atwood HE-0601, HE-0801 Helium RV REFRIGERATOR - Manual (Page 6)

6
ELECTRICAL CONNECTIONS
120 Volts AC Connection
This refrigerator is supplied with a 3-prong AC power
cord which should be plugged into a properly grounded
3-prong receptacle. DO NOT use an extension cord or a
2-prong adapter with the power cord. NEVER cut or
remove the grounding prong from the plug as this is
provided for your safety. It is recommended that the
receptacle be located to the left side of the back of the
refrigerator, approximately 6 inch above the floor. The
cord should be routed to avoid contact with any hot or
sharp metal surfaces which could damage the cord’s
insulation.
The Black wire from the power cord is the Active Line
lead and is connected to the power board at the terminal
label
ed “LINE”. The White wire from the power cord is
the Neutral lead and is connected to the power board at
the terminal labeled “NEUTRAL”.
The AC operating range is: 108 VAC
– 132 VAC
12 Volts DC Connection
The refrigerator’s electronic controls require 12 volt DC
to operate. The DC supply lines should use a minimum
of 18 gauge wire. The positive +12VDC supply wire
(normally red) is connected to the terminal block marked
“+12V IN”. The negative DC return wire (normally black)
is connected to the terminal block marked
“GND”.
DO NOT use the chassis of the refrigerator or the
vehicle as one of the conductors. Connect the two DC
supply wires from the battery or the DC converter
directly to the refrigerator.
The DC operating range is: +9.0 VDC - +15.0 VDC
GAS CONNECTIONS
All gas supply connections must comply with the ANSI A
119.2 (NFPA 1192) and CSA Z240 standards for
Recreational Vehicles.
The gas supply system must incorporate a pressure
regulator to maintain a supply pressure of 11 inches
water column.
Atwood recommends using 3/8 inch copper tubing as the
gas supply line. The gas supply line is connected to the
refrigerator at the inlet of the gas safety valve which is a
3/8 inch SAE (UNF 5/8 -18) male flare fitting.
The gas supply line is pushed up thru a hole in the floor
behind the refrigerator. The hole must be large enough
to provide adequate clearance for the gas supply line
and positioned such that the supply line is not rubbing
against anything in the enclosure. A weather resistant
grommet or seal should be installed around the gas
supply line in the hole thru the floor to prevent vibration
and abrasion.
Checking for gas supply system leaks
All gas supply system connections must be checked for
leaks using soapy water or leak test solution.
NEVER USE A FLAME TO CHECK FOR LEAKS
When using compressed air to check for leaks, the test pressure
must be no more than 1/2 PSI (14 inches of water column).
.TESTING THE GAS SAFETY VALVE
The gas safety valve must be tested after the refrigerator is
connected to the gas supply.
1. Start the refrigerator in the manual GAS mode.
2. Open the lower fresh air intake vent located behind the
refrigerator.
3. Verify that the refrigerator’s burner is lit.
4. Remove one wire from the solenoid of the gas safety
valve.
5. The flame should extinguish and the control will begin
sparking as it begins a 40 second trial ignition.
6. After the 40 second trial ignition, the CHECK indicator
should be lit and the GAS indicator will flash indicating
the burner is not lit. This indicates that the gas safety
valve is working properly.
7. Put the wire back on the solenoid of the gas safety
valve.
8. Close the lower fresh air intake vent.
9. Turn the refrigerator off and then, after 5 seconds, turn
the refrigerator back on to remove the CHECK condition.
REMOVING AND REINSTALLING THE REFRIGERATOR
This procedure should only be done by your RV dealer or an
authorized Atwood service center.
1. Shut off the gas supply line at the LP tank
2. Disconnect the gas supply line at the rear of the
refrigerator. ALWAYS USE two wrenches to loosen and
tighten gas supply connections to avoid possible leaks.
3. Cap the gas supply line
4. Unplug the AC power cord from the receptacle in the
back of the enclosure
5. Disconnect the DC input lines from the powerboard.
6. Loosen the screws anchoring the refrigerator to the
enclosure in both the front and back of the cabinet.
7. Slide the refrigerator out of the enclosure.
When replacing the refrigerator, make sure that the combustion
sealing strips behind the front surface of the breaker are
undamaged and intact. As the refrigerator is slid into the
enclosure, insure that the combustion seal is compressed
uniformly all around the refrigerator between the front breaker and
the edge of the enclosure. To complete the installation, follow the
reverse order of the removal steps above. After making the gas
connections, check all connections for leaks.