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INSTALLATION INSTRUCTIONS 

AND OWNER’S MANUAL

ELECTRIC INSTANTANEOUS WATER HEATERS 

WITH 

PhD Technology

208 and 480 VAC three phase 32 

– 144 kW

600 VAC three phase 130 / 150 kW

BEFORE ATTEMPTING ANY INSTALLATION OR SERVICE OF THIS 
HEATER, MAKE SURE THE ELECTRICAL POWER IS DISCONNECTED.  
FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN 
SERIOUS INJURY, DEATH AND/OR PROPERTY DAMAGE. 

Read and understand these instructions thoroughly before attempting the installation or service of this water 
heater.  This heater must be used to heat water only and be in a location where it is not subject to freezing 
temperatures unless supplied with factory installed freeze protection.   If a water softener is used, the 
softener must be well-maintained and in good working order.  Any maintenance issues with a water softener 
could be detrimental to the operation or longevity of your Eemax tankless water heater.   The manufacturer 
is not liable for any damages resulting from improper installation or misuse. The warranty of this water 
heater will depend upon the proper installation according to these instructions.  Refer to the warranty card 
packaged with this heater.

This installation must conform to the latest requirements of the National Electrical Code and all applicable 
state and local codes.  This information is available through your local authorities.  You must understand and 
comply with these requirements before beginning this installation.  Eemax recommends your heater be 
installed by a licensed plumber and electrician.

This unit is not required by UL 499 to have a Temperature and Pressure relief valve (T&P).  You should check 
with local codes to find out if one is required in your area.  If it is, it must be installed in the outlet hot water 
pipe between the heater and the isolation valve. 

This heater features a user friendly digital interface for ease of operation.  Information is displayed through 
a 16 character alpha numeric LCD and is controlled by 4 simple push buttons.  The unit features silent 
operation and internal diagnostics.  The desired temperature can easily be set or altered as necessary.  Once 
the desired temperature is achieved, the control can be locked to avoid tampering. User instructions for the 
unit controls start on page 9.

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Summary of Contents for AP032208

Page 1: ...r will depend upon the proper installation according to these instructions Refer to the warranty card packaged with this heater This installation must conform to the latest requirements of the National Electrical Code and all applicable state and local codes This information is available through your local authorities You must understand and comply with these requirements before beginning this ins...

Page 2: ...2 This page intentionally left blank ...

Page 3: ...NTING THE HEATER TO THE WALL PAGE 4 2 PLUMBING HOOK UP PAGE 5 3 ELECTRICAL HOOK UP PAGE 7 4 COMMISSIONING THE HEATER PAGE 8 5 CONTROL FEATURES PAGE 9 6 REPAIR PARTS 7 OPTIONS PAGE 12 PAGE 14 Use Water Hammer Arrestors in applications with excess pipe lengths or fast acting valves neglecting to do so will damage the heater and void the warranty Use appropriate water conditioning to prevent water ha...

Page 4: ...dvantage Install the heater with cabinet using the supplied mounting feet following the instructions provided with the cabinet Be sure to use appropriately rated fasteners to hold the cabinet heater in place SpecAdvantage Remove the cover by removing the cover screws as indicated by the arrows right and fasten the heater to the wall using the mounting holes located at each corner of the back plate...

Page 5: ...5 2 PLUMBING HOOK UP ...

Page 6: ...NG HOOK UP continued The heater is equipped with NPT brass fittings Make sure ONLY NPT fittings are used for connection to this heater Make the cold water inlet connection to the lower RIGHT fitting and the hot water outlet connection to the lower LEFT fitting Reversed connections will cause erratic operation and premature heater failure COLD WATER IN HOT WATER OUT COLD WATER IN HOT WATER OUT PRV ...

Page 7: ... on next page Before starting any electrical work VERIFY there is no power at the heater before proceeding The power conductors are to be secured to the L1 L2 and L3 connectors on the terminal block Fig 1 or contactor Fig 2 The ground is to be secured to the GND connector to the right of the terminal block or below contactor Fig 3 Replace the cover SpecAdvantage only FAILURE TO GROUND THE SYSTEM M...

Page 8: ...that are used to control the function of the heater Press the UP or DOWN buttons to establish your desired temperature Refer to the CONTROL FEATURES section of this manual for additional information The heater is fully installed and ready for use ELECTRICAL SPECIFICATIONS VOLTS AMPS RECOMMENDED MODEL 3 PHASE DELTA Kw PER PHASE WIRE SIZE CU 90 C AP032208 208 32 89 1 AWG AP036208 208 36 100 1 AWG AP...

