Strebel ASCONA A, Инструкция по установке, эксплуатации и обслуживанию

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ASCONA ‘A’ & ‘APV’ INSTALLATION INSTRUCTIONS
VENTILATION INTO A ROOM
OR INTERNAL SPACE IN CM²
A3 &
APV 3
A4 &
APV 4
A5 A6
HIGH
LEVEL
182 275 378 471
LOW
LEVEL
364 549 756 942
VENTILATION DIRECT TO
OUTSIDE AIR IN CM²
A3 &
APV 3
A4 &
APV 4
A5 A6
HIGH
LEVEL
91 138 189 236
LOW
LEVEL
182 275 378 471
VENTILATION DIRECT TO
OUTSIDE AIR IN CM²
A7 A8 A9
HIGH
LEVEL
277 301 324
LOW
LEVEL
553 602 648
TABLE 3 TABLE 4
TABLE 5
3.3 Mechanical Ventilation.
The minimum quantity of air required for combustion and boiler house ventilation shall be sup-
plied at a minimum flow rate in accordance with BS 6644.
All air inlet and extract fans shall be fitted with automatic controls causing safety shut-down or
lockout of the boiler(s) in the event of the inlet or extract air flow failing.
4.0 GAS SUPPLY
4.1 An existing meter should be checked preferably by the Gas Supplier, to ensure the meter is
adequate to deal with the rate of gas required.
4.2 Pipework from the meter to the boiler must be of adequate size. Pipes of smaller size than the
boiler inlet gas connection should not be used. All gas pipework should be fitted and on com-
pletion of installation tested, in accordance with BS 6891 : IGE/UP/2 Gas Installation Pipework,
Boosters and Compressors on Industrial and Commercial Premises.
4.3 Gas supply connections is as follows:
Ascona APV 3 & PV 4 = 1/2" BSP
Ascona A 3, A 4, A 5, A 6 & A 7 = 1/2" BSP
Ascona A 8 & A 9 = 1" BSP.
4.4 A gas service cock must be fitted immediately adjacent to the boiler.
Table 5 refers to the ventilation requirements (direct to outside air) for the Ascona A7 – A9 boilers.
Table 3 refers to the ventilation requirements (to internal space) for the Ascona A3 – A6. Table 4
refers to ventilation direct to outside for the Ascona A3 – A6.