW CONFIGURATION FOR ORIENTATION E 1.800.627.4499...
  • Page 27 OVERVIEW DN-Series Indoor DOAS DNIN DNIN FIGURE 1.3.10 AIRFLOW CONFIGURATION FOR ORIENTATION J FIGURE 1.3.11 AIRFLOW CONFIGURATION FOR ORIENTATION K DNIN DNIN FIGURE 1.3.12 AIRFLOW CONFIGURATION FOR ORIENTATION L FIGURE 1.3.13 AIRFLOW CONFIGURATION FOR ORIENTATION M DNIN DNIN FIGURE 1.3.14 AIRFLOW CONFIGURATION FOR ORIENTATION N FIGURE 1.3.15 AIRFLOW CONFIGURATION FOR ORIENTATION P 1.800.627.4499...

  • Page 28: Internal Airflow

    OVERVIEW DOAS DN-Series Indoor 1.3.2 Internal Airflow Inside the DN DOAS unit, OA and RA airstreams are directed based on operating modes. There are three modes of operation: energy recovery, economizer/bypass and recirculation. In Energy Recovery Mode, OA and RA airflow is through the enthalpic cores. The isolation dampers are open and both fans are operating.
  • Page 29 PASSES THROUGH THE ENTHALPIC CORES. Face OVERVIEW ALL OUTSIDE AIR Energy Damper AND RETURN AIR DN-Series Indoor Recovery OUTSIDE DOAS (open) Heat Cooling/ Energy Recovery PASSES THROUGH Cores Module Controls Module Module THE ENTHALPIC Module CORES. Energy Bypass (Economizer)/ Bypass Recovery Recirculation Assembly Heat...

  • Page 30: Heating

    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 Integral Electric Heat Module User Manual for further information.

  • Page 31: Cooling

    There are primarily three different methods for accomplishing hot gas reheat. All three include a condenser reheat coil but require different equipment and are connected and piped differently, based on the method. Consult your RenewAire sales representative or the factory for further information and for help in specifying an HGRH coil.

  • Page 32: Component Description

    COMPONENT DESCRIPTION DOAS DN-Series Indoor 2.0 COMPONENT DESCRIPTION 2.1 CABINET CONSTRUCTION The DN 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.

  • Page 33: Dampers

    COMPONENT DESCRIPTION DN-Series Indoor DOAS 2.3 DAMPERS AMCA Class 1A leakage-rated airfoil dampers are standard on all units. Standard motorized isolation dampers are located at the unit walls for Outside Air (OA) and Exhaust Air (EA). Standard face and bypass dampers are located internal to the unit in the energy recovery module.

  • Page 34: Enthalpic Cores

    2.6 CONTROLS RenewAire provides an integrated control package with or without a BACnet license. See Digit 21 of the Configuration Code. The points list is found in the DN-Series Integrated Programmable Controls Manual.

  • Page 35: Variable Frequency Drive (Optional)

    The gas heat module is always installed in the lower part of the DN heat module and is always downstream of the fans. See Digit 18 of the DN Configuration Code. Also see the RenewAire Integral Indirect Gas-Fired Heat Module User Manual.

  • Page 36: Split Dx Cooling (Optional)

    COMPONENT DESCRIPTION DOAS DN-Series Indoor 2.9 SPLIT DX COOLING (OPTIONAL) All units ordered with optional split DX cooling have a factory-installed DX coil. The DX coil has a liquid (supply) line connection on the leaving air side of the coil. A suction line connection is on the entering air side of the coil.

  • Page 37: Waterless Drain Traps

    All DN units are palletized and then shipped by common carrier. It is the installer’s / customer’s responsibility to coordinate delivery and properly handle the shipment during unloading and storage. RenewAire also provides a model-specific manual for shipping, rigging, lifting and assembly that is available online at RenewAire.com.

