1
Hot water Questions and Correct
Answers Newest 2026-2027. Graded A
A customer complains that the spray from the showerhead of an electric
shower has significantly reduced over a period of time what is the most
likely cause of this problem - ANSLimescale buildup in the showerhead
A customer says that the water flow rate from a gravity fed shower mixer
has always been poor since its installation how would you overcome this
problem - ANSRaise in the cold water storage system to a greater height
above the shower
A defect in which of the following components to prevent an electrical
supply being provided to the shower pump
A) double check valve
B) line strainer
C) Antivibration mounting
D)Flow switch - ANSFlow switch
A hot water cylinder with coil is an - ANSIndirect double feed
A hot water primatic chamber cylinder - ANSIs a Indirect single feed
A hot water system with immersion heaters - ANSIs a direct system
1
, 2
A low-pressure manual shower mixer valve must be supplied with -
ANSHot and cold water from storage
A maintenance program in which hot water taps are re-washerd annually
Regardless of whether the valve is defective is described as - ANSPlanned
preventative maintenance
A method of preventing energy and water wastage in hot water pipework
With long dead legs is known as - ANSTrace heating
A negative head pump has - ANSA non-return valve to hold the pressure in
the pipework
A plastic feed and expansion system must be - ANSSet on a firm level
boarded supporting the entire base
A positive head pump (regenerative) only activates - ANSWhen there is a
natural head or flow of water to it if not you need a negative head
pump(centrifugal pump)
A replacement part number for a flow switch to a shower pump can be
found from the - ANSPump manufacturer
A replacement pump for a secondary hot water circuit is normally
manufactured from what material - ANSBronze
A shower pump should normally be sat on - ANSAntivibration mountings
2
, 3
After removing the cold water storage system from an occupied dwelling
the plumber has to leave site for materials what safety Caution needs to be
done before leaving - ANSMake sure the system is isolated and can't be
refeild
After the tundish to have to be a minimum of what fall - ANS300mm
An unvented system should be refilled with all hot taps open to - ANSThis
is to ensure the pockets are not trapped within the storage vessel
And immersion heater has what type of cable - ANSSpecial 1.5 mm heat
Resistant butyl cable and must Be isolated by a double pole isolator
And immersion heater should be limited to - ANS55° to prevent to prevent
limescale
And on an immersion heater with a Resettable double thermostat -
ANSOne thermostat can be set between 50 and 70° was to ever is a
resectable high limit what designed to switch off the power to unit with a
maximum temperature exceeded
Before leaving site open ended pipework that is isolate at the stop valve but
is connected to a live plumber system must be made safe bye - ANSFitting
push fits/stop ends
3
Hot water Questions and Correct
Answers Newest 2026-2027. Graded A
A customer complains that the spray from the showerhead of an electric
shower has significantly reduced over a period of time what is the most
likely cause of this problem - ANSLimescale buildup in the showerhead
A customer says that the water flow rate from a gravity fed shower mixer
has always been poor since its installation how would you overcome this
problem - ANSRaise in the cold water storage system to a greater height
above the shower
A defect in which of the following components to prevent an electrical
supply being provided to the shower pump
A) double check valve
B) line strainer
C) Antivibration mounting
D)Flow switch - ANSFlow switch
A hot water cylinder with coil is an - ANSIndirect double feed
A hot water primatic chamber cylinder - ANSIs a Indirect single feed
A hot water system with immersion heaters - ANSIs a direct system
1
, 2
A low-pressure manual shower mixer valve must be supplied with -
ANSHot and cold water from storage
A maintenance program in which hot water taps are re-washerd annually
Regardless of whether the valve is defective is described as - ANSPlanned
preventative maintenance
A method of preventing energy and water wastage in hot water pipework
With long dead legs is known as - ANSTrace heating
A negative head pump has - ANSA non-return valve to hold the pressure in
the pipework
A plastic feed and expansion system must be - ANSSet on a firm level
boarded supporting the entire base
A positive head pump (regenerative) only activates - ANSWhen there is a
natural head or flow of water to it if not you need a negative head
pump(centrifugal pump)
A replacement part number for a flow switch to a shower pump can be
found from the - ANSPump manufacturer
A replacement pump for a secondary hot water circuit is normally
manufactured from what material - ANSBronze
A shower pump should normally be sat on - ANSAntivibration mountings
2
, 3
After removing the cold water storage system from an occupied dwelling
the plumber has to leave site for materials what safety Caution needs to be
done before leaving - ANSMake sure the system is isolated and can't be
refeild
After the tundish to have to be a minimum of what fall - ANS300mm
An unvented system should be refilled with all hot taps open to - ANSThis
is to ensure the pockets are not trapped within the storage vessel
And immersion heater has what type of cable - ANSSpecial 1.5 mm heat
Resistant butyl cable and must Be isolated by a double pole isolator
And immersion heater should be limited to - ANS55° to prevent to prevent
limescale
And on an immersion heater with a Resettable double thermostat -
ANSOne thermostat can be set between 50 and 70° was to ever is a
resectable high limit what designed to switch off the power to unit with a
maximum temperature exceeded
Before leaving site open ended pipework that is isolate at the stop valve but
is connected to a live plumber system must be made safe bye - ANSFitting
push fits/stop ends
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