Page 9: ...ROPERLY COMPLETED ELECTRICAL POWER IS ON AND WATER IS PRESENT IN THE HEATER PUSH BUTTON FLOW CHART 1 The SETPOINT TEMP or ACTUAL TEMP screen can be selected for display as the home screen Either of these screens will remain on the display when the backlight timer expires 2 There is a 5 minute time delay built into the control Regardless of which screen is being displayed after 5 minutes of inactiv...

Page 10: ...te METRIC units are degrees Celsius and liters per second Use the UP and Down buttons to select the desired units of measure 10 From the UNITS screen one press of the RIGHT button will shift the display to the SOFTWARE REVISION screen This shows the revision level of the software in the control 11 From the SOFTWARE REVISION screen one press of the RIGHT button will shift the display to the ERRORS ...

Page 11: ...e and vice versa Keep the INLET BALL VALVE fully OPEN NEVER RESTRICT THE WATER FLOW USING THE INLET VALVE E1 Inlet temperature too hot to generate heat FAULT CODES F0 Outlet thermistor out of range F1 No change in water temperature detected F2 Dry fire detected Optical Sensor Tripped F3 Excessive dry fire occurrences detected F4 Inlet thermistor out of range 13 The security of the heater settings ...

Page 12: ...unting screws Transformer Control Board Fuse Flow Meter Kit Hall Effect Board behind Flow Meter Triac SSR not shown Heating Element Assembly Optical Sensor Board Emergency Cut Off Contactor 12 13 The display can be turned off or on Press and hold the DOWN and RIGHT buttons for 3 seconds If the display is off it can be turned on by pressing and holding the same DOWN and RIGHT buttons for 3 seconds ...

Page 13: ... Optical Element Sensor Emergency Model Triac SSR Assembly Board Cut Off Contactor AP032208 EX78002 00 EX77000 8 12 EX78001 00 EX278A KIT EX08306 02 AP036208 EX78002 00 EX77000 7 20 EX78001 00 EX278A KIT EX08306 00 AP041208 EX78002 00 EX77000 6 33 EX78001 00 EX278A KIT EX08306 00 AP054208 EX78002 00 EX77000 4 81 EX78001 00 EX278A KIT EX08309 00 AP064208 EX78002 00 EX77000 4 06 EX78001 00 EX278A KI...

Page 14: ...Optional Class 1 Division 2 14 7 OPTIONS ...

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Page 19: ...N TO EXPOSED INLET AND OUTLET PIPES WILL VOID THE WARRANTY 2 Set the thermostat on the enclosure heater located at the upper left corner in the enclosure to 40 70 degrees F Note Heater Fan continuously operates to recirculate air in the enclosure The heater coil will activate based on thermostat set point 19 Note Power must be applied to the water heater for the freeze protection system to operate...

Page 20: ...ments The GFCI module is pre set from the factory to trip at 3 0A Test and reset functions are carried out automatically every 24hrs To manual test the GFCI press the test button for a min of 1 5 secs To reset a tripped GFCI cycle the power of the unit If equipped with a disconnect handle turn the handle to the OFF position then back to ON A B Test 20 ...

Page 21: ... Max motor FLA current Three phase 208 V 50 150 240 V 60 154 480 V 125 156 600 V 150 144 DC 125 V 2 pole in series 15 112 DC 250 V 3 pole in series 40 140 Short circuit rating with fuses 200 Branch circuit fuse type J Max fuse rating A 200 Nema Type 4 4X IEC TYPE IP65 Color Red Yellow DISCONNECT HANDLE ...

Page 22: ...Max motor FLA current Three phase 208 V 50 150 25 78 5 240 V 60 154 30 80 480 V 125 156 60 77 600 V 150 144 75 77 DC 125 V 2 pole in series 15 112 7 5 58 DC 250 V 3 pole in series 40 140 20 38 Short circuit rating with fuses 200 200 Branch circuit fuse type J J Max fuse rating A 200 100 Nema Type 4 4X IEC TYPE IP65 Color Red Yellow DISCONNECT HANDLE ...

Page 23: ...nclosure as shown in Figure 3 using the 3 8 16x 75 hex head screws Item2 washers Items 3 and 4 and nuts Item 5 provided Firmly tighten all fasteners 4 Position the enclosure and attached floor stands over the anchored floor studs extending the studs through the base holes in the floor stands 5 Secure the floor stands to the anchored floor studs with 3 8 inch nuts Item 5 and lockwashers Items 3 and...

Page 24: ...sure you can identify this water heater by having the model no ____________________ and serial number _____________ Call 203 267 7890 or toll free 800 543 6163 Email info eemaxinc com Web www Eemax com Eemax Inc 400 Captain Neville Drive Waterbury CT 06705 EX07200 15 Rev 5 1 ...

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