To Design Series-Loop Base-Ray® Installation –
1.Calculate the Heat Loss of each room using the procedure outlined in the I=B=R Heat Loss Calculation Guide No.
2.Using 210°F as design water temperature and 500 lbs/hr. as Àow rate, select length of
3.Locate
4.Layout Piping on Floor Plan as illustrated. Since the temperature of the water decreases progressively from the ¿rst Heating Unit to the Last Heating Unit on a circuit, the system should be laid out, if possible, so that the Heating Units with the hotter water are in areas such as the living room, bath and dining room. Heating Units in bedrooms, kitchen and similar areas should be located on the end of the loop.
5.Measure length of Circuit (horizontal and vertical) from boiler supply to boiler return (include
6.Knowing the
TABLE A |
| TABLE B |
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Btu/Hr. Output of | Total | Btu/Hr. Output of | Length of | |
Length of | Longest | |||
Assemblies Each | Assemblies All | |||
Loop Ft. | Loop - Ft. | |||
Loop | Loops | |||
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40,000 | 100 | 50,000 | 240 | |
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35,000 | 135 | 55,000 | 210 | |
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30,000 | 175 | 60,000 | 165 | |
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25,000 | 260 | 65,000 | 140 | |
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| 70,000 | 120 | |
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NOTE: Table based on 20°F | NOTE: Table based on head | |||
developed by Standard ¾" or | ||||
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Drop through Circuit - ¾"
1" circulator - 20°F Drop
piping
through system.
If, for a given output, the total length of the loop exceeds the values shown in TableA, the loop may be split into two circuits
–see Illustration. Check
For Piping Arrangements and Design conditions other than those given above, follow procedure outlined in I=B=R Instal- lation Guide No. 200.
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