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Article 6 - Control Equipment <br />Section 1 - Blower Controls. An adjustable automatic fan, or blower, <br />switch shall be placed in the bonnet of the furnace to start and stop the <br />blower at predetermined air temperatures. The location of the switch and the <br />adjustment of the setting shall be made according to the recommendations in the <br />-U- nual, Section H, unless manufacturer's instructions specify otherwise. <br />Section 2 - Summer Switch. Unless automatically controlled, a manual <br />switch for summer operation may be placed in the halL:ay or other accessible <br />location, but must not be placed where it is liable to be turned by mistake. <br />This switch shall be wired so that it operates the blower independent of the <br />bonnet control. <br />Section 3 - Limit Control. A limit control shall be used in conjunction <br />with any automatic temperature control, to prevent overheating of the heater <br />unit. This control shall be so constructed that the temperature of the air in <br />the bonnet cannot exceed about 200 deg. F. The usual setting is about 175 deg. F. <br />Section 4 - Coal, Hand -Fired Furnace. In addition to the blower switch <br />and limit control, a room thermostat shall be used which operates a dapper motor. <br />Damper motors that have current failure protection are preferred types. <br />Section 5 - Coal, Stoker-Fired Furnace. In addition to the blower switch <br />and the limit control, the'controls for a stoker -fired furnace shall consist of a <br />room thermostat, a relay for operating the stoker motor, a barometric draft <br />regulator and some form of hold -fire control. <br />Section 6 -- Oil Fired Furnace. In addition to the blower switch and <br />limit control, the controls for an oil fired furnace shall consist of a room <br />thermostat, and an approved ignition control. <br />Section 7 - Gas Fired Furnace. In addition to the blower switch and <br />limit control, the controls for a gas fired furnace shall consist of a room <br />thermostat, and approved gas valve and pilot safety control. <br />Section 8 - Zone Controls. Zone control equipment consists of 2 or more <br />room thermostats, operating dampers in warm air ducts leading to various portions, <br />or zones, of the building. 1 :anufacturer's instructions shall be folled in the <br />installation zone control equipment. <br />MJW <br />