Reimers ELECTRA STEAM HLR 120­-180kW Hydronic Boiler Instruction Manual

Reimers ELECTRA STEAM SRHC­20­120 Steam Boiler

SR20‐120 STEAM BOILERS

Features

• Maximum design 100psi, 250°F

• Maximum operating 85psi, 235°F

• All boilers are manufactured in accordance with the requirements of the A.S.M.E. Boiler and Pressure Vessel Code and A.S.M.E. CSD‐1. Each boiler bears the Naonal
  Board Stamp “H”.

• Shell fiberglass insulation thickness minimum 2″.

• Power range 120kW ‐ 180kW with up to 6 heating stages, depending on model.

• Heating stages managed by digital step controller.

Standard Equipment of Each Boiler Includes:

• A.S.M.E. pressure relief valve
• One (1) quick opening boiler bottom blow off valve as per A.S.M.E. Code B31.1
• ½” NPT Bronze steam outlet ball valve
• High pressure feed pump in RBH‐ and RBHC‐models
• Low water cutoff control with manual reset
• One (1) high pressure cutoff control with manual reset
• One (1) operating pressure control
• Magnetic contactors
• Main supply power distribution block
• Indicator  lights  for  POWER,  REFILLING,  HEATING,  ALARMS  and  Automatic  Boiler Blow off Status
• Pressure and water level gauge

Applications

• Space Heating
• Tank Heating
• Water Source Heat Pumps
• Swimming Pools
• Bio‐Diesel Reactors
• De‐Icing

(*) DIRECT STEAM APPLICATIONS TO FOOD PRODUCTS: Reimers offers stainless steel boilers or #OPT1030 Brass/Bronze free boiler trim option (see Page 5). This
alone does not guarantee the production of culinary grade steam. Applicable safety standards (i.e. 3‐A T609) must be considered.

Model Number Key

Example: HLR180K3B = HLR‐Series hot water boiler, 180kW heating power, power supply 480V, 3ph, safety valve set to 30psi

1. Each  boiler  model  requires  two  (2)  power  supplies: Primary heating power and secondary control voltage. Nominal control voltage is 120V, 50/60Hz. Boiler models rated for 380V and 415V are equipped with control voltage transformers that require 220/240V applied to their primary side in order to provide the 120V AC control voltage to the boiler. As an option, all boiler models can be equipped with control voltage transformers so that only the heating power supply needs to be connected to the boiler.

Please note that all information provided within this brochure is approximate and subject to change without notice. Please contact Reimers Electra Steam, Inc. with any questions regarding the specifications or dimensions detailed within.

LIMITED WARRANTY – STEAM GENERATORS

Reimers  Electra  Steam,  Inc.  warrants  the  following  products  of  its own  manufacture  against  defects  in  materials and workmanship under normal use and service. This warranty is in lieu and excludes all other expressed or implied warranties or merchantability of fitness for any particular use. No person is authorized to extend the terms of this warranty or assume any other liability except by written statement signed by an officer of Reimers Electra Steam, Inc. Clear Brook, Virginia 22624.

WARRANTY PERIOD
The  pressure  vessel  and  electrical  &  mechanical  components  are warranted  for  one  year  from  date  of  shipment from Reimers Electra Steam, Inc. in Clear Brook, VA 22624.

LIMITATIONS
Products must be installed, used and maintained in accordance with our instructions, including reasonable & necessary  maintenance  by  the  user. Users  are  responsible  for  the  suitability  of  the  products  to  their application. There is no warranty for damage resulting from improper installation, abuse, power failure, fire, flood, lightening, improper water, misuse, improper specification, misapplication or other operating conditions beyond our control or parts that are normally expendable in usual course of operation.
Claims  against  carriers  for  damage  in  transit  must  be  filed  by  the buyer.    Reimers  liability,  if  any,  will  not  exceed the price of Reimers products claimed to be defective.
Components  manufactured  by  any  supplier  other  than  Reimers  shall  bear only  that  warranty  made  by  the  manufacturer of that product and service for that warranty shall be the responsibility of that manufacturer and not Reimers.

