Gas Supply & Connections - HearthStone Tucson 8720 Owner's Manual

Hearthstone Quality Home Heating Products, Inc.
NOTE: If an optional blower is installed now or in the future, ensure the gas line is installed as close to the
floor as possible.
G S
AS 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.
G C
AS ONNECTIONS
The gas supply line connection is made to the
Tucson's gas control valve just inside the left front
leg of the unit 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!
Figure 9: Gas Control Valve
&
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AS UPPLY
This appliance and its individual shutoff valve must
be disconnected from the gas supply piping system
during any pressure testing of that system at test
pressures in excess of ½ psig. The Tucson must be
isolated 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.
G P
AS RESSURE
NOTE: A QUALIFIED TECHNICIAN MUST
PERFORM THIS PROCEDURE!
O
NCE CONNECTED TO THE GAS SUPPLY
SUPPLY LINE AND MANIFOLD GAS PRESSURES
. T
MUST BE TESTED
,
IS TESTED TO ENSURE IT MEETS THE MINIMUM
GAS SUPPLY PRESSURE AS LISTED IN THE
S
PECIFICATIONS FOR THE TYPE OF FUEL IN USE
(
NATURAL GAS OR
MANOMETER TO
ADJUSTING THE
NECESSARY TO MEET THE REQUIRED SUPPLY
LINE PRESSURE AS LISTED IN SPECIFICATIONS
T
HE MANIFOLD PRESSURE TAP ON THE GAS
18
Tucson Model 8720
A
DJUSTMENT
HE SUPPLY LINE PRESSURE
LP),
BY CONNECTING A
THE SUPPLY LINE
INCOMING PRESSURE
,
THE
AND
IF
.