The section of foam insulation that is free to slide on the tubing should be positioned
starting at the
point where the tubing exits the icebox and leads back to the compressor.
It is neither necessary
nor desirable to add more insulation to the tubing, as any sweating or ice formation seen on the
exposed section of tubing indicates an overcharged condition which will require remedial action.
Once the evaporator is installed, the exit hole in the box must be sealed with expanding foam,
refrigeration putty, or other suitable material that will inhibit air flow. Make sure that any drains are
plugged and that there are no other holes or gaps through which cold air can escape, and through
which warm, moist air can enter.
If the tubing is too short to reach the compressor/condensing unit, pre-charged extensions are available
in 3 ft, 6 ft, and 10 ft lengths.
6:4
Mechanical thermostat sensing tube attachment
Check to see how you need to attach the Mechanical Thermostat sensing tube before mounting the
evaporator. The last 3" or so of the Mechanical Thermostat’s sensing tube must be bent into a "U"
shape and then secured under the black plastic plate on the evaporator so that it lays in the special
grooves of the plastic plate. Finish by tightening the clamping screw.
If using the Coastal MK3 digital thermostat, the sensor mounts on the icebox wall,
not on the
evaporator
. Full instructions are included with the Coastal MK3 thermostat.
6:5
Mounting evaporators
See also 6:1 Location
H- and B-type evaporator plates can be mounted in any position.
To mount the H-type horizontally, drill four mounting holes in the roof of the icebox. Start two screws
in the rear holes. Slide the mounting slots of the evaporator over the screws, then insert and tighten the
two front screws. Finish by tightening the two rear screws.
The B-type can be mounted by using the row of holes along the top rear face of the evaporator. There
are Lid Kits available for the 340B and 250B evaporators to facilitate horizontal mounting.
The F-type has numerous mounting holes along the top and bottom edges, but only some need be used.
Do not attempt to cut, trim, or drill holes in any evaporator for any purpose.
Holes may be drilled
in the base that has been added to B-type evaporators, as this is a separate piece of aluminum.
Always use the ¾” mounting spacers supplied to protect the tubing and to provide adequate air
circulation. Additional spacers may be fashioned from hose or similar material, if required.
