D H W - 1 INSTALL HOT WATER SYSTEMS & COMPONENTS

AS and A Level Design and Technology

D H W – 1 INSTALL HOT WATER SYSTEMS & COMPONENTS

Pound lane

Marlow

There were no anticipated delays to know off except for materials /sanitary ware not arriving on time or arriving damaged, but the retailers assured me that the materials would arrive on time.

I ensured the cylinder sits in the space provided; I checked the size of the cylinder is adequate for the customer’s requirements and to any future developments.

I ensure all hot water outlets are currently working properly.

I checked size of cylinder vent which is 22mm and discharging over tank.

The cold feed to the cylinder is 22mm which is adequate to supply the hot outlets. A 225 litres (50 gallons) storage cistern which is suitable and is also situated above the cylinder.

I checked with the customer that they were happy with the plans and sizing of the hot water cylinder.

Information on the job was available but there were no detailed plans, so we discussed and wrote out plans.

No specialised tools were required for the job; ...

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I checked size of cylinder vent which is 22mm and discharging over tank.

The cold feed to the cylinder is 22mm which is adequate to supply the hot outlets. A 225 litres (50 gallons) storage cistern which is suitable and is also situated above the cylinder.

I checked with the customer that they were happy with the plans and sizing of the hot water cylinder.

Information on the job was available but there were no detailed plans, so we discussed and wrote out plans.

No specialised tools were required for the job; we have all tools and connections available in the van. All materials and equipment was ordered and delivered before we commenced any work.

I install the system to industry standards; I replace the gate valve on the cold feed because it wasn’t holding up.

I installed the 450mm diameter by 900mm indirect pre-lagged cylinder, (which conforms to part L of the building regulations). I also installed an immersion heater as a back-up with the main heat source being primary circulation from the boiler.

I also replaced the drain-off washer to avoid any future problems.

I installed the bath and basin in the extension, I used tap connecters with fibre washers to make the seal between the appliance and pipe work.

I used Ballaflex valves before the outlets on all applicable appliances which were shut-off to stop unauthorised persons using the appliance. Also stickers stating ‘Do Not Use’ were place on appliances.

I took carpets and underlay up in the bedroom where working, to ensure no damage was made to the customers property. Also ornaments were moved to another room.

I tested the installation, which was fine, it met all specifications which were listed, and nothing needed to be amended.

I had to test the temperature at hot outlets to ensure they were 35 degrees C, which I achieved by fitting a blending valve.

Once the installation was completed I informed my boss/supervisor, who dealt with the customer.

I used a propane gas bottle to soldier fittings, which I used in well ventilated areas, and used a fire-proof mat where applicable (e.g., near decorations).