HOT WATER
WHAT TEMPERATURE DOES THE HIGH LIMIT THERMOSTAT CUT ELECTRIC CONNECTION TO THE ZONE VALVE ?
BETWEEN 80°C - 85°C
WHO IS RESPONSIBLE FOR ENFORCING THE WATER REGULATIONS ?
THE WATER SUPPLIER
WHAT REGULATION RELATES TO ENERGY EFFICIENCY IN NEW BUILDINGS ?
APPROVED DOCUMENT PART L1A
NAME 2 REASONS WHY DRAINS AND SOIL PIPES CAN GET BLOCKED ?
1.PHYSICAL BLOCKAGE
2.BROKEN DRAINS
3.TREE ROOTS
WHAT DO YOU USE TO MEASURE FLOW ?
WEIR CUP/WEIR GAUGE
ACCORDING TO BUILDING REGS G3, IN WHAT TIME AND AT WHAT TEMPERATURE SHOULD HOT WATER REACH EACH OUTLET FROM THE CYLINDER ?
HOT WATER SHOULD BE AT 50OC WITHIN 30 SECONDS
WHAT BRITISH STANDARD IS LINKED TO WATER REGULATIONS ?
BS EN 806
WHICH TERM IS COMMONLY USED TO DESCRIBE A MULTI-ZONE SYSTEM ?
AN S PLAN PLUS
FILL THE APPLIANCES ON THE SYSTEM TO THEIR OVERFLOW
DEFINE BACK SIPHONAGE
WHEN THERE IS A LOSS OF PRESSURE IN THE WATER SUPPLY (NEGATIVE PRESSURE)
IT SHOULD ENTER THE TOP QUARTER OF THE CYLINDER
USED TO STORE WATER BEFORE IT IS PUMPED VIA A BOOSTING PUMP
WHAT IS THE TERM HONEYWELL USED TO DESCRIBE A SYSTEM CONTROLLED WITH TWO-ZONE VALVES ?
S PLAN SYSTEM.
HOW MANY BATHS OR SHOWERS ARE REQUIRED FOR FOUR PEOPLE ?
ONE BATH OR SHOWER
WHAT IS COEFICENT LINEAR EXPANSION ?
THE EXPANSION OF A MATERIAL IN LENGTH DUE TO HEAT
WHERE WOULD YOU FIT INSULATION ON AN UNVENTED CYLINDER ?
IT IS A METHOD OF SUPPLYING WATER TO THE HIGHEST PART OF THE BUILDING (USED IN HIGH BUILDINGS WHERE WATER STRUGGLES TO REACH THE TOP)
HOW MANY ZONES SHOULD A HOUSE BE DIVIDED INTO AND WHAT CONTROL METHOD SHOULD BE USED ?
EVERY HOME MUST BE DIVIDED INTO AT LEAST TWO HEATING ZONES, USING A THERMOSTAT CONTROLLING A MOTORISED VALVE.
ON A VENTILATED DISCHARGE SYSTEM, WATER TRAP SEALS ARE PROTECTED FROM INDUCED OR SELF-SIPHONAGE BECAUSE A VENT PIPE IS LOCATED NOT MORE THAN WHAT DIMENSION FROM ANY APPLIANCE ?
750MM FROM ANY APPLIANCES
WHAT IS THE FORMULA TO WORK OUT PRESSURE ?
HEAD HEIGHT X 9.81 (GRAVITY) = INTENSITY OF PRESSURE N/m2
WHICH BRITISH STANDARD WOULD YOU CONSULT WHEN DESIGNING AND INSTALLING A HOT WATER SYSTEM FOR A DWELLING ?
(3 INCLUDED)
BRITISH STANDARD 6700 IN CONJUNCTION WITH BS EN 806 AND BS EN 8558
WHAT IS THE PURPOSE OF A PRESSURE VESSEL ON A SURFACING PUMPING SYSTEM ?
AIDS BOOSTING WHEN THERE ARE UNRELIABLE SUPPLIES
NAME THE FIVE SPECIALIST TECHNOLOGY-SPECIFIC SECTIONS IDENTIFIED IN THE DOMESTIC HEATING COMPLIANCE GUIDE ?
COMMUNITY HEATING, UNDERFLOOR HEATING, HEAT PUMPS, SOLAR WATER HEATING AND MICRO CHP UNITS.
HOW DOES THE CESSPIT OR CESSPOOL SYSTEM WORK ?
A CESSPOOL IS AN UNDERGROUND TANK THAT STORES SEWAGE FROM A DWELLING UNTIL THE TIME OF ITS DISPOSAL, WHICH IS CARRIED OUT BY A SPECIALIST CONTRACTOR
WHAT IS MALLEABILITY ?
WHEN A MATERIAL IS DEFORMED BY COMPRESSIVE STENGTH WITHOUT FRACTURING