冷水远传压力表7和热水远传压力表，分别检测自来水端和燃气锅炉热水端的水压，并把检测到的信号转变成电信号送到控制器，在控制器内通过比较这两路信号高低，产生一个压差信号输出到变频器，变频器控制增压泵的运行速度，使热水压力随时跟踪自来水压力，使两者一直保持平衡。另外，当房间的热水长时间不用时，管道内的水温必然降低，为此在热水系统中加装了一个循环泵，使热水一直保持循环状态，这样无论何时都可以实现恒温供热水

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CUTLER HAMMER HMCP015E0C 3P 15A AMP 600V-AC MOLDED CASE

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SQUARE D 999320 3P 20A AMP 600V-AC MOLDED CASE CIRCUIT 

SIEMENS ITE F63F250 TYPE F6 200A AMP TRIP MOLDED CASE C

WESTINGHOUSE MAGNETIC TRIP MOLDED CASE 3P 150A 600V-AC 

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ITE ET4060 FRAME F MOLDED CASE 3P 3A 600V-AC CIRCUIT BR

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ITE ET225 J FRAME 3P 225A AMP 600V-AC MOLDED CASE CIRCU

ABB UXAB 727131 R103 ES 3P 20A AMP 480V-AC MOLDED CASE 

ITE 3P 3A AMP MOLDED CASE CIRCUIT BREAKER B389733

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GENERAL ELECTRIC GE TED136100 3P 100A AMP 600V-AC CIRCU

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WESTINGHOUSE 1531787 AB DE-ION MOLDED CASE 3P 70A 600V 

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SQUARE D 999320 3P 20A AMP 600V-AC MOLDED CASE CIRCUIT 

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WESTINGHOUSE ED3030 MOLDED CASE 3P 30A AMP 240V-AC CIRC

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WESTINGHOUSE FB3015S 3P 15A AMP 600V-AC MOLDED CASE CIR

WESTINGHOUSE FDB3100 3P 100A AMP 600V-AC MOLDED CASE CI

WESTINGHOUSE BR330 TYPE 3P 30A AMP 240V-AC MOLDED CASE 

WESTINGHOUSE HFB3050L MOLDED CASE 3P 50A AMP 600V-AC CI

GOULD E63B020 ITE 3P 20A AMP 600V-AC MOLDED CASE CIRCUI

CUTLER HAMMER HMCP003A0C 3P 3A AMP 600V-AC MOLDED CASE 

WESTINGHOUSE FB3100L 3P 100A AMP 600V-AC CIRCUIT BREAKE

WESTINGHOUSE HFB3100 MARK75 3P 100A AMP 600V-AC MOLDED 

CUTLER HAMMER FDB3015L 3P 15A AMP 600V-AC MOLDED CASE C

WESTINGHOUSE HFB3100 MARK75 3P 100A AMP 600V-AC MOLDED 

CUTLER HAMMER FDB3015L 3P 15A AMP 600V-AC MOLDED CASE C

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HEINEMANN GB3-G3-DU HH83XA301 3P 26A 480V-AC MOLDED CAS

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WESTINGHOUSE FDB3015L FDB-14K 3P 15A 600V-AC MOLDED CAS

WESTINGHOUSE HFB3030L MARK75 3P 30A 600V-AC MOLDED CASE

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BRYANT BR330 TYPE BR HACR 3P 30A AMP 240V-AC MOLDED CAS

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WESTINGHOUSE HMCP025D0C 3P 25A CIRCUIT BREAKER W/ AUXIL

WESTINGHOUSE FB3125L MOLDED CASE SWITCH 3P 125A 600V-AC

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WESTINGHOUSE HFB3100L MARK75 3P 100A 600V-AC MOLDED CAS

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WESTINGHOUSE HFB3020L 3P 20A AMP 600V-AC MOLDED CASE CI

WESTINGHOUSE FB3030L MOLDED CASE 3P 30A AMP 600V-AC CIR

ITE EF2-B015 MOLDED CASE 2P 15A 600V-AC CIRCUIT BREAKER

WESTINGHOUSE FB3125L 3P 125A AMP 600V-AC MOLDED CASE CI

CUTLER HAMMER HMCP007C0C SER C MOLDED CASE CIRCUIT BREA

STOPCIRCUIT GMB 15U 2P 15A AMP 240V-AC MOLDED CASE CIRC

HEINEMANN GB3-G3 HH83XA-304 3P 15A 600V-AC MOLDED CASE 

WESTINGHOUSE EHB2030 2P 30A AMP 480V-AC MOLDED CASE CIR

SIEMENS ED63A003 3P 3A AMP 600V-AC MOLDED CASE CIRCUIT 

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WESTINGHOUSE FB3100? MOLDED CASE 3P 100A 600V-AC CIRCUI

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WESTINGHOUSE BAB3060H MOLDED CASE 3P 60A AMP 240V-AC CI

WESTINGHOUSE F3050 AB DE-ION MOLDED CASE 50A AMP 600V-A

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