Thetford N500 Series Installation Manual - Manual (Page 8)

Installation Manual 8
Examine the gas supply system for leaks:
WARNING: Do not allow the leak detecting solution to
touch the electrical components. Many liquids are
electrically conductive and can cause a shock hazard,
electrical shorts, and in some cases, fire.
Use a solution of liquid detergent and water to examine the gas
supply line and all gas connections for leaks.
If you use compressed air for the test:
- The pressure at the manual shut off valve of the refrigerator
must not be more than 1/2 psig (14 inches Water Column).
- If the air pressure is more than 1/2 psig (14 inches Water
Column), remove the gas supply line from the bulkhead
fitting of the refrigerator before the test.
- If the air pressure is equal to or less than 1/2 psig (14
inches Water Column), close the manual shutoff valve of
the refrigerator before the test.
Ignition - propane gas operation (N400 models):
1. Open the valve at the propane gas storage tank.
2. Turn the thermostat [1] to the 5 position.
3. Turn the selector switch [2] to the propane gas position ( ).
4. Push and hold in the safety valve [4] and push in the igniter
[3] several times in rapid succession, for about five seconds:
WARNING: Do not hold in the safety valve for more than
30 seconds. If there is no flame in this time, wait at least
five minutes before you try ignition again. If you continue
to hold in the safety valve, gas will collect in the burner
area. This could cause a fire or explosion and result in
dangerous personal injury or death.
- When a flame is present and the flame meter [5] moves
into the green area, release the safety valve.
- If the flame meter does not move into the green area, do
this step again.
5. Turn the thermostat to the temperature setting that you wish.
Ignition Start Up
Connect the Propane Gas Components
This refrigerator operates on propane gas at a pressure of 11
inches Water Column Propane.
Connect the propane gas supply system:
WARNING: Be very careful when working on or near the
propane gas system.
- Do not smoke or use an open flame near the propane
gas system.
- Do not use an open flame to examine for leaks.
- Do not connect the refrigerator to the propane gas tank
without a pressure regulator between them.
- To avoid a propane gas leak, always use two wrenches
to tighten or loosen the gas supply line connections.
- Leaking propane gas can ignite or explode and result
in dangerous personal injury or death.
Connect the gas supply line to the refrigerator:
- Make sure all tubing and fittings obey all local, state, and
national codes about size and type.
- Make sure that all flexible metal connectors obey the current
CAN1-6.10 Standard.
- Use 3/8” diameter copper tubing as the propane gas supply
line and use a 3/8” SAE (UNF5/8 -18) female flare fitting as
the connection to the refrigerator.
- Put the gas supply line up through the floor of the enclosure
and in a manner to prevent vibration and abrasion.
- Make sure the hole through the floor is large enough to
allow clearance for the gas supply line.
- Put a weather resistant seal (grommet, sealant, etc.)
around the gas supply line where it goes through the floor
to prevent vibration and abrasion.
- Attach the gas supply line to the bulkhead fiting [2] of the
refrigerator (See Art00975).