Saving with Comfort

Confidential - 1 Note: This diagram can represent heating or cooling scenarios 1. Single thermostat systems are ineffective at providing comfort throughout the office building T Sun ExposureTree Shade Distance  Areas far from the thermostat are left at sub-optimal temperatures  Single thermostat systems cannot compensate for room specific factors The Problem: Single thermostat systems are ineffective and inefficient

Confidential - 2 The Problem: Single thermostat systems are ineffective and inefficient 2. Central forced air systems use more energy than required Do not account for where or when energy is required  Energy is wasted on unoccupied rooms  The rooms in this representative building are empty 54% of the day

Confidential - 3 Zone Control is the answer. Or is it ? Zoning is expensive to retrofit  Tearing up ductwork and walls  Pulling control wires is a huge hassle

Confidential - 4 Zoning Issues Constant Volume Systems specifically require Bypass dampers  Bypass dampers are painful to install  They reduce system efficiency by 16%  California is going to ban them from 2014

Confidential - 5 The Real problem then with traditional zone systems is that they are reactive! Fully opening and closing dampers is like on and off a tap to adjust the flow of water while taking a shower… Heating & Cooling is a slow process. After the temperature in a zone is in error, zoning systems use a larger input - fully opening or closing dampers to try overcome thermal inertia in a short time

Confidential - 6 Every HVAC contractor balances the airflow in the building as part of the commissioning process. However, the balancing is for a static set of conditions. As the weather, occupancy and other loads change the balancing is no longer accurate

Confidential - 7 What if we could make subtle changes to balancing dampers to dynamically balance the airflow within a building for the current set of conditions ? Continuous commissioning should not be a buzzword… Doing so however, requires we know in advance what the thermal loads are going to be in every part of the building since small control inputs require a longer time to overcome thermal inertia

Confidential F’s technology offers dynamic airflow balancing 1. Wireless Zone Controllers Provide per diffuser temperature control 2. Central Control Unit Analyze Control Sense Cloud powered Smart Algorithms control HVAC equipment and predictively balance airflow 3. Smart Dampers Modulate to control airflow

Confidential - 9 Dynamic Balancing for Constant Air Volume System Wireless Zone Controllers Provide per diffuser temperature control Central Control Unit Control HVAC equipment and predictively balance airflow Smart Dampers Modulate to control airflow Supply air sensor Measure backpressure, supply air temperature and CO 2 levels How it works A wireless zone controller monitors the temperature in each zone, the damper position and airflow temperature and sends it to the Central Control Unit (CCU) The CCU collects the information from all the zones and sends it to servers in the cloud Powerful servers in the cloud crunch the data along with the current weather to create a thermal model of the building The algorithms predict the energy requirements of the zones during the day and the required damper positions The calculations are sent back to the CCU which sends the required damper control points to the zone controllers that move the smart dampers to the ideal position The CCU then turns on the HVAC cooling or heating coil

Confidential Zone Module  Measures Zone and Airflow Temperature  Wireless communication (to CCU) enables easy installs  Controls 2 Smart Dampers  Available with Indoor Air Quality Measurement for Demand Based Ventilation

Confidential Central Control Unit (CCU)  Consolidates real-time FSV data  Unified zone control and alerting  Controls HVAC equipment  Communicates with Cloud Servers

Confidential Harnessing the power of the cloud CCU sends the data to server farm for offline processing  Models building thermal envelope  Anticipates energy requirements  Predictively controls operating parameters =

Confidential Smart Dampers (SD)  Rotary Actuation mechanism  Easy drop-in installation cuts install time from 45minutes to 10 minutes  Simple cable run to FSV  Adjusted vent does not draw power  CE and UL rated

Confidential - 14 The Result - Active Balancing AfterBefore

Confidential - 15 The Result - Active Balancing After Before

Confidential - 16 The Result - Active Balancing After Before System turn on

Confidential - 17 Facility Managers have live insight Facility Manager Web Portal  All installations in one consolidated interface  Aggregate Multiple RTUs in same building  Energy Usage Data and Heat maps  Multi-Zone Scheduling & Status  Consolidated Alerting

Confidential - 18 Installer portal – gives customer overview Installer Web Portal  Consolidated view of all customers  Auto populated from customers  Proactive fault alert to service tech  Prospective issues like insulation problems or duct leakage

Confidential - 19 Account for humidity Smart Comfort and Mean Temperature of Radiation  Adjust the setpoint to compensate for perceived temperature rather than just ambient air temperature Deliver comfort not just temperature control

Confidential - 20 Demand Control Ventilation Enhanced Savings thru best of breed strategies Variable Speed Fan support Occupancy Detection / Auto Away

Confidential - 21 Only condition areas that need it. Prevent over-conditioning of areas Only condition areas when they need it Support for Variable Frequency Drive fan Support for Enthalpy Economizers Support for Demand based Ventilation Active energy cost control through time of day energy usage (pre-cooling and weather forecast considerations) Smart Savings % % % f Internal Study 2 - DOE Report - Energy Savings and Economics of Advanced Control Strategies for Packaged Air-Conditioning Units with Gas Heat f Internal Study All estimates compared to a standard programmable thermostat operating as intended. Savings may be substantially higher if compared to a thermostat set to ‘hold’ or inefficiently programmed.

Confidential - 22 Don’t take our word – empower users User Reports  “Kill” switch on CCU lets the system operate as a ‘dumb’ thermostat  Users can toggle between the ‘dumb’ and ‘smart’ modes  Monthly report lets them visualize the correlation between system operation and comfort/ energy

Confidential - 23 The Market 90% of commercial buildings in the US are light commercial and typically use Constant Volume Packaged Roof Top Units That’s 4,300,000 buildings !

Confidential - 24 Demand Deferral and Load Shift for Utilities Enhanced Demand Response Deferral  Receives forecast Demand Response  Shift compressor firing to maintain comfort during peak utility hours  Expect 20% load shift for 1 hour with no user perception Day Ahead Prices and Forecast Load

Confidential - 25 A fundamental paradigm shift for the light commercial market Better Comfort Faster Installs for huge savings in labour The smartest algorithms and most intuitive interfaces 40 % Savings Payback <3 years. + Average Savings across climate zones. Savings may vary based on climate zone and HVAC equipment capabilities. All estimates are compared to a standard programmable thermostat operating as intended. Savings may be substantially higher if compared to a thermostat set to ‘hold’ or inefficiently programmed.

Deepinder Singh