Delta T & mod/cons

CC.Rob_11

Is that the circulator's control box next to the pump?

Unknown

I have a typical,

if possible, 3 zone(with H/B ZVs), Mono-Flo system on CIBB. My HL is only about 45-50K, so I chose the TT Solo 60 with a small 30G indirect. But my ΔT is only about 8-10F.
I currently use a 15-58 on speed 1. With my old WM millivolt GV during our ice storm of 98 the system worked fine on gravity.
My design temp is -06F, and my high end "cap" is 126F, velocity noise is non-existent.
So I am well within condensing range.
I like Taco stuff, but do you think a 00-VDT would be of any benefit?
Thoughts?,, C`mon jb, be honest, I wont tell .

Dave

Brad White_191

Why Not?

As you say, Dave, you are getting only 8-10 degrees out of your water. If your design is for the theoretical and ubiquitous 20 degrees, you are moving 2.0 to 2.5 times the water you need to.

Imagine using less than the current, what now, 45 Watts? I do not know what the savings ratio is with a PSC, (maybe linear if not square root and not cube-root), but still, you could drop your RPM down to a trickle and still heat your house.

Not that this is much of a dollar savings but every Loonie counts.

Why not do it and let us know? Cannot hurt and you will always have that spare circulator.

Unknown

Ya`know what Bradford,

I was leaning that way anyway, so I think I`ll try-it.
Whatever KW I can save will just give you guys more anyway, perhaps I`m doing you a favor?

Dave

Brad White_191

I already am spinning a Wilo

so I suppose what you send our way will make it free?

As it is, I am running 4 feet of head and may try lower. All radiators toasty and the circulator megs out at about 16 Watts.

I suppose I will have to hook up our girl-cat S'More (aka "The Supervisor") to a treadmill.

Unknown

Still a die-hard

Taco guy here. As far as electricity goes, I would supply you free old friend, but I`m not the guy(in our case), running the country.
If you find-out before me who is, please let me know will ya?

Dave

Unknown

That would be interesting

since the boiler modulates on delta t. Keep us informed.
TONY

Brad White_191

I love Taco

the products and the people! Just that sometimes there are different worthy products abounding in this hobby I call a career.

And what do you mean you are not running Canada? All this time I was thinking that Harper was calling you for advice, not just on heating, but policy.

Unknown

Problem is Bradford,

he only calls me after he`s done your laundry.
Once you`ve been at him, anything I say goes out the window!

Dave

Rob Blair

What's with the ball valve and boiler drain combo under the air elim? Don't trust the boiler drain seal?

Rob

Brad White_191

That was

a temporary connection point for the expansion tank, Rob. I cold not find a hose-end x 1/2" adapter but had that boiler drain valve handy. I never removed it.

(My expansion tank is connected via a stainless steel braided washing machine hose so I can move it out of the way in tight quarters).

The tank is now connected similarly to the low point of the low loss header.

Good eye, Rob!

TimS

delta T Dave

Are you checking the delta T in high fire ? When the boiler modulates down the Delta T will go down too.

Brad White_203

It is

on the side of the motor, part of the pump. The Wilo Stratos Eco I assume you mean.