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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 

 

4.0        OPERATING INSTRUCTIONS 

 

NOTE:    PRIOR  TO  START  UP,  ANY  HEATER  OR  CONTROL  CABINET  WHICH  HAS 

BEEN  EXPOSED  TO  DUSTY,  WET,  AND/OR  HUMID  CONDITIONS  MUST  BE 
THOROUGHLY  CLEANED  AND  DRIED  OUT.    THE  BUILD  UP  OF  DUST  AND 
RUST  MAY  RESULT  IN  EXCESSIVE  DAMAGE  UNLESS  THE  FOLLOWING 
PRECAUTIONS ARE UNDERTAKEN

 

A.

 

All electrical components should thoroughly cleaned and dried, and checked 

for loose connections. 

B.

 

All  electrical  terminals  should  be  thoroughly  cleaned  and  dried,  then  hi-

potted or meggered to assure there are no shorts to ground. 

C.

 

Boiler  should  be  inspected  for  stray  objects,  metal  scraps,  etc.,  which  may 

have  accumulated  during  installation.    All  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  CONDITIONS  AS  STATED  ON  THE      BOILER   

NAMEPLATE ARE NOT TO BE EXCEEDED 

 
 

4.1

       

GENERAL 

The  following  section  of  this  manual  should  be  read  in  its  entirety  prior  to 

operating the boiler. 

 

 

 

4.2        PRELIMINARY CHECKS AND ADJUSTMENTS 

      4.2.1     Pressure Control  (Boilers supplied with proportioning step controls) 

A.

 

Pressure  Setting  –  Most  Model  STR  Boilers  are  provided  with  a 

proportioning  type  pressure  control  system  which  regulates  the  boiler 

output  to  match  the  system  demand.    This  control  should  be  set  at  the 

required operating  pressure  but  shall  not  exceed 90% of  the safety  valve 

Summary of Contents for STR

Page 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...

Page 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...

Page 3: ...lation 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...

Page 4: ...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 CAUTIO...

Page 5: ...NDED 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...

Page 6: ...ITATE 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 blowdo...

Page 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 setti...

Page 8: ...ple 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...

Page 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...

Page 10: ...e 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...

Page 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 transf...

Page 12: ...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...

Page 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 CONTAMINATI...

Page 14: ...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 d...

Page 15: ...r 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 Re...

Page 16: ...NT 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...

Page 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...

Page 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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