dn series doas - renewaire · 2019-05-29 · a closer look dn series our dn series doas effectively...
TRANSCRIPT
u Split DOAS units with static- plate total energy recovery
u 375-4,950 CFM
u Single-point connection, direct-drive EC fans, injected foam panels
u Modular design
VENTILATION SOLUTIONS FOR EVERY APPLICATION
SHOWN WITH OPTIONAL VFD MOTORS (EC MOTOR STANDARD)
DEDICATED OUTDOOR AIR UNITS WITH ENERGY RECOVERY
DN SERIES DOAS
DN SERIES DEDICATED OUTDOOR AIR UNITS
RENEWAIRE CORE TECHNOLOGY
CERTIFICATION u Ensures no exhaust-airstream contaminants enter the fresh
airstream, which is maintained by airstream physical separation across the core membrane
u Superior core flammability performance; passes UL-723 and UL-1812
MAINTENANCEu RenewAire cores are easy to clean without removing them from the unit,
and they never require washing
INNOVATIVE CONSTRUCTIONu Core exchanger material is cellulosic-based and does not contain or use
halogenated flame retardants or PVCs
u Manufactured with a galvanized steel frame
EXCEPTIONAL PERFORMANCEu Transfers both heat and humidity
u Certified by the Air Conditioning, Heating and Refrigeration Institute (AHRI) for an industry leading low-to-zero Exhaust Air Transfer Ratio (EATR) at typical static pressure differentials
u No need for frost protection or condensate pans
u Laminar airflow ensures that particulates do not accumulate in the core
REDUCED COSTS u Optimized energy efficiency via core energy transfer decreases ventilation
energy requirements, which can result in smaller air conditioning and heating needs
WITH ENERGY RECOVERY
DOAS A REVOLUT IONARY IDEA Commercial buildings require outside air whenever a space is occupied to meet ventilation standards and maintain indoor air quality. Incoming ventilation and make-up air typically account for more than 80% of a building’s dehumidification load [2015 ASHRAE Applications Handbook]. Hence, decoupling outdoor air demand and interior load demand allows each system to operate independently to achieve optimized operational efficiency.
A revolutionary idea, proposed two decades ago, was to handle the outdoor air and return air separately in building HVAC systems. This new concept describes the application of Dedicated Outdoor Air Systems (DOAS) for delivering dehumidified air to buildings to improve the indoor air quality and thermal comfort. Research concluded that DOAS provided many potential advantages compared to conventional HVAC systems.
2 3
OPTIMIZE OPERAT IONAL EFF IC IENCY WITH DOAS DOAS uses separate equipment to condition all of the outdoor air brought into a building for ventilation, and delivers it to each occupied space—either directly or in conjunction with terminal or central HVAC units serving those same spaces. The terminal or central HVAC units are used to maintain space temperature.
u Improved humidity control
u Ability to use heating and cooling systems that do not provide ventilation and/or dehumidification (e.g., radiant panels, chilled beams, VRF)
u Reduced installation costs
u Reduced energy consumption
u Simplified ventilation design and control
BENEF ITS OF DOAS There are many reasons to use DOAS. Some of the most common drivers are:
RETURN AIR
SUPPLY AIR
OUTDOOR AIR
EXHAUST AIR
DEDICATED OUTDOOR AIR SYSTEM
OPTIMIZE ENERGY EFFICIENCY u Preconditions incoming air with otherwise-wasted total energy (heat and humidity) of the exhaust air going out
IN SUMMER, THE WARM, HUMID OUTSIDE AIR IS PRECOOLED AND DEHUMIDIFIED BY THE OUTGOING COOL INTERIOR AIR
IN WINTER, THE COLD, DRY OUTSIDE AIR IS PREHEATED AND HUMIDIFIED BY THE OUTGOING WARM INTERIOR AIR
FOUR PROBLEMS WITH TRADIT IONAL DES IGN
TERMINAL SYSTEMS Terminal systems, such as variable refrigerant flow (VRF), chilled beams, etc., do not have the capacity to handle the moisture load from the outdoor air. Dedicated outdoor air systems can easily manage outdoor air load, allowing the terminal systems to manage the internal load.
VAV SYSTEMS VAV systems operate in a way that modulates airflow. Mixed air conditioned in central systems cannot assure that outdoor air will be supplied into spaces. This is usually called ventilation effectiveness. A DOAS system solves this problem by providing a dedicated supply of 100% outdoor air.
