15
PLUMBING
CONNECTIONS
Check the connections between the Warm Water System and hot water plant closely for correct
connection using the plumbing diagrams provided.
The following points are of particular importance:
1.
A non-return valve must be installed with the Warm Water System between the cold water
take off to the Warm Water System and the inlet to the water heating plant.
2.
The HOT water building return line (if fitted) is connected after the non-return valve i.e.
between the non return valve and the inlet to the water heating plant.
3.
The cold water supply is common to the Warm Water System and the water heating plant to
ensure balanced pressure across the system.
4.
NO other cold water take offs have been made after the isolating/non-return valve in the
common cold water supply to the Warm Water System and the water heating plant.
ISOLATION & NOT RETURN VALVES
Check isolation valves and non-return valves (where required) have been fitted at:
1.
The common cold water supply to the Warm Water System and water heating plant.
2.
On both sides of the warm water ring main circulator(s).
3.
At the inlet and outlet of each water heater (if applicable)
COLD / HOT WATER
Using a digital thermometer check the cold water supply temperature, the temperature must be
within 5 to 30°C for the Warm Water System to operate reliably.
Using a digital thermometer check the hot water temperature at the water heating plant, the
temperature must be between 55 and 100°C for the Warm Water System to operate correctly.
Содержание tempermate
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