HVAC
Keeping commercial heating costs under control
In today’s energy-conscious world, more and more owners of commercial buildings, property managers and building maintenance staff are looking for ways to reduce energy costs. To meet stringent requirements and ensure that buildings operate as effectively and efficiently as possible, heating controls must be capable of improving internal comfort conditions while also delivering genuine savings in fuel costs. Ideally, they should also be straightforward and secure to use, with a wide range of energy-optimising features. Simon Garratt, Marketing Manager at Nortek Global HVAC UK, highlights the key benefits of installing an intelligent energy management control system to achieve higher efficiencies and support the development of effective heating and ventilation (HVAC) systems.
to large multi-zone applications requiring centralised control. They are compatible with radiant tube, warm air and many other types of heating system, including ducted installations. Since the control unit enables the heating system to be networked across multiple zones, varying work patterns and operational temperature needs within the same building can be accommodated, reinforcing the system’s energy-saving capabilities. Installation is quick and easy using a wall mounting template and end users will find controllers simple to operate since programming is carried out using intuitive on-screen instructions, negating the requirement for a manual.
C 24 hvac
ontrollers provide cost- effective energy management for everything from small single heater installations
Functionality delivers real flexibility Energy management controllers available from leading manufacturers are suitable for managing fully modulating heating and cooling and are purpose-designed with exceptional functionality as a priority. For example, multiple control options enable the unit to be configured to offer 7-day programming, provide ventilation-only operation or operate several on-off periods per day. Easy-set holiday and overtime modes are also available. Standard features designed to enhance the operation of both the building’s heating system and include single stage heating/cooling, three stage cooling or ventilation and volt free remote on/off control/BMS override.
Options for improved safety and security
Password-protected operation prevents unauthorised access and tampering with the controller, while an override facility ensures compatibility with the building management system (BMS). As a result, the BMS can control any number of SmartCom units to deliver enhanced energy- management and reduce costs. For added safety and security, energy management systems should feature 7-day battery back-up plus lock- out modes, such as flame failure and remote burner lock-out and zonal lock out indication and reset functions.
Advanced systems deliver tighter control
An integral air temperature sensor is
common to most energy management units, but
more advanced systems, such as Nortek’s SmartCom, offer optional remote sensors – including radiant black bulb, warm air, duct and outdoor sensors – for enhanced control. When seeking an energy management solution, it is advisable to choose a controller that qualifies for the Energy Technology List (or Energy Technology Product List, ETPL). This is the government-managed list of energy- saving and energy-efficient products and is part of the Enhanced Capital Allowance (ECA) tax scheme for businesses. Other features worthy of consideration include multi/split zone capabilities (for radiant heating applications), high/ low heat two-stage heating (for warm air heating applications) and dual temperature settings for sports/non- sports facility comfort. Meanwhile, a self-adapting optimised start-up capability ensures increased comfort and further boosts cost savings. Despite the reduction in energy prices in recent months and an increasing focus on how to reduce CO2
emissions,
building owners and operators remain keen to reduce fuel usage to achieve lower energy bills. An intelligent energy management controller satisfies the demand for more efficient and effective heating control, while also complementing the development of high performance gas- fired heating systems.
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Building & Facilities Management – January 2016
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