Alpine STi Series Gas Fireplaces
5
INSTALLATION REQUIREMENTS
Because masonry chimneys may crack due to settling,
chimney fires, water damage, etc. A thorough
inspection for this type of damage is strongly
encouraged. Any substantial damage must be repaired
previous to installation. The flue liners provided
should be adequate if damage is minor.
PREPARING EXISTING FIREPLACE
FOR INSERT INSTALLATION
Thoroughly review the needed clearances on page
16 of this manual before proceeding.
1) When preparing an existing fireplace for an
Alpine insert, ensure that the clearances in this
manual are strictly adhered to.
2) Measure fireplace opening to ensure the
purchased product will fit.
3) Check fireplace dimensions on the installation site
before proceeding with installation. This will
ensure proper clearances and assist in identifying
potential problems before installation.
4) Review the vent termination requirements before
proceeding with installation.
5) Ensure that the body of the appliance will fit into
the existing fireplace opening and that the existing
chimney can accommodate the two 3” liners
necessary for this insert.
6) To determine if the two chimney liners will fit
through the existing damper, the damper must be
either bolted or clamped open. If the liners will
not fit through the damper, or has excessive
bends, it must be removed.
7) Plan gas piping and routing (see “Routing Gas
Piping to Fireplace” on page 6).
MINIMUM FIREPLACE OPENING
Model Width Height Depth
STi-270 27.5” 20.5” 16.75”
STi-310 31.5”
23 ” 16.75”
STi-360 36.5”
25” 16.75”
The appliance and its individual shutoff valve
must be disconnected from the gas supply
piping system during any pressure testing of
that system when test pressures are in excess
of 1/2 psig. The appliance 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 when test pressures are equal to or less
than 1/2 psig.
Burner Inlet Orifice Sizes:
STi – 270
STi – 310
STi – 360
NG
#36
#33
#31
LP
#53
#52
#51
Max. Input Rating –
STi – 270
STi – 310
STi – 360
30,000
34,000
38,000
30,000
34,000
38,000
Min. Input Rating –
STi – 270
STi – 310
STi – 360
18,000
21,000
22,000
21,000
24,000
26,000
Note: Output Capacity is a thermal efficiency rating
determined under continuous operating conditions and was
determined independently of any installed system. Vent
height may or may not change your efficiency ratings.
Min. Supply Pressure
Natural Gas
5.0” w.c.
Propane 11.0”
w.c.
Max. Supply Pressure
Natural Gas
7.0” w.c.
Propane 13.0”
w.c.
Manifold Pressure
Natural Gas
3.5” +/-0.2” w.c.
Propane
10” +/-0.2” w.c.
Minimum Gas Line Pipe Size: 1/2”
Electrical 120 VAC System
Amperage Rating: 0.50 Amps
Variable Speed Fan: Variable Speed 160 CFM
SYSTEM SPECIFICATIONS
(2500 to 6500 feet altitude)
