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Re: Adding Taco ZVC404-EXP-4: Function & Wiring questions
What is the type of heat that you have now? Sounds like hi-temp since you have plans to add radiant.
The radiant floor system will probably need a lower temp then the existing system therefore you will need a mixing valve to bring that water temp down.
Once you add the mixing valve, you will need to add another circulator so you may need that 501 controller.
Dave H.
The radiant floor system will probably need a lower temp then the existing system therefore you will need a mixing valve to bring that water temp down.
Once you add the mixing valve, you will need to add another circulator so you may need that 501 controller.
Dave H.
Re: Adding Taco ZVC404-EXP-4: Function & Wiring questions
You most likely don't need the 501 at all.
Re: 10-15 flushes?
Ummm. No. Another embarrassing rambling rants full of mostly Nonsense by the president . Sometimes you have to
Flush twice. But they still use less water.
Low flow does have issues, but they are necessity in regions with limited fresh water supplies.
In general, they work fairly well. But I’d rather see water billing rates increased is low supply, high demand areas and the market decide to change designs rather than having it forced down our throat.
Flush twice. But they still use less water.
Low flow does have issues, but they are necessity in regions with limited fresh water supplies.
In general, they work fairly well. But I’d rather see water billing rates increased is low supply, high demand areas and the market decide to change designs rather than having it forced down our throat.
Re: Zone Balancing, Boiler Protection, Buffer Piping/Control
Really a ball valve is not an ideal throttling valve. Very little change until you squeeze them way down, then the resolution becomes crappy. A tiny movement can make a big flow change,
I suggest balancing with a ball valve in its mid range, choking down too much makes it hard to get small, accurate balance.
Also too much throttling on a ball valve can cause velocity noise across that sharp edge in the ball. Delta P circulators help with zoned balanced systems as they will modulate to prevent over-pumping.
That being said perhaps the most common balance valve out there is the B&G Circuit Setter, a ball valve. A precision ball
I suggest balancing with a ball valve in its mid range, choking down too much makes it hard to get small, accurate balance.
Also too much throttling on a ball valve can cause velocity noise across that sharp edge in the ball. Delta P circulators help with zoned balanced systems as they will modulate to prevent over-pumping.
That being said perhaps the most common balance valve out there is the B&G Circuit Setter, a ball valve. A precision ball
Re: Conversion from steam to heat pump mini-splits in NYC Co-op
why reinvent the wheel? Fix the steam and live comfortably. Get a NYC steam pro out there like @JohnNY to get your system up and running the way it was designed to
Re: Steam Problems
Since the contractor messed up this obvious detail, you probably need to check everything they did. Steam systems require specific pipe sizes, pitches, and configurations system-wide to work properly. This is probably just one incorrectly done component of many on the system.
Re: Steam Problems
There is always water at the bottom of radiators.
Regarding 2 openings on the same side, I don’t think it is a big problem. Condensate will drain into return and keep water in the radiator at minimum. Keep in mind, steam in the radiator immediately shoots up, and condensate flows down on the walls.
Regarding 2 openings on the same side, I don’t think it is a big problem. Condensate will drain into return and keep water in the radiator at minimum. Keep in mind, steam in the radiator immediately shoots up, and condensate flows down on the walls.
Re: Mystery Loop?
Any time I'm taking apart old pipe, I always try tightening it first. 90% of the time it works. Just get it to move a little to the right and it comes out, no sweat.
Steam speed
Steam speed
Re: Steam Problems
All the ones with condensate lines going up are completely wrong and show the contractor doing the work is clueless. I bet that hammers, wow.
The one that works is pretty obvious why, well obvious to someone who knows.
Tell the landlord every one of those things needs repipe, nothing else will solve the problem.
I also don’t see how the radiators with the side by side connections will ever work on steam. If memory serves most of those (on hot water), had a dip tube to create circulation to the opposite end. To my knowledge this is eliminated once the original valves are changed and I doubt it would work with steam. I’m sure other will chime in on that one to elaborate or correct me.
The one that works is pretty obvious why, well obvious to someone who knows.
Tell the landlord every one of those things needs repipe, nothing else will solve the problem.
I also don’t see how the radiators with the side by side connections will ever work on steam. If memory serves most of those (on hot water), had a dip tube to create circulation to the opposite end. To my knowledge this is eliminated once the original valves are changed and I doubt it would work with steam. I’m sure other will chime in on that one to elaborate or correct me.
