Building and Engineering Catalog 1921 Edition . FJTjXjtsV^^ Detail No. 6.—Showing typical boiler Connections for DunhamReturn System, using Dunham Return Trap c« •*. 1 -•*- S v tin Dunham Return System using Dunham Inlet \alves connected at top of hot water tvpcradiators and Dunham Radiator Traps at return end of radi-ators and Dunham Return Trap or kuuni Pump forreleasing air and returning water to the boiler: each and allto be installed in accordance with instructions and standarddetail drawings to be supplied by the C. A. Dunham Co. Ltd. Dunham Bulletin No. 109 for full description andappli


Building and Engineering Catalog 1921 Edition . FJTjXjtsV^^ Detail No. 6.—Showing typical boiler Connections for DunhamReturn System, using Dunham Return Trap c« •*. 1 -•*- S v tin Dunham Return System using Dunham Inlet \alves connected at top of hot water tvpcradiators and Dunham Radiator Traps at return end of radi-ators and Dunham Return Trap or kuuni Pump forreleasing air and returning water to the boiler: each and allto be installed in accordance with instructions and standarddetail drawings to be supplied by the C. A. Dunham Co. Ltd. Dunham Bulletin No. 109 for full description andapplication. K. I ,-jr **? ^* v JTir* DrrAU. No. 7.—Showing typical Boiler Connection* lor DunhamReturn System, using Condensation Pump. CONTINUED ON IfEIT PAGI ING SYSTEMS AND SPECIALTIES 1 s: i C. A. DUNHAM COMPANY LIMITED DUNHAM RETURNPUMP. )UNHAMACUUM YSTEM. :ow to PKCIFY. The function of the Dunham Return Pump is the automatic return of condensate from the heating system to the hoih r The units are simple and fool-proof and embody best possible materialand workmanship. They consist of a centrifugal pump direct connected toelectric motor, mounted on cast iron base, with receiver equipped with floatcontrolled switch for ?stopping and ?starting the motor. The switch is enclosed, of sliding contact type, and controls motorselected for this particular service. It is approved by the Ontario HvdroPower Commission. Laborator\ License No 361. Standard units areequipped with motors 110-220 volts, single phase, alternating current Motorsfor other current can be supplied to conform to specificat


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