WorksheetsHot water level 3 9189
Total questions: 12
Worksheet time: 6mins
Which of these is NOT a key factor when designing a hot water system
Number of outlets
Type of fuel
Running costs and efficiently
Water pressure
water hardness or softness
What is the correct description of a centralised hot water system
Hot water is delivered from a central point to all HW outlets in the building
Hot water is delivered form a point close to the appliance and only supplies that appliance
What is the name of this hot water component
Thermostatic blending valve
Thermostatic mixing valve
Thermostatic control valve
Thermostatic moving valve
What is the correct setting for this valve on a domestic bath
65c
20c
45c
48c
What building regulation approved document covers hot water safety and water efficiently
G
F
H
A
When installing servicing or maintaining an unvented hot water cylinder what approved documentation needs to be followed and consulted - which one is not correct
Building regulation Part G3
Building regulation Part A
Water regulations 1999
Building regulations L1
Manufactures instructions
Building regulations state that hot water storage systems that are not open vented require the water temperature stored should never exceed what temperature
60c
90c
95c
100c
What is the purpose of the non return single check valve in an unvented hot water storage system
Isolate the water supply for maintenance
Prevent grit and debris from entering the cylinder
Stop expanded hot water from entering the cold water supply pipe
Prevent over heating of the cylinder
What component device needs to be installed on the cold supply to an unvented cylinder to prevent grit and debris damaging other components
Which type of system can not be used to heat an unvented cylinder
Fully pumped
Gravity
S plan
Y plan
What regulation covers insulation and performance of Hot water cylinders
Approved document L1
Approved document G3
water regulations 1999
Approved documents P
What grade of vented cylinder is graded at 3.6 bar pressure or 25m head
Class 1 cylinder
Class 2 cylinder
Class 3 cylinder
Class 4 cylinder
