(a) Fig. Q1. below illustrates an unfinished schematic of a conventional low pressure hot water (LPHW) boiler plant installation serving a hospital. Complete the pipework schematic diagram for the primary boiler circuit ONLY and mark up your solution directly onto Fig.Q1 provided and submit it as part of your answer with your examination number clearly noted. In particular the correct pipework arrangements, safety features, method of boiler(s) plant isolation, controls should be indicated. (20 marks) PRIMARY- FLOW TYPICAL BOILER PLANT & PRIMARY DISTRIBUTION SCHEMATIC ARRANGEMENT FOR A 2 BOILER INSTALLATION BOILER No.1 PRIMARY FLOW HEADER BOILER No.2 PACKAGED PRESSURISATION UNIT PRIMARY RETURN PRIMARY RETURN HEADER tttt RRRR C O -LOW LOSS HEADER(S) DUTY/STAND-BY PRIMARY PUMP SET SECONDARY CIRCUITS FIG QI CONVENTIONAL GAS FIRED LPHW BOILER PLANT INSTALLATION: (Note: A larger sketch of figure Q1 is provided for clarity)