Gunning Heating Products
Doreseal – Air Curtain
(Previously
Manufactured By MYSON Eng Co Ltd.)
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The warm air barrier to
cold air draughts
Special Features of Gunning Dorseal Units
* Custom Built - to the specific requirements of each customer.
* Robust Construction - all steel fabricated units for durability and long
life.
* Versatile - units can be supplied for use with hot water or steam.
Engineering Specification
Basic Unit
The basic frame is a welded
fabrication of mild steel angle for maximum rigidity, clad with 16g zinc coated
steel sheet.
Fan Motors
A totally enclosed fan cooled motor
is fitted as standard, wound for 380/415 volts, 3 phase.
Flameproof motors can be supplied if required.
Fan
All fans used are of the centrifugal, double inlet type.
Vertical, and smaller Horizontal Dorseals have a single fan. The larger
Horizontal units for wide doorways incorporate a fan at each end. This ensures
the optimum air pattern over the full width of discharge nozzle.
Fan Drive
This consists of matched Vee pulleys and belts fitted to shafts by taper lock
bushes - the drive is totally enclosed by a steel guard which can be easily
removed for belt adjustment.
Discharge Cowl
Cowls, either straght, offset or right angled are designed to provide a narrow
curtain of high velocity warm air avross the door opening, discharging at
approximately 10 deg towards the outside.
Heater
The heater battery is constructed from the well proven Gunning steel spirally
wound gilled (Finned) tubing and is specifically designed for use with either
water or steam.
All batteries are pressure tested to 500 p.s.i.g. or 35.153 Kg/CM2.
General
After assembly all units are tested for correct output velocity and
performance, then painted with our Gunning blue 'hammer' finish.
Ordering
The following information should be given when requiring a quotation.
- Height and width of door opening.
- Ambient temperature in building.
- Type of heating medium - Water / Steam
- Water flow and reurm temperatures or
Steam pressure.
Final air
temperatures and outlet velocities are determined by Gunning Engineers when
designing to meet customer’s requirements unless otherwise specified.