ISA 11 CENWAT

SAP 2005 uses SEDBUK boiler efficiencies to calculate the energy required to meet heating demand of the building. What does SEDBUK stand for?

• Seasonal greetings Efficiency of Domestic Boilers in the UK

• Seasonal Efficiency of Domestic Boilers in the UK Scotland and Wales

• Seasonal Efficiency of Domestic Boilers in the UK

• Seasonal Efficiency of Commercial Boilers in the UK

Combination boilers save space because:

• They are fed indirectly from the water mains with no need for a hot water storage cylinder or cold water feed cistern

• They are fed directly from the water mains with no need for a hot water storage cylinder or cold water feed cistern

• They are fed directly from the water mains with a need for a hot water storage cylinder and/or cold water feed cistern

Combination boilers save space because:

• They are usually intended for use in a sealed system which does not require a feed and expansion cistern (allowing a dry roof space)

• They are usually intended for use in a open system which does requires a feed and expansion cistern

• They are usually intended for installation in kitchen cupboards only where the unsightly boiler is hidden from view

Before selecting a combination boiler to be installed what should be checked to ensure that the dwelling has both satisfactory water pressure and an adequality sized water supply pipe, ensuring hot water service is adequate for the clients requirements.

• The Gas Industry Unsafe Situations Procedure (GIUSP)

• Gas Safety Installation & Use Regulations 1998 (GSIUR)

• Gas Safe Register Technical Bulletins

• Manufacturers Installation Instructions

Most existing boiler systems employ a vented indirect hot water cylinder in dwellings with a single bathroom. These cylinders are typically of 117 - 140 litres in capacity. What could be done to increase the efficiency of this type of cylinder?

• Upgrade cylinder to a high efficiency type with rapid heating coil, and insulate all pipework from the cylinder up to 1m

• Upgrade cylinder to a bigger volume cylinder 190 litres, and insulate all pipework from the cylinder up to 1m

• Upgrade cylinder to a high efficiency type with rapid heating coil.

• Upgrade cylinder to a bigger volume cylinder 190 litres

A Frost Thermostat and Pipe Thermostat are typically installed (in series) in unheated spaces such as garages.

• Ture

• False

What type of control features all the below:

Weather or Load Compensator, Optimum Start, Frost Protection, Night Setback, Anti-Cycling Control, and Hot Water Override.

• Building Management System

• Boiler Energy Manager

• Weather Control

• Programmable Room Thermostat and Thermostatic Radiator Valves

When commissioning a boiler which of the following is correct:

• System cleansed using a recognised flushing procedure

  Use a suitable inhibitor

  Check key system components for safe operation

  Controls set to their optimum setting

• System cleansed using a recognised flushing procedure

  Use a suitable inhibitor

  Check key system components for safe operation

  Controls set to their optimum setting

  Customer informed on how to operate the system and controls

• System cleansed using a recognised flushing procedure

  Use a suitable inhibitor

  Check key system components for safe operation

How would you classify room sealed boiler with a worn/defective case seal on a C13 boiler

• At Risk

• Immediately Dangerous

• Immediately Risky

• Not to Current Standards

How would you classify room sealed boiler with a worn/defective case seal on a C13 boiler where Products of Combustion are evident

• At Risk

• Immediately Dangerous

• Immediately Risky

• Not to Current Standards