REMEDY
Claims under this Limited Warranty must be made by obtaining a Return Authorization Number from our office (PHONE:  540­662­3811,  FAX: 540­665­8101)  &  returning  the  defective  part,  freight  prepaid  to: Reimers  Electra Steam, Inc., 4407 Martinsburg Pike, Clear Brook, Virginia 22624
Defective items will be repaired or replaced as necessary within a reasonable time without charge, other than incidental charges such as freight prepayment. Such repair or replacement within a reasonable time is the exclusive remedy available from Reimers Electra Steam, Inc., under this Limited Warranty.

CONSEQUENTIAL DAMAGES
Reimers Electra Steam, Inc., is not liable for labor costs incurred in the removal, reinstallation, or unauthorized repair of product, or for damages of any type whatsoever, including incidental and/or consequential damages.

THIS WARRANTY SUPERSEDES ALL PREVIOUS WARRANTIES.

Read this manual before installing and using this product. Failure to do so can result in serious injury or death.
You have just purchased a quality steam boiler designed to the ASME Boiler Code and registered with the National Board of Boiler Inspectors. Treat this industrial equipment with care and respect. It is safe when installed, maintained, and used properly. Read the instruction carefully and contact the factory if you have any questions.

WARNING
Read this manual before installing and using this product.
Failure to do so can result in serious injury or death.

Your boiler should be marked with a complete set of WARNING/CAUTION labels shown below. If one of these labels is missing, please contact our factory immediately.

US and All Other Non­ Francophone Countries Canada and All Other Francophone Countries

Located on electrical enclosure door

Located on end caps of cylindrical boiler pressure vessel jacket

Located on end caps of cylindrical boiler pressure vessel jacket

This manual contains safety messages. Each of the safety messages are preceded by one of the following signal word panels:

DANGER: Safety messages preceded by this label contain information, that if not followed will result in death or serious injury.
WARNING: Safety  messages  preceded  by  this  label  contain information,  that  if  not  followed  could  result  in  death  or  serious injury.
CAUTION: Safety  messages  preceded  by  this  label  contain information,  that  if  not  followed  could  result  in  minor  or  moderate injury.
NOTICE: Messages preceded by this label contain important information, but are not hazard related.

Ensure that this manual is available to the boiler operator at any time.

Read carefully all safety labels attached to the boiler. If any safety label was damaged during shipment, contact the factory immediately:
Ph. 540­662­3811; e­mail: sales@reimersinc.com

Important Safety Information

WARNING

1. BLOWDOWN VALVE: This valve is utilized to blow impurities from the boiler chamber. When opened, a large volume of hot water and steam is discharged. Ensure that this valve is properly piped for such discharge. State and local codes must be met as applicable.

2. ELECTRICAL: All field wiring to the boiler must be in accordance with the National Electric Code and any local codes that may apply. Wiring must be made by a competent certified electrician. Use copper wire only.
   Ensure  that  all  electrical  components  are  in  a  dry  location,  free from  any  possibility  of  water  soaking.  Electric  foot  switches  when supplied must not be placed on a wet floor. They must be placed on dry surface, not subject to steam or water.

3. GAUGE GLASS: The gauge glass protector guards must be on at all times. When replacing the glass, be sure that the unit is not under pressure and is cool to touch. The gauge glass should be replaced once per year. If cracks or wear is evident, replace the gauge glass immediately.

4. MODIFICATION/MISUSE: This boiler has been designed and constructed in accordance with the ASME Boiler and Pressure Vessel Code. Any modification or misuse can result in a dangerous situation. Reimers Electra Steam, Inc. is not liable for any product that has been modified or improperly used.

5. PRESSURE GAUGE: The pressure gauge indicates the internal pressure of the boiler. It can fail. Periodically have your boiler inspector compare the gauge with a known gauge utilizing the test valve arrangement provided

6. REGISTRATION: Most states and cities require boiler registration and inspection. Check with your government authorities.

7. INSTALLATION AND REPAIR:
   Installation and repair work of this unit must be performed only by experienced personnel. Before commencing a repair, ensure that the boiler is cold, not pressurized and electrically disconnected. All standard electrical and steam safety precautions must be taken during testing.