OUTDOOR AIR Outdoor air in today’s designs require variable outdoor air. Central systems may not have the capacity to handle this variability, whereas dedicated outdoor air systems can be designed to handle it.
CONVENTIONAL SYSTEMS Conventional systems do not decouple the sensible and latent loads. Since most of the latent load comes from the outdoor air, operation of these systems to satisfy internal thermal loads can result in high indoor humidity, especially during unoccupied times. Properly designed dedicated outdoor air systems can accommodate 100% of the space latent loads and a portion of the space sensible loads, thus decoupling the space sensible and latent loads. Dedicated outdoor air systems are designed to solve most of the inherent problems associated with energy consumption, operational inefficiencies and steady-state thermal and humidity condition variances we see today.
CONVENTIONAL HVAC SYSTEM
OUTDOOR AIR
RETURN AIR
SUPPLY AIR
CODE REQUIREMENTS FOR ENERGY RECOVERY IN DOASSpecific codes within various regions do call for DOAS-type products to deliver 100% outside air to each occupied space. DOAS units incorporating energy recovery is a mandated feature for most code jurisdictions. ASHRAE standard 90.1 and IECC require a minimum of 50% of total effectiveness for the energy recovery component. Even when not mandated, it is one of the best ways to improve a building’s energy efficiency.
WELL BU ILD ING STANDARD, H IGHEST-QUAL ITY INDOOR A IR AND DOAS The WELL Building Standard marries best practices in design and construction with evidence-based health and wellness interventions. It harnesses the built environment as a vehicle to support human health, wellbeing and comfort. WELL Certified™ spaces and WELL Compliant™ core and shell developments can thus lead to a built environment that can help improve the nutrition, fitness, mood, sleep patterns and performance of its occupants. This is achieved in part by implementing strategies, programs and technologies designed to encourage healthier, more active lifestyles, as well as reducing occupant exposure to harmful chemicals and pollutants. 100% DOAS outdoor air units with energy recovery are one component that can be part of the WELL Building Standard and LEED certification strategy.
A CLOSER LOOK
DN SER IES Our DN Series DOAS effectively conditions outdoor air with efficient and sustainable technology. By enabling HVAC units to operate independently, depending on building load, our DOAS unit incorporates static-plate total energy recovery and a wide array of features and configurations. It will optimize your ventilation strategy, downsize equipment, decrease capital costs and realize significant operating savings.
LOW-LEAKAGE ISOLATION DAMPERS
ENERGY RECOVERY CORE
DOUBLE-WALL, INJECTED FOAM PANELS
INTEGRATED PROGRAMMABLE CONTROLS
RECIRCULATION DAMPER (BEHIND CORE)
INTERNAL MODULATING BYPASS ECONOMIZER
COOLING COIL, CHILLED WATER, DX, HEAT PUMP
MODULATING HOT-GAS REHEAT
HEATING SECTION ELECTRIC, GAS OR HOT WATER/STEAM COIL
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FILTRATION
DIRECT-DRIVE FANS Shown with optional VFD motors (EC motors standard)
DN2 DN3 DN5
UNIT
Airflow Range 375-1,650 CFM 750-3,300 CFM 1,125-4,950 CFM
Installation Location Indoor/Outdoor Indoor/Outdoor Indoor/Outdoor
Airflow Orientation Vertical/Horizontal
