Cyclopedia of heating, plumbing and sanitation; a complete reference work . 90. HOT WATER HEATER AND CONNECTIONS. HEATING ANT) VENTILATN >N 81 It is often desirable to warm a room at times when ventilationis not necessary, as in the case of living rooms during the night, orfor quick warming in the morning. A register and damper for airrotation should be provided : i this case. Fig. 65 an arra ment for this puriose. When the damper is in the position shown;air will be taken from the room above and be warmed over and over;but, by raising the damper, the supply will be taken from outsid
Cyclopedia of heating, plumbing and sanitation; a complete reference work . 90. HOT WATER HEATER AND CONNECTIONS. HEATING ANT) VENTILATN >N 81 It is often desirable to warm a room at times when ventilationis not necessary, as in the case of living rooms during the night, orfor quick warming in the morning. A register and damper for airrotation should be provided : i this case. Fig. 65 an arra ment for this puriose. When the damper is in the position shown;air will be taken from the room above and be warmed over and over;but, by raising the damper, the supply will be taken from care should be taken to make all mixing dampers tight againstair-leakage, else their advantages will be lost. They should workeasily and close tightly against flange- covered with felt. They maybe operated from the rooms above by means of chains passing over
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