8. SAFETY   VALVE:   The  safety  valve  is  designed  to  discharge  hot  steam  when  the  set  pressure  is  exceeded.    Ensure  that  the discharge port is pointing toward the back of the unit away from the operator or any aisles. Test the safety valve periodically to ensure that it is operating properly. Test carefully at full pressure by lifting lever using pliers and let it “slapping” shut. Steam discharge can scald. Ensure no one is exposed.

9. STEAM INSTALLATION:
   Steam piping must be of black pipe, not galvanized. Work must be done by an experienced steam fitter. All state and local codes must be met as applicable.

10. WATER:   Ensure  that  all  electrical  components  are  in  a  dry  location,  free  from  any  possibility  of  water  soaking.    Electric  foot switches when supplied must not be placed on a wet floor. They must be placed on dry surface not subject to steam or water.

Installation

REIMERS ELECTRA STEAM, INC. boilers are heated by one or more immersion type heating elements. Automatic controls are provided to maintain pre­set operating pressure and proper water supply. Safety features include automatic low water cutoff, automatic pressure control, safety valve and visible water level gauge. Each boiler is manufactured in accordance with  the ASME  Power Boiler  Code  Standards  and  is  individually  inspected  and  stamped  by an  authorized  National  Board  Insurance Inspector. All boilers are registered with the National Board of Boiler and Pressure Vessel Inspectors. When boiler is received, make sure it has not been damaged in shipment.

NOTE:
ASME DATA PLATE IS LOCATED ON END OF PRESSURE VESSEL BEHIND LABEL STAMPED WITH NATIONAL BOARD NUMBER OF UNIT.
When boiler is received, make sure it has not been damaged in shipment.

Location

Place the boiler in a level position, close to the equipment which it is to supply. This will insure minimum heat losses and allow more economical piping arrangements. All steam lines should be insulated. Review the overall dimensions of your boiler model on page 6 to select proper boiler location.
Regardless of the NFPA­70 working space requirements shown below, provide a minimum of 3ft clearance on both sides of the boiler for element servicing, 3ft of clearance to the front of the boiler and 1.5ft to the rear of the boiler.

• Working space:
  Electric boiler spacing is dictated by NFPA­70, Table 110.26 as follows:

Note: Where the conditions are as follows:

Condition 1 — Exposed live parts on one side of the working space and no live or grounded parts on the other side of the working space, or exposed live parts on both sides of the working space that are effectively guarded by insulating materials.
Condition 2 — Exposed live parts on one side of the working space and grounded parts on the other side of the working space. Concrete, brick, or tile walls shall be considered as grounded.
Condition 3 — Exposed live parts on both sides of the working space.

• Dead­ Front Assemblies. Working space shall not be required in the back or sides of assemblies, such as dead­ front switchboards or motor control centers, where all connections and all renewable or adjustable parts, such as fuses or switches, are accessible from
  locations other than the back or sides. Where rear access is required to work on non­electrical parts on the back of enclosed equipment, a minimum horizontal working space of 762 mm (30 in.) shall be provided.

• Alcove or closet installation per UL834: Proper location of this boiler model with regard to combustible and noncombustible surfaces and materials is coded on the boiler name plate. The following decoding sketch and description is provided for the user information:

Description of dimensions and symbols

• A – Clearance above top of boiler

• B – Clearance from front of boiler
  Prefix C to numeral indicates suitability for closet or alcove installation
  Prefix A indicates suitability for alcove but not for closet installation

• D – Clearance from back of boiler

• EL – Clearance from left side of boiler

• ER – Clearance from right side of boiler

• F – Indicates type of flooring: “NC” for noncombustible floor / “C” for combustible floor. Numeral indicates minimum clearance below suspended units to combustible floor

Heating Loop Piping

Piping:  This  hot  water  boiler  is  intended  to  be  used  in  a  closed pressure system with a circulating hot water pump. The boiler safety relief valve can have settings from 30 and up to 150psig. The expansion tank must be sized to meet the ASME standards for the overall water capacity of your heating system. The circulating system should also include an  air  trap  and bleed,  as  well  as  automatic  water  fill. The  water inlet and outlet are located on top of the boiler as shown in FIGURE 2.
Recommended heating loop piping size, depending on the boiler heating power:
HLR210 – HLR300: 3″ NPS
HLR330 – HLR510: 4″ NPS
Install stop valves as close as possible to the boiler supply­ and return ports (FIGURE 2).

