Related Manuals for Dunkirk ARTESIAN 220
Summary of Contents for Dunkirk ARTESIAN 220
- Page 1 ARTESIAN 220 & 340 Instantaneous Indirect Water Heater By Dunkirk Boilers • INSTALLATION AND OPERATING INSTRUCTIONS • ENGINEERING MANUAL...
- Page 2 Manufacturer's Warning To reduce the possibility of injury due to scalding, a thermostatic mixing valve should be installed on all installations. Failure to do so will result in domestic water being delivered to the faucets at a temperature equivalent to the boiler water. All commercial installations requiring sustained water temperatures beyond 120°F, must label all fixtures alerting water users of a potential scalding hazard.
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Page 3: Table Of Contents
CONTENTS I. Product Description....................4 II. Specifications ......................4 III. Sizing A Water Heater For Installation..............7 Method A - Quick Residential................8 Method B - Detailed Residential................ g Method C - Commercial..................13 IV. Before Starting Installation ................19 V. Locating the Water heater..................19 VI. -
Page 4: Product Description
I. Product Description The Indirect water heater is designed to generate domestic hot water in conjunction with a hot water boiler using forced boiler water circulation. This indirect water heater consists of a plain steel tank in which three smooth copper coils are located. The tank surrounded by 2" of Poly - urethane foam insulation, which is surrounded by an enamel coated plain steel jacket. - Page 5 Page 5...
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Page 7: Method A: Quick Residential
Ill. Sizing The Hot Water Heater For Installation IMPORTANT The following procedures are used to size indirect water heaters based on the amount of hot water required during a given hour. In doing so, it is assumed that this demand will be spread out over the course of the entire hour. - Page 8 Method A: Quick Residential Sizing Method Table 4 shows some typical structures under which many single residence applications can be classified. This procedure will provide satisfactory results most of the time. Where greater accuracy is desired, use Method B. 1) Find the description that best fits the job and select the Water heater called for. Also, note the required boiler output under column (F).
- Page 9 Method B Detailed Residential Sizing Method Directions 1) Record the total number of each type to fixture in column (c) of worksheet 1. A shower head is installed over a bathtub, count both the bathtub and shower head although only one fixture will be used at a time.
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- Page 11 Method B - Detailed Residential Sizing Sample Calculations Example A water heater is to be installed with a new boiler. The residence has the following fixtures: Bath Bath #2 3 GPM Shower Head Vanity 30 Gal. Bathtub Vanity Kitchen Laundry Kitchen Sink Clothes Washer Automatic Dishwasher...
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- Page 13 IMPORTANT Do not attempt to use Method C to size a single-family residence. Method C: Commercial Sizing Method Directions 1) Table 5 and 6 show demands for various fixtures found in commercial buildings in gallons per hour. To determine the hot water requirements of the building: Using Worksheet 2, determine and record the total number of each type of fixture in the building under Column (2) b) Use Tables 5 and 6 to find the number of gallons of 140°F water used per hour per...
- Page 14 b) If the water heater is to be installed with an existing boiler, go to table 1 and select a water heater which has a 140°F first hour rating greater than or equal to the adjusted probable maximum demand calculated in1g. Note the boiler's gross output required to achieve the selected water heater's first hour ratings.
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- Page 16 Method C - Commercial Sizing Sample Calculation Example 2 This application is for a motel with 20 rooms. Each of these rooms has the following fixtures: (1) Vanity, (1) Shower and (1) Bath In addition, 5 rooms have an additional vanity. Also, there is a utility sink used by the staff for cleaning and a laundry with two machines Solution: Use Table 5 and the fixture count to complete the example worksheet in figure 3 (on next...
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Page 19: Before Starting Installation
IV. BEFORE STARTING INSTALLATION Table 7: Water Chemistry Requirements 1) Make sure that the planned installation is Water used in the water heater must have in accordance with all local codes. characteristics falling within the following limits: 2) Be certain the domestic water supply to the tank Characteristic Min. -
Page 20: Piping
V. Piping IMPORTANT All First Hour Ratings shown in this manual are based on the, minimum boiler water, flow rates shown in Table 1. Read this section for information on sizing piping and circulators for the water heater zone. Zone Design In designing the water heater zone piping system, the following points should be considered: 1) Circulator or Zone Valve Zoning? - Circulator zones are usually a better choice. - Page 21 3-Way Zone Valve System This system offers a simple method of prioritizing the tank (Diverting all boiler output to the tank when the tank thermostat calls for heat). In this system, a 3-way zone valve is used which has a common port a "normally open"...
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- Page 28 The function of the components shown are as follows: a) Control (required) - This control is provided by Dunkirk and must be installed in the location indicated. It is imperative that the bulb of the control is "bottomed out" in the control well.
- Page 29 Domestic Water Piping for Distant Fixtures in some cases, the furthest fixture may be quite distant from the water heater. In such an installation, there will be a slight delay before hot water reaches these distant fixtures. Even if all the fixtures are relatively close to the water heater, the building owner may want hot water at all fixtures as soon as they are opened.
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Page 33: Wiring
VII. Wiring The following applies to all wiring: 1) Wiring must be done in accordance with all codes. In the absence of any codes, the system must be wired in accordance with the National Electric Code (ANSI/NFPA 70-latest revision). 2) The entire system (boiler controls, water heater and heating zone controls) must be on its own circuit. - Page 34 Zone Valves (2 Way Priority) Figure 17 shows a connections diagram for a priority zone system using Honeywell V8043F motorized valves. An R8285B relay is used which is equipped with its own transformer and a set of D. P. D.T contacts. The water heater control is connected to terminals R and G on the R8285B so when the water heater control calls for heat, the relay coil is energized.
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Page 40: Start-Up And Check-Out
up and Check out VIII Start IMPORTANT IDENTIFY ANY LEAKS, BY TESTING, BEFORE PROCEEDING FURTHER. WARNING NEVER ATTEMPT TO FILL A HOT BOILER. 1) Be sure to purge all air from water heater and ancillary piping. 2) Be sure that all electrical wiring has been done according to the local codes. 3) Verify that all zone valves or circulators operate properly when their thermostats call for heat.