User manual DOMETIC RM4223 INSTALLATION

[. . . ] RECORD THIS INFORMATION FOR FUTURE REFERENCE BEFORE INSTALLING THE UNIT: Model No. Date Purchased Place of Purchase USA SERVICE OFFICE The Dometic Corp. Cambridge, Ontario Canada N3H 2N7 Phone: 519 653 4390 FOR SERVICE CENTER ASSISTANCE CALL: 800 544 4881 REFRIGERATOR MODEL RM 4223 For Mobile Home or Recreational Vehicle Installation Operation by LP Gas, 12V DC or 120V AC FOR CHILD SAFETY DANGER: Risk of child entrapment. Before you throw away your old refrigerator: Take off the doors, leave the shelves in place, so that children may not easily climb inside. FOR YOUR SAFETY If you smell gas: 1. [. . . ] IMPORTANCE OF LEVELING A REFRIGERATOR Remember to level the vehicle when stopping for more than an hour, otherwise the cooling unit could be permanently damaged due to overheating if it is left "ON". When the vehicle is moving, the leveling is not critical as the rolling and pitching motion of the vehicle will pass to either side of level, keeping the liquid ammonia from accumulating in the evaporator tubing. In an absorption refrigerator system, ammonia is liquefied in the finned condenser coil at the top of the refrigerator. The liquid ammonia then flows into the evaporator (inside the freezer section) and is exposed to a circulating flow of hydrogen gas, which causes the ammonia to evaporate, creating a cold condition in the freezer. The tubing in the evaporator section is specifically sloped to provide a continuous movement of liquid ammonia downward by gravity through this section. If the refrigerator is operated when it is not level and the vehicle is not moving, liquid ammonia will accumulate in sections of the evaporator tubing. This will slow the circulation of hydrogen and ammonia gas, or in severe cases, completely block it, resulting in a loss of cooling. 7 2. CONTROLS The gas and electric controls are located at the rear of the refrigerator and are accessible through the lower vents in the outside wall of the vehicle. A B C D E F G H = = = = = = = = DC ON/OFF SWITCH AC ON/OFF SWITCH ELECTRIC THERMOSTAT GAS ON/OFF VALVE PIEZO IGNITER GAS THERMOSTAT DC TERMINAL BLOCK GAS INLET FITTING FIG. LP GAS OPERATION After initial installation, servicing, or changing gas cylinders, etc. , the gas line may contain some air which should be allowed to escape by briefly turning on the refrigerator or other gas appliances. Check that there is enough gas. Open any on-board shutoff valve which is in the gas line to the refrigerator. 2) Open the lower vent at the rear of the refrigerator on the outside of the vehicle, and switch the electrical toggle switches A and B to the "OFF" position. 4) Depress the knob (D) of the flame failure device, turn it to position ON, and hold it down while depressing the piezo igniter button (E) several times in quick succession (a click should be heard each time it is depressed). 6) Release the knob and check for flame by looking through the opening in the metal burner cover. If the burner fails to light within a couple of attempts, contact a qualified technician or your dealer. NOTE: The refrigerator has a flame failure device which will automatically shut off the gas to the burner if the flame is blown out. While the knob (D) is being held in, this device is temporarily inoperative. 8) If the ambient temperature is above 80°F and/or the door of the refrigerator is opened frequently the knob (F) should be left in higher position. 9) To terminate gas operation, turn knob (D) to the "OFF" position. DO NOT attempt to operate the refrigerator by both gas and electricity at the same time. Always ensure that one method of operation is turned off before using the alternate energy source. 8 !WARNING Most LP gas appliances used in recreational vehicles are vented to the outside of the vehicle. When parked close to a gasoline pump, it is possible that the gasoline fumes could enter this type of appliance and ignite from the burner flame, CAUSING A FIRE OR AN EXPLOSION. [. . . ] 2) By using a phillips screwdriver, remove the screw (B) and carefully withdraw the burner cover box. 3) To clean the burner, unscrew the screw (C) that fixes the burner on the boiler tube and be careful in order not to lose the washer. 5) To examine and eventually clean the burner jet, unscrew the gas pipe union (K) and pull out the burner jet (L). 6) Clean the jet by washing it in alcohol and blowing it through with air. ! [. . . ]