Esoteric DV-30s Service Manual download pdf (Page 9)

9 GENERAL Manual No. 405/0101

GENERAL - PAGE 9

2.11 SEALED SYSTEM REQUIREMENTS

Refer to Fig. 4.

1. The installation must comply with the requirements of BS6798 and BS5449. Maximum water temperature is 82°C ±

3°C.

2. A safety valve set to operate at 3 bar and a pressure gauge covering the range 0 to 6 bar are incorporated within the

boiler.

3. A 10 litre expansion vessel to BS4841 is fitted and pre-charged to 0.5 bar. This is suitable for a system with a

maximum water content of 140 litres.

4. Water lost from the system shall be replaced from a make-up vessel, and double check valve, mounted higher than the

top of the system and connected as shown in Fig. 4a or manually by a temporary hose connection as shown in Fig. 4b

(remove the temporary hose after use).

Note: Stop valves must comply with the requirements of BS1010:2.

5. The hot water cylinder shall either be the indirect coil type or a cylinder fitted with an immersion calorifier.

6. An automatic air vent should be fitted at the highest point in the system.

2.12 SYSTEM SCHEMATIC

Refer to Fig. 5.

Fig. 5

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Esoteric DV-30s Service Manual Page 9