![Design Dynamics VTD-18NV-JHB Owner'S Operation And Installation Manual Download Page 7](http://html1.mh-extra.com/html/design-dynamics/vtd-18nv-jhb/vtd-18nv-jhb_owners-operation-and-installation-manual_2486802007.webp)
www.fmiproducts.com
114370-02H
7
Figure 4 - Attaching Damper Clamp
Manufactured
Fireplace
Masonry
Fireplace
Damper
Damper
Clamp
Damper
Damper
Clamp
Damper
INSTALLING APPLIANCE
ASSEMBLY
WARNING: If installing in a
sunken fireplace, special care
is needed. You must raise the
fireplace floor to allow access
to appliance control panel. This
will insure adequate air flow
and guard against sooting and
controls being damaged. Raise
fireplace floor with noncombus
-
tible material. Make sure material
is secure.
CAUTION: Do not pick up ap
-
pliance assembly by logs. This
could damage unit. Only handle
assembly by grates.
IMPORTANT:
Make sure the appliance is level.
If unit is not level, unit will not work properly.
Installation Items Needed• control
cover kit (provided with appliance)
• approved flexible gas hose and fittings
(provided with appliance) (if allowed by local
codes)
• sealant (resistant to propane/LP gas, not
provided)
1. Apply pipe joint sealant lightly to male
threads of gas fitting (not provided). Con
-
nect approved flexible gas hose to inlet
side of gas control valve (see Figure 5).
Figure 5 - Attaching Flexible Gas Hose to
Gas Control Valve
Flexible Gas Hose
(