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Infinity Low Profile Heat Recovery

  • Internal Low Profile HR Units with EC Motors

Overview

    • • 10 standard sizes
    • • airflow up to 4.33 m3/sec
    • • double skinned construction
    • • side access as standard; bottom access, stacked arrangement and external options possible
    • • high density infill for low breakout levels
    • • 20mm Mez frames to all spigots
    • • fitted hangers for drop-rod installation (channel base on models 650, 800, 950 & 1100)
    • • filter access panels fitted with quick release fasteners
    • • backward curved impellor direct driven by low energy EC motor
    • • fan blades statically and dynamically balanced in accordance with ISO 1940/1 and balancing quality G6.3
    • • single phase 230V fan motors are pre-wired to speed controllers and isolator
    • • high efficiency counter-flow heat exchanger typically >80%
    • • face and by-pass damper with fitted open/close motor
    • • electric heater battery or LPHW heating coil
    • • selection of fitted controls available
    • • panel filters to G4 grade, mounted in slide-in channels
    • • supply panel filters to F7 grade
    • • extract panel filters to M5 grade
    • • maximum air temperature 40ºC
    • • manufactured in UK to ISO 9001
    • energy efficient, environmentally friendly, economical EC motors
Products Infinity Low Profile Heat Recovery

Selection Example 1 – Equal Supply and Extract, No Ancillaries

    • Consider the example;
    • • Supply and extract air volume 0.1m3/s @ 125Pa
    • • SFP<1.4W/l/s
    • Would result in;
    • • HRPSL310EC
    • • SFP < 1.2W/l/s (remember, the graphs show per fan, so double any resultant)
    • • PHXE efficiency 85%
    • • Fan speed < 7V ~ 70%
    • Infinity Low Profile Heat Recovery - Selection Example 1 – Equal Supply and Extract, 
No Ancillaries

Selection Example 2 – Uneven Supply and Extract, Ancillaries

    • Consider the example;
    • • Supply air volume 0.1m3/s @ 125Pa
    • • Supply air volume 0.1m3/s @ 125Pa
    • • SFP<1.4W/l/s
    • • LPHW heating coil
    • • 50mm airway supply attenuator
    • Would result in;
    • • Additional 17Pa supply pressure for LPHW coil
    • • Additional 11Pa supply pressure for attenuator • Additional 11Pa supply pressure for attenuator • Additional 11Pa supply pressure for attenuator
    • • Exact heat exchanger efficiencies will have to be checked with the Sales Office
    • • Supply side
    • o 153Pa pressure
    • o SFP < 0.7W/l/s
    • o Fan speed < 8V ~ 80%
    • • Extract side
    • o SFP < 0.7W/l/s
    • o Fan speed < 8V ~ 80%
    • For the uneven fan duty points the SFP for the unit has to be recalculated;
    • • Calculate the motor absorbed power for supply and extract fans
    • o SFP * Airflow = Absorbed Power
    • o Supply = 0.7 * 0.1 = 0.07kW
    • o Extract = 0.7 * 0.12 = 0.084kW
    • • Combine the motor absorbed powers to give total unit absorbed power
    • o 0.07kW + 0.084kW = 0.154kW
    • • Divide by the supply or extract airflow whichever is greater to give unit SFP
    • o 0.154kW / 0.12m3/s = 1.28W/l/s o 0.154kW / 0.12m3/s = 1.28W/l/s

SITE ENGINEERING SERVICES

    • Air Vent Technology, which has long been a manufacturer of all kinds of air handling products, has as experts in this field, has set up a new department for the maintenance, repair and installation of this type of unit. AVT can: • refurbish, maintain and repair ALL your Air Handling Units • install ALL necessary components • remove old/damaged items • flat-pack new components to assist with installation in difficult to access areas • schedule work at your convenience (even weekends) • install bespoke or standard energy efficient AHUs for specific applications • integrated control options • web based monitoring • offer maintenance/service packages Refurbishment by AVT trained personnel can: • save you up to 50% of the cost of new units • be a faster option than installing a new unit • give the benefit of better performance, better filtration and increased efficiency of over 50% • save money on overall running costs • no expensive road closures and crane lifts and, AVT (SES) offers a full installation package PHONE or EMAIL TO SEE WHAT WE CAN DO FOR YOU! Tel: 01264 356415: Email: ses@airventtechnology.co.uk:
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