  • Page 38: Shipping Dimensions And Weight

    SHIPPING/RECEIVING DOAS DN-Series Indoor 3.1.2 Shipping Dimensions and Weight DOAS Model DN-2 with 1" thick walls: 140" L x 90" W x 77" H DOAS Model DN-2 with 2" thick walls: 140" L x 90" W x 79" H Typical shipping weight with 1" thick walls: 1450–2625 pounds Typical shipping weight with 2"...

  • Page 39: Dn-3-In Unit Corner Weights

    SHIPPING/RECEIVING DN-Series Indoor DOAS 3.1.4 DN-3-IN Unit Corner Weights DN-3-IN 1" CABINET UNIT WEIGHTS (LBS) MODELS UNIT 70.86 77.42 36.24 38.21 1600 ERV + Coil 95.40 77.42 50.40 36.99 2300 DN-3-IN ERV + EH 117.21 77.42 55.07 37.70 2350 ERV + GH 117.21 77.42 58.82...

  • Page 40: Receiving

    3.3 RIGGING For rigging instructions, see the DN-Series DOAS Shipping, Rigging, Hoisting and Assembly Manual that is available online at RenewAire.com. 3.4 HANDLING AND STORAGE Upon delivery to a job site, the DN should ideally be placed and installed immediately. If the unit cannot be installed immediately, it should be protected from the weather, either by moving it indoors or by covering with tarps.

  • Page 41: Duct Connections

    INSTALLATION DN-Series Indoor DOAS 5.2 DUCT CONNECTIONS NOTE: Ducts inside All ductwork is field-supplied and installed. In general, duct construction should follow SMACNA a building that are guidelines for duct construction and airtightness. Follow duct design specified in construction connected to the documents to achieve design system airflows.

  • Page 42: Electrical Requirements

    INSTALLATION DOAS DN-Series Indoor 5.3 ELECTRICAL REQUIREMENTS WARNING ARC FLASH AND ELECTRIC SHOCK HAZARD Arc flash and electric shock hazard. Disconnect all electric power supplies, verify with a voltme- ter that electric power is off and wear protective equipment per NFPA 70E before working within electric control enclosure.

  • Page 43: High-Voltage Electrical Connections

    INSTALLATION DN-Series Indoor DOAS 5.3.2 High-Voltage Electrical Connections NOTE: Every DN has This DN uses a single-point high voltage electrical supply connection. All wires are to be terminated an electrical box, at the same point on the top of the disconnect switch. See photo below. Depending on the ampacity commonly referred of the unit, different disconnect switches may be used, but high voltage supply wiring is always to as an “E-Box”.
  • Page 44 INSTALLATION DOAS DN-Series Indoor SMOKE DETECTOR SMOKE DETECTOR MOTION CONTROLLER MOTION CONTROLLER COMMON BUS TERMINAL BLOCK 24 VAC BUS TERMINAL BLOCK V IN, DUCT PRESSURE SENSOR COM, EXTERNAL TEMP/HUMIDITY SENSOR 0–10 VDC INPUT, CO2 OR IAQ/VOC SENSOR 24 VAC, EXTERNAL TEMP/HUMIDITY SENSOR COIL LAT SENSOR HUMIDITY, EXTERNAL TEMP/HUMIDITY SENSOR 0–10 VDC INPUT, DUCT PRESSURE SENSOR...

  • Page 45: 24Vac Class Ii Power Supply

    INSTALLATION DN-Series Indoor DOAS 5.3.4 24 VAC Class II Power Supply This unit is equipped with 2 Class II 24 VAC power supply transformers (see image below). One transformer provides power for the integrated controller and the second transformer provides power for optional sensors.