Available Voltages 208-230V 1P (EC DN-2 only)/3P (all); 460V 3P (all); 575V (VFD only)
Unit Disconnect Single-point connection/fused (optional)
Energy Recovery RenewAire enthalpic static-plate G5
Internal Bypass of Energy Recovery Yes, modulating bypass using face and bypass dampers
CABI
NET
Wall Construction 1" or 2" double-wall, injected foam panels (2" optional)
Insulation 1" R-6.5/2" R-13.0
Panels with Thermal Break Available on 2" double-wall units
Painted Cabinets 2,500-hour salt spray rated in white, grey or custom (optional)
Isolation Dampers Low-leakage Class I dampers
SUPP
LY/E
XHAU
ST F
AN
Supply Blower High-efficiency plenum fans
Supply Fan Type Direct-drive
Supply Fan Speed Control ECM/VFD (optional)
Supply Fan Vibration Isolation Neoprene/spring (VFD only)
Supply/Exhaust Fan Motor HP (kW)
200-277V 1P 1.35 kW N/A N/A
200-240V 3P 2.70 kW 2.70 kW 2.70 kW x2
380-480V 3P 3.70 kW 3.70 kW 3.70 kW x2
575V 3P 3 HP 5 HP 5 HP x2
VFD 3 HP 5 HP 5 HP x2
Unit ESP 2" WC at 1,500 CFM 2.5" WC at 3,000 CFM 3" WC at 4,500 CFM
COOL
ING/
HE
ATIN
G Cooling Coil Direct expansion, chilled water, heat pump (optional)
Heating SectionElectric heat (SCR), indirect gas furnace (5:1, 10:1 modulation),
hot water, heat pump, steam (optional)
Hot Gas Reheat Modulating (optional)
CON
TROL
S
Economizer/Defrost Capability Modulating
Microprocessor Controller Integrated programmable controller
Control Hardware Carel c.pCO mini
Optional Communications BACnet MS/TP or IP, Modbus RTU, or TCP
Airflow Monitoring Yes
Recirculation Mode Yes (optional)
OPTI
ONS
GFCI Convenience Outlet 120 VAC, 20A (field powered)
Roof Curbs 14" height
Seismic and Wind-Rated Curbs Yes
MERV 8 (2" only), 13 and 14 Filters Available in 2" and 4"
Mist Eliminator 3/8"
Drain Overflow Switch Yes
Coil Coatings Yes
Certifications
DN MODELS AT A GLANCE
6
12
COOLING1. Chilled Water Coil
2. Chilled Water Coil
3. Direct Expansion Coil
4. Direct Expansion Coil
HEATING1. Hot Water Coil
2. Steam Coil
3. Hot Water Coil
4. Steam Coil
OTHER VARIABLESFan After
All Orientations
4. For #1 to be true,Same Coil must be “NO”
ERV + CC + HC (DT)12
COOLING1. Direct Expansion &Hot Gas Reheat Coil
HEATING1. Gas
OTHER VARIABLESFan After
All Orientations
ERV + CC + HGRH + GH (DT)
123
COOLING1. Direct Expansion& Hot Gas Reheat Coil
HEATING1. Steam Coil OR Hot Water Coil
OTHER VARIABLESFan After
All Orientations
ERV + CC + HGRH + HC (DT)
1
COOLING1. Chilled Water CoilOR Direct Expansion Coil
HEATING1. Gas
OTHER VARIABLESFan After
All Orientations
ERV + CC + GH (DT)
1
COOLING1. Chilled Water CoilOR Direct Expansion Coil
HEATING1. Electric
OTHER VARIABLESFan After
All Orientations
ERV + CC + EH (DT)123
COOLING1. Direct Expansion& Hot Gas Reheat Coil
HEATING1. Steam Coil ORHot Water Coil
OTHER VARIABLESFan Before
Orientations A, C, E, G,H, L, M, R
ERV + CC + HGRH + HC (BT)
12
COOLING1. Direct Expansion &Hot Gas Reheat Coil
HEATING1. Electric
OTHER VARIABLESFan After
All Orientations
ERV + CC + HGRH + EH (DT)
12
COOLING1. Chilled Water Coil
2. Chilled Water Coil
3. Direct Expansion Coil
4. Direct Expansion Coil
HEATING1. Hot Water Coil
2. Steam Coil
3. Hot Water Coil
4. Steam Coil
OTHER VARIABLESFan Before
Orientations A, C, E, G, H,L, M, R
4. For #1 to be true,Same Coil must be “NO”
ERV + CC + HC (BT)
1
COOLING1. Chilled Water CoilOR Direct Expansion Coil
HEATING1. Gas
OTHER VARIABLESFan Before
All Orientations
ERV + CC + GH (BT)
12
