ECA Listed Scroll and Non ECA Hermetic delivering potential energy savings of 23% with F-Gas friendly low noise operation.
Hubbard Products Commercial Refrigeration Division has launched an all-new 41 model range of ultra-efficient,F-Gas friendly packaged condensing units. The HZS Zenith range of Scroll Packaged Condensing Units and HZH Zenith Hermetic Packaged Condensing Units will be available from the 4th January 2010 and will replace the Hubbard HCP and HCPS ranges.

Low noise with average 23% greater energy efficiency through improved design features with 0% Interest Carbon Trust Loans and tax efficient Enhanced Capital Allowances on Scroll models.

The new product range offers Scroll (HZS) and Hermetic (HZH) options for both medium temperature and low temperature operation, with a future range of EVI scroll low temperature machines to follow shortly. The range includes the new Summit ZB compressors in the larger HT scroll units providing improved efficiency and considerable weight reduction.

The new Hubbard HZ Zenith Ranges are designed around three case sizes (A, B & C) providing the most efficient combination of condenser coil and low noise fans using special blade geometry. Case A (mm 1013L x 684H x 485D) for capacities up to 3.5 kW, Case B (mm 1150L x 787H x 493D), for capacities from 3.5 to 6 kW and Case C (mm 1368L x 989H x 622D) for capacities from 6 to 13.5 kW.

Superior component specification delivers maximum efficiency and ensures F-Gas regulation compliance from design, through manufacture to installation, commissioning, service and maintenance. The new Hubbard Zenith Ranges are designed to prevent leaks and simplify the future testing of system integrity under current legislation requirements.

The Hubbard Zenith Range specification includes as standard:
· Fans with 6 or 8 pole fan motors
· Sound attenuated compressor compartment
· 2 and 3 row straight and formed coils with Thermoguard anti-corrosive finish
· Coil and receiver design to provide a fully draining coil in operation
· No spindle isolation valves to prevent valve stem leakage, Ball valves utilised throughout
· Circuit design to minimise potential leakage, F-gas friendly.
· Case-work utilises organically coated steel reducing the use of non recyclable materials
· 2 years parts warranty with planned maintenance contract on HZS Scroll units and 1 year on HZH Hermetic units
· Preset PCB Control System - Minimal setup
· PEECTM - Performance Enhancing Electronic Control Mode - Patented* control program, continually matches condensing temperature in relation to suction pressure for significant energy savings and low noise fan speed control
· All units are high ambient operable as standard
· PED certified and CE certificated
· Compressors selected from the leading manufacturers in the industry
Options
· Wall mounting brackets
· Anti-Vandal Security Cages
· Oil separators for extended pipe runs
· PEPITM Portable Electronic Pressure Indicator

The new Hubbard Zenith Range features a unique* electronic control board designed for refrigeration units providing two separate control facilities - 'Standard' or 'PEECTM' mode which delivers potential energy savings of 23%.
*Patent applied for.

Standard Control Mode
Standard control mode maintains a pre-set condensing condition, similar to a 'fan speed control' providing stable pressure and reduced noise at low load conditions, such as during evening and night time operation, unlike traditional controllers which still allow full speed operation leading to ramp noise at load, for instance after defrost, the new Hubbard Zenith Ranges utilise a switchable ambient probe combined with a unique algorithm to limit the maximum speed of the fan in relation to the ambient condition therefore limiting the ramp affect making it ideal for noise sensitive sites.

PEECTM Control Mode
PEECTM Performance Enhanced Electronic Control* operation provides the system with a sophisticated fan speed control which allows the unit to operate when achievable at the optimum condensing temperature in relation to its evaporating temperature without jeopardizing liquid quality to the expansion valve.
· Pre-configured parameters for pump-down operation, reduce set up time on site
· In built compressor protection to maximise component life expectancy, including anti-cycle and phase rotation sensing
· The control board has the facility to connect to external BMS / monitoring systems via a set of volt free NO/NC contacts to register a fault status such as HP failure or phase rotation

Example:

A traditional 3.75m refrigerated dairy case with a nominal capacity of 5.28 kW and incorporating a standard Scroll unit with F Speed Control restricted to a 350C condensing minimum would incur an energy cost of £896.00 per annum.

The same refrigeration unit fitted with a Hubbard HZS Zenith Scroll unit operating in PEEC mode would incur an energy cost of just £654.00 per annum.

Energy saving 27%
The figures are based on the following assumptions, and are for guidance only
Night blinds, with an efficiency reduction of 40% in use for 8 hours.
Energy costs of 9p/kWh peak, 6p/kWh off peak.
UK mean temperatures.
Cabinet data to ISO class 3.
Costs do not include cabinet energy consumption.

Dougie Stoddart, Commercial Director of Hubbard Products says: '2010 sees the culmination of over extensive development and testing in the launch of our new range of packaged units. In 2001, Hubbard's HCP and HCPS ranges were one of the first truly packaged refrigeration solutions, now the Hubbard Zenith Range series of equipment will deliver Hubbard's commitment to providing the customer with not only a cost effective refrigeration solution but also an energy efficient unit with the capacity to reduce energy costs significantly in operation'.