Dunkirk ARTESIAN 220, Инструкция по установке и эксплуатации

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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.
2) For each line, multiply the quantity entered in column (c) by the corresponding number in column
(b). Enter the result in column (d).
3) Total column (d). This is the PEAK HOUR DEMAND
4) Multiply the Peak Hour Demand by 1.20. This is the adjusted peak hour demand
5) Select the water heater based on:
a) If a new boiler is to be installed with the Artesian:
* Go to table 1 and select a water heater which has a 140°F first hour rating greater than or
equal to the adjusted peak hour demand calculated on work sheet 1.
* Refer to required boiler output in Table 1. Record the required boiler output (heating
capacity) for the selected water heater in your work sheet.
* Determine the boiler required to satisfy the space heating requirement alone by
multiplying the space heating load by 1.15. Record this, as the boiler heating capacity
required for space heating in your work sheet.
* Select the boiler with the larger of the above two heating capacities.
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 peak hour demand calculated above.
If the required boiler output for the selected water heater is greater than the heating
capacity of the existing boiler; the existing boiler is too small.
6) If a Whirlpool is on the job, see Appendix A.
7) Designing the water heater zone system. Refer to Table 1 for minimum boiler water flow, and
circulator sizing. For further information on zone systems refer to figures 4-9.
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