Section Env-Dw 406.15 - System Concept(a) If limited fire protection service is to be provided, the following water system design criteria shall be observed: (1) When fire hydrants are planned by the water system owner, a separate water storage tank shall be installed and the fire hydrants shall connect to only this water storage tank. The re-fill pipe for this water storage tank shall incorporate an air gap. There shall be no connection between the domestic water system and the fire storage tank; and(2) Where sprinklers are planned to be installed within the premises to be served by the water system, the service line and domestic plumbing shall be appropriately increased in size. The service line shall be sized to accommodate a design flow rate specified in the state fire code, Saf-C 6000.The sprinkler portion of the piping shall be separated from the domestic plumbing by at least a testable double check valve.(b) Additional provisions for source capacity and storage facilities in the water system's design shall be made to accommodate fire flows.N.H. Code Admin. R. Env-Dw 406.15
(See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14