Coastal Climate Control Guardian Manual

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Guardian

Description:

The Coastal

Thermostat/ Thermometer, a compressor speed adjustment knob, and a diagnostic fault LED. The panel is supplied with

a 10' thermostat sensor and a 10' control cable that connects to a Danfoss compressor controller. If a Merlin SSC is

installed on the compressor controller, "AUTO" setting will give automatic speed control, otherwise there will be no

automatic speed control capability. A Power Terminal Multiplier circuit board is included to facilitate easy power

connections to the Danfoss controller, and a 2 amp in‐line fuse is installed in the positive power feed wire. Standard

model is for operation on 12v power supplies only. 24v versions available on request.

Location:

The panel is designed to be mounted on a vertical surface, secured by the four 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 and control cable to be installed without being extended. If it is necessary to extend either cable, the electrical

joints should be soldered. The panel requires a cut‐out measuring 4.5" x 1.5", and a depth of 3".

Installation:

The Power Terminal Multiplier is to be installed on the top two terminals of the Danfoss controller. This

provides two sets of + and – terminals: one set for the incoming 12v power feed from the distribution panel via a

breaker, and one for the power supply to the

Multiplier mate correctly with the male pins. The

sensor and control cables run to their respective locations. The control wires connect to the Danfoss controller as shown

below. The thermostat sensor should ideally be located at mid‐height in the box, and not on a wall that has any portion

of an evaporator mounted on it. The sensor should be isolated from the box wall with a plastic tie or similar.

Wiring:

Power Terminal Multiplier

Cable to Guardian panel

Brown

Note 2

White

System Monitor and Speed Control

Guardian

comprises a panel measuring 5"w x 2"h that incorporates a Coastal MK II Digital

Guardian

Black

Fuse

Red

Green

Blue

Note 1

Orange

Danfoss Standard 101N0210 Compressor Controller

. Ensure that the female connectors on the Power Terminal

panel is then mounted and secured and the thermostat

NOTES:

1 – If Merlin SSC fitted, Blue and Orange

wires plug on to "C" and "T" on Merlin.

2 – Brown and White wires are spare and not

used on standard installations. These may be

used as switched wires from a second digital

thermostat for a spillover fan, etc.

12v or 24v Power

Supply input

12v switched output for

Fan or Pump Relay

Over: