Search: Posts Made By: mtmtntop
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Replies: 10
Views: 1,412
Posted By mtmtntop

got it. and yes, that's all the way i see it. ...

got it. and yes, that's all the way i see it. thanks. check your pm
Replies: 10
Views: 1,412
Posted By mtmtntop

ok. i think your table might have had entries in...

ok. i think your table might have had entries in it but they don't show on this site. i did not try jumping the blue to yellow, thought i would check back first, and glad i did.

so if orange...
Replies: 10
Views: 1,412
Posted By mtmtntop

time for dinner here also. so we are working...

time for dinner here also.
so we are working off the same page, so to speak: here is the webpage of the document i found on-line that shows the plug- mine is 4 pin:
Subject: Effikal & Johnson...
Replies: 10
Views: 1,412
Posted By mtmtntop

sorry, that was the serial #. here is the model...

sorry, that was the serial #. here is the model # RVGP-KSF, and there is another line under it PVGP-KS____-BKF.. nothing in the blank space. i forgot to mention in the original post that i did try...
Replies: 10
Views: 1,412
Posted By mtmtntop

replaced obsolete aquatat; where to hook up damper vent motor?

hi. i've been absent from this forum for awhile as everything in my solar /boiler array has been working flawlessly. until a few days ago. i was looking for a possible leak in the boiler and...
Replies: 3
Views: 1,177
Posted By mtmtntop

the general idea is this. i want to use heated...

the general idea is this. i want to use heated glycol from a solar array in either of two existing boiler loops. I was thinking out loud in the first post trying to figure out how to go about it. ...
Replies: 3
Views: 1,177
Posted By mtmtntop

another solar thermal project question MORE INFO ADDED

i'm back for more of your insight and advice. a quick history. In my house, i have a conventional hot water heat/gas boiler setup. I have a completely independent boiler that shares a boiler loop...
Replies: 46
Views: 2,974
Posted By mtmtntop

sorry, i should have pointed that out. just an...

sorry, i should have pointed that out. just an update. I was originally trying to figure out the flow rate to see if i could run both pumps at slow speed to increase the temp and slow the rate of...
Replies: 46
Views: 2,974
Posted By mtmtntop

update

while researching something else, i came across this website which i had seen long ago, but of course, forgot about it.
Pump and Pipe Sizing for a Solar Water or Space Heating System...
Replies: 46
Views: 2,974
Posted By mtmtntop

i need to get my terms right but your diagram...

i need to get my terms right but your diagram helped me tremendously. i am referring to the system curve that you plotted for me and overlaid it onto the 15 58 pump curve. ( i think those are the...
Replies: 46
Views: 2,974
Posted By mtmtntop

i got it now. you solve for flow at different...

i got it now. you solve for flow at different head values to make the curve for the pump. i have to brush up on my math skills. i haven't tried to solve an equation like that in years. thanks for...
Replies: 46
Views: 2,974
Posted By mtmtntop

trying to answer the questions asked

yeah, in my original post i did not know the difference between static lift and , i guess what you would call head, or resistance. i get it now. or at least i think i do.

i guess where i am...
Replies: 46
Views: 2,974
Posted By mtmtntop

the min /max flow through 1/2" pex is 1.2/2.3...

the min /max flow through 1/2" pex is 1.2/2.3 gpm. i just assumed 1.5 gpm to be able to use taco's table (see link in earlier post) My cacls were all done using that taco publication.

according...
Replies: 46
Views: 2,974
Posted By mtmtntop

two loops. actually one was 125' and the other...

two loops. actually one was 125' and the other was 175 by the way it laid out in the floor- bay window area. but the two loop come from a single 3/4 line /zone valve then are split via a T and then...
Replies: 46
Views: 2,974
Posted By mtmtntop

back with calcs

i have several zones in this system, and as it turns out there is no problem with the solar loop. (pump specs vs equivalent length of pipe) I also thought my grundphos 15-58 ran anywhere between the...
Replies: 46
Views: 2,974
Posted By mtmtntop

reading these answers, i see a few things. ...

reading these answers, i see a few things. first, i was measuring static head (height) ,not pump head ( moving liquid past resistance) anyway i googled till i found this piece of instruction:...
Replies: 46
Views: 2,974
Posted By mtmtntop

first, i think i may have confused the issue. ...

first, i think i may have confused the issue. this is a 75 evacuated tube array, no flat panels.

here are the different pipe configurations of only the solar loop, through the boiler loop and...
Replies: 46
Views: 2,974
Posted By mtmtntop

i have heard about those programs. i will...

i have heard about those programs. i will measure everything tomorrow. do you want me to post it here?
Replies: 46
Views: 2,974
Posted By mtmtntop

the array is not a drain back system. either the...

the array is not a drain back system. either the boiler or the array can be running, not both. you are right about circulator vs pump, but the performance curves for a pump show the lift and gpm. ...
Replies: 46
Views: 2,974
Posted By mtmtntop

trying to determine flow rate

hello; i am trying to determine two things on a currently installed solar array that shares a boiler loop. There are 5 zones on this system and there is a grundfos 15-58 installed in the bottom of...
Replies: 6
Views: 1,457
Posted By mtmtntop

it has a standing pilot and is protected by a...

it has a standing pilot and is protected by a thermocouple. from what you have told me, and from what i have read, beginning next year all boilers will be required to be electronic ignition. I...
Replies: 6
Views: 1,457
Posted By mtmtntop

give me a little more information. right now, i...

give me a little more information. right now, i can pull the power wire going to the gas valve, and the burner shuts off, but the pump still runs. If i want the boiler to fire, i just reattach the...
Replies: 6
Views: 1,457
Posted By mtmtntop

i have to think about doing it that way. what...

i have to think about doing it that way. what strikes me right away is stopping the call for heat will close the zone valve. The whole idea of handing off from boiler to solar array would be to...
Replies: 6
Views: 1,457
Posted By mtmtntop

turning off power to boiler gas valve

hello. after an extended absence, i am back for some more valuable advice. i've had alot of questions in the past you have helped with. i have an evacuatated tube solar array that shares a boiler...
Replies: 11
Views: 4,086
Posted By mtmtntop

question for trooper

be patient with me. everything i know about this stuff i learned on this forum. i also have been wondering about having the circulator run after the boiler stops, because it seems a waste to have...
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