  • Page 46: Wiring Schematics

    INSTALLATION DOAS DN-Series Indoor 5.4 WIRING SCHEMATICS NOTE: This wiring 5.4.1 Typical Input Power schematic is TYPICAL of single phase, 230 VAC input for model DN-2. This drawing is for a unit that includes gas heat and EC motors. A unit-specific electrical schematic is found inside the access door to the core module.
  • Page 47 INSTALLATION DN-Series Indoor DOAS NOTE: This wiring schematic is TYPI- CAL of three phase, 208–230 and 460 VAC input for model DN-2 and DN-3. This drawing is for a unit that includes gas heat and EC motors. A unit-specific electrical schematic is found inside the access door to the core module.
  • Page 48 INSTALLATION DOAS DN-Series Indoor NOTE: This wir- ing schematic is TYPICAL of three phase, 208–230 and 460 VAC input for model DN-5. This drawing is for a unit that includes gas heat and EC motors. A unit-specific electrical schematic is found inside the access door to the core module.

  • Page 49: Typical Control Wiring

    INSTALLATION DN-Series Indoor DOAS 5.4.2 Typical Control Wiring NOTE: This wiring schematic is TYPI- CAL control wiring for a three phase, 208– 230 and 460 VAC input for models DN-2, DN-3, and DN-5. This drawing is for a unit that includes gas heat and EC motors.

  • Page 50: Typical Field Wiring

    INSTALLATION DOAS DN-Series Indoor 5.4.3 Typical Field Wiring NOTE: This wiring schematic is TYPI- CAL of three phase, 208–230 and 460 VAC input for models DN- 2, DN-3, and DN-5. This drawing is for a unit that includes gas heat and EC motors.

  • Page 51: Piping Connections

    Drain Trap Construction in this manual. A poorly designed and installed drain trap can restrict condensate flow and may cause the condensate to overflow. For specific information on trapping a gas heat module condensate drain, see the RenewAire Integral Indirect Gas-Fired Heat Module User Manual.
  • Page 52 INSTALLATION DOAS DN-Series Indoor GAS HEAT CONDENSATE TUBE DX COIL CONDENSATE PAN (ACCESSIBLE FROM BENEATH UNIT) FIGURE 5.5.1 CONDENSATE DRAIN LOCATIONS (TYPICAL) When the SA fan module is located upstream of the cooling module, the resulting pressure sensed at the condensate pan will be POSITIVE. See below. COIL MODULE SA FAN MODULE FIGURE 5.5.2 SA FAN MODULE LOCATED BEFORE THE COIL MODULE...

  • Page 53: Drain Trap Construction

    For all drain traps, RenewAire recommends the installation of threaded plugs at several locations to permit periodic cleaning and filling of the trap. Also recommended is the use of a vacuum breaker if water is being discharged from the trap into a drain pipe.
  • Page 54 INSTALLATION DOAS DN-Series Indoor In order to properly design drain traps, certain information must be obtained. First, carefully check the drawings to find the number and locations of all drain traps. Also from the drawings, determine if the drain traps will be positive or negative pressure. If a positive pressure trap is needed, fabricate the trap as shown in the drawing below.

  • Page 55: Waterless Drain Traps

    DOAS 5.5.4 Waterless Drain Traps As an alternative to a field-fabricated and installed condensate P-trap, RenewAire offers an HVAC waterless trap. The advantages to a waterless trap are that they may require less vertical clearance for (negative pressure) installations, they generally do not require winterization and they do not require priming at the beginning of the cooling season.

  • Page 56: Gas Requirements

    5.6 GAS REQUIREMENTS All DN units equipped with an indirect-fired gas heat module are to have gas supply connected in accordance with the instructions in the RenewAire Indirect Gas-Fired Heat Module User Manual supplied with this unit. 6.0 OPERATION 6.1 PRINCIPLE OF OPERATION...

