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GENERAL SAFETY

The “Eemax Series Two” heater is specifically designed to take in cold water and heat it to 
temperatures suitable for normal domestic usage up to a maximum of 140° F (60° C). To 
obtain optimum performance and energy savings, the unit should be located as near as 
possible to the point of use. 

The unit is supplied with 3/4” NPT pipe connections.  Under no circumstances use a blow 
torch on pipe which is connected to the heater (serious damage to the electronic flow 
switch will result). Carefully use Teflon tape, ensuring no debris enter the heater.  

Do not

use pipe dope.

Also, ensure that the pipes are clear of installation debris before fitting the heater.

THIS HEATER MUST HAVE

ONE DEDICATED INDEPENDENT 

CIRCUIT, USING CORRECTLY RATED WIRES AND CIRCUIT 

BREAKER. 

WARNING

IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE
CAN CAUSE

DEATH, SERIOUS BODILY INJURY OR PROPERTY DAMAGE

. REFER TO 

THIS MANUAL FOR ASSISTANCE OR CONSULT THE LOCAL ELECTRIC UTILITY FOR 
FURTHER INFORMATION.

FAILURE TO 

GROUND

THE SYSTEM MAY RESULT IN DEATH OR SERIOUS INJURY.

WARNING

WARNING

WATER HEATERS EQUIPPED FOR ONE VOLTAGE ONLY:  

THIS WATER HEATER IS

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

WARNING

HAZARD OF ELECTRICAL SHOCK! BEFORE REMOVING THE COVER OR SERVICING THE 
WATER HEATER, MAKE SURE THE ELECTRICAL SUPPLY TO THE WATER HEATER IS 
TURNED “OFF”. FAILURE TO DO THIS COULD RESULT IN

DEATH, SERIOUS BODILY INJURY,

OR PROPERTY DAMAGE

.

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Summary of Contents for EX120 T

Page 1: ...IT COULD CAUSE DEATH SERIOUS BODILY INJURY AND OR PROPERTY DAMAGE READ ALSO THE ENCLOSED WARRANTY CARD WARRANTY OF THIS WATER HEATER WILL DEPEND ON PROPER INSTALLATION AND OPERATION THE WARRANTY SHALL BE VOID IF THE DESIGN HAS BEEN ALTERED IN ANY WAY WHATSOEVER THE MANUFACTURER OF THIS HEATER WILL NOT BE LIABLE FOR ANY DAMAGES BECAUSE OF FAILURE TO COMPLY WITH THE INSTALLATION AND OPERATING INSTRU...

Page 2: ...JUSTMENT ALTERATION SERVICE OR MAINTENANCE CAN CAUSE DEATH SERIOUS BODILY INJURY OR PROPERTY DAMAGE REFER TO THIS MANUAL FOR ASSISTANCE OR CONSULT THE LOCAL ELECTRIC UTILITY FOR FURTHER INFORMATION FAILURE TO GROUND THE SYSTEM MAY RESULT IN DEATH OR SERIOUS INJURY WARNING WARNING WATER HEATERS EQUIPPED FOR ONE VOLTAGE ONLY THIS WATER HEATER IS EQUIPPED FOR ONE VOLTAGE TYPE ONLY CHECK THE RATING PL...

Page 3: ...8 CLEARANCE ABOVE UNIT 3 Figure 1 MOUNTING HOLES To independent circuit breaker serial LUG TERMINALS AT RELAYS ELECTRICAL HOOK UP 240V 208V L1 L2 L1 L2 GROUND LUG Factory installed jumpers from L1 L1 and L2 L2 ...

Page 4: ...hand side Under NO circumstances can these be reversed 4 Leave a minimum of 8 above the unit for easy replacement of the element 5 The heater should be fixed to the wall using screws in the four mounting holes at each corner of the backplate NOTE The heater should be installed below the level of all hot water outlets serviced by this heater NOTE PRESSURE AND TEMPERATURE RELIEF VALVE These units ar...

Page 5: ...ull flow ball valve type on both inlet and outlet pipes This allows unit to be isolated for maintenance purposes Fig 1 4 When all plumbing is complete fully check the system for water leaks at all the plumbing connections If a leak is present take corrective action If the leak is at a compression fitting slowly tighten the compression nut until it stops Fully open both inlet and outlet BALL VALVES...

Page 6: ...hrough the hole provided in the flange on the backplate The live wires should be connected to the slots in the terminal block marked L1 and L2 The ground lead must be connected to the slot marked GND GROUND MUST BE BROUGHT TO THE GROUND AT THE CIRCUIT BREAKER PANEL DANGER FAILURE TO GROUND THE SYSTEM MAY RESULT IN DEATH OR SERIOUS INJURY Units rated for 240 V can operate at 220 V or 208V with redu...

Page 7: ...e first unit is the right hand heating module and the second unit is the left hand heating module IV COMMISSIONING YOUR HEATER T MODELS a Switch on the power to the first unit The power indicator light should illuminate b Switch on the power to the second unit again the power indicator light should illuminate Note This light should pulse On and Off at first and after about 20 30 seconds it should ...

Page 8: ...e adjustment screws by about the same amount so that the lights pulse at the same rate If you have reduced the temperature considerably from the 140 F setting you could now open up the outlet ball valve slightly to achieve a higher rate of flow When the indicator light is on continuously the unit is emitting full power When it is pulsing the unit is modulating the power to achieve the temperature ...

Page 9: ...than this value call Eemax for a replacement element 5 ECO TRIPPED High Limit Thermostat TURN OFF THE MAIN CIRCUIT BREAKER Reset by pushing in red button on each heater module SYMPTOM B 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 8 for temperature rise at various flow rates 2 INCORRECT POWER SUPPLY Make sure ...

Page 10: ...75KW 240V EEMAX REPLACEMENT PARTS DIAGRAM 7 Wire EX 100G 8 Wire EX 284 EemaX inc 353 Christian St Oxford CT 06478 Tel 203 267 7890 To appropriate circuit breaker 10 Triac EX 18 EEMAX REPLACEMENT PARTS DIAGRAM CONTROL BOARDS serial ECO High Limit Thermostat Push to Reset L1 L2 Temperature Adjustment Knob L1 L2 To 2nd module ...

Page 11: ...EL L1 BLK ELEMENT RING TRIAC GATE BLK POWER BLK L1 FROM RELAY LINE SIDE T C BLU T C BLU RELAY ORG TO ECO EL L2 N RED or WHT ELEMENT RING T C BLU 2 PIN CONNECTOR RELAY ORG TO RELAY COIL L1 POWER BLK FROM RELAY LINE SIDE L2 N POWER RED WHT FROM RELAY LINE SIDE CIRCUIT BOARD DIAGRAM 11 ...

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