Best Of
Re: HVAC Heat Shortcycling
My HVAC came he checked few things here and there and suggest to replace the heater
Another Salesman!
Find a different service provider.
Where are you located?
pecmsg
Re: HVAC Heat Shortcycling
9 flashes does not seem to be on the error code list, so it may be the control board, its not happy with its self. It may be failing solder joints on the board.
109A_5
Re: Clogged Heat Exchanger
Then @pecmsg's advise is not for you. He was referring to the water side as far as adding chemicals.
Let me read the manual to see if there is a maintenance procedure that will work for you.
Re: Lochinvar NKC150N - DHW High Temp Issue
Yeah, that "someone" was me. Check the back of your low voltage circuit board like I described above. If that looks OK and if you stay connected with us, we'll move on to the next thing until we figure it out. That's the way it works here.
Re: Monoflow system does not heat well
I agree with @Ironman.
I had an issue with my own house LOL.
Had an old boiler with a Monoflo system 1 zone. The system had a Taco 110. When that failed I put in an 007 and it worked fine.
When I sold the house, I put in a new boiler and an indirect used the same 007 but now had (2) 1" zone valves, indirect and heat. I had put in Honeywell zone valves with a Cv of around 5 I think.
Heating load was only 50 K with a 1 1/4 Monoflo loop. Sounded like a low pressure drop to me. On DHW it was ok with the indirect near the boiler.
On heat the 007 just wouldn't do the job the water was real sluggish getting around the main and this was without the indirect calling.
I took the Honeywell's out and put in 1" Taco valve I think the Cv was 7.5 or 8 and that solved the problem. Maybe I could have swapped to a larger circ for less $$$?
Re: How well is my heating working at lower water temps?
Initial glance on that graph, you can go down on the supply temp if you so desired. Even at the coldest part of the morning (6F?), your system not only maintains but brings up the temp. It doesn't seem to be struggling at all in that 24 hr period. Lowering the supply temp will minimize the cycling frequency but won't necessarily improve your overall energy efficiency as those air handlers can use a good amount of energy for delivery. I've seen many at 500 watts or more. Do you know how much your's pulls?
Do you know your btu/h output during that long 0400 run?
What design temp you are targeting?
This is from ecobee Thermostat? What equipment settings do you have it set for?
bjohnhy
Re: How well is my heating working at lower water temps?
it’s hard to tell the time duration of the blocks? Is it on setback thermostats? It looks like a long non stop run starting at 4:00 AM
Knowing the output of the air handlers compared to the heatload might be useful.
hot_rod
Re: Need best wireless thermostat options without WiFi
They make wire tracers that will follow the wire in the wall. They even make them that will follow a wire underground, but those get a little spendy. A commercial electrician might have the proper tool.
I've used a phone guy's tone set to follow wires in the past, but those are made for unenergized wires, even 24 VAC might let the smoke out. Might try it on the W (the one that is NOT 24 VAC to ground). You should be able to get a cheap tone set from your local big box store.
ratio
Re: Need best wireless thermostat options without WiFi
I know this is only a temporary fix but you could always just lay some new low voltage ther wires around the house and down to the boiler if thats what it takes to get it working while you establish a more permanent route to run the wires or set up a wireless solution. I personally prefer hardwire since it's usually easier to troubleshoot (just not in your current case because someone else ran the wires :) ) Look for a pipe or vent that goes from upstairs to downstairs to just temporarily run the lines, you'll save your sanity by not trying to unthink someone else's work.
PeteA
Re: Leaking new vents?
Is the boiler piped properly and producing dry steam? Bi-metal type vents don't handle water as well as others, and often collect and retain droplets, fail to reach closing temperature causing spitting sounds when met with wet steam (or water).
You might try experimenting with a quality sylphon bellows - type vent on a troublesome radiator and see if it's quieter. You'll find that each vent manufacturer's product behaves differently on different systems; some more forgiving of varying steam characteristics.
