Figure 9: Gas Control Valve
GAS SUPPLY &
CONNECTIONS
NOTICE: A qualified technician must connect the
heater to the gas supply and leak test the unit before it
is approved for use. Consult all codes.
WARNING: THE UNIT MUST BE INSTALLED AND
CONNECTED IN ACCORDANCE WITH LOCAL
CODES, OR IN THE ABSENCE OF LOCAL CODES,
WITH THE MOST CURRENT EDITION OF THE
NATIONAL FUEL GAS CODE ANSI Z223.1 (NFPA
54) OR CAN/CGA B149 INSTALLATION CODE.
NFPA Code and Hearthstone require the use of a
dedicated sediment trap just upstream of the unit.
Damage to the valve or other components, due to the
lack of a sediment trap (figure 10), are not covered by
warranty.
GAS CONNECTIONS
The gas supply connection is made to the Luno’s gas
control valve at the middle, lower rear of the stove, using a
3/8” male NPT fitting. The supply line should be ½”
diameter, or appropriately sized to provide a sufficient gas
supply to meet the maximum demand of the unit without
undue loss of pressure. We recommend a flexible line to
avoid undue mechanical load on the valve and to ease
thread alignment, but refer to local codes.
CAUTION: Check Gas Type!
GAS SUPPLY
Isolate the Luno from the gas supply piping system by
closing its individual manual shutoff valve during any
pressure testing of the gas supply piping system
at test
pressures equal to or greater than ½ psig. Disconnect the
Luno and its individual shut-off valve from the piping
system when testing the valve and connections
at
pressures equal to, or greater than ½ psig.
GAS PRESSURE ADJUSTMENT
NOTE: A QUALIFIED TECHNICIAN MUST
PERFORM THIS PROCEDURE!
Once connected to the gas supply, the supply line and
manifold gas pressures must be tested. The supply line
pressure is tested, to ensure it meets the minimum gas
supply pressure as listed in the Specifications for the type
of fuel in use (natural gas or LP), by connecting a
manometer to the supply line and adjusting the incoming
pressure if necessary to meet the required supply line
pressure as listed in specifications. The manifold pressure
tap on the gas control valve, refer to Figure 8 for location.
3" MIN.
Cap
Nipple
To Equipment
Inlet
Tee Fitting
Gas Supply
Inlet
Figure 10: Typical Sediment Trap (required in all
installations)
hase - Luno Model 8160
Manual # 6400-40457
Revised: 7/27/2011
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