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Installation 

 

14 

 

 

 

 

 

 

 

 

 

 

 

Output heating capacity is reduced if these heaters are installed on 415V, 400V, or 380V 3-ph.
Contact a Laars representative to supply this information.
Satisfactory performance of the heater is dependent upon a specific flow rate vs temperature rise capability.

 

If the

desired temperature is not achieved, please verify the following:

1.

 

Circuit breaker is on and rated for the maximum power draw.

2.

 

Heater is drawing the proper current for the supply voltage on all three phases.

3.

 

All element load indicator lights are lit (not flashing) indicating maximum power draw and maximum amperage
is being drawn.

4.

 

Flow rate and temperature rise in the water heating process are compatible with the heater specifications.

5.

 

Verify there is no additional supply of cold water entering the line downstream of the heater.

Product Options

AL High-Low Temperature Alarm:

 

Alerts user to an over or under temperature situation.

FDS Fused Disconnect:

 

Internal fused disconnect interlocks with enclosure door when energized, prohibiting access

to a live cabinet

.

 

Select the FDS option for an additional level of safety and convenience at the heater location

.

LS (Level Sensor):

 

Prevents accidental dry fire.

T170, T180 & T190 High Temperature Option:

 

High temperatures as indicated (maximum of 170°F/76.7°C,

180°F/82.2°C, 190°F/87.8°C).

D1 Control Interface:

 

Provides 4–20ma communication interface with temperature controller.

DC Control Interface

: Is an RS-485 Modbus RTU and allows Building Management Systems to view heater outlet.

TE2 Corrosive Fluid Protection:

 

The TE2 option is a single layer of Xylan Fluoropolymeric coated heat exchanger with

 

bright annealed stainless steel elements, FDA Approved for Food Contact (use in deionized water applications).

N4X (NEMA 4X Enclosure):

 

The optional NEMA 4X corrosion resistant enclosure is designed for harsher environments

 

and made from 16 gauge 304 stainless steel.

N4 (NEMA 4 Enclosure):

 

The optional 18 gauge, NEMA 4 enclosure with ANSI61 gray, corrosion resistant paint.

           NEMA 4 is standard on model LCTEH025. 

 

 

Summary of Contents for H Series

Page 1: ...TEH006 LCTEH010 LCTEHV010 LCTEH015 LCTEHV015 LCTEH018 LCTEHV018 LCTEH025 Voltage options 208V Single Three Phase 240V Single Three Phase 277V Single Phase 380V Three Phase 400V Three Phase 415V Three...

Page 2: ...allation 6 7 Electric Installation 8 Start Up Check List 9 Start Up 10 Digital Controller Operation 11 NEMA 4 4X Digital Controller Operation 12 Perform Operational Test No 1 13 Perform Operational Te...

Page 3: ...nnect power supply before performing any work in the enclosure Failure to ground this system may result in death or serious injury Make sure that all water supply lines have been flushed and then comp...

Page 4: ...0 F 60 C For applications utilizing quick close valves or solenoid valves it is important to install a hammer arrestor or surge tank close to the point of use to absorb pressure spikes Installation Co...

Page 5: ...and other plumbing for service maintenance Set heater in a vertical upright position with the water outlet located at top Depending on the application the unit may also be installed rotated clockwise...

Page 6: ...any drop to eliminate trapped air Install one union on the water inlet side of the heater and another union upstream of the 100 Mesh 150 micron y strainer Install one union on the water outlet side of...

Page 7: ...Installation 7 2 Plumbing Installation cont...

Page 8: ...Table 310 15 for 75 C insulated copper wire 30 C Ambient Aluminum wire requires larger gauges Not all available optional voltages are listed in the table For standard enclosures remove the four screws...

Page 9: ...nstalled after pressure and temperature relief valve on outlet if required by local or national plumbing codes If the hot water process is not at the highest point in the plumbing loop then an automat...

Page 10: ...ge elements and cause heater malfunction Turn on the connected process observe output temperature rise to setpoint On standard controller set point and output temperatures are located side by side On...

Page 11: ...the controller Keys and Displays Function Setpoint Up and Down Buttons In the Home Page adjusts the set point in the right display In other pages changes the upper display to a highter or lower value...

Page 12: ...e of the controller Keys and Displays Function Setpoint Up and Down Buttons In the Home Page adjusts the set point in the right display In other pages changes the upper display to a highter or lower v...

Page 13: ...he inlet water temperature is equal to or greater than the temperature set on the digital controller 9 Perform Operational Test No 2 Each model has precise specifications for temperature rise capabili...

Page 14: ...tuation FDS Fused Disconnect Internal fused disconnect interlocks with enclosure door when energized prohibiting access to a live cabinet Select the FDS option for an additional level of safety and co...

Page 15: ...ere hard water sediment is present in the water To clean the Y Strainer 1 Turn the power off at the circuit breaker panel 2 Shut off the installer supplied cold water isolation valve to the heater 3 R...

Page 16: ...mperature or faulty sensor Turn power off Check for loose or disconnected wires Check the incoming service connection Voltage must match name plate rated voltage Labels are located on the upper left o...

Page 17: ...urce A load voltage reading is also helpful Turn power OFF before recording any Ohm readings If the above steps do not solve the problem some additional checks may be performed Follow the schematic to...

Page 18: ...DC Option Pin Out D1 Option Pin Out Pin Name Description Pin Name Description T R 2 RS 485 Transmit Receive Non Inverting Input Output Negative 3 Return Current Path for Current Pin 4 3 Signal Ground...

Page 19: ...UINT RWES Remote Set Point Control Mode Process Value 1999 000 to 9999 000 F 1128 000 to 5537 000 C 402 402 Float R Process Value Control Mode OFF 62 Auto 10 Manual 54 1880 2360 Auto UINT RWES Contro...

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