Dometic RM2554 Refrigerator Instruction Manual
Dometic RM2554 Refrigerator
Dometic RM2554 Refrigerator
Dometic RM2554 Refrigerator Instructions
Here we offer the Dometic RM2554 Refrigerator manual completely free and in English. We have cataloged this manual in the Refrigerator section on Manualverse, and it has been rated by 1 users with an average rating of 5. If you have any specific questions about Dometic RM2554 Refrigerator, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.
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Dometic RM2554 Refrigerator Specifications
| Feature | Specification |
|---|---|
| Model | Dometic RM2554 |
| Refrigerator type | Absorption refrigerator, 3-way (120 V AC, 12 V DC, LP gas) |
| Intended use | Recreational vehicles and mobile housing |
| Total refrigerated volume | 5 cu.ft |
| Overall height (A) | 43-1/2 in (1104 mm) |
| Overall width (B) | 24-7/8 in (632 mm) |
| Overall depth (C) | 24-11/16 in (627 mm) |
| Recess height (H) | 42-5/8 in (1083 mm) |
| Recess width (W) | 23-11/16 in (602 mm) |
| Recess depth (D) | 24 in (610 mm) |
| Minimum ventilation height (roof vent and lower side vent) | 44-1/2 in (1130 mm) |
| Minimum clearances to combustible materials | Top 0 in, Side 0 in, Bottom 0 in, Rear 0 in |
| Certified vent system kit | Kit No. 3A: Roof Base 3103633.XXX or 3310893.XXX, Roof Cover 3103634.XXX or 3310894.XXX, Lower Side Vent 3109350.XXX |
| Minimum vent opening dimension | 1/4 in |
| Certification | ANSI Z21.19 / CSA 1.4 (Refrigerators using gas fuel) |
| Gas connection | 3/8 in SAE (UNF 5/8 in-18) male flare at the manual gas valve |
| LP gas operating pressure | 11 in water column (supply pressure must not exceed 11 in WC) |
| AC power connection | 120 V AC, grounded three-prong plug |
| Power cord free length | 2 ft |
| Recommended AC receptacle position | To the left of the refrigerator, 6 in above the mounting floor |
| 12 V DC requirement | Continuous 12 V DC supply required to maintain the automatic energy system |
| Minimum control voltage | Controls operate down to 9.6 V DC |
| 12 V DC wire size | 8 AWG |
| Maximum total conductor wire length | 27 ft (8 m) |
| 120 V AC heater | 175 W, 120 V (part no. 3850644-45/5) |
| 12 V DC heater | 175 W, 12 V (part no. 3850646-10/4) |
| Control system fuse | 3 A |
| AC heater fuse | 5 A |
| 12 V DC heater fuse | 30 A in-line blade fuse |
| Number of fuses | 3 (two in the power module, one in-line blade fuse) |
| Burner jet | Jet No. 43 (part no. 2007419-16/7) |
| Electrode gap | 1/8 in to 3/16 in (3–5 mm) |
| Gas ignition attempts | Approx. 45 seconds per attempt at two-minute intervals, three attempts in AUTO mode |
| Refrigerant system | Ammonia, hydrogen, water; sodium chromate corrosion protection (less than 2 weight % of coolant) |
| Initial cool-down time | Up to 4 hours on first start |
| Control panel buttons | ON/OFF, DC mode selector, AUTO/GAS mode selector, Temperature selector |
| Indicator lamps | DC, AC, GAS, AUTO, CHECK, Temperature indicator lamps (COLD 1–5 COLDEST) |
| Door insert panel size (single door) | Height 981–983 mm (38-5/8 to 38-11/16 in), Width 524–527 mm (20-5/8 to 20-3/4 in) |
| Door panel maximum thickness | 5/32 in (4 mm) |
| Mounting screws | 5 (two through the front base, two in the top frame, one in the rear base), not included |
| Thermocouple reading (maintenance) | 25–35 millivolts |
| Thermistor reading (maintenance) | 7,000–10,000 ohms at 32°F |
| Warranty | Limited three-year: 3 years parts and freight, 2 years labor |
Dometic RM2554 Refrigerator Details
The Dometic RM2554 is a 3-way absorption refrigerator made for RVs. It has no compressor. Ammonia condenses in the finned coil at the top rear of the unit, then flows into the evaporator inside the freezer, where circulating hydrogen gas makes it evaporate and produce cold. The evaporator tubing slopes so the liquid ammonia keeps moving down by gravity. Because of this, the vehicle has to be level whenever it is parked for several hours. While the RV is moving, the normal rocking keeps ammonia from collecting in the tubing.
The automatic energy selector system picks the best power source available. In AUTO mode, 120 V AC has priority over LP gas. If AC power is lost, the control switches to gas, and it switches back to AC as soon as AC returns. You can also run the unit on gas only, or select DC mode manually. DC mode overrides every other mode. Use it only while the house battery is being charged, because running on 12 V DC drains the battery quickly.
The control system also has a limp mode for component failures. If the display module stops working, the control runs fully automatically with AC, DC and gas priority and holds the temperature at the mid setting. If the temperature sensor fails, the cooling unit runs continuously on the selected energy source until a new sensor is installed and the system is reset. One thermostat controls both gas and electric operation, so you do not have to reset it when the energy source changes.
Installation needs a solid, level floor and a substantial enclosure. Do not install the refrigerator directly on carpeting. A wood strip must run across the upper opening of the enclosure so the top frame can be screwed to it. A sealing strip on the front frame keeps the combustion system isolated from the living space. Block any gap of more than 1-1/2 inches above the refrigerator, because trapped heat makes the top hot and lowers efficiency. Run the drain water hose through the floor so it does not touch the boiler casing.
After connecting to LP gas, you must test the gas safety shut-off. Close the manual valve while the unit runs in GAS mode. After about six minutes, the CHECK lamp should light. Then open the valve and apply a bubble solution to the burner jet orifice. If bubbles appear, service is needed. To purge air from the lines after refilling the tanks, switch the unit off and on, up to three or four times.
In the freezer, quick-frozen soft fruits and ice cream belong at the bottom of the aluminum liner, which is its coldest spot. Precooled meat or fish keeps about three times longer in the freezer than in the fresh food section. The coldest spots in the fresh food compartment are under the cooling fins and at the bottom. The warmest are the upper door shelves. Ice forms faster when the trays sit directly on the freezer floor and the thermostat is at its highest setting.
To defrost, switch the unit off, empty it and place the drip tray under the evaporator. Hot water in the ice trays speeds up melting. Never use sharp tools, which can puncture the ammonia system, or hot air blowers. Clean the interior with a lukewarm, weak soda solution. Once or twice a year, check the vents for nests and dust off the rear coils. Separate kits let you reverse the door from right to left or left to right, in light brown or black.
Frequently Asked Questions (FAQs)
Can't find the answer you need? Here are some frequently asked questions about the Dometic RM2554 Refrigerator, and we answer them below.
