Please could somebody help me out with the questions below i have Bold in the right answer i think
Inan indirect system of heating and hot water, which includes a cold waterstorage cistern and a feed and expansion cistern
a)the water level in the feed and expansion cistern should be below that of thecold water storage cistern
b)the two cisterns bases should be at equal level
c)the water level in the feed and expansion cistern should be above that of thecold waterstorage cistern
d) the water levels in the two cisternsshould be equal.
2The connection of an open vent pipe and a cold feed pipe, can be made to afully pumped
systemusing
a)an automatic air vent
b)an injector tee
c) an air separator
d) adiverter valve.
3Which of the following is regarded as best practice when branching a large newradiator circuit into an existing heating circuit in cold weather?
a)Drain the system down as the first action.
b)Branch into the pipework before fitting the radiators.
c) Install the new radiators and pipework runsbefore branching in.
d)Install the radiators, branch into the pipework and install the new pipework.
4When fully draining down a heating system
a)all the air vents should be closed
b)the open vent pipe should be capped
c) the air vents should be opened
d)the radiator valves should be closed.
5 Tosatisfy regulations, the controls required for a fully pumped heating system(hot water priority) using a zone valve arrangement, consists of
a)two number 2 position diverter valves, time clock, cylinder thermostat, roomthermostat
b) 3port valve, programmer, room thermostat, cylinder thermostat, TRVs
c) 2 port valve, time clock, roomthermostat, cylinder thermostat, TRVs
d) 2port valve, room thermostat, cylinder thermostat.
6The cold water supply to a fully pumped open vented central heating systemshould beisolated at the
a)stop valve to the incoming cold water supply pipework
b)fullway valve on the cold feed pipework from the F & E cistern
c)service valve to the float operated valve to the CWS cistern
d) service valve to the float operated valveto the F & E cistern.
7 Onan open vented fully pumped system, positioning the pump between the cold feedand vent would
a)mean installing a three port motorised valve on the primary flow
b)increase the efficiency of the central heating system
c) result in water pumping over the ventto the F & E cistern
d)result in water pumping over the vent to the CWS cistern.