HearthStone Quality Home Heating Products Inc
STERLING Ht Gas-Fired Direct Vent heater
7. Turn gas control knob counterclockwise to
“ON”.
8. Select “ON” or “T-STAT” position on the
on/off/t-stat switch.
9. Plug in the blower.
10. Set thermostat to “ON” and set the desired
temperature setting.
DETAIL A
TOP OF STOVE
ON-OFF-PILOT CONTROL
KNOB (SEE LIGHTING
INSTRUCTIONS)
DETAIL A
HI TURNDOWN KNOB
PUSH DOWN AND TURN
CLOCKWISE FROM (-) TO (+) FOR
CONTROL OF HI FLAME
Once the pilot has been lit, and the gas control knob
has been turned to the
“ON” position, the m ain
burners
are lit by setting the
“ON/OFF/THERMOSTAT” switch to “ON” or to
“THERMOSTAT”. If usi ng the optional ther mostat,
turn the therm ostat to “ON” and set i t to a higher
position so that it “calls ” for heat (i.e. turns the unit
on). The main burners should lig ht immediately.
Note that the thermostat controls the on/off cycling of
the main burners, but the pilot remains lit regardless
of the thermostat setting. To turn the pilot off, turn
the gas control kn ob fully clockwise to the “Off”
position.
T
URNING
O
FF THE
U
NIT
1.
Set the “ON/OFF/THERMOSTAT” switch to the
“OFF” position, or turn the thermostat to the
“OFF” position.
2. If shutting the unit off for the non-heating season,
turn the gas control knob fully clockwise to the
“OFF” position. Do not force the knob to turn.
P
ILOT
A
ND
B
URNER
F
LAMES
V
ARIABLE
O
UTPUT
C
ONTROL
The gas con trol valve is equipped with a variable
output control. This control varies the rate of heat
produced by the unit by vary ing the gas pressure to
the main burner tube. The length of the burn cycle is
affected by a combination of heat output and the
thermostat setting. If your stove turns on and off too
often, try, first, reducing the burn cycle by turning the
HI/LOW knob, on t he control valv e to a lower
setting. Using the variable output con trol, the heat
output of the unit can be reduced for mild fall and
spring months, or m aximized for the colder winter
months. This adjustm ent can be made, by the
homeowner, as necessary by turning the variabl e
output control knob t o “HI”, “LO”, or any setting in
between.
Ht
(High Turndown)
The Sterling is equipped with a dual valve sy stem.
This allows for the dramatic turndown that
most
other gas systems do not feature. Turn the secondary
valve off, and the rear flames go out leaving the front
flames on for a more relaxed ambience simmer. Turn
the rear flames back on to enjoy the high flames for
more heat. This
Ht
system is technologically
designed to cover all aspects of heating pleasure.
A
IR
S
HUTTER
The air shutter is preset by the manufacturer for
optimum operation and should not need adjustment.
However, it may need adjustment once the unit ha s
been installed to compensate for variations in suppl y
line pressure, altitude, and other variables.
The air
shutter is used to regulate the air-to-ga s combustion
mixture, which in tur n adjusts the size and color of
the flames.
A
IR
S
HUTTER
A
DJUSTMENTS
The air shutter is adjustable while
the stove is
burning. Th e two air sh utters on the em ber burner
are adjustable. The right one (while fa cing the front
of the stove) is for the low burn portion of the ember
burner and the left one (while facing the front of the
stove) is for the high burn portion of the em ber
burner. The adjusters are located underneath the
front of the unit, and operated by using a 3/8” wrench
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