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FIREPLACE and HEARTH DIMENSIONS
This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built
fi replace, vent free appliance, or in listed ventless fi rebox enclosure. It has been design certifi ed
for these installations.
Exception: DO NOT install this appliance in a factory-built fi replace that includes instructions
stating it has not been tested or should not be used with unvented gas logs.
Use manufacturer's installation and clearance require-
ments as defi ned in their manual.
The PH Series unvented room heater is approved for instal-
lation into the following unvented fi replaces:
GCUF(32,36,42) and VFR(32,36,42) Series Fireboxes
The PH Series unvented room heater may also be installed
into a Ventless Firebox Enclosure for Gas Fired Decorative
Type Unvented Room Heaters per ANSI Z21.91b.2004,
as long as fi rebox hearth dimensions meet the minimum
hearth dimensions shown below.
D
A
MODEL
A
PH18
25"
(635 mm)
PH24
29"
(737 mm)
PH30
35"
(889 mm)
Figure 1 -
Hearth Minimum Dimensions
Barriers such as the bottom of a glass door
frame placed in front of a gas log set can
change the air fl ow characteristics of the
fi replace which in turn can cause the unit
to overheat and malfunction.
65D2035
C
B
B
C
13"
17
1
⁄
"
2
(330 mm)
(445 mm)
(432 mm)
13"
19
1
⁄
"
2
(330 mm)
(495 mm)
(432 mm)
13"
25
1
⁄
"
2
(330 mm)
(648 mm)
(432 mm)
IMPORTANT INFORMATION FOR THE IN-
STALLATION OF THIS GAS LOG SET
The following are guidelines for placing a gas log set in
a fi replace that has a restrictive barrier along the bottom
front opening of the fi replace. Some examples of barri-
ers are glass/screen door frames and sunken/recessed
fi replaces.
Height of
Restriction (x)
No Restriction
0" to 1
1
⁄
"
2
Greater than 1
Greater than 3"
*Any barrier greater than 3" placed in front of the gas log
set is not recommended by the manufacturer.
NOTE: Non combustible material such as refractory brick
may be used to line the fl oor of the fi replace in order to raise
the height of the gas log set in relation to a restrictive barrier.
If the unit is raised, the minimum height dimension listed in
the homeowner's manual must not be exceeded.
NOTE: If the log set is equipped with a remote receiver, a
restrictive barrier may reduce the battery life by increasing
the ambient temperature inside the fi replace. Placement
of the receiver outside of the fi replace will extend the
battery life.
FP2530
Glass door
frames with ad-
justable louvers
D
should have
the louvers
17"
fully open while
the unit is in
17"
operation
17"
Height of restrictive barrier
caused by glass door
frames, recessed fi replac-
es, etc. from the base or
bottom surface of the unit.
(Refer to Table).
Figure 2 -
Reference Drawing of a Natural
Flame Log Set in an Enclosure
Minimum Depth of
Fireplace/Firebox
1
⁄
" to 3"
2
X
PH Gas Logs
13"
16"
16"
*
The log set should
be placed against or
as near as possible
to the rear wall of the
fi replace
Depth of
Fireplace/
Firebox
(Refer to
Table)
FP2794
7
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