In  order  to  ensure  long  term  trouble­free  boiler  operation,  we recommend that the water used as boiler feed water to be tested for hardness. If the water in your area is harder than  1grain  (17mg/L),  use  a  water softener.  The  main  cause for premature heating element failure in electric steam boilers is water hardness. If severe corrosion during inspection  of the  pressure  vessel  as  indicated  in  chapter  3.4 of this manual becomes evident, additional tests of your boiler feed water must be performed. A water analysis should  be  performed  by  a  qualified  and  recognized  water treatment company located in your area.
Recommended levels for boiler feed water: ****

Recommended  levels  for  boiler  water  (water  inside  pressure vessel when boiler is operating)

NOTICE: Do not add any chemicals to the boiler feed water unless specifically recommended by a qualified and recognized water treatment company.

Safety Relief Valve

The safety valve is designed to discharge hot steam when the  set  pressure is  exceeded.  Ensure  that  the  discharge  port is pointing toward the back of the unit away from the operator  and  any  aisles.  If  it  is  required that  discharge  piping be installed from the safety valve, the pipe should not  be  smaller  than  the  valve  outlet  and  should  be  rigidly supported so as not to place weight on the valve itself. Important: No valve in this line!
FIGURE 2

Electrical

Install a fused disconnect switch near the boiler. It should be fused as marked on the boiler name plate. Connect the power supply from the disconnect switch to the terminals in the boiler control panel. A copy of the wiring diagram is in the control panel.

Important: Electrical connections to the boiler control panel (FIG.  3) should  be  made  by  a  qualified  Electrician.  All  wiring must comply with local electrical codes.
All  boiler  models  that  are  equipped  with  a  transformer  option (OPT1010 or OPT1011) do not require a separate external control voltage power supply.

Operation

Boiler Startup

• a. With all power disconnected, check the control panel for loose wires caused by vibration in shipping. Review installation instructions to be sure boiler FIGURE 2 is properly wired and installed.
• b. Be  sure  that  the  boiler  drain  valve  is closed
• c. Fill the system with water
• d. Ensure  that  the  selector  switch  is  in OFF ­position (middle position)
• e. Turn  on  the  control  voltage  power supply
• f. Turn the red POWER switch to the ON­ position
• g. Start  the  circulating  pump,  or  pumps  by  throwing  the selector switch of the boiler controller into the PUMP­ position. With pump running, bleed air from system and check entire system for leaks.
• h. This  hot  water  boiler  is  equipped  in  its  standard configuration with one temperature sensor, placed inside the boiler pressure vessel near the water outlet nozzle. It senses the water temperature as it exits the boiler. For space heating applications that require outdoor reset, a second sensor can be easily connected to the boiler controller in the field.

NOTE:   For  all  boilers  equipped  with  the  Honeywell  T775P2003 controller (standard configuration), please continue  reading  this paragraph.  For  all  boilers  equipped  with the BACnetTM enabled controller, model OPT­HLR­BMS, please refer to the separate instruction manual that comes with the boiler.

The Honeywell controller T775P2003 was set at the factory with  its parameters  as  shown  below  and  to  the  operating  water temperature as ordered:

Honeywell Controller T775P2003 Setup:

1. Entering Setup Mode: Press and hold the MENU button for 5 seconds to display the Setup menu

2. Setting up the Sensors:

3.  # of Sensors = 1

4. Sensor A

5. UNITS = DEG F

6. CALIBRATE = 0.0°F

7. LABEL = BOILER A

   EXIT

8. SENSOR B = Not set, unless outdoor reset sensor connected to controller

9. SENSOR C: Not used
   EXIT

10. Setting up the Outputs

11. Number of STAGES = 4

12. SCHEDULE = NO

13. OPTIONS

14. RESET = NO, unless outdoor reset sensor is connected to controller

15. INTEGRAL = 0 sec.

16. DERIVATIVE = 0 sec.

17. ON DELAY = 0 sec.

18. OFF DELAY = 0 sec.

19. WWSD = NO

20. LEAD LAG = FOFO

21. DI OPTIONS = DISABLE

22. SHOW RT = NO

    EXIT

23. Setting up the Stages = Not set

    EXIT

24. Setup Alarms = Not set

    EXIT

Honeywell Controller T775P2003 Setting Operating Parameters:
PROGRAMMING OUTPUT STAGES WITH NO RESET

