Crown Boiler Mega-Stor Instructions d'exploitation

D ESIGNED TO L EADManufacturer of Hydronic Heating ProductsP.O. Box 14818 3633 I. StreetPhiladelphia, PA 19134www.crownboiler.comMega-Stor TMStainle

9Fitting DescriptionQuantity(a)FlowTotal(d)8.0 GPM(b)12.7 GPM(c)MS-26 Coil, MSH-40 Coil 2.5 --- MS-40 Coil 3.0 --- 3.0 MS-53, MSH-53H

10V. BEFORE STARTING INSTALLATIONCharacteristic Min MaxpH 6.0 8.0Chloride (PPM) 0.0 80.0TABLE 5.1: WATER CHEMISTRY REQUIREMENTSWater used in the Mega-

11VII. PIPING1) BOILER SIDE PIPINGFigures 7.1 thru 7.4 show typical boiler side piping for several common situations. Regardless of which system is us

12FIGURE 7.1: BOILER-SIDE PIPING USING CIRCULATOR ZONES FIGURE 7.2: BOILER-SIDE PIPING USING ZONE VALVES (2-WAY)

13FIGURE 7.4: BOILER-SIDE PIPING FOR MULTIPLE MEGA-STORSFIGURE 7.3: BOILER-SIDE PIPING USING A THREE WAY ZONE VALVE

142) DOMESTIC SIDE PIPINGBASIC DOMESTIC PIPINGFigure 7.6A shows typical domestic water piping for a Mega-Stor. All components except the control are p

15 WARNINGA thermostatic mixing valve does not eliminate the risk of scalding.* Set the Mega-Stor thermostat as low as practical.* Feel water before

16

17FIGURE 7.6B: CORRECT TEMPERATURE & PRESSURE VALVE PIPING FOR MS-26, MS-40, MS-53FIGURE 7.6C: CORRECT TEMPERATURE & PRESSURE VALVE PIPING FOR

18FIGURE 7.8: DOMESTIC HOT WATER PIPING USING A MIXING VALVEFIGURE 7.9: DOMESTIC WATER PIPING FOR DIS-TANT FIXTURES USING A RECIRCULATION LINE

1CONTENTS I. Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  

19FIGURE 7.10: DOMESTIC HOT WATER PIPINGUSING MULTIPLE MEGA-STORS

20VIII. WIRINGThe following general notes apply to all wiring: 1) Wiring must be done in accordance with all codes. In the absence of any codes the s

21CIRCULATOR ZONE WIRING (PRIORITY)Figure 8.2 is a connections diagram for priority circulator zoning. This system is similar to non-priority circulat

22FIGURE 8.3: ZONE VALVE WIRING(2-WAY VALVES, NON-PRIORITY)FIGURE 8.2: CIRCULATOR ZONING (PRIORITY)

23FIGURE 8.4: ZONE VALVE WIRING(2-WAY VALVES, PRIORITY)IX. START-UP AND CHECK-OUT 1) Make sure that the system is free of leaks and that air is purge

24  tic water need

25XI. PARTSKey # Part # Description Qty./Tank1 35-3200 Thermostat (L4006A2114) 15 20-021 Handhole Cover 16 20-022 “O” Ring Gasket 17 20-023 Handhold C

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27Manufacturer of Hydronic Heating ProductsP.O. Box 14818 3633 I. StreetPhiladelphia, PA 19134www.crownboiler.comPN 98-060 • 05/13 Rev 8

2I. PRODUCT DESCRIPTIONThe Crown Mega-Stor series indirect water heater is designed to generate domestic hot water in conjunction with a hot water boi

3ModelPotable Volume(Gal.)Dimensions in InchesCoilSurface(Sq. Ft.)WeightA B C D E F G H Net FullMS-26 25.6 38-3/4 20-1/4 2 9-3/4 22-1/2 --- --- --- 6.

4IMPORTANTThe following procedures are used to size indirect water heaters based on the amount of hot water which will be required during a given hour

5Table 3.2: Maximum Possible Continuous Draw(180F Boiler Supply, 77F DHW Rise, 135F Outlet) (a) (b) (c)Mega-Stor Continuous Draw (Gal/min)Min Boiler O

6IV. ZONE DESIGNIMPORTANTsection for

7Fitting DescriptionQuantity(a) FlowTotal(d)8.0 GPM(b)12.7 GPM(c)MS-26, MSH-40 Coil 2.5 --- MS-40 Coil 3.0 --- MS-53,

8EXAMPLE 1  