Heating and hot water

Heating via underfloor heating (where fitted)

Image 1: HIU cover for (most) flats in Flank A

Image 2: HIU meter for (most) flats in Flank A

Heating to the apartment is via underfloor heating. The heating medium is generated by the heating interface unit (HIU) (Images 1 & 2) located in the utility room or cupboard. Primary inlet heating from the Park Hill central heat exchanger is continuously available for use at the HIU. This primary heat, when required, passes through the heating plate heat exchanger within the HIU which heats the heating water that circulates through the underfloor heating system when required.

Image 3: Room thermostat in flats equipped with underfloor heating

Control of the underfloor heating is via room mounted programmable room thermostats (Image 3). All the main living areas have thermostats which offer “zone control”. For setting and operation of the programmable room thermostats see programmable room thermostat user guide (PDF).

When a zone of heating is called for under the dictates of the room thermostat this energises and opens up the corresponding actuator on the underfloor heating manifold to allow heating water to circulate around that underfloor heating zone. The pumps on the Underfloor heating manifold and within the HIU will also start.

When temperature within that heating zone is satisfied, the thermostat will de-energise the system.

Primary heating to the HIU from the Park Hill heat exchanger can be isolated by closing the valves with black tags detailing “District heating flow” & “District heating return”

Apartment heating from the HIU to the underfloor heating manifold can be isolated by closing valves with black tags detailing “Apartment heating flow” & “Apartment heating return”.

Hot water

Hot water to appliances is generated through a second heat exchanger within the HIU. This is on a demand basis i.e. when a hot tap is opened then incoming cold water is heated to a set temperature to flow out of the tap. There will be a short time delay between opening an outlet for hot water and receiving hot water at the outlet.

To isolate hot water to the apartment use the stop cock as detailed below in notes.

Notes

Cold water

Image 4: Cold water isolation tap for (most) flats in Flank A

Cold water to the apartment is isolated via the stop cock located in the utility room or cupboard. This valve will isolate both hot and cold water to the whole apartment (Image 4).

Underfloor heating

Image 5: HIU valves for (most) flats in Flank A

Image 6: Underfloor heating valves.

Images 5 & 6 show the valves to the HIU and the piping and valves for the under floor heating. Residents should not adjust these or tamper with them under any circumstances. In the event one of the systems failing refer to the guidance above and call out a qualified professional.