Hot Box and GPM

[Don M. 14]

What would happen if you run a 8 GPM machine through a hot box or a surface cleaner thats only rated for 6 GPM?

Thanks

[PWkid 79]

The hot box wouldn't heat the water as much as one that is rated for 8 gpm. The hot box usually has a smaller coil and smaller burner. The surface cleaner would probably put the extra water into your bypass unless you have a flow actuated unloader then it would go in and out of bypass.

[One Tough Pressure 580]

What would happen if you run a 8 GPM machine through a hot box thats only rated for 6 GPM?

I do this and can't see a real big difference. I turn the thermostat up a little bit more than I did with 5 gpm, but I am still not cranking it open for normal cleaning.

What would happen if you run a 8 GPM machine through a surface cleaner thats only rated for 6 GPM?

Depends on the surfacer, but if you change the nozzles to match the 8gp then you should be just fine. If it is a floater, then it may float higher than normal, requiring more force to hold it down. May cause faster swivel wear depending on the brand of the swivel.

[Paul Kassander 26]

Yes, you won't get as much of a temp rise but you will still get some hot water my guess is about 20-50 degree drop depending on the hot box. And change the tips to match the flow.

[chris francis 15]

I know this is old thread but if I am reading right for the hot box you donnot loss much but larger gpms have more coils to them. what elso should you look for in hot box before purchasing

[Paul Kassander 26]

The larger burners have more coil usually 20-50 feet for more heat transfer (surface area) and are equipped with a SDC burner assembly (12v) or SF (120v) which have a larger blower fan and fuel nozzle for more btu's. Vertical burners are said to be more efficient in the heat transfer as well. If you are not looking for a lot of heat rise you could go with a smaller burner, it would just run longer or not shut off when hooked up to a higher volume unit.

[big pressure 14]

i ran an 8 gpm pump thru a 6 gpml box and I lost about 1000 psi

[chris francis 15]

Thank you for that information another question this may be more personal would it be better to buy it off the internet or try to find local person to get it from I am not trying to be cheap but see that they are alot cheaper online then from the dealers.

[John T 744]

For a valuable piece of equipment like that I would usually suggest to buy it from your local dealer. But since you can get a much better deal via the internet these days I would go that route and if there is a problem down the road then have your local dealer service it.

[chris francis 15]

Thank you for that I was debating online and off line what would be better.