New Leyland Buses Have Heaters
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A COMBINED ventilating and heat ing system is being fitted to the bus bodies that are now being built by Leyland Motors, Ltd. The heater element, which operates from the engine watercirculation system, is mounted under the canopy on the near side of the cab. It is connected to both the saloons by short ducts built on the bodywork.
A Clayton Dewandre L.6-type heater is connected by a feed-andreturn pipe to the rdiator by-pass of the engine thermostat. Hot water, controlled by a cock in the driver's cab, circulates around the element, 'and the heat radiating from it is swept through the ducts by a large electric fan. If the water supply be shut off, the fan can be used to circulate fresh air at atmospheric pressure throutzh the ducts to the interior of the bus.
The ducts arc connected to two AnemostaLs in the front bulkhead of the lower saloon. These diffuse the air and reduce its velocity to pre vent draughts. The duct for the upper saloon leads to an expansion chamber, which discharges air at floor level under the front seats. As one of the ducts passes through the cab, it can be coupled to a windscreen defrosting apparatus or used for cab heating.
In the present design, the circulating unit is visible from outside the vehicle, but when the material-supply position eases, it will be enclosed The casing will prevent heat losses from the element, as well as improving the appearance of the vehicle.