HearthStone Quality Home Heating Products, Inc.
Modena Model #8140
14
Figure 9: Gas Control Valve
G
AS
S
UPPLY
&
C
ONNECTIONS
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.
G
AS
C
ONNECTIONS
The gas supply connection is made to the Modena’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!
G
AS
S
UPPLY
Isolate the Modena 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 (3.5kPa).
Disconnect the Modena 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.
G
AS
P
RESSURE
A
DJUSTMENT
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 9
for location.
3" MIN.
Cap
Nipple
To Equipment
Inlet
Tee Fitting
Gas Supply
Inlet
Figure 10: Typical Sediment Trap
(required in all
installations)
