Heating Help

splitting a zone to add indirect heater

@ December 24, 2011 9:43 AM in splitting a zone to add indirect heater

I have a client who recently added a huge tub and multi -outlet shower.
Here is the situation. The home is on slab with the boiler approximately eighty feet away from the bathroom. The boiler piping for this area of the home is underground. Just outside the bathroom, in a small area beneath the floor, is the air handler for the master bedroom/ bath. My question is, would it be possible to split that zone to add an additional indirect heater dedicated to the master bath? I was thinking of adding zone valves to separate the two units and possibly, if necessary, increase the size of the pump at the boiler. If that were at all possible, I would than have the challenge of controlling the two units and prioritizing the hot water demand.
Currently in the space below the floor we have ample piping to connect to the existing  1  1/4" boiler supply and return to the new indirect heater. My concern is the size of the piping and the wiring and placement of zone valves and control.
This is one of two ways I can think of to increase the hot water supply. The other is to change out the current 40 gallon Amtrol unit and replace with a bigger Weil McLain Smart indirect.
Finally I would like to add the boiler is roughly 75% glycol due to the underground piping. Any feedback would be helpful.

Hot water baseboard below NOWL

@ December 12, 2010 3:18 PM in Hot water baseboard below NOWL

I have a client with a steam boiler and of course steam radiators on a one pipe system with gravity returns at the end of the mains which run below the slab and back to boiler via Hartford loop.
Has anyone out there ever taken a return line and incorporated a section of commercial fin tube to heat a space? My thinking is that the water is hot, returning to the boiler, so it doesn't  care how it gets there as long as it's inside a pipe. Please let me also mention we are making hot water with an internal coil. I figured if we're not making steam in the off season, there should not be a problem with heating that section of baseboard while the boiler runs on hot water demand.
Feedback please........

Programming Honeywell 7248C

@ April 20, 2010 7:53 AM in Programming Honeywell 7248C

Just installed a Weil McClain UO-4 boiler with electronic aquastat 7248C. The boiler is supplying heat  to two baseboard zones via one pump and two zone valves,  and one Plus 60 indirect fired water heater also on separate pump.
I am trying to adjust the low limit on the control but it is not allowing me to program beyond the high limit. While scrolling through the menu it will not display anything but boiler temp, Fahrenheit,  high limit, and two separate thermostat settings. Therefore the pump for the indirect will run constantly while the boiler remains at 110 degrees. The boiler does come on when there is a call for heat and runs up to high limit. Could there be something wrong related to  the ZR terminal; possibly the electrician wired into the control from the indirect incorrectly.
Please help!!

@ January 22, 2004 6:07 PM in steam condensate

Mad Dog, yes the units are on the same floor. Trouble is there is no way to go up and over the ceiling to drop down into the steam room.The walls are all closed up and i am working with some of the existing piping.

Steam condensate

@ January 22, 2004 5:35 PM in steam condensate

I have one for the avid steam head. Here's the deal; I have been recently been called upon by a health club in dire need of installing two commercial steam generators. The only problem that hasn't been worked out is the steam supply piping. The only way to get from the steam source to the steam room is to drop down out of the unit through the floor across the ceiling about forty feet and up into the steam room. My biggest concern is what to do with the condensate build up. Please Help!!!!!

Constant circulation

@ October 10, 2002 7:38 PM in Constant circulation

Hi Dan,I had a recent conversation with a fellow member of the trade regarding constant circulation utilizing a constant but lower temperature. This method of heating came into play after I had mentioned the awful heat swing that occurs in my own home.Here's the situation. I,ve got old style recessed cast iron radiators on the first floor zone and they always overshoot the setpoint on the t-stat; at least by three degrees on really cold days. Yes, I have checked the heat anticipator setting. He mentioned installing a two stage t-stat and a mixing valve. Hot water is produced by the boiler and circulated into an aquabooster requiring the boiler to maintain temperature. Given this, what would you suggest as an efficient setup incorperating constant circulation? (controls, mixing valve, etc.)