Thelin GNOME Installation And Operating Instructions Manual - page 17
GNOME
DIRECT VENT GAS HEATER
17
Mobile Home Installation
Direct Vent appliances installed in Mobile Homes
must be secured to the floor in a minimum of two
locations. Drill holes through the two back legs and
counter sink and secure with lag screws. Fill
counter sink holes with putty or furnace cement and
paint.
Alcove
This heater may be installed in an alcove with the
following minimum dimensions:
Width:
45”
Height:
45”
Depth:
27”
Venting Requirements
For proper venting, see Figure 5 and install
according to the following requirements.
WARNING: The gas appliance and vent system
must be vented directly to the outside of the
building and never be attached to a chimney serving
a separate solid flue or gas burning appliance. Each
direct vent gas appliance must use its own
separate vent system. Common vent systems are
prohibited.
Installer
The installer should:
Wear gloves and safety glasses for
protection.
Exercise extreme caution when using
ladders or on roof tops.
Be aware of electrical wiring locations in
walls and ceilings.
PLANNING THE INSTALLATION
There are two basic types of Direct Vent
installations:
Horizontal termination (Figure 5 and Figure 6)
Vertical termination (Figure 5 through Figure 7)
When planning your installation, it will be
necessary to select the proper length of vent pipe for
your particular requirements. For horizontal
installations, determine the minimum clearance
from the rear of the appliance to the wall (see the
Listing Label). It is also important to note the wall
thickness. Select the amount of vertical rise desired
for “vertical-to-horizontal” type installations. For
vertical installations, determine the length of vent
pipe required by measuring the distance from the
appliance flue outlet to the ceiling, the ceiling
thickness, the vertical rise in the attic or second
story, and allow for sufficient vent height above the
roof line. For two-story applications, firestops are
required at each floor level. If an offset is needed in
the attic, additional pipe and elbows will be
required. Venting terminals shall not be recessed
into a wall or siding.
Snorkel
For installations requiring a vertical rise on the
exterior of a building, 14” or 36” tall Snorkel
Termination, as shown in Figure 5, are available. If
the Snorkel Termination must be installed below
grade (i.e., basement application), proper drainage
must be provided to prevent water from entering the
Snorkel Termination (see Figure 5). Do not
attempt to enclose the Snorkel within the wall or
any other type of enclosure.