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03-15-2021, 08:16 AM #11
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Absorption refrigerators have traditionally been used in RVs, and they use a heat source to boil ammonia. There is no compressor in these units. Generally RV units are two-way (LP or 120VAC), or three-way (LP, 120VAC or 12VDC). Both versions require 12VDC to power the control system and sometimes fans even when they are operating with other heat sources. There are even versions that burn diesel or kerosene, but I’ve never seen them in an RV. The three-way units are not nearly as common as they used to be, primarily because the 12V mode didn’t do much cooling.
So the 12V control circuit draws a steady 2A, and then the heater power used varies by the environmental conditions.
There are also 12V compressor refrigerators on the market now which reduce power consumption some.
Most RVers operate on LP while AC power isn’t available.John & Kathy
2014 F250 Lariat FX4 6.2L SBCC
2014 Reflection 303RLS
SW Indiana
Momentum/Solitude TSB 24-001 for...
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