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Re: SOLVED: Flame rollout tripped on Smith GB200 (2004)
Heat exchanger does not look terrible. Could probably use a good brushing in the passageways. My old boiler looked way worse. The white stuff could be from a combination of combustion by product, cooked mineral deposits from condensation, dust from the house etc. I posted pictures of my boilers heat exchanger a few years ago.
Re: Two quotes for combi boilers for radiant and DHW
There is a calculation for the square inches of air that you need based on the burner sizes.
Between the fan opening and the lower opening it looks like it has been plenty.
If it is easy, pull the air from outside the room, directly to the boiler. I’ll bet that old flue will accommodate exhaust and intake air with a concentric kit. It may only be a. 2 or 3” pvc vent. Much easier to deal with than grills on the door.
I much prefer exhaust out the roof. Your neighbors may too.
Close lot lines can be a non starter for heat pumps, although some are brands pretty quiet.
A heat pump can give you heat, hot water, and chilled water to do some cooling.
Between the fan opening and the lower opening it looks like it has been plenty.
If it is easy, pull the air from outside the room, directly to the boiler. I’ll bet that old flue will accommodate exhaust and intake air with a concentric kit. It may only be a. 2 or 3” pvc vent. Much easier to deal with than grills on the door.
I much prefer exhaust out the roof. Your neighbors may too.
Close lot lines can be a non starter for heat pumps, although some are brands pretty quiet.
A heat pump can give you heat, hot water, and chilled water to do some cooling.
hot_rod
1
Re: Hoffman 2 Vents?
@PMJ and @SteamCoffee I found this article, https://www.heatinghelp.com/assets/documents/112.pdf
The article is from 1941, read the sections about one-pipe vapor and one-pipe intermittent vapor.
The article is from 1941, read the sections about one-pipe vapor and one-pipe intermittent vapor.
Mark N
1
Re: Hand held ultrasonic flow meter? Water differential pressure gauges/ Hydronic manometers?
Testo 550 are rated for r-718, probably most others are also. get a selection of different gauges depending on the pressures.Some time ago, I came across software to design & print a new face for a gauge: http://tonnesoftware.com/meter2.html. It's actually pretty neat, although the UI is somewhat awkward.
Probably find these cheap at pawn shops, CL, FB marketplace, e-bay, etc.
From HVAC-talk
ratio
1
Re: Corroded drain valve and pinhole in return pipe
I would not use a plastic drain on a steam boiler. Your patch will probably hold just keep an eye on it and make sure the low water cutoff on the boiler works.
Re: Radiant floor setpoint
I run all of mine at 100* to start, and adjust from there if necessary. Most end up being just fine with 100* on a design day, but some are lower and some higher. My shop at home runs about 85* at design of -30F outdoor but I only keep it 65 inside
GroundUp
2
Re: Radiant floor setpoint
I had a radiant heat in the Concrete Slab Addition system in my previous home, I also used a condensing boiler. I got plenty of heat using a 110°F water temperature with a 10°∆T so the average water temperature was about 105°F. The remainder of the home was a staple up using aluminum transfer plates. That 110° water was about the highest I wanted to put on those Hardwood Floors.
If you do not have Hardwood floors to worry about, then I would start at 120° and go down from there. If you get the temperature to over run the thermostat setting by more that 3°F then lower the boiler temperature by 5° and see how that works for a few days. You need to let it operate for at least 3 days before you try another temperature change. It can take that long for the Slab to change temperature and see if it is any better.
It may take 24 hours for the 120° boiler water temperature to show up as a room temperature change when you have a large mass like a concrete slab.
If you do not have Hardwood floors to worry about, then I would start at 120° and go down from there. If you get the temperature to over run the thermostat setting by more that 3°F then lower the boiler temperature by 5° and see how that works for a few days. You need to let it operate for at least 3 days before you try another temperature change. It can take that long for the Slab to change temperature and see if it is any better.
It may take 24 hours for the 120° boiler water temperature to show up as a room temperature change when you have a large mass like a concrete slab.
Re: Random lockouts on Wayne burner
Possible bad HX. What is the oil line installation like . Inside tank, outside tank gravity feed or overhead lines? etc etc
Re: Random lockouts on Wayne burner
The MSR is a 3450 retention head burner so it should make it over 10.5% CO2.
Check that over fire draft with blower fan off, then on with burner running. Rule out the heat exchanger.
Is there oil on the head and nozzle after lockout? Could be a weak ignitor.
Check that over fire draft with blower fan off, then on with burner running. Rule out the heat exchanger.
Is there oil on the head and nozzle after lockout? Could be a weak ignitor.
HVACNUT
1