Generac Install

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ptonsparky

ptonsparky

Tom
Location
NE (9.06 miles @5.9 Degrees from Winged Horses)
Occupation
EC - retired
Do you that install Generacs, confirm the gas pressures at start up?
We usually installed propane lines and regulators in the past, so we checked.
Last install, the Tank provider installed lines & regulator. The unit started and ran fine during initial test/start, but a few weeks later when the power dropped, it displayed an Over crank error. Help cleared the error and it started right up both manual and auto. It failed the weekly test with the same error later.
Tank provider checked upon our request and corrected the 10.5 lbs vs the 11 to 15 it requires.
 
ptonsparky said:
Do you that install Generacs, confirm the gas pressures at start up?
We usually installed propane lines and regulators in the past, so we checked.
Last install, the Tank provider installed lines & regulator. The unit started and ran fine during initial test/start, but a few weeks later when the power dropped, it displayed an Over crank error. Help cleared the error and it started right up both manual and auto. It failed the weekly test with the same error later.
Tank provider checked upon our request and corrected the 10.5 lbs vs the 11 to 15 it requires.
Click to expand...
11 to 15 PSI or inches of water column?

Does it fail to cold start or does it "freeze up" after running a while and then you have low pressure? If so something undersized for the flow rate?
 
kwired said:
11 to 15 PSI or inches of water column?

Does it fail to cold start or does it "freeze up" after running a while and then you have low pressure? If so something undersized for the flow rate?
Click to expand...
Gas pressure is usually measured in inches water column, 7" water column is approx 1/4 pound of pressure, worked on a paint booth with a 1.1 million BTW heater, pilot light was 30K BTU, that needed 28" WC, (1LB pressure) which is considered high pressure gas. Glad I did not pay the gas bill.
 
norcal said:
Gas pressure is usually measured in inches water column, 7" water column is approx 1/4 pound of pressure, worked on a paint booth with a 1.1 million BTW heater, pilot light was 30K BTU, that needed 28" WC, (1LB pressure) which is considered high pressure gas. Glad I did not pay the gas bill.
Click to expand...
this kind of similar analogy to low volts vs high volts, you don't pay your energy bill based on volts or amps you pay for watt-hours.

Now the fact it was designed to operate at a high pressure (or higher voltage) likely means it very well may be a higher energy consuming item to some extent or maybe that said system is likely going to have more load on it overall.

In your burner situation I'd bet that pilot wasn't a "standing pilot" either, but instead there was a pilot flame segment in the ignition process before the main flame segment on every run.
 
kwired said:
this kind of similar analogy to low volts vs high volts, you don't pay your energy bill based on volts or amps you pay for watt-hours.

Now the fact it was designed to operate at a high pressure (or higher voltage) likely means it very well may be a higher energy consuming item to some extent or maybe that said system is likely going to have more load on it overall.

In your burner situation I'd bet that pilot wasn't a "standing pilot" either, but instead there was a pilot flame segment in the ignition process before the main flame segment on every run.
Click to expand...
I didn’t think he was giving an analogy. Just an anecdote on a previous job.
This heater, regardless of the pilot standing or whatever, used a lot.
1,100,000 btu heater running for 5 hours a day (that’s not a lot of runtime for a large space) without the pilot I calculate at about $1,000 per month on a commercial rate per therm of about .68.
Thats for ONE of them...
Glad I don’t have to pay that bill either.
 
Hv&Lv said:
I didn’t think he was giving an analogy. Just an anecdote on a previous job.
This heater, regardless of the pilot standing or whatever, used a lot.
1,100,000 btu heater running for 5 hours a day (that’s not a lot of runtime for a large space) without the pilot I calculate at about $1,000 per month on a commercial rate per therm of about .68.
Thats for ONE of them...
Glad I don’t have to pay that bill either.
Click to expand...
Glad I don't have to pay the bill for a service supplying say a 1000 HP motor either, but also must presume that motor and whatever it is driving is making you $$ or is supplemental in some way to something that is making you $$. Or said burner in his case.
 
Just wired a 300,000 btu powder coat oven. Owner originally wanted electric, but with a 400 amp 120/240 volt delta service, it wasn’t feasible, so he went with propane.
 
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