Massachusetts’s adoption of IECC 2018 has created design challenges to how we traditionally approach multi-unit residential buildings such as apartments, condos, hotels, and dormitories. We will discuss why standards are pushing the market towards new design concepts involving demand control ventilation, energy recovery, and compartmentalization of living spaces.
Specifically, IMC2015 Section 401.2 states that in buildings where the infiltration rate in a dwelling unit is less than 5 air changes per hour each dwelling unit shall be ventilated by mechanical means.
The implication of these changes pose challenges on traditional systems that can be easily overcome by incorporating compartmental energy recovery into your designs.
The energy efficient InspirAIR® Compact balanced in-suite E80-HRX ventilation solution that is ideal for multi-unit residential buildings. The E80-HRX features an EC Motor that saves up to 35% on electricity compared to PSC motors. What’s more, the E80-HRX delivers ENERGY STAR® qualified performance and a latent transfer of over 65% in a compact, easy-to-install package that’s only 9 inches (230 mm) in height. Easily concealed in a drop-ceiling or soffit, this unit has been thoughtfully engineered for apartments, condominiums, and other dwellings.
The E80-HRX includes Aldes’ exclusive high speed on-demand boost for maximum ventilation, and FLEXControl, electronic calibration that eliminates the need for balancing dampers and maximizes overall efficiency.
Climetec integral thermal recovery fan coil unit an intelligent ERV-integrated vertical fan coil for high-rise apartments, condominiums, and hotels. The CLS-HRV takes all the benefits of a standard vertical fan coil and builds in the energy-efficient ventilation of an Energy Recovery Ventilator (ERV). The result is a heating, cooling, and ventilation solution that works smarter, saves space, and reduces costs.
Aldes Airflow & Zone Control products are designed to introduce flexibility and dynamic control to any central ventilation system. These products correct common ventilation issues such as stack effect and poor airflow balance. Millions of Constant Airflow Regulators (CAR3) have been installed to precisely regulate building ventilation systems, which saves energy by reducing the load placed on heating and cooling systems. The Zone Register Terminal (ZRT) saves additional energy by boosting exhaust ventilation rates only when spaces are occupied, eliminating wasteful ventilation in unoccupied areas.
The new dual adjustable model CAR3 Constant Airflow Regulator is a modulating orifice that automatically regulates airflows in duct systems to constant levels. The passive control element responds to duct pressure and requires no sensors or controls.
The CAR3 compensates for changes in duct pressure caused by: use of demand control solutions, thermal stack effect and dust-clogged filters as an example. The CAR3 provides a low-cost solution to balancing forced-air systems for ventilation, heating, and air conditioning, eliminating the need for on-site balancing. The CAR3 will regulate airflow in supply, return, or exhaust duct systems. The CAR3 is designed to complement ALDES register assemblies or can fit inside standard rigid round ducting, as well as fittings such as take-offs, tees, etc. with a double lip gasket around the circumference ensuring a tight, no-leak fit.
The active control element of the CAR3 is a engineered damper assembly which is calibrated to respond to changes in pressure with no input from an external power source or signal. The CAR3 is UL 2043 safety classified and labeled for flame and smoke generation.
The CAR3 airflow regulators control airflow accurately to within 10% of rated flow throughout the target operating pressure ranges; 0.12 to 1.2 in. w.g. (30 to 300 Pa) for low pressure models (CAR3-L), and 0.4 to 2.8 in. w.g. (100 to 650 Pa) for high pressure models (CAR3-H). Airflow set point is selected by turning the adjustment dial on either side (supply or exhaust) of the CAR3. The indicator shows the selected CFM. Each diameter of CAR3 has a unique airflow range for both low- and high-pressure variants, and the setpoint is infinitely adjustable across those ranges.
