As one of the UK's leading chemist chains, Day Lewis Ltd. is involved in retail and wholesale pharmaceutical business in UK.
Colt provided a complete heating scheme design based on an internal temperature of 18°C against an external of -4°C. Consequently, the system was designed on the basis of providing a total heat input of 343 kW to achieve these conditions.
Due to the layout of the area, which is partly full height and partly has a mezzanine floor, Colt provided a total of 9 Convair suspended gas-fired warm air heaters. Two of these units provide heated air to the area underneath the mezzanine floor via ductwork. All heaters include individual control via thermostat and timer.
In addition, Colt installed a Wastemaster system which returns warm air to low level for heat exchange before it is allowed to leak to the atmosphere. This system reduces the heat input by up to 15-30%, therefore saving heating costs.