Crown Boiler Mega-Stor Instructions d'exploitation télécharger pdf (Page 17)









Because hot water is always circulated in the hot

water branch the entire branch should be insulated to

prevent excessive heat loss.

MANIFOLD DOMESTIC WATER PIP-

ING

Figure 7.10 illustrates the recommended method of

piping the domestic water side of several tanks to-

gether. All Mega-Stors are piped in a “reverse- return”

manner just like the boiler piping. This balances the

pressure drop through each tank, resulting in an even



Each tank must have its own T&P valve. It is recom-

mended that each tank be equipped with its own isola-

tion valves, unions, and drains so that one tank may

be removed from the system. If local codes require a

-



be used for tanks or each tank must be equipped with







is permitted, an expansion tank must be sized to ac-

commodate the expansion volume of all tanks.

TABLE 7.7: MINIMUM T&P VALVE SIZES

*If the Mega-Stor is connected to a boiler which has a Gross Output

LESS than the “Max. T&P Valve Capacity” shown below, install

a T&P valve having a capacity greater than or equal to the boiler’s

Gross Output.

*If the Mega-Stor is connected to a boiler which has a Gross Output

GREATER than the “Max. T&P Valve Capacity” shown below,

install a T&P valve having a capacity greater than or equal to the

“Max T&P Valve Capacity.”

Model Max T&P Valve Capacity (BTU/hr)

MS-26 172,800

MS-40 181,800

MS-53 199,800

MS-79 215,100

MS-119 445,635

MSH-40 103,344

MSH-53 145,289

*Maximum T&P valve pressure setting - 150 psi

FIGURE 7.6A: BASIC DOMESTIC WATER PIPING

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 27 28

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Crown Boiler Mega-Stor Instructions d'exploitation Page 17

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