Chapter 8
Spillover Kit Installation Instructions
8:1
Mounting
The Frigoboat Spillover Kit (with integral mechanical thermostat) should be installed on the barrier
dividing the freezer and refrigerator sections, on the refrigerator side, and no lower than at mid-height.
Screws may be used after drilling holes in the plastic flange.
A 2.25” diameter hole needs to be cut through the barrier to allow air to flow to the fan; a piece of
PVC pipe can be used to line the hole if desired. This will also make a neat finish while sealing the
hole from the ingress of moisture. The hole may be directly behind the evaporator in the freezer
section, and this will not be detrimental to performance. If a stand-alone Spillover Fan is used (this
requires a Coastal MKII thermostat), the Spillover Fan may be surface-mounted or installed within the
thickness of the barrier.
A return air path must be established at the top of the barrier to allow air back into the freezer. This can
either be in the form of a gap at the top of the barrier (1” should be sufficient) or 3 or more holes of the
same size as the one behind the spillover fan. All other holes, gaps, etc, in the barrier must be
completely sealed, including drains.
8:2
Electrical Connections
The Spillover Kit (with integral mechanical thermostat) must be powered by an
independent
12v
supply. This may be from a breaker on the electrical panel or via an in-line 2-amp fuse from the same
supply that is feeding the refrigeration system. Do not power the Spillover Kit from the fan terminals
on the controller. If using the stand-alone Spillover Fan (this requires a Coastal MK II digital
thermostat), refer to wiring diagrams included with these products.
8:3
Operation
The temperature dial of the Spillover Kit must be set to the desired temperature in the refrigerator
compartment. This may take some trial and error before the ideal temperature is achieved. A period of
at least one day is suggested between changes in settings. The temperature dial is in degrees Celsius
and the setting is read against an indent in the plastic housing at the six o-clock position, above the
Frigoboat sticker. A setting of +5 is suggested initially and then adjusted accordingly as desired.
