Info needed to set up hot water circ off steam boiler

DanHolohan

<a href="http://www.heatinghelp.com/heating_howcome6.cfm">Condensate zone</a>

It pays to wander off the Wall.

Bill_57

circulating hot water from steam boiler

Date: August 02, 2005 12:50 PM
Author: Bill (billsails@hotmail.com)
Subject: circulating hot water from steam boiler

I have a steam boiler in the basement & a seperate hot water heater for domestic hot water . I want to tap into the hot water in the boiler( Crown Steam Boiler Rated172,000btu) by installing a 1/17 hsp circulator pump to pump hot water from reservoir in boiler into 3- 6' radiators to heat the basement apt ( either low profile cast iron or baseboard ). Can I use flexible hose ( rated180 degree) to transport hot water to radiators & back to boiler ,single loop ?What size dia. hose will be best ?. I plan to install a low voltage thermostat in basement apt to control the temp there. What type of relay(s) must I install inorder to have the boiler go on & the pump to go on to circulate hot water to radiators when the thermostat calls for heat ? When I set the pump system up ,which direction do I pump the water (into the boiler ?away towards radiators? ) do I need an expansion tank? appreciate answers to my Questions , thanks , Bill