MAKE-UP WATER FEEDER Series 25-A

for Boiler Receiver Tanks

Float operated feeder used to supply make up water to condensate receiving tanks automati-

cally as needed. Mounted to the tank by means of 1” equalizing lines and feeds water to the tank through a separate line. Water inlet and outlet connections are 3/4”. Large built-in strainer protects valve from dirt and contaminant’s. Maximum body pressure 35 psi; Maximum water supply pressure 100 psi.

CAT. NO. MFG. NO. DESCRIPTION 3W259

126800 EACH 25-A, Make-Up Water Feeder $1,323.27 ARE “HARTFORD LOOPS” REQUIRED ON STEAM BOILERS?

MECHANICAL WATER FEEDERS Series 47

for Steam & Hot Water Boilers with Cold Water Feed

For closed system steam boilers up to 5,000 sq. ft. capacity. Continuous maintenance of minimum safe water level, independent of electrical service. Can be used with mechani-

cal or electronic low water cut-off. Features proportional feed action, 1/2” quick hook-up fittings, quick change replaceable car- tridge valve and strainer, quiet durable operation and isolated feed valve that minimizes lime and scale build-up. Maximum water supply pressure 150 psi; Maximum boiler pressure 25 psi. Water feed piping connections are 1/2” FPT. Model No. 47 can be field upgraded with a 3W264 switch to add automatic low water cut-off function or 3W265 switch to add manual reset low water cut-off function.

CAT. NO. MFG. NO. DESCRIPTION 3W200 3W021 3W258 3W264 3W265

132700 132800 133700 110000 110100

EACH

47, Mechanical Water Feeder 47 w/No. 2 Switch

247, Boiler Water Feeder w/1” conn. 2, Cut-Off and Alarm Switch, 115v 2M, Cut-Off and Alarm Switch, 115v

$949.13

$1,036.90 $897.39 $184.32 $184.32

When installing a steam boiler for residential heating, a “Hartford Loop” should be installed on the return to the boiler. Failure to install a “Hartford Loop” will result in a flooded return with water levels in the return piping well above the water levels in the boiler. This flooded return is caused by the pressure generated by the steam in the steam cavity, pushing the water back out of the water cavity and into the return piping system. The movement of the water out of the boiler water cavity will cause the low water cutoff to shut down the burner and activate the water feeder. The end result will be a short cycling burner and inevitably a flooded boiler incapable of producing steam. Installation of a “Hart- ford Loop” will equalize the level of the return water and the boiler cavity water, enabling the boiler to maintain the pressure difference between the steam and the water cavity. . Maintaining these water levels and pressure differential is imperative to a correctly functioning steam heating boiler.

Should you need piping diagrams depicting the “Hartford Loop”, please contact your local R.E.Michel Sales Rep. or Branch location.

Visit us at www.remichel.com

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HYDRONIC & STEAM SYSTEMS