UNIQUE UGP 2
3
Installation and Operating Instructions
Installation
For best performance at high ambient temperatures, there must be free air
circulation over the cooling unit at the rear of the freezer.
Ensure that there is a free air space above the freezer and that the flue (chimney) on
top of the cabinet is not covered in any way. Do not place the freezer in a space
where air circulation is restricted. Follow “clearance” instructions.
This UNIQUE 2 appliance has been certified as a portable camping appliance in North
America it must be used as a portable camping appliance for use outdoors in sheltered
area. While using on electrical operation this unit can be used in an enclosed area but
must still be protected from moisture as comply with all clearances.
For installation, for maintaining proper clearances from combustible material to the
freezer, the following minimum clearance must be observed:
Clearances
Minimum clearances to combustible materials are: Top 16”, Sides 2”, Rear 4”
Chapter
2
UNIQUE UGP 2
4
Note: DO NOT install the appliance directly on carpeting. Carpeting must be
removed or protected by a metal or wood panel beneath the appliance, which
extends at least the full width and depth of the appliance.
Keep appliance area clear and free from combustible materials, gasoline and other
liquids with flammable vapors.
WARNING – DO NOT USE FLAME TO CHECK FOR GAS LEAKS
Levelling
Ensure the freezer is leveled by using a 2ft level; the operation of this unit uses an
absorption system which requires the appliance to be level in order to operate
effectively.
Connecting to Gas Cylinder
The freezer is designed for a 20# steel propane self-contained fuel cylinder of not
more 4.6 gal (20lbs) capacity. The cylinder(s) must be constructed and marked in
accordance with the specifications for LP-gas cylinders of the U.S. Department of
Transportation, DOT SPEC. 39 (49CFR 178.65).
Connecting of Gas Supply
1. Use supplied regulator and hose to connect your appliance to the gas supply.
2. Hook up the 5/8”-18UNF connection to the back of your appliance using a
backup wrench.
3. Attach the regulator cap to the tank inlet connection and ensure it is tight.
UNIQUE UGP 2
5
4. After connecting, all
gas connections must be checked for leaks
. For this, put
a soapy solution on all gas connections, turn on the gas cylinder manual valve and
watch for bubbles. Never use an open flame to check for leaks.
Note: The gas supply system must incorporate a pressure regulator to maintain a supply
pressure of not more than 12” water column and no less than 11” water column. (Max
setting).
General Operating Instructions
Importance of Leveling a Freezer
The freezer must be adjusted to a vertical position in both directions. In an absorption
refrigeration system, ammonia is liquefied in the finned condenser coil at the top rear of
the freezer. The liquid ammonia then flows into the evaporator (inside the freezer) and is
exposed to circulating flow of hydrogen gas, which causes the ammonia to evaporate,
creating a cold condition in the freezer.
When starting this freezer, the cooling cycle may require 6 to 8 hours of running time to
begin cooling before the cooling unit is fully operational, you can then begin slowly
loading the compartment.
The tubing in the evaporator section is specifically sloped to provide a continuous
movement of liquid ammonia, flowing downward by gravity through this section. If the
freezer is operated when not level, 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. Warranty will not cover
recharge/rebuild if caused by not running the freezer level.
This freezer operates LP Gas (Propane), 110V (Electricity) and 12V DC
Gas Operation
“Start Up” Procedure
After initial installation, servicing, or changing gas cylinders etc., the gas pipes may
contain some air which should be allowed to escape by briefly turning on the freezer.
This will ensure that the flame lights immediately.
1. Make sure that all valves between the gas container and the freezer are open.
2. Turn selector switch (E) to gas.
3. Depress the safety device control (A) and hold it down while immediately
depressing the electronic igniter button (C).
4. Check the flame indicator (B) to see whether the flame is alight.
5. Keep the safety device control (A) depressed for a further 10-15 seconds.
