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Heat & Glo • 350X-AU, 550X-AU Installation Manual • 2279-980
• 12/17
2
Getting Started
A. Design and Installation Considerations
Heat & Glo direct vent gas appliances are designed to
operate with all combustion air siphoned from outside of
the building and all exhaust gases expelled to the outside.
No additional outside air source is required.
Installation MUST comply with local, regional, state and
national codes and regulations. Consult insurance carrier,
local building inspector, fire officials or authorities having
jurisdiction over restrictions, installation inspection and
permits.
Before installing, determine the following:
• Where the appliance is to be installed.
• The vent system configuration to be used.
• Gas supply piping requirements.
• Provisions for optional heat management system.
• Electrical wiring requirements.
• Framing and finishing details.
• Whether optional accessories - devices such as a wall
switch, or remote control - are desired.
C. Tools and Supplies Needed
Before beginning the installation be sure that the following
tools and building supplies are available.
Tape measure
Framing material
Pliers Hammer
Phillips screwdriver Manometer
Gloves
Framing square
Voltmeter
Electric drill and bits -1/4 in. (6 mm)
Plumb line
Safety glasses
Level
Reciprocating saw
Flat blade screwdriver
Non-corrosive leak check solution
1/2 - 3/4 in. (13 - 19 mm) length, #6 or #8 Self-drilling
screws
Caulking material (300 ºF (149 ºC) minimum continuous
exposure rating)
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualified
service technician, service agency or your dealer.
Figure 2.1 Good Faith Wall Surface Temperatures Above Appliance
B. Good Faith Wall Surface/TV Guidelines
NOTICE:
Temperatures listed above are taken with a
temperature measuring probe as prescribed by the test
standard used for appliance certification. Temperatures
on walls or mantels taken with an infrared thermometer
may yield increased temperatures of up to 30
°
F (16
°
C) or
more depending on the thermometer settings and material
characteristics being measured.Use appropriate finishing
materials that are able to withstand these conditions. For
additional finishing guidelines, see Section 10.
MEASUREMENTS FROM
TOP EDGE OF THE OPENING
6 in.
(152 mm)
TO CEILING
12 in.
(305 mm)
147 °F
(64 °C)
APPLIANCE FRONT
FIREPLACE
OPENING
18 in.
(457 mm)
24 in.
(610 mm)
30 in.
(762 mm)
135 °F
(57 °C)
132 °F
(56 °C)
123 °F
(51 °C)
127 °F
(53 °C)
Installation and service of this appliance should be performed
by qualified personnel. Hearth & Home Technologies
recommends HHT Factory Trained or certified professionals.