We have a small project (13,800 sqft total) which is a four-story, all residential apartment building, using mostly CPVC pipe. The system is under NFPA 13R.
The city supply is very poor, so we will have a fire pump that meets NFPA 20 (as is required by 13R). The pump is an 8-HP, 70 PSI at 75 GPM.
Is a jockey pump necessary with such a small fire pump?
Normally, for our large commercial NFPA 13 projects, a jockey pump is not even a discussion because we don't want the main fire pump (500 - 1,500 gpm) cycling on just to support system maintenance pressure.
For such a small project with a significantly smaller fire pump, is there any harm in not providing a jockey pump?
The question is not based on cost - the pump room is microscopic and we're already having trouble fitting in all the equipment and controllers as is.
Appreciate you all - thanks in advance.
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