What am I doing wrong

maybemark

As several of you know, I installed a lochinvar whn 085 and a lochinvar squire 40
Why does my 085 never modulate ( or i never seen it do it.) It go from 0, when satisfied to 100% then gets blocked when it meets in set point or when it meets it's temp. turns off
My 40 squire does modulate. I've seen it start off with 100%, but when it gets closer to the temp. the % goes down, unil it meets the temp that i gave it
thanks
Mark

Gordy

Post your programming parameters.

Is ODR hooked up? Is the reset curve programmed correctly? Boiler sensors installed?

Refresh our memories is it piped direct to the system, or P/S?

ced48

So the boiler must be firing on and off all the time there is a call for heat?

maybemark

Gordy
I know how to get into the service mode, but what peramiters are you looking for?
thank for answering my quote, but I do not know what is ord,
yes it has boiler sensor. it is piped directly to the system, and the 110 volt is wired to the boiler

ced
Yes, when called for heat, it goes to 100%, when it reaches it's temp. , it turns off

smithfan

ord or ODR is the outdoor reset that tells the boiler what it's doing outside. Unless this is hooked up I don't think it will modulate at all.

maybemark

I do have a sensor outside

Gordy

Is the supply sensor installed for the boiler.....on the supply side.

ODR = outdoor reset. Is that sensor installed, and of so is the curve set properly?

Are your rads meeting the set point in your rooms?

maybemark

yes, the supply sensor is installed, it is in my piping, the censor
yes, the outdoor censor is installed. I'm not sure what you mean by curve set. so, if i don't know, this might be the problem, unless the curve set is the ramp, which is turned off, by default.
My house is very comfortable, I changed the location of the thermostat, and I just turned the valve down a little in that room, because my living room and kitchen are not as war as the rest of the house

Gordy

Is the supply sensor selected as the controlling sensor?

maybemark

I'll go look,

maybemark

the system sensor is hooked up to the control sensor

maybemark

or did you mean the programming?
what should it be?

maybemark

I have the control system set to the out

Gordy

Correct that is default setting didn't know if it maybe got changed.

maybemark

I used most all default. I did change some numbers or temp. for chicago winters

Gordy

So,what has been the SWT at?

maybemark

Gordy, I don't know all the abbreviation, I'm sorry what is swt?

maybemark

and where will i look for it on the menu ?

Gordy

Supply water temperature.

What are your settings for Boost.
Ramping.

maybemark

I'll go look
I think ramping default is inactive

Gordy

Maybe this would be easier. Did you program anything? Is everything factory default?

ced48

ODR must not be selected, or modulation would have to come into play.

maybemark

most everything is default, but not everything

maybemark

I see the temp outside on the boiler
I will go look at the low and hi outdoor temps

ced48

How high is your water temperature when the boiler stops firing ?

Gordy

What did you change?

Gordy

Thank you

I believe if it's hooked up correctly it is recognized.

maybemark

I wonder if this is it
I have low out outdoor set -5 default is180 and I have high outside at 64, default is70

maybemark

I don't remember how high the temp is when it shuts off

maybemark

should I change the low and high temp outside to defaults?

maybemark

I have a feeling my low outside temp is wrong, not even in the perimeters

Gordy

You have the ability to do three ODR zones are you using , and programming zone 1? Do you have more than 1 zone?

maybemark

the outdoor temps are set at -5 and 65, the set points are default

maybemark

I only have 1 zone, and then DHW. I am using zone 1 for my heat

maybemark

I was just downstairs, and the stat called for heat, it went right up to 100% flame

Gordy

Let us know what the supply water temp is when boiler shuts down.

ced48

But what are the water temps set at for those outside numbers?

maybemark

when i got there, the boiler was off, the system temp is 81, when i got downstairs

maybemark

out door
low -5 and high 64

Gordy

There are 4 sets of parameters to program.
Outdoor low, and high.
Outdoor set point low, and high.
Outdoor air shut down.
Outdoor air differential.

Read the service manual to get a better understanding of how these work in conjunction with the outdoor reset feature.

I have a feeling your only setting parts of each set of the parameters.

maybemark

Gordy, I did read the manual, but I will go downstairs and see what numbers I put in