Coastal MK II Kurzanleitung

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Coastal MK II Digital Thermostat/Thermometer

(1) Description

The Coastal MK II Digital Thermostat/Thermometer comprises of a thermostat unit

mounted in a plastic mounting plate measuring 3.5" x 2". The front panel incorporates a

three-digit red LED display with five-button control panel. The display shows degrees and

tenths of degrees, and can be set to work in either Fahrenheit or Celsius. The assembly is

pre-wired with a fused 10' cable harness and push-on connectors to facilitate easy

installation. A 10' temperature sensor probe is pre-wired, and the mounting plate is drilled for

the black screws provided.

(2) Location

The thermostat is designed to be mounted on a vertical surface, secured with the screws provided. Care must be taken to

ensure that the location chosen will not subject the panel or its components to splashing or running water, steam, corrosive gasses,

excessive vibration, or physical damage. Ideally the location will allow the 10' thermostat sensor to be installed without being

extended. If it is necessary to extend the sensor cable, the electrical joints should be soldered. The thermostat requires a cut-out of

3.25" x 1.5", and a minimum depth of 2-1/2".

(3) Temperature Sensor Probe Mounting

The temperature sensor probe is mounted in the refrigerator or freezer cabinet so that it senses the average air

temperature. It does not attach to the evaporator. It is best mounted at mid-height, on a wall or divider that does not have any

part of the evaporator mounted on it, and insulated from the wall to ensure that it senses air temperature only.

(4) Operation

The Coastal MK II will display box temperature continuously. When the box warms up to a temperature of two degrees

above the set point (default), the thermostat will start the compressor. This will be signified by the illumination of a yellow snowflake

symbol on the display. When the system has lowered the temperature to the set point, the compressor is stopped and the snowflake

symbol extinguished. NOTE: The raindrop and light bulb buttons are inoperable and have no function on this thermostat.

(5) Turning on and off.

(6) Adjusting Temperature Set Point

The Coastal MK II is supplied set as a refrigerator thermostat in degrees Fahrenheit, with 40F as the set point. If installed on a

freezer system it is suggested to set the initial set point to 12F (-12C)

To change temperature set-point:

•

Press SET button. "SET" appears in display.

•

Press SET button again. Set point value is displayed and flashes.

•

Press UP or DOWN arrows to the desired set-point. Suggested starting set-points are 40F (4C) for a refrigerator, and

12F (-12C) for a freezer.

•

Press SET button. "SET" is displayed

•

Press SET and DOWN buttons together to quit and return to temperature display, or display will revert automatically in

one minute.

NOTE: Allow sufficient time for the system to settle down between making adjustments. At least one day is recommended.

(7) Fault Code Display

•

"ooo"

Temperature Sensor Probe or its cable is open circuit or disconnected.

•

"---"

Temperature Sensor Probe or its cable is short circuit

•

"ALH"

Buzzer will also sound. High temperature alarm has been activated. See

•

"ALL"

Buzzer will also sound. Low temperature alarm has been activated. See

(8) Emergency Operation if Temperature Sensor Probe Fails

If the Temperature Sensor Probe becomes either short circuit or open circuit, the Coastal MK IIa will show an alarm on the

(7).

display, see

There is an option to run the compressor on an emergency on-off routine according to time settings entered by the

operator. This feature is disabled, but can be activated by entering the desired "on"

and "off" times in c2 and c3 of the Con menu. See

(9) Wiring

If using to control a spillover fan:

Do not connect wires to controller.

Bridge terminals 4 and 7.

Connect black or blue fan wire to 5.

Connect red fan wire to 8.

Temperature Sensor

Press and hold SET and DOWN buttons for 8 seconds. "OFF" is displayed when turned off.

(12)

Rear view of Coastal MK II

DC Power Supply

Terminal "C" on Danfoss controller or Merlin

Terminal "T" on Danfoss controller or Merlin

(10)

NOTE:

A Power Terminal Multiplier is provided

to be installed on the + and – terminals

of the Danfoss controller. This provides a

second set of terminals for the red and

black power supply wires to connect to.

Wires in 10' harness