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INSTALLATION AND SERVICE MANUAL 

Electric Power Water Heater

 

        12kW – 162kW 

NOTE: retain this manual for future reference 

Installation  and service must be performed  by Qualified Service Personnel Only.

 

 

WARRANTY: 

 

Factory  warranty (available on web site)  does  not apply to units improperly installed or improperly operated. 
 
Experience  has shown that improper  installation or system design, rather than faulty equipment, is the cause of 
most operating problems. 
 
Excessive  water  hardness  causing  a  lime/scale  build-up  in  the  heater  and/or  on  the  immersion  heating 
elements is not the fault of the equipment and  is  not  covered  under  the  manufacturer's  warranty.  (See  Water 
Treatment and  Water Chemistry) 

Do  not  energize  electrical  system before  heater is completely  filled with  water. Damage  caused to the 
immersion  heating  elements by dry fire is not  covered  under  the  manufacturer's  warranty.  Follow  start up 
procedure in the manual. Water  heater corrosion and  component failure caused  by  air-borne  chemical  vapors 

is  not covered under the manufacturer's  warranty. Corrosion damage caused by current leakage due to 
improper  grounding  of  electrical  systems  or electronic  components to  the  storage  tank and related  piping 
is  not  covered  by  the manufacturer's warranty. Under no circumstance  will the manufacturer  be liable for 
consequential damages resulting  from the installation or use of this equipment. Correct  installation procedures 
and local codes must be adhered to. 

 

SPECIAL INSTRUCTIONS TO OWNER: 

WARNING: 

Improper Installation, Adjustment, Alteration, Service or Maintenance can cause injury or 

property damage. Refer to this manual. For assistance or additional information consult a qualified 

installer, service agency or the electric utility

 

CHECKING EQUIPMENT: 

This  manual  supplies  information  for the installation, operation  and servicing of the appliance.  It is strongly 
recommended  that  this manual  be  reviewed completely  before proceeding  with  an installation.  Upon receiving 
equipment,  check for signs of shipping damage. Pay  particular  attention  to  parts  accompanying the water heater, 
which may show signs of being hit  or  otherwise  being  mishandled.  Verify  total  number of  pieces shown  on 
packing slip  with those actually received.  In case there is damage or a shortage, immediately notify carrier. 

DO NOT USE THIS APPLIANCE IF ANY PART  HAS  BEEN  UNDER  WATER.  THE POSSIBLE 

DAMAGE  TO  A FLOODED APPLIANCE  CAN  BE EXTENSIVE  AND PRESENT NUMEROUS 

SAFETY HAZARDS. ANY APPLIANCE  THAT HAS BEEN UNDER WATER MUST BE REPLACED. 

 

Summary of Contents for VR-1000-(kW)

Page 1: ...ronic components to the storage tank and related piping is not covered by the manufacturer s warranty Under no circumstance will the manufacturer be liable for consequential damages resulting from the installation or use of this equipment Correct installation procedures and local codes must be adhered to SPECIAL INSTRUCTIONS TO OWNER WARNING Improper Installation Adjustment Alteration Service or M...

Page 2: ...is manual is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance 3 ...

Page 3: ...mersion Thermostat 13 Temperature Regulation 13 Risk of Scald Warnings 14 Temperature Control Sequencer 14 Display 16 Temperature Adjustment 17 Error Messages 18 Temperature Limit Control 18 Immersion Heating Elements 19 Safety Door Lock 19 Low Water Cut Off 20 Low Water Pressure Switch 20 High Water Pressure Switch 20 Manual Limiting Switches 20 Time Clock 21 Pilot Lights 21 Alarm Bell 21 Start U...

Page 4: ...ty Codes that apply to this installation Consult local codes officials and electric utility company to authorize and inspect all field installed electrical connections CAUTION Be sure to turn off power when working on or near the electrical system of the water heater Never touch electrical components with wet hands or when standing in water When replacing fuses always use the correct size for the ...

Page 5: ...UL in Canada as testedundertheStandardforConstructionandTest of Electric Storage Tank Water Heaters CAN CSA C22 2 No 110 M90 All water heater storage tanks conform to the latest edition of the ASME Boiler and Pressure Vessel Code SectionIv INSTALLATION PROCEDURE LOCATION OF UNIT 1 Locate the appliance so that if water connections should leak water damage will not occur When such locations cannot b...

Page 6: ... must not go below 32 F 0 C or above 104 F 40 C CAUTION Installation of the water heater should be accomplished in such a manner that if the tank piping or any connections should leak the flow of water will not cause damage to the structure For this reason it is not advisable to install the water heater in an attic or upper floor When such locations cannot be avoided a suitable drain pan must be i...

Page 7: ...n and performance NOTE When using copper tubing solder tubing to an adapter before attaching to the threaded nipple connection provided on the water heater Soldering directly to the threaded connection may harm a lining in the nipple or damage the tank lining Inlet and out let connections For ease of service install dielectric unions on the cold water inlet and hot water outlet of the water heater...

Page 8: ...ater manually discharged from the relief valve will not cause bodily injury or property damage THERMAL EXPANSION OF WATER A relief valve that discharges periodically may be due to thermal expansion in a closed system A water heater installed in a closed system such as one with a backflow preventer or check valve an installed in the cold water supply shall be provided with means to control expansio...

Page 9: ...ould be connected with a separate grounded branch circuit with over current protection and disconnect switch The water heater should be grounded in accordance with national and local codes A ground terminal is provided for ground connection only 6 Provide the appliance with proper overload protection in the branch circuit It is suggested that the electrician size the branch circuit at 125 percent ...

Page 10: ...commercial electric water heater is equipped with the following as standard equipment Low watt density immersion heating elements with an incoloy sheath Internal fusing of all elements in a maximum of 48 amp increments provides additional safety Fuse cartridges are related at 1 000 000 amps interrupting capacity A painted enamel steel outer jacket and electrical control panel are provided Channel ...

Page 11: ...ater when it is not filled with water Pilot lights Monitor on off cycle of contactors Manual limiting switches with indicating lights to permit heater kW input to be manually limited as desired Temperature and pressure gauges are available installed flush with the jacket to monitor heater performance Electronic step controller module provides electronic thermostat control Safety door interlock pre...

Page 12: ...t is also fused on both the primary and secondary sides of the control circuit transformer CONTACTORS The power to the immersion electric heating elements is switched by a definite purpose magnetic contactor The contactor is supplied with 120 VAC from the control circuit when the immersion thermostat senses a drop in stored water temperature below the desired set point A magnetic coil in the conta...

Page 13: ...he knob clockwise increases the set point The temperature setting shown at the top of the knob is the selected set point The immersion thermostat has a fixed 6 F 3 3 C differential TEMPERATURE REGULATION WARNING HAZARD OF ELECTRICAL SHOCK Before opening the electrical access panel to adjust the thermostat make sure the electrical supply to the water heater is turned OFF DANGER Full power is presen...

Page 14: ...NOFF OR DISCONNECT THE ELECTRICAL SUPPLY AT THE MAIN POWER DISCONNECT EXTERNAL TO THE APPLIANCE DANGER Water temperature over 125 F 51 7 C can cause severe burns instantly or death from scalding Children disabled and elderly are at highest risk of being scalded See instruction manual before setting temperature at heating appliance Feel water before bathing or showering If this appliance is used to...

Page 15: ...PERATURE STEP MODULE The water heater uses an optional adjustable electronic temperature control to provide staged ON OFF control of the electric heating elements Operation is based on temperature input from an immersion temperature sensor The sensor is a positive coefficient platinum thermistor The sensor is placed in a well located above the heating elements it is controlling A liquid crystal di...

Page 16: ... must be replaced before the power is turned on and the water heater is returned to service CAUTION Disconnect the main power top the heater before opening the element access panel to reset the high limit control NOTE The high limit control will not re set until the water temperature has dropped below the set point of the high limit IMMERSION HEATING ELEMENT WARNING HAZARD OF ELECTRICAL SHOCK Befo...

Page 17: ...ng element installed in the highest point in the storage tank If the internal water level drops below this point the low water cut off will shut down operation of the heating elements An electronic type low water cut off is available as a factory supplied option on all models The optional electronic low water cut off has an LED located on the main circuit board This LED will be illuminated and the...

Page 18: ...on and off with a pre set schedule The time clock may be specified with a 24 hour scheduling period or with a 7 day scheduling period By the adjustment of the set points on the time clock the water heater may be turned off when hot water is not needed or in periods when the building may not be occupied The time clock allows the water heater to automatically cycle on in advance of the time when hot...

Page 19: ...the safety function or multiple safety functions that the alarm bell will sound on when the water heater is ordered from the factory The alarm bell typically is used to indicate a low water condition or a high water temperature condition The alarm is furnished with a silencing switch to turn off the audible alarm while trouble shooting a control sensed malfunction that is indicated by an audible a...

Page 20: ...hermal expansion of heated water Consult your local plumbing contractor and plumbing wholesaler for assistance in properly selecting an expansion tank for your system As the water heater operates there may be noises generated by the expansion and contraction of the metal parts of the water heater and related piping These noises may occur during periods of heat up or cool down They do not represent...

Page 21: ...NOTES 22 ...

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