  • Page 57: Quick-Start

    7.0 MAINTENANCE ming and operating the Integrated RenewAire units are built to operate with minimal maintenance. Experience on the part of Programmable Controller, the service person is the most important issue in establishing a maintenance schedule. see the DN-Series Integral Maintenance is performed on a quarterly and annual basis.
  • Page 58 MAINTENANCE DOAS DN-Series Indoor 7.1.2 Filters (Quarterly) Filter cleanliness and replacement is the most important and frequent maintenance issue. Dirty filters will cause an immediate reduction in operating efficiency of the DOAS. Normally, filter condition should be checked frequently by checking pressure drop data on the integrated microprocessor controller.
  • Page 59 MAINTENANCE DN-Series Indoor DOAS Annual inspection: Inspect all door seals to make sure they are still pliable and function properly. Replace any seals that are hardened, cracked or ineffective. Inspect doors for proper alignment and door handle tension. See Section 7.1.15 in this manual.
  • Page 60 MAINTENANCE DOAS DN-Series Indoor DO NOT DIRECT COMPRESSED AIR AT THE CORE MEDIA. DO NOT REMOVE THE ENTHALPIC CORES FROM THE UNIT UNLESS NECESSARY. NOTE: When cores USE CAUTION WHEN WORKING AROUND THE ENTHALPIC CORES. DO NOT DROP TOOLS OR are removed from OTHER OBJECTS ON THE CORES, DO NOT BUMP OR TWIST THE CORES.
  • Page 61 MAINTENANCE DN-Series Indoor DOAS Soiled fins reduce the capacity of the coil, demand more energy from the fan and create NOTE: Whenever an environment for odor and bacteria to grow and spread through the conditioned zone. using cleaning Low pressure water spray may be used for cleaning the fins. In all cases, TEST THE SPRAY agents inside an PRESSURE over a small corner of the coil to determine if the fins will withstand the spray unit, thoroughly...
  • Page 62 MAINTENANCE DOAS DN-Series Indoor 7.1.14 Current Switch Adjustment Current switches are installed in the low voltage side of the E-Box. They work by sensing current passing through one or more high voltage power lines that pass through the center of the switch module.
  • Page 63 MAINTENANCE DN-Series Indoor DOAS FIGURE 7.1.3 SINGLE PHASE EC MOTOR WIRING CONNECTIONS FIGURE 7.1.4 THREE PHASE EC MOTOR WIRING CONNECTIONS Gap between impeller and inlet cone (U) FIGURE 7.1.5 ASYNCHRONOUS MOTOR AND FAN ASSEMBLY, CORRECT OVERLAP IS .14" 1.800.627.4499...
  • Page 64 DOAS. 7.1.18 Water Treatment RenewAire does not make any recommendations regarding minimum water quality for user- supplied water in the DOAS coils. If the user is employing a water treatment system, observe the instructions provided with the specific treatment system.
  • Page 65 MAINTENANCE DN-Series Indoor DOAS 7.2 MAINTENANCE RECORDS Also see the User Manuals for any included options such as gas heat and electric heat. MAINTENANCE LOG ENTER DATES OF SERVICE OA FILTER CHANGE RA FILTER CHANGE INSPECTION/ INITIALS CLEANING 1.800.627.4499...
  • Page 66 MAINTENANCE DOAS DN-Series Indoor 7.3 SERVICE PARTS FIGURE 7.3.0 DN SERVICE PARTS 1.800.627.4499...
  • Page 67 Email: RenewAireSupport@RenewAire.com Remember that RenewAire Customer Service can only assist with the products sold by RenewAire, it cannot resolve engineering issues that result from air handling system design by others, nor can it provide instructions for connecting to an owner-supplied BMS. There is a...
  • Page 68 About RenewAire For over 30 years, RenewAire has been a pioneer in enhancing indoor air quality (IAQ) in commercial and residential buildings of every size.This is achieved while maximizing sustainability through our fifth-generation, static-plate, enthalpic-core Energy Recovery Ventilators (ERVs) that optimize energy efficiency, lower capital costs via load reduction and decrease operational expenses by minimizing equipment needs, resulting in significant energy savings.

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