1. Entering Program Mode: Press the MENU button, then select  PROGRAM  and  press  the  >  button  to  view  the  Program menu.
2. SETPOINT  =  Set  value  to  desired  heating  loop  temperature
3. THROTTLING RANGE = recommended range 15 – 25°F
4. SENSOR = Not set
5. HEAT/COOL = HEAT

EXIT
EXIT

To set the boiler controller for reset mode, please refer to the  Honeywell T775P2003  boiler  controller  manual  that  is  attached to this manual.

• i. Turn the three phase power supply ON
• j. Turn the selector switch into the HEATING ­position

Boiler Operation, Sequence of Events

• a. As soon as the selector switch is in the HEATING ­position and the Room/Process thermostat calls for heating:
  Both lights remain ON as long as  the  Room/Process  thermostat calls for heating.

• b. Depending  on  the  difference  between the  programmed  temperature  set  point and  the  actual  temperature  in  the  boiler pressure  vessel,  the  boiler  controller  will start  energizing  heating  stages.  The energized heating stages are indicated in the controller display as black dots.

• c. The  actual  temperature  of  the  boiler  is  shown  in  the middle portion of the display. To change the FIGURE 6 set point, follow the instructions above (Honeywell  Controller  T775P2003  Setting Operating Parameters)

• d. Various  status  messages  may  be  shown in  the  lower  portion  of  the  boiler  controller display. As  long  as  the  thermostat  calls  for heating, DI = OFF, when the thermostat does not call for heating, DI = ON. e. As  soon  as  the  temperature  in  the pressure  vessel  approaches  the programmed set point temperature, the boiler controller will begin to step out heating stages.
  If  the  actual  temperature  in  the  pressure vessel  (temperature indicated  on  the temperature gauge) is higher than the programmed temperature set point, then the throttling  range  must  be  increased.  If the actual  temperature  in  the  pressure  vessels swings  too  high  over the  programmed  set  point,  the  high temperature safety limit control(s) may trip.

Low Water Cut­ Off Function
The  low  water  cutoff  function  of  the  boiler  control  de­energizes the heating elements when the water level in the boiler pressure vessel falls below the minimum acceptable operating  level.  The  control  senses  the water  level  in  the  boiler pressure vessel through a probe. When the tip of the probe  is  in  contact  FIGURE 7 with  water  in  the Low water cut­ boiler,  the  boiler  operates  normally.  off probe When the water level in the  boiler  falls  below the tip of the probe  the  control  senses that water level  is  low.  The  control will not de­energize the heating elements when  the  probe  loses  contact Bleeder Valve with  the  boiler  water  for short periods of time. But, when the probe loses contact with the probe for a set time, the control de­ener­gizes the heating  elements  and  turns  on  the “LOW  WATER”  boiler  alarm light. Boiler operation can only be resumed after determining why water level is low, restoring normal water level  in  the boiler  and  pressing  the  “LOW  WATER”  reset  button. After pressing the “LOW WATER” reset button the alarm  light  “LOW  WATER”  turns  off,  the lockout  is  reset  and the heating elements are energized.

