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Vapor Power International LLC

551 S County Line Road, Franklin Park, Il 60115

Phone: 630-694-5500 Fax: 630-694-2230

Instruction Manual

STR MODEL

‘RESISTO-FLO’

ELECTRIC BOILER

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Содержание RESISTO-FLO

Страница 1: ...Page 1 of 18 Vapor Power International LLC 551 S County Line Road Franklin Park Il 60115 Phone 630 694 5500 Fax 630 694 2230 Instruction Manual STR MODEL RESISTO FLO ELECTRIC BOILER ...

Страница 2: ... compact packaged unit requiring a minimum of electrical and plumbing connections at the jobsite When installed according to these instruction the boiler will provide years of reliable low maintenance service Review both the installation and electrical drawings thoroughly before installing this boiler A description of this boiler can be found in Bulletin 300 which is included at the end of this te...

Страница 3: ...llation drawing and also that it is in accordance with the minimum spacing specified on the UL label if provided CAUTION ALL BOILERS EXCEPT MODELS STR 1638 THRU 1654 ARE TO BE MOUNTED ON NONCOMBUSTIBLE FLOORING 1 2 MECHANICAL CLEARANCES The clearances shown below are required for perimeter servicing of the boiler Note Front clearance to be 42 if opposing wall is conductive 36 F R O N T 18 18 MODEL...

Страница 4: ...S Minimum thermal clearances should be maintained If the boiler is UL listed minimum clearances will be indicated on the UL Label Otherwise consult local codes and use good engineering judgement CAUTION THE BOILER ROOM TEMPERATURE SHOULD NOT EXCEED 30º C 86ºF WHICH SHOULD LIMIT THE TEMPERATURE WITHIN THE CONTROL CABINET TO A MAXIMUM OF 40ºC 104ºF ...

Страница 5: ...ENDED THAT ALL PIPING BE CHECKED FOR LEAKS BEFORE INSULATING 2 2 WATER SUPPLY AND CONDENSATE RETURN If a direct water feed is used ie no condensate return the main water supply must have a pressure at least 10 pounds greater than the maximum boiler operating pressure If a gravity feed condensate return is installed the return must have a head at least 1 1 times the boiler operating pressure psi 0 ...

Страница 6: ...LITATE DRAINING THE BOILER BY GRAVITY IE WITHOUT BOILER PRESSURE 2 3 1 SURFACE BLOWDOWN If the boiler is supplied with an automatic surface blow down valve pipe to a point common with the bottom blowdown piping 2 3 2 WATER COLUMN BLOWDOWN If the boiler is not supplied with a water column blowdown valve install such a valve on the bottom cross of the water column and pipe to a point common with the...

Страница 7: ... which must swing freely and point to the index mark on the case 2 7 HYDRO TEST Good practice as well as most local codes dictates that a hydro static test at a pressure equal to the safety valve setting of the entire boiler system be performed prior to boiler start up All leaks both boiler and piping should be stopped at this time NOTE SMALL LEAKS LESS THAN 2 DROPS PER MINUTE BETWEEN THE BODIES O...

Страница 8: ...iple conductors per phase be certain that phasing is correct and that circuits are not mixed before energizing the boiler 3 2 GROUNDING Connect an equipment ground minimum copper wire size is indicated on both the wiring schematic and the panel near the grounding lug to the grounding lug located within the control cabinet NOTE ELECTRICAL INSTALLATION MUST BE MADE IN STRICT ACCORD WITH 1 THE BOILER...

Страница 9: ... such materials must be removed from the boiler prior to start up D All power wiring connections should be checked to assure tight connections NOTE HYDRO STEAM INDUSTRIES AS MANUFACTURER OF THIS BOILER WILL NOT BE RESPONSIBLE FOR DAMAGES INCURRED AT THE TIME BOILERS ARE STARTED UP UNLESS THE ABOVE STEPS HAVE BEEN TAKEN TO ASSURE THE BOILERS ARE PROPERLY PREPARED FOR STARTUP NOTE MAXIMUM OPERATING ...

Страница 10: ...he vendor supplied literature provided at the rear of this manual 4 2 2 Pressure Control Boilers supplied with one or more non proportioning pressure controls Smaller STR boilers are provided with one or more independent pressure controls which switch on or off heating elements in accordance with their temperature setting The differential between the pressure settings should be set in accordance w...

Страница 11: ... customer s 120V branch circuit power switch if a control circuit transformer is provided remove both the primary and secondary fuses and jump a 120V power supply to the secondary of the control transformer A Switch the control circuit power on the switch should light to indicate that the control circuit power is energized B Circuits of heating elements will now be switched on by the step controll...

Страница 12: ...m water prior to their addition to the boiler The boil out can be accomplished per the following procedure 1 Remove all tools rags etc from the boiler 2 Remove steam outlet piping 3 Fill boiler to just below the handhole manhole with feedwater 4 Add the chemical solution thru the handhole manhole 5 Close handhole manhole 6 Fill boiler until water level is just below the steam outlet 7 Energize the...

Страница 13: ... establish a load on the boiler Individually check each element circuit to assure that each leg is drawing its rated current NOTE SOME POWER FUSES MAY BLOW AT STARTING DUE TO WATER OR OTHER CONTAMINATION ON THE ELEMENT TERMINALS SINCE THIS CONTAM INATION USUALLY BURNS FREE MERELY CHECK THE CIRCUIT FOR A SHORT AND THEN REPLACE THE FUSE IF A SHORT EXISTS HOWEVER REPLACE THE DEFECTIVE ELEMENT PER PAR...

Страница 14: ...d all circuits draw rated current no element tests are required If element failure is suspected the elements should be checked individually with an ohmmeter Grounded elements may require a Megger for detection of failure 5 2 CONTROL CIRCUITS 5 2 1 Pressure Limit Cutouts Check cutout action of pressure limit controls by adjusting below existing steam pressure The step control should reset to no loa...

Страница 15: ...er to the boiler 2 Drain boiler below level of flange containing defective element 3 Number and tag element wires and terminals to assure proper reassembly 4 Disconnect element wires to the flange 5 Remove flange from boiler nozzle 6 Remove buss bars nuts insulators and washers from the defective element 7 Remove compression nut which holds the element in the flange 8 Slide element through flange ...

Страница 16: ...ENT FLANGE ELEMENT TIGHTEN 70 FT LBS MAX BRASS 110 FT LBS MAX S S TIGHTEN ENOUGH TO BULGE RUBBER SEAT IN FLANGE 5 3 4 Probes Level probes should be periodically checked If there is any seepage between the conductor and its insulator or between the insulator and the compression fitting replace the probe 5 4 CLEANING THE BOILER Boiler should be drained and cleaned periodically to remove any accumula...

Страница 17: ...Page 17 of 18 Vapor Power International LLC 551 S County Line Road Franklin Park Il 60115 Phone 630 694 5500 Fax 630 694 2230 ...

Страница 18: ...Page 18 of 18 Vapor Power International LLC 551 S County Line Road Franklin Park Il 60115 Phone 630 694 5500 Fax 630 694 2230 ...

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