Crown Boiler MT100G Betriebsanleitung

D E S I G N E D T O L E A DTel: (215) 535-8900 • Fax: (215) 535-9736 • www.crownboiler.comManufacturer of Hydronic Heating Prod

METHOD C: COMMERCIAL1) Table 3 shows demands for various fixtures found in commercial buildings in gallons per hour. Todetermine the hot requirements

3) Several Maxi-Therms may be used together if needed. If this must be done keep the following in mind:• The first hour rating of several Maxi-Therms

111. Basins, Private Laundry 2 2 2 2 2 2 22. Basins, Public Lavatory 4 6 8 8 12 6 153. Bathtubs 20 20 30 204. Foot Basins 3 3

Figure 3: Use of Worksheet 2 and Boiler Output Graphs From Example 212(1) (2) (3)Fixture Description:Basins, Private Lavatory2X25=50Basins, Public Lav

130501001502002503003500 50000 100000 150000 200000BOILER OUTPUT (BTU/hr) FIRST HOUR RATING (GAL/hr)Figure 4c: MT079G Ratings at Different Boiler Outp

140501001502002503003504004500 50000 100000 150000 200000 250000BOILER OUTPUT (BTU/hr) FIRST HOUR RATING (GAL/hr)Figure 4d: MT100G Ratings at Differen

15Zone Design In designing the Maxi-Therm zone piping system the following points should be considered:1) Circulator or Zone Valve Zoning? – Circula

16(1) (2) (3) (4)Fitting Description 8 Gal/min 10 Gal/minMT040G Coil 2.60MT050G Coil 2.60MT079G Coil 4.40MT100G Coil 5.701 ft 1" St. Pipe 0.05 0.

17Circulator 8.0 Gal/min 10.0 Gal/minTaco007 8.2 7.3Taco 008 9.8 7.2Taco 0011 22.8 21.0Grundfos UPS 15-42F 11.0 9.0Grundfos UPS 26-64F 21.0 19.5Grundf

WARNING• Failure to properly support a Maxi-Therm could result in property damage or per-sonal injury.• Some localities may require this product to be

CONTENTSI. Product Description... 2II. S

3) The Maxi-Therm may be located some distance from the boiler provided the zone system is designed toprovide the flow called for in Table 1 through t

VI. PIPINGBOILER SIDE PIPINGFigures 6-11 show typical boiler side piping for several common situations. Regardless of which system isused, it is imper

Figure 6: Boiler-Side Piping Using Circulator ZonesFigure 7: Boiler-Side Piping Using Zone Valves (2-Way)21

RADIANT PANEL OR OTHER “LOW TEMPERATURE” SYSTEMThe First Hour Ratings published in this manual are based on a boiler supply temperature of 180F. If, f

23Figure 9: Boiler-Side Piping in a Low Temperature System Using a Heat ExchangerFigure 10: Boiler-Side Piping in a Low Temperature System Using a Mix

DOMESTIC SIDE PIPINGBASIC DOMESTIC PIPINGFigure 12 shows typical domestic water piping for a Maxi-Therm. All components except the thermostat areprovi

e) Dielectric Unions (recommended)- Used to electrically isolate the Maxi-Therm from the connecteddomestic water piping. This helps to minimize the po

MAXI-THERM PIPING WITH A “MIXING VALVE” Usually, the maximum temperature of the outlet water will stay near the setting of the Maxi-Therm thermosta

Figure 12: Basic Domestic-Side PipingFigure 13: Domestic-Side Piping Using a Mixing Valve27

Figure 14a: Domestic-Side Piping Using a Recirculation Line (MT040G, MT050G)28Figure 14b: Domestic-Side Piping Using a Recirculation Line (MT079G, MT1

II. SPECIFICATIONSTable 1: SpecificationsI. PRODUCT DESCRIPTIONThe Crown MT series indirect water heater is designed to generate domestic hot water in

Figure 15: Domestic-Side Piping for Multiple Maxi-Therms29

The following general notes apply to all wiring:1) Wiring must be done in accordance with all codes. In the absence of any codes, the system must be w

Figure 16: Non-Priority Circulator Zoning Using Honeywell R845a’sFigure 17: Priority Circulator Zoning31

ZONE VALVES (2-WAY PRIORITY)Figure 19 is a connections diagram for a priority zone system using Honeywell V8043F motorized valves.An R8285B relay is u

33Figure 19: Zone Valve Wiring (2-Way, Priority)Note: Connect Zone Valve Port “A” toMaxi-Therm, Port “B” to Heating Zone,“AB” to boiler returnFigure 2

VIII. START-UP1) Make sure that the system is free of leaks and that air is purged from the system.2) After completing all domestic water connections,

IX. MAINTENANCE The Maxi-Therm is an extremely simple device and as such requires very little maintenance. There are, however,several items that sho

DANGER• Water temperature over 125°F can cause severe burns instantly or death from scalds.• Children, disabled and elderly are at highest risk of bei

XI. PARTS The following parts may be obtained from any Crown distributor. To find the closest Crown distributor consult thearea Crown representative

Parts - MT079G, MT100GKEY # PART DESCRIPTION CROWN P.N. QTY.1 THERMOSTAT (L4006A2114) 35-3200 12 3/4 SHORT WELL 35-1010 13 CLEAN OUT COVER 220005 14 C

3Figure 1b: MT079G and MT100G - General ConfigurationFigure 1a: MT040G and MT050G - General Configuration

39APPENDIX A: WHIRLPOOL SIZING1) If not already done, use one of the procedures in Part III to size a Maxi-Therm/boiler combination for allfixtures EX

Tel: (215) 535-8900 • Fax: (215) 535-9736 • www.crownboiler.comManufacturer of Hydronic Heating ProductsP.O. Box 14818 3633 I. StreetPhiladelphia

III. DESIGNING A MAXI-THERM SYSTEMIMPORTANTThe following procedures are used to size indirect water heaters based on the amount of hot water that will

METHOD A: “QUICK” RESIDENTIAL Table 2 shows some typical applications into which many “residential” applications can be classified. Thisprocedure wi

METHOD B: “DETAILED” RESIDENTIAL1) Record the total number of each type of fixture in column (c) of Worksheet 1. If a whirlpool (Jacuzzi) isinstalled,

SOLUTION: The completed Worksheet 1 for this example is shown in Figure 2. The Adjusted Peak HourDemand is 195 Gallons per Hour. From Table 1 we see t

8Figure 2: Completed Worksheet 1 and Boiler Output Graph From Example 1(a) (b) (c) (d)Shower:(3 GPM Head) 21.0 X =(5 GPM Head) 35.0 X1=35.0(7 GPM Head