COOLING1. Direct Expansion& Hot Gas Reheat Coil
HEATING1. Electric
OTHER VARIABLESFan Before
All Orientations
ERV + CC + HGRH + EH (BT)
12
COOLING1. Direct Expansion& Hot Gas Reheat Coil
HEATING1. Gas
OTHER VARIABLESFan Before
All Orientations
ERV + CC + HGRH + GH (BT)
1
COOLING1. Chilled Water CoilOR Direct Expansion Coil
HEATING1. Electric
OTHER VARIABLESFan Before
All Orientations
ERV + CC + EH (BT)
1
COOLING1. Chilled Water Coil, Direct Expansion Coil
2. None
3. Heat Pump Coil
4. Chilled Water Coil
HEATING1. None
2. Steam Coil, Hot Water Coil
3. Heat Pump Coil
4. Hot Water Coil
OTHER VARIABLESFan After
All Orientations
4. For #4 to be true,Same Coil must be “YES”
ERV + CC/HC (DT)
12
COOLING1. Heat Pump & Hot GasReheat Coil OR DirectExpansion & Hot GasReheat Coil
HEATING1. None OR Heat Pump Coil
OTHER VARIABLESFan Before
Orientations A, C, E, G,H, L, M, R
ERV + CC + HGRH (BT)
12
COOLING1. Heat Pump & Hot GasReheat Coil OR DirectExpansion & Hot GasReheat Coil
HEATING1. None OR Heat Pump Coil
OTHER VARIABLESFan After
All Orientations
ERV + CC + HGRH (DT)
1
COOLING1. Chilled Water Coil OR Direct Expansion Coil
2. None
3. Heat Pump Coil
4. Chilled Water Coil
HEATING1. None
2. Steam Coil ORHot Water Coil
3. Heat Pump Coil
4. Hot Water Coil
OTHER VARIABLESFan Before
Orientations A, C, E, G,H, L, M, R
4. For #4 to be true,Same Coil must be “YES”
ERV + CC/HC (BT)
COOLINGNone
HEATINGElectric
OTHER VARIABLESFan BeforeAll Orientations
ERV + EH (BT)
COOLINGNone
HEATINGNone
OTHER VARIABLESFan BeforeAll Orientations
ERV ONLY
COOLINGNone
HEATINGGas
OTHER VARIABLESFan BeforeAll Orientations
ERV + GH (BT)
ERV - Energy Recovery Ventilator
EH - Electric HeaterCC - Cooling CoilHC - Heating CoilGH - Gas Heat ModuleHGRH - Hot Gas Reheat CoilBT - Blow ThruDT - Draw Thru
MODULAR DESIGNS
7
ROOFTOP APPLICATIONS SHOWN,
CONFIGURATION CAN BE APPLIED TO INDOOR UNITS
8
APPLICAT ION S T R AT E G I E STERMINAL UNIT SYSTEMS
DOAS DIRECT TO ZONE WITH TERMINAL UNITS
u Variable refrigerant flow/volume
u Fan coils
u Heat pumps
u Chilled beam
u Radiant floor heating and cooling
u Packaged terminal air conditioning
DOAS DIRECT TO ZONE WITH ROOFTOP/CENTRAL AHU
ROOFTOP APPLICATIONS SHOWN,
CONFIGURATION CAN BE APPLIED TO INDOOR UNITS
APPLICAT ION S T R AT E G I E STERMINAL UNIT SYSTEMS
9
DOAS AIR SUPPLIED TO INTAKES OF TERMINAL UNITS
u Variable refrigerant flow/volume
u Fan coils
u Active chilled beam
DOAS AIR SUPPLIED TO CEIL ING PLENUMS
u Variable refrigerant flow/volume
u Fan coils
u Chilled beam
ROOFTOP APPLICATIONS SHOWN,
CONFIGURATION CAN BE APPLIED TO INDOOR UNITS
APPLICAT ION S T R AT E G I E STERMINAL UNIT SYSTEMS
RenewAire.com 800.627.4499 LIT0121_01 (05/19)
ACCESSORIES
F ILTERS
2" or 4" MERV 13, 14 Filters
CURBS AND CURB CL IPS
Curb Clip Kit Hurricane or Seismic Rated Curbs
HEATERS
EK Series Electric Duct Heater (for indoor units only)
CONTROLS
Duct Static Pressure Sensor Wall/Duct Mount without Display
Duct Static Pressure Sensor Wall/Duct Mount
with Display
Smoke Detector Duct Mount
Occupancy Sensor Wall Mount
Occupancy Sensor Ceiling Mount
Temperature Sensor Duct Mount
Room Temperature & Humidity Sensor
CO2 Sensor Wall Mount IAQ Sensor Wall Mount CO2 Sensor Duct Mount IAQ Sensor Duct Mount
Remote Display Handheld or Wall Mount
COIL ACCESSORIES
Waterless Trap Negative Pressure Waterless Trap Positive Pressure
ROOFTOP APPLICATIONS SHOWN,
CONFIGURATION CAN BE APPLIED TO INDOOR UNITS