High Temperature Cutoff Function
As soon as the water temperature in the boiler reaches the high  limit setting,  the  heaters  and  the  HEATING ­light  will  turn off. This may occur when the system is brought up from  cold  to  fully  heated  condition. In  this  case,  increase  FIGURE 8 the  throttling  range  as  described above.  However,  if  the  high  limit  control actuates repeatedly it would indicate  that  the  water  temperature setting is too close to  the  HI limit setting.  Check  these settings and increase the difference  between  them. Each  boiler  is  equipped  with two high limit temperature  safety  limit controls: One  automatic  reset  control,  set  to  a  lower cut­off temperature and one  manual  reset  control,  set  to  a higher cut­off temperature. If the  automatic  reset  control  trips,  the HEATING light on the front panel  of  the  boiler  controller  turns  off  and all heating stages  turn  off immediately.  If  the  manual  reset  control  trips,  then the  HEATING  light  on  the  front  panel  of  the  boiler  controller  turns off,  the  HIGH TEMPERATURE alarm light will turn on and all heating stages turn off immediately.

Boiler Maintenance

WARNING Do not add any chemicals to the boiler feed water unless specifically recommended by a qualified and recognized water treatment company.

Frequency: During boiler installation, 90days after

Re­ Tightening the Electrical Terminal Connections inside the Electrical

Enclosure and Pressure Vessel Jacket

Boiler installation and then annual
Re­tighten the terminals of the contactors, fuse blocks and heating  element terminals  inside  the  electrical  enclosure  and pressure vessel jacket, following the maximum torque values listed below:

Component      Maximum Torque

• 50A­Contactor ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 25 in*lb
• 75A­Contactor ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 45 in*lb
• Fuse Block ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 45 inlb Element Wires to Copper Lugs ­­­­­­­­­­ 20 inlb
• Copper Lugs to Element Terminals ­­­­­­ 12 in*lb

Testing the High Temperature Cut ­Off Devices

• Frequency: Once every six months
  For  this  test,  the  boiler  temperature  should  be  near  the  boiler temperature setpoint and at least one heating stage energized.

Testing  the Automatic  Reset Temperature  High  Limit  Safety Control

• Read the current boiler operating temperature setpoint ­ Read and memorize the current setting of the automatic reset temperature high limit safety control
• Turn the dial of the temperature control towards the boiler temperature  setpoint  until  all  energized  heating  stages turn off together.
• Turn  the  dial  of  the  temperature  control  to  its  initial position.  The  heating  stages  should  energize  staged  in  accordance with the programmed ON­ delay time in the Honeywell step controller

Testing  the  Manual  Reset  Temperature  High  Limit  Safety Control

• Read the current boiler temperature  boiler  operating  temperature setpoint
• Read and memorize the  current  setting  of  the  manual  reset temperature high limit safety control
• Turn the dial of the temperature control towards the boiler  temperature  setpoint  until  all  energized  heating  stages  turn off together. The HIGH TEMPERATURE alarm indicator light in the boiler controller panel should be ON.
• Turn  the  dial  of  the  temperature  control  to  its  initial  position.  Press  the  red  RESET  button.  The  heating  stages should energize staged in accordance with the programmed  ON ­delay  time  in  the  Honeywell  step  controller

Testing the Safety Relief Valve

CAUTION
Before testing, make certain that the discharge pipe is properly connected to the valve outlet and arranged to contain and safely dispose of boiler discharge.

Frequency: Under normal operating conditions  test  valve  every  two (2)  months. Under severe service conditions  or  if  corrosion  and/or deposits are noticed within the valve body,  testing  must  be  performed more often. A test must also be performed  at  the  end  of  any  non­service period.

Test  the  safety  relief  valve  (preferably near its maximum pressure setting by holding the test lever  fully  open  for  at  least  5  FIGURE 9 seconds to flush the valve seat free of sediment and debris. Then release and permit the valve to snap shut.

Element Inspection, Replacement, and Element Cleaning

WARNING
Maintenance work must be performed by experienced personnel only. Ensure boiler is cold and drained and has no pressure or electricity.

