Isotherm SP Cooling Units

Isotherm SP Refrigeration Systems - Compact Water Cooled

 

Even on the hottest days, the water-cooled Isotherm SP operates consistently at a high level of efficiency.  The SP thru-hull is a patented device which can replace your galley sink drain without making new holes in the hull. The SP fitting is approximately 2.5 inches (60 mm) in diameter.  Each SP Refrigeration System comes complete with pre-charged compressor, evaporator, thru-hull, mounting bracket, thermostat, and shut-off valve (sea cock) for the thru-hull fitting.  

The SP system works without fans or water pumps to remove the heat generated by the compressor.  The SP system consumes less battery power than a conventional seawater pump or fan cooled system and is remarkably quiet.

Each system features quick connects for easy installation with 9 feet (3 meters) of refrigerant line between the evaporator and thru-hull, six feet (2 meters) between the compressor and evaporator, and three feet (1 meter) between the compressor and thru-hull.  Prolong Extension Tubes which come in pre-charged pairs with quick-connects can be inserted in the loop at any point to extend the length between components by one, two, or three meters.

Following are PDF files covering installation, dimensional drawings, and materials composition:

Installation Instructions (PDF, 147 kB)

Dimensional Drawing with Sea Cock (PDF, 268 kB)

Dimensional Drawing (PDF, 25 kB)

SP Thru-Hull Materials (PDF, 690 kB)

 
 

My advantages

  • Fridge or freezer use
  • 12/24 V Danfoss/Secop compressor
  • Universal kit AC/DC optional for a complete power supply compatibility (12/24 V, 230/115 V and 50/60 Hz)
  • SP system (patented) to reduce the noise of a ventilated condenser and reach a very low power consumption
  • Easy installation thanks to "click-on" system
Click-on mounting brackets
 

Technical detail overview


Evaporator
Dimensions Evaporator L x W x H (inch)
Max. Box Volume Fridge (cu.ft.)
Max. Box Volume Freezer (cu.ft.)
Danfoss / Secop
Compressor type
SP 2051
Small-O
 9 x 3 x 8
4.4
1.5
BD35F
SP 2351
Medium-O
13 x 4 x 9
5.3
1.8
BD35F
SP 2551
Large-O
15 x 6 x 11
7.0
2.3
BD50F
SP 2055
Small-Flat
14 x 5
2.1
0.7
BD35F
SP 2057
Small-L
10 + 4 x 14
3.5
1.2
BD35F
SP 2050
Large-L
16 + 7 x 8
4.4
1.5
BD35F
SP 2553
Flat
32 x 8
6.0
2.0
BD50F
SP 2554
Flat
47 x 7
7.1
2.3
BD50F
SP 2555
Flat
39 x 11
9.2
3.0
BD50F
SP 2556
Large-Flat
54 x 12
14.1
4.7
BD50F

Temperatures range: from +2°C to -18°C


 

Image: SP 2051

Compact sea water cooled Unit SP 2051
Compact sea water cooled Unit SP 2051

Evaporator:  Small-O

Dimensions Evaporator H x W x D (inch):               9 x 3 x 8

Max. Box Volume Fridge (cu.ft.):  4.4

Max. Box Volume Freezer (cu.ft.):  1.5

 

 

Image: SP 2351

Compact sea water cooled Unit SP 2351
Compact sea water cooled Unit SP 2351

Evaporator:  Medium-O

Dimensions Evaporator H x W x D (inch):  13 x 4 x 9

Max. Box Volume Fridge (cu.ft.):  5.3

Max. Box Volume Freezer (cu.ft.):  1.8

 

 

Image: SP 2551

Compact sea water cooled Unit SP 2551
Compact sea water cooled Unit SP 2551

Evaporator:  Large-O

Dimensions Evaporator H x W x D (inch):  15 x 6 x 11

Max. Box Volume Fridge (cu.ft.):  7.0

Max. Box Volume Freezer (cu.ft.):  2.3

 

 

Image: SP 2055

Compact sea water cooled Unit SP 2055
Compact sea water cooled Unit SP 2055

Evaporator:  Small-Flat

Dimensions Evaporator H x W (inch):  14 x 5

Max. Box Volume Fridge (cu.ft.):  2.1

Max. Box Volume Freezer (cu.ft.):  0.7

 

 

Image: SP 2057

Compact sea water cooled Unit SP 2057
Compact sea water cooled Unit SP 2057

Evaporator:  Small-L

Dimensions Evaporator H x W x D (inch):            10 + 4 x 14

Max. Box Volume Fridge (cu.ft.):  3.5

Max. Box Volume Freezer (cu.ft.):  1.2

 

 

Image: SP 2050

Compact sea water cooled Unit SP 2050
Compact sea water cooled Unit SP 2050

Evaporator:  Large-L

Dimensions Evaporator H x W x D (inch):  16 + 7 x 8

Max. Box Volume Fridge (cu.ft.):  4.4

Max. Box Volume Freezer (cu.ft.):  1.5

 

 

Image: SP 2553

Compact sea water cooled Unit SP 2553
Compact sea water cooled Unit SP 2553

Evaporator:  Flat

Dimensions Evaporator H x W (inch):  32 x 8

Max. Box Volume Fridge (cu.ft.):  6.0

Max. Box Volume Freezer (cu.ft.):  2.0

 

 

Image: SP 2554

Compact sea water cooled Unit SP 2554
Compact sea water cooled Unit SP 2554

Evaporator:  Flat

Dimensions Evaporator H x W (inch):  47 x 7

Max. Box Volume Fridge (cu.ft.):  7.1

Max. Box Volume Freezer (cu.ft.):  2.3

 

 

Image: SP 2555

Compact sea water cooled Unit SP 2555
Compact sea water cooled Unit SP 2555

Evaporator:  Flat

Dimensions Evaporator H x W (inch):  39 x 11

Max. Box Volume Fridge (cu.ft.):  9.2

Max. Box Volume Freezer (cu.ft.):  3.0

 

 

Image: SP 2556

Compact sea water cooled Unit SP 2556
Compact sea water cooled Unit SP 2556

Evaporator:  Large-Flat

Dimensions Evaporator H x W (inch):  54 x 12

Max. Box Volume Fridge (cu.ft.):  14.1

Max. Box Volume Freezer (cu.ft.):  4.7