Carlin EZ-Temp User Manual

Well clamp with sensor retainer spring

Microprocessor

Temperature Controls

EZ-Temp

Instruction Manual

Installer/servicer — Except where speciﬁcally stated otherwise,

this manual must be used only by a qualiﬁed service technician. Read and follow all instructions in this manual and in the appliance manual. Failure to comply with this or other requirements in this manual could result in severe personal injury, death or substantial property damage.

This symbol calls out a hazard that could cause severe personal

injury, death or substantial property damage if the instructions given are not followed.

Wiring: Refer to EZ-Temp data sheet for wiring information.

Verify ratings: Verify the ratings of the control meet the require-

ments of the appliance as speciﬁed in the appliance instructions. Refer to the EZ-Temp control data sheet for required electrical supply and load ratings. Verify that the controls, wiring and installation comply with all applicable codes.

Electrical shock hazard: Disconnect power to appliance when

wiring or servicing any electrical component.

Scald hazard: Water hotter than 130°F can cause serious burns or

death. Follow water heating appliance manufacturer’s guidelines when installing temperature limit controls - DO NOT install a control that can be set at a higher temperature than speciﬁed. Also verify that the installation includes all water temperature regulating means needed to ensure the safety of building occupants, in compliance with all applicable codes.

Verify operation: Test the controls/appliance to verify the appliance

operates as speciﬁed in the appliance manual before leaving the installation.

Carlin Combustion Technology, Inc.

70 Maple Street East Longmeadow, MA 01028 Ph 413-525-7700 Fx 413-525-8306

Te c h s u p p o r t 800-989-2275

carlincombustion.com

EZ-Temp Microprocessor Temperature Control — Instruction manual

Sensor, J-box & wellEZ-Temp

Sensor & existing well, J-box

EZ-Temp well

EZ-Temp sensor

EPDM rubber retainer

Retainer washer

Jam nut

Sensor leads

J-box, 4 x 4

Lock washer

Existing well

Well clamp

Sensor retainer spring

3.8” rubber retainer

Flat washer

Tensioning screw

Install sensor(s)

To install a new immersion well:

1. Turn off power to the appliance and close isolation valves.

2. Follow appliance instructions to drain the appliance so water line is below the insertion tapping.

3. Remove existing well and sensor. Apply a small amount of pipe dope to the new well and secure in tapping.

4. Insert EZ-Temp sensor into well and secure sensor in place as described in the following.

5. Reﬁll appliance with water, following appliance manual procedures.

When routing sensor wires, avoid sharp edges and use strain

relief bushings at penetrations to prevent movement or electrical shorting of the sensor. Sensor wires are not low voltage, and must be routed in conduit.

Conﬁguration A: Sensor and well only

1. Insert the sensor into well (1) until the sensor (2) tip bottoms in the well socket.

2. EZ-Temp well: Slide the rubber retainer (3) over the sensor wires until it ﬁrmly contacts the sensor casing. Slide the retainer washer (4) and the jam nut (5) over the wires. Thread the jam nut into the well until snug.

3. Existing well: Press the sensor retainer plug (11) into the well until it securely holds the sensor wires, to prevent movement of the sensor.

Conﬁguration B: Sensor, EZ-Temp well and J-box

1. Insert the sensor into well (1) until the sensor (2) tip bottoms in the well socket.

2. Slide the rubber retainer (3) over the sensor wires until it ﬁrmly contacts the sensor casing. Slide the retainer washer (4) over the wires.

3. Slide the lock washer (8), J-box (7), and jam nut (4) over the wires.

4. Thread the jam nut into the well and tighten to secure the J-box and sensor in place.

Conﬁguration C: Sensor, EZ-Temp well and J-box

1. Remove the center knock-out from one side of the J-box (7).

2. Position the well clamp (10) over the end of the well (9) (sensor not yet installed) and slide the well clamp (10) toward the side of the J-box (9) engaging the keyslot opening with the well undercut.

3. Position the ﬂat washer (13) over the open knockout and install the tensioning screw (14) through the ﬂat washer (13) and into the well clamp (10), tighten.

4. Position the rubber retainer (12) over the sensor leads until the retainer stops at the sensor body.

5. Position the retainer spring (11) near the end of the rubber retainer as shown.

6. Slide sensor and retainer/sping assembly into well. Squeeze retainer spring ends together as the spring enters the well. The end of the spring should be within the well bore.

Conﬁgurations

Carlin EZ-Temp components are available in the following conﬁgurations, allowing use with existing wells in addition to EZ-Temp wells.

Surface-mount sensors are also available.

• Control kits EZ-Temp controls mount to a standard 4x4 J-box or can be panel mounted.

Control kits include the control and sensor(s) (item 2) plus hardware needed for mounting to an existing well (items 10 and 11). To obtain an EZ-Temp well and hardware, obtain an EZ-Temp well kit, below.

• Well kits

EZ-Temp wells are available in the sizes shown below. Well kits include a

well (item 1), rubber sensor retainer (item 3), retainer washer (item 4), jam nut (item 5), and J-box lock washer (item 8).

• Sensor Kits Sensor kits include only the sensor (item 2). Sensors are available in single

and dual conﬁgurations (two sensors in the same assembly). For controls that use multiple sensors, obtain separate sensor kits or a sensor kit and a dual sensor.

Mount the control

1. Insert sensor wire terminals into the labelled openings on the back of the control. Press into place ﬁrmly.

2. Attach the control to the 4x4 J-box or panel mount, as desired.

Wire the control

1. Control wiring (including sensor wires) must be routed through conduit or electrical enclosures. Follow all applicable codes and the appliance manual.

2. Follow the burner and appliance wiring diagrams to connect the control(s) into the appliance limit circuit.

3. For speciﬁc applications, contact your Carlin supplier for further information.

Set the control

1. Follow the appliance manual to set the correct limit temperature for the appliance. To adjust the EZ-Temp control:

• Insertascrewdriverintothesettingslotandrotateuntiltheindicatorpoints

to the desired temperature.

2. Test the operation of the appliance and the new limit control(s) to verify correct operation.

3. NOTE: EZ-Temp controls have a subtractive differential — control contacts trigger when the temperature setting is reached. Contacts reset after temperature drops below setpoint minus the differential amount.

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Carlin part number MNEZT5 Rev. 12/08/2008