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Minimum spacing for G4 XLO QREC Quick Response, Extended Coverage

Minimum spacing for G4 XLO QREC Quick Response, Extended Coverage

Minimum spacing for G4 XLO QREC Quick Response, Extended Coverage

(OP)
Happy New Year everyone!

I think I know the answer but being a slow holiday (yeah, I'm working) I thought I would ask the collective wisdom this forum supplies.

Minimum spacing for the Reliable Model G4 XLO QREC Quick Response, Extended Coverage Concealed Sprinkler

Cut sheet:

http://www.reliablesprinkler.com/pdfs/products/144%20G4XLO%20QREC%20Concealed%20ConcealerPlus.pdf

Minimum sprinkler spacing is 10.5 ft.

Consider the sketch http://img403.imageshack.us/img403/7851/g4xloqrec.jpg

I think I can space these sprinklers < 10'-6" apart if there is a soffit as shown.  Other than cold showering is there any other reason for the minimum spacing requirement?

This is a really large job for me and I don't need to be making silly mistakes.

Thanks.
 

RE: Minimum spacing for G4 XLO QREC Quick Response, Extended Coverage

It appears you are good to go.  Your ceiling construction satisfies 13-2010 8.8.3.4.2.

Neither NFPA 13 or the datasheet specify a minimum square footage for EC heads (like ESFR), so my interpretation is that the concern lies with cold-soldering, and not overwhelming the system due to excessive heads being opened.    

RE: Minimum spacing for G4 XLO QREC Quick Response, Extended Coverage

(OP)
8.8.3.4.2  Sprinklers shall be permitted to be placed less than 8 ft (2.4 m) on center where the following conditions are satisfied:

snip

(3) Baffles shall be not less than 8 in. (203 mm) wide and 6 in. (152 mm) high.

I am going to play safe.... I think what I will do is place them 10'-6" apart.  

 

RE: Minimum spacing for G4 XLO QREC Quick Response, Extended Coverage

Most want to max out the spacing???

RE: Minimum spacing for G4 XLO QREC Quick Response, Extended Coverage

(OP)
"Most want to max out the spacing???"

For most of it I'm hitting 18'x18' but a messier than usual ceiling layout, with multiple pockets and light fixtures centered in those pockets, that keep away head placement.
 

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