Aldes patented Zone Register Terminal (ZRT®) are designed to introduce flexibility and demand control to central ventilation systems. The multi-zone ZRT® regulates ventilation without need for individual fans. Each ZRT® is a combination grille, register box, control damper, and optional flow regulator(s). This unique combination provides up to four different control schemes without the need for expensive pneumatic, electronic, or DDC control systems. To ensure the proper calibration of the damper assembly, do not exceed 1.0 in. w.g. (250 Pa) of differential pressure across the damper door.
When used in central systems, the ZRT-1 model provides on-off control for on-demand ventilation. This allows fan downsizing and promotes energy savings by minimizing necessary fan horsepower and ventilation-induced heating and cooling loads on the building. The optional Constant Airflow Regulator (CAR3) can be installed in the ZRT-1’s extended duct collar to place a maximum flow limit on each terminal when activated. The automatic operation of the CAR3 will provide precise balancing to each terminal, compensating for intermittent use of other ZRTs around the building, as well as factors like stack-effect.
The ZRT-2 model is used for combination low-flow continuous indoor air quality ventilation and on-demand high-flow spot ventilation using the same central fan system. This is achieved by integrating a minimum Constant Airflow Regulator (CAR3) directly into the damper assembly. When the ZRT-2 is powered on, the control damper powers open, bypassing the low-flow CAR3 to allow the boost ventilation rate set by the maximum flow CAR3 (when equipped).
BreezSignature ENERGY STAR® qualified fans are remarkably energy-efficient with the use of brushless DC motor. BreezSignature fans are solid, elegant ventilation solutions with motion-sensing, humidity-sensing, dual speed, or single speed options with built-in controls for adjustable low speed, motion sensing or humidity sensing.
The Signature fan energy efficiency exceeds ENERGY STAR requirements by as much as 292% and is quiet as a breeze with noise level ratings as low as less than 0.3 sones.
Model SP-AP features a virtually silent electronically commutated (EC) motor with three built-in, high-speed airflow settings (50, 80 or 110 cfm). Its standard two-speed operation (commonly known as whole house) helps comply with ASHRAE 62.2, WSEC, and CAL Title 24 requirements. Fan features allow for improved performance in a variety of installations, improved indoor air quality and the elimination of issues during test and balance. Units come in lighted and no light configurations with plug and play sensors (humidity, motion, nightlight and CO2) available.
Ensure that you are specifying and supplying a code compliant ceiling radiation damper boot assembly for use with wood frame construction. Our ceiling radiation boot assemblies are pre-fabricated and UL-listed as an assembly.
The light commercial modular diffuser is an economical option that features extruded aluminum construction, 1″ louver spacing and an easy to remove, spring-loaded core for concealed mounting. Available in 4-way, 3-way, 2-way and 1-way blow patterns and in a variety of sizes.
The Constant Pressure control can be used to monitor either the static pressure or velocity pressure in a system. The control will automatically adjust the fan speed to maintain a desired static pressure or velocity pressure (used for constant CFM) in the system. This control will reduce energy consumption not only by reducing the speed and the energy used by the fan, but will also reduce the amount of conditioned air that is exhausted.
The Active Compensated Stairwell Pressurization System (ACSP) uses the L864 controller to maintain a constant positive pressure in a high-rise building stairwell or multi-zoned area. The L864 includes up to three pressure differential transducers per controller to monitor and control pressure in the pressurized zone. It can also modulate an optional relief damper for precision pressure control.
When the L864 Constant Pressure Controller receives a start command from either the FSCS or manual pull, it monitors pressure in the stairwell and adjusts the speed of the connected supply fan and optional motorized relief damper to maintain setpoint to ensure a safe and tenable environment in the stairwell and adjacent corridor.
The Laundry Exhaust control system (LES) maintains a constant pressure in a laundry exhaust system. It will rapidly respond to varying manifold pressures due to load changes in the laundry system ideal for commercial and residential applications.
For a turn-key solution you can utilize a single-wall Laundry Duct System or a double-wall pre-fabricated fire-rated shaft replacement duct.
Need assistance with a specific application and don’t know where to turn? Our team of technical engineers can assist you in applying the appropriate product for your application.