Accurex Dedicated Outdoor Air Systems
Model XRV
Complete Temperature and Humidity Control
Accurex® industry-leading, energy-efficient Dedicated Outdoor Air Systems (DOAS) are the ideal solution for commercial kitchens that require a higher percentage of fully conditioned outside air. DOAS provide complete temperature and humidity control inside your kitchen or dining spaces and can provide space and cost savings by reducing the amount of equipment needed on your roof. Accurex offers a variety of supplementary options for additional energy efficiencies and application flexibility.
Ideal Applications:
- Open-Concept Kitchens
- Open Dining Rooms with High Occupancy
- Convenience Stores
- Small Restaurants
- Fast Food Chains
- Event Venues
- Teaching Kitchens
- Food Halls
- Larger Food Halls
- Ghost Kitchen Facilities
The Accurex Advantage
- Fully conditions air for optimum employee and patron comfort.
- May eliminate the need for a dedicated make-up air unit and some or all rooftop units, saving space on the roof, installation time, and the cost of having multiple units.
- Microprocessor controllers with a web user interface allow for complete control of the unit in a safe and energy-efficient manner.
- 16:1 burner turndown capability on indirect gas heat and either digital or inverter scroll compressors for cooling provide comfort with precise control.
- Low-sound condenser fans ensure DOAS units provide both thermal and audible comfort.
- 2-inch double-wall with R13 foam insulation construction for superior quality and performance.
Simplified Controls
Microprocessor
Standard on the XRV model, the controller is factory-programmed, wired, and tested prior to shipment. It can operate as a stand-alone device or integrate with a Building Management System (BMS). It operates the unit safely and efficiently while controlling temperature and humidity. A built-in furnace commissioning guide streamlines start-up, saving time and money.
Web User Interface (UI)
The microprocessor controller includes a user interface allowing the unit to be controlled from a web browser. A full graphic display, specific to the unit selected, allows for monitoring and control without a Building Management System (BMS). It includes full control display access, customizable data trending, and service contact information.
Energy Efficiency
Save Costs and Energy
The Accurex DOAS unit provides options for additional cost savings and increased energy efficiency that meet or exceed Department of Energy minimum efficiency standards.
Standard Lead Inverter Compressor
Available from 3 to 70 tons and features:
- Improved part load efficiency
- Integrated Energy Efficiency Ratio (IEER) up to 23.7, with an average improvement over a digital scroll compressor of 15% to 20%
- Reduced sound levels
- Precise temperature and humidity control
The chart illustrates the approximate energy cost savings of an Air-Source Heat Pump (ASHP) over an indirect gas-fired furnace by region.
ASHP Annual Energy Savings vs. Indirect Gas-Fired Furnace
- Dallas: $1,132
- Seattle: $828
- Atlanta: $1,866
Air-Source Heat Pump (ASHP)
This heating and cooling option is available from 5 to 30 tons and offers:
- High efficiency with an inverter compressor (standard feature).
- Lead EC outdoor fan motor (standard feature) for modulating head pressure control.
- Coefficients of Performance (COP) ranging from 3-4, contributing to lower annual energy costs.
Primary applications where ASHP is most efficient:
- Where gas heat may not be an option (example: West Coast).
- Any region with a mild winter climate.
High Turndown Furnace
Industry-leading technology for the tubular-style heat exchanger, which is highly beneficial when large burners are utilized to prevent the unit from over or under-heating the space.
- Up to 16:1 furnace turndown for precise temperature control.
- Less cycling during part-load conditions.
- Commissioning sequence for easy start-up.
Standard and Optional Features
1. Plenum Supply/Exhaust Fan
- Direct drive plenum fan
- Neoprene isolation
- Factory-provided variable frequency drive
2. Construction
- 2-inch double-wall construction unit housing and base
- R13 injected foam insulation thermally broken
- Standard coating with subjection to salt spray testing per ASTM-B117 and evaluated using ASTM-D714 and ASTM-D610 showing no observable signs of rust or blistering until reaching 2,500 hours.
3. Filters
- Outdoor air and exhaust filters (pre-wheel): 2-inch MERV 8, 2-inch aluminum
- Supply filters (pre-coil): 2-inch MERV 8 or MERV 13, 4-inch MERV 8 or MERV 14, Combination of MERV 8 and MERV 13 or 14
4. Control Center
- 24 VAC control voltage
- Control transformer
- Non-fused disconnect switch
- UL Listed, Recognized, or Classified electrical components
- Factory prewired for single point power connection
- Phase and brownout protection (PDX)
5. Outdoor Air and Recirculated Air Dampers
- Low leakage or insulated low leakage
- Modulating actuator
6. Cooling Options
- Packaged direct expansion (PDX)
- Head pressure control with standard EC motor on the lead condenser fan or optional EC motor on all condenser fans
- Chilled water coil, mounted on a stainless steel drain pan
- Air-source heat pump, standard features include inverter compressor and modulating head pressure control
7. DX Cooling Compressor
- Quiet operating hermetic, scroll-type
- 3 to 70 tons of mechanical cooling
- Standard inverter scroll compressor on lead circuit
8. DX Cooling Condensers
- Low sound condenser fans
- Optional remote condensers
9. Heating Options
- Indirect gas-fired furnace
- Optional high turndown furnace (up to 16:1)
- Stainless steel heat exchanger with a 25-year extended warranty
- Electric heater, Silicon controlled rectifier (SCR) control
- Hot water coil
- Air-source heat pump
10. Weatherhood
- Aluminum mesh filters
- Wind-driven rain prevention
11. Reheat
- Optional modulating hot gas reheat
Application Flexibility
Horizontal Duct Connections
An optional side or end return air intake and side discharge is available for installation flexibility. Common applications include indoor mounted, pad mounted, or rooftop mounted uses, reducing ductwork and eliminating the need for a tall, costly plenum curb.
Noise Reduction
Accurex provides low-sound condenser fans as standard, offering an average sound power reduction of 5 to 8 decibels when compared to typical condenser fans.
- Low-sound swept blade condenser fans
- 2-inch R13 foam unit and base
- Compressor isolation
- Tested radiated sound data
Accurex DOAS units can be placed closer to adjacent buildings, and the public outside or inside and nearby buildings will be less affected by sound compared to the noise other rooftop units produce.
State-of-the-Art Testing
If equipment is too loud or placed too closely to other buildings, corrective actions can be time consuming and costly. Accurex's actual radiated sound data is tested in accordance with AMCA 320-07 in their state-of-the-art testing facility, the Robert C. Greenheck Innovation Center.
Radiated Sound Levels (Octave Bands Lw)
| Plane | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | LwA |
|---|---|---|---|---|---|---|---|---|---|
| A | 73 | 85 | 78 | 80 | 81 | 73 | 67 | 62 | 88 |
| B | 71 | 79 | 69 | 78 | 73 | 68 | 64 | 57 | 83 |
| C | 79 | 77 | 69 | 76 | 75 | 70 | 60 | 59 | 83 |
| D | 74 | 77 | 72 | 74 | 74 | 67 | 61 | 58 | 82 |
| E | 77 | 84 | 78 | 79 | 77 | 72 | 65 | 61 | 87 |
| Total | 83 | 89 | 82 | 85 | 84 | 78 | 71 | 67 | 93 |
Tests conducted in accordance with AMCA 320-07 - Laboratory Methods of Sound Testing of Fans Using Sound Intensity. Free field measurement plane created one foot from unit on all sides and top tested at max capacity.
Features and Benefits
DOAS has been specifically engineered for commercial cooking applications that require higher percentages of outside air for ultimate comfort in kitchen and dining applications, offering precise temperature and humidity control.
Solution Driven
Noise and humidity can make for an uncomfortable atmosphere in your dining space. Accurex offers a variety of solutions to effectively alleviate these challenges. Here are some simple solutions for consideration.
Challenge: Conditioning High Percentage Outdoor Air with Minimal Energy Usage
Accurex Solution
- High capacity (6-row) cooling coil
- 2-inch R13 foam injected insulated unit and base
- Inverter compressor (optional)
- Modulating hot gas reheat coil (optional)
- High turndown indirect gas-fired furnace (optional)
- Modulating head pressure control (optional)
- Air-source heat pump (optional)
Challenge: Controlling Outdoor Air Volume
Accurex Solution
- Low leakage dampers with modulating actuator
- Factory-mounted and wired microprocessor controller
- Energy-efficient control sequences
- Direct drive plenum fan with factory-mounted VFD
- Remote monitor and control from web-user interface
Challenge: Critical Sound Applications
Accurex Solution
- Low-sound condenser fans
- Radiated sound data off five planes of unit tested at full load
- 2-inch R13 foam injected insulated unit base
- Compressor isolation
- Inverter scroll at part load (optional)
- Electronically commutated (EC) motor (optional)
Product Certifications
Accurex takes pride in offering a high-quality, reliable product. Accurex invests resources into designing, testing, and manufacturing products to ensure customer satisfaction.
ETL Listed for electrical and overall unit safety. Every unit is tested at the factory before it is shipped to the jobsite.
Dimensional Data
Models XRV-25, 45
Component Access:
- 1: Supply Blower
- 2: Compressor/Electrical
- 3: Filters
- 4: Electrical
- 5: Optional Gas Furnace/
- 6: Coil
- 7: Optional Electric Heater
Model XRV-10
Component Access: 5 ON BACK
Model XRV-75
Component Access: 5 ON BACK
Rated Airflow Solutions
Packaged Direct Expansion
| Model | Airflow (SCFM) |
|---|---|
| XRV-10-3 | 1,100 |
| XRV-10-4 | 1,450 |
| XRV-10-5 | 1,700 |
| XRV-10-6 | 1,600 |
| XRV-10-7 | 1,700 |
| XRV-25-5 | 1,900 |
| XRV-25-7 | 1,900 |
| XRV-25-10 | 2,600 |
| XRV-25-12.5 | 2,300 |
| XRV-25-15 | 3,100 |
| XRV-45-15 | 3,800 |
| XRV-45-17.5 | 3,800 |
| XRV-45-20 | 4,600 |
| XRV-45-25 | 4,800 |
| XRV-45-30 | 5,200 |
| XRV-75-25 | 8,300 |
| XRV-75-30 | 9,400 |
| XRV-75-40 | 10,000 |
| XRV-75-50 | 10,800 |
| XRV-75-60 | 11,000 |
| XRV-75-70 | 11,500 |
Air-Source Heat Pump
| Model | Airflow (SCFM) |
|---|---|
| XRV-25-5 | 2,600 |
| XRV-25-7 | 2,700 |
| XRV-25-10 | 3,700 |
| XRV-25-12.5 | 4,300 |
| XRV-25-15 | 3,900 |
| XRV-45-15 | 4,300 |
| XRV-45-17.5 | 4,400 |
| XRV-45-20 | 6,300 |
| XRV-45-25 | 7,200 |
| XRV-45-30 | 7,100 |
Full load rating airflow per AHRI 210/240 or AHRI 340/360. PDX configured with ECM condenser fan and indirect gas heat. ASHP configured with ECM condenser fan and electric heat.
Dimensional Data Table
| Unit Size | Nominal Tonnage (tons) | Height (H) | Width (W) | Length (L) | Intake Section (A) | Condensing Section Weight (lbs) | Outdoor Intake | Supply Discharge | Return Intake Exhaust Discharge |
|---|---|---|---|---|---|---|---|---|---|
| XRV-10 | 3-7 | 58.1 | 44.0 | 82.210 | 22.3 | 1,180 | Bottom, End² | NA | 98.64/ End³ |
| XRV-25 | 5-15 | 59.3 | 52.5 | 149.51 | 22.1 | 30.1 | 2,700 | End | 1094/ Side¹ |
| XRV-45 | 15-30 | 72.5 | 68.2 | 163.21 | 27.7 | 30.1 | 4,500 | Bottom or Side | Bottom, End² or Side¹ |
| XRV-75 | 25-70 | 101.3 | 98 | 155.2 | 39/47.55 | 6,500 | Bottom or End | Not Applicable | End³ or Side¹ |
All dimensions are shown in inches. Weight is shown in pounds and includes largest supply and exhaust fans, PDX with reheat, largest indirect gas-fired furnace, all dampers and largest energy wheel. Actual weights will vary based on the unit configuration.
1 Only available with powered exhaust
2 Only available without barometric relief
3 Only available with barometric relief
4 Length with bottom or end return
5 Length with powered exhaust bumpout
Model Number Code
The Model Number Code is designed to completely identify the unit. The correct code letters must be specified to designate the configurations and size.
XRV - Base model
Nominal Airflow
- 10: 1,000 cfm
- 25: 2,500 cfm
- 45: 4,500 cfm
- 75: 7,500 cfm
- 110: 11,000 cfm
Nominal Tonnage
Compressor
- I: Inverter
- A: ASHP
Furnace Input
- A: 50 mbh
- B: 75 mbh
- C: 100 mbh
- D: 125 mbh
- E: 150 mbh
- F: 175 mbh
- G: 200 mbh
- H: 225 mbh
- I: 250 mbh
- J: 300 mbh
- K: 325 mbh
- L: 350 mbh
- M: 400 mbh
- N: 500 mbh
- P: 700 mbh
- Q: 800 mbh
- R: 1000 mbh
- S: 1050 mbh
- T: 1200 mbh