• Close the water inlet and outlet stop valves (FIGURE 10) ­ Turn off and lock out all boiler power supplies

• Ensure that the boiler drain valve (FIGURE 10) is piped  to a safe point of discharge

• Open  the  boiler  drain  valve  carefully  and  drain  the pressure vessel. As soon as there is no pressure present in the vessel, open the bleeder valve (FIGURE 7) slightly to break the vacuum

• Water Inlet and Outlet Stop Valves are not provided with the boiler

• Remove  the  left  pressure  vessel  jacket  end  cap  to  access the heating elements
• Label the wires of heating elements and disconnect from  the terminals
• Remove  the  four  (4)  nuts  from  each  heating  element  flange  and  pull  the  elements  slowly  out  of  the  pressure  vessel
• Inspect  and  if  necessary  remove  with  a  stiff  wire  brush  rust, calcium or other deposits from the element rods
• Insert a flash light through one heating element opening  and inspect through the second opening the inner walls of the pressure vessel. It is normal that the inner walls of the vessel be covered by a layer of red, brown or black  surface  and  layers  of  rust  peeling off the surface are an  indication  for  severe  corrosion. In such case, contact  a  water  treatment  company.

• Install the heating elements back into the boiler pressure  vessel, following the above procedure in reverse order.
  After  installing  the  pressure  vessel  jacket  end  cap,  turn  on all power supplies of the boiler.

• Flip the red POWER switch of the boiler controller to the ON ­position  and  leave  the  operating  mode  selector  switch in the middle (OFF­ position)

• Observe  the  LOW  WATER  alarm  light  in  the  boiler  controller front panel. If it turns ON, the low water cut­off device works properly.

• Close  the  boiler  drain  valve,  open  the  inlet  and  outlet  valves  and  with  the  bleeder  valve  open,  refill  the  boiler  pressure vessel. Close the bleeder valve as soon as it discharges water.

• Press  the  LOW  WATER  RESET  switch.  The  LOW  WATER alarm light should turn OFF.

• The hot water boiler should be ready for operation.

Testing the Low Water Cut­ Off Device

Testing the Electronic Low Water Cut ­Off Device Only Frequency: Any time.

• Press and hold the LOW WATER CUT­OFF TEST switch  on the boiler controller panel After 3 seconds, the HEATING indicator light – if it was  ON  –  will  turn  OFF;  the  LOW  WATER  alarm  indicator  light will turn ON Press the LOW WATER RESET switch to de­activate the  LOW WATER alarm

Testing  the  Entire  Low  Water  Cut­ Off  System  (Electronic Low water Cut­ Off Device + Low Water probe) Frequency:
90 days after installation, then once every year

• Flip  the  boiler  operating  mode  selector  switch to the middle (OFF ­position)

• Close  the  water  inlet  and  outlet  stop  valves (FIGURE 10)

• Turn  off  and  lock  out  all  boiler  power  supplies Ensure  that  the  boiler  drain  valve  (FIGURE 10) is piped to a safe point of discharge

• Open  the  boiler  drain  valve  carefully  and drain the pressure vessel. As soon as  there  is  no  pressure  present  in  the  vessel, open the bleeder valve (FIGURE  7)  slightly  to  break  the  vacuum.

• Flip the red POWER switch of the boiler controller to the
  ON ­position  and  leave  the  operating  mode  selector  switch in the middle (OFF ­position)

• Observe  the  LOW  WATER  alarm  light  in  the  boiler  controller front panel. If it turns ON, the low water cut­off device works properly.

• Close  the  boiler  drain  valve,  open  the  inlet  and  outlet  valves  and  with  the  bleeder  valve  open,  refill  the  boiler  pressure vessel. Close the bleeder valve as soon as it discharges water.

• Press  the  LOW  WATER  RESET  switch.  The  LOW  WATER alarm light should turn OFF.

• The hot water boiler should be ready for operation.

Troubleshooting

WARNING Ensure that the boiler is cold and has no pressure.
Electrical trouble shooting must be performed by a qualified electrician.

If trouble shooting did not resolve problem, please contact our service technicians at:
Phone: 540­662­3811
Email: techsupport@reimersinc.com

Parts list for HLR 120­180

WARNING
Use Reimers replacement parts. All components are designed and approved to be used in this Underwriters Laboratories listed and ASME National Board Stamped boiler. Failure to do so may cause serious injury or death.

NOTE: When ordering parts, please give boiler Model and Serial Number and detail shipping instructions.

Reimers Electra Steam, Inc.  03/28/2022

SR 20‐120 Manual

References

• Reimers Electra Steam – Electric Boiler Manufacturer

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