UL Listed, FM Approved and NFPA 20: three different questions

A useful fire pump specification separates the product being supplied from the system being installed. The words UL, FM and NFPA answer different questions, so the submittal should address each one explicitly.

What UL addresses

UL Solutions evaluates pumps and engines separately, and lists distinct standards for centrifugal fire pumps, diesel engines, controllers and couplings. These include UL 448 for the pump, UL 1247 for diesel engines and UL 218 for controllers. A pump certificate is not a substitute for reviewing the other components.^[1]

What FM Approved means

FM describes its approval programme as product and service testing backed by a certification process. Products and services that successfully complete that process can carry the FM APPROVED mark and appear in its directories. An FM reference in a brochure should therefore lead to the applicable approval record, not end the review.^[2]

What NFPA 20 addresses

NFPA 20 is the installation standard for stationary fire pumps. Treat installation review as a separate workstream from checking the pump's product certification. UL's service guidance also identifies NFPA 20 as the installation basis for pumps, engines, couplings and controllers.^[1][3]

Make the specification unambiguous

Our recommended submittal schedule has separate entries for the pump, driver, controller, relevant accessories and the installation design. For each item, state what the project requires and the evidence that will be submitted. Avoid using a single unticked box called "FM/UL" to stand for an entire assembly.

The supplied Pumpsense fire delivery programme contains separate UL and FM rating schedules. For example, its end-suction UL schedule should not be treated as proof that every listed end-suction duty also has FM Approval. Ask for confirmation of the exact model, rating, speed and configuration in the required scheme.

Source: Pumpsense fire delivery programme, pp. 6-10.