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ELECTRICAL HOOK-UP

WARNING

HAZARD OF ELECTRICAL SHOCK! BEFORE BEGINNING ANY  WORK ON THE
INSTALLATION, MAKE SURE THE ELECTRICAL SUPPLY TO THE HEATER IS TURNED
“OFF”. FAILURE TO DO THIS COULD RESULT IN DEATH, SERIOUS BODILY INJURY,

OR PROPERTY DAMAGE.  

WARNING

WATER HEATERS EQUIPPED FOR ONE VOLTAGE ONLY: CHECK THE RATING PLATE 
ON THE FRONT OF THE UNIT. DO NOT USE THIS WATER HEATER WITH ANY VOLTAGE
OTHER THAN THE ONE SHOWN ON THE MODEL RATING PLATE. FAILURE TO DO SO 
CAN RESULT IN DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. IF YOU
HAVE ANY QUESTIONS OR DOUBTS CONSULT YOUR ELECTRIC COMPANY.

This heater must have its own independent circuit using four wires; three live and one ground,

of the appropriate rating protected by the correctly rated three pole breaker

WARNING

FAILURE TO GROUND THE SYSTEM MAY RESULT IN DEATH OR SERIOUS INJURY

IMPORTANT  

BEFORE SWITCHING “ON” THE POWER AT THE MAIN CIRCUIT BREAKER PANEL MAKE
SURE THAT THE HOT WATER CIRCUIT IS FREE OF AIR POCKETS OR PREMATURE

FAILURE OF THE ELEMENT WILL OCCUR. TO DO THIS OPEN ALL HOT WATER OUTLETS
ONE AT A TIME FOR A MINUTE OR TWO UNTIL THE WATER FLOW IS CONTINUOUS AND
FREE FROM “GULPING” AND FROM VISIBLE AIR POCKETS.

RATINGS OF “ED” Series Twelve Electric Tankless Water Heater

Units are set for a max temperature of 90°F

THIS UNIT MUST 

NOT

BE CONNECTED IN STAR CONFIGURATION

5

Temperature Rise (F°) GPM (gallons per minute)

Model number prefix

kW Rating

Amps per 

phase

4 gpm

6 gpm

15 gpm

20 gpm

ED079

79

55

67

45

36

27

ED096

96

67

82

55

44

33

ED108

108

75

92

61

49

37

ED126

126

88

108

71

57

43

ED138

138

166

117

78

63

47

Summary of Contents for ED079480T12EDS

Page 1: ...ILITIES PLEASE TAKE THE TIME TO READ NOT ONLY THIS MANUAL BUT ALSO THE WARRANTY CARD ENCLOSED WARRANTY OF THIS HEATER WILL DEPEND ON PROPER INSTALLATION OPERATION AND REQUIRED MAINTENANCE THE WARRANTY SHALL BE VOID IF THE DESIGN ORSTRUCTURE OF THE WATER HEATER HAS BEEN ALTERED IN ANY WAY WHATSOEVER THE MANUFACTURER OF THIS WATER HEATER WILL NOT BE LIABLE FOR ANY DAMAGES BECAUSE OF FAILURE TO COMPL...

Page 2: ...6 ED096480T12EFD 480 96kW 116 ED108480T12EFD 480 108kW 130 ED126480T12EFD 480 126kW 152 ED138480T12EFD 480 138kW 166 EFD Eye Face Drench For combination Eye Face Drench Shower First stage minimum activation 4 gpm 1 2 kW rating Second stage activation 15 gpm full power MODEL NUMBERS COVERED ...

Page 3: ... debris before fitting the heater otherwise the flow switches could jam in the on position The unit must be connected to its own individual electric circuit protected by a suitably rated three pole breaker The maximum voltage which can be applied across any heating module is 480 volts WARNING Improper installation adjustment alteration service or maintenance can cause DEATH SERIOUS BODILY INJURY O...

Page 4: ...ve draw off of cold water just before the unit Also do not fit an unrestricted hot water draw off point below the heater as this will tend to empty the heater by siphoning 3 NOTE ALL MOUNTING AND PLUMBING MUST BE COMPLETE BEFORE YOU PROCEED WITH ELECTRICAL HOOK UP TEST THE INSTALLATION FOR LEAKS BEFORE CONNECTING THE ELECTRICAL SUPPLY Hazardous Locations Nonincendive Type Installation 1 The unit i...

Page 5: ... 3 Install isolating valves full flow ball valve type on both inlet and outlet pipes This allows unit to be isolated for maintenance purposes see Fig 1 4 When all plumbing is complete fully check the system for water leaks at all plumbing connections If leak is present take corrective action Fully open both inlet and outlet ball valves Run all hot water outlets fed by this heater one at a time for...

Page 6: ... appropriate rating protected by the correctly rated three pole breaker WARNING FAILURE TO GROUND THE SYSTEM MAY RESULT IN DEATH OR SERIOUS INJURY IMPORTANT BEFORE SWITCHING ON THE POWER AT THE MAIN CIRCUIT BREAKER PANEL MAKE SURE THAT THE HOT WATER CIRCUIT IS FREE OF AIR POCKETS OR PREMATURE FAILURE OF THE ELEMENT WILL OCCUR TO DO THIS OPEN ALL HOT WATER OUTLETS ONE AT A TIME FOR A MINUTE OR TWO ...

Page 7: ...h inlet and outlet BALL VALVES fully open turn on a hot water outlet 2 Run for 3 minute 3 Switch on electric supply at circuit breaker panel 4 The power indicator lights should now come on NOTE At this point water temperature may not be hot 5 Using the OUTLET BALL VALVE slowly reduce water flow until desired temperature is achieved at hot water outlet NOTE The water temperature is regulated by the...

Page 8: ...ont cover of this manual for the correct value If the resistance is much greater than the correct value call your supplier for a replacement element SYMPTOM NO HEAT OR LOW TEMPERATURE WITH INDICATOR LIGHT ON 1 WATER FLOW TOO HIGH Reduce the water flow by using an outlet ball valve See page 5 for temperature rise at various flow rates 2 INCORRECT POWER SUPPLY Make sure that the unit is connected to...

Page 9: ...1 Turn off main circuit breaker Q2 Remove front cover from heater Q3 Inspection of heater bodies and distribution manifold for water leaks Q4 Inspection of fuses 50 amp each Q5 Inspection of 12 heater elements see page 10 for element ohms Q5 Inspection of coarse inlet filter screen is clear from any debris Q6 Turn on main circuit breaker note unit has live electrical Q7 Carefully perform steps M1 ...

Page 10: ...80 VOLTS ON ANY ORDERS FOR ED079 PART EX3491 34 91 Ohms FOR ED096 PART EX2880 28 8 Ohms FOR ED108 PART EX2560 25 6 Ohms FOR ED126 PART EX2194 21 94 Ohms 10 THERMOSTATIC PCB PART EX100CV 480V SLAVE PART EX100S 480V TRIAC PART EX18 Contactor part EX08002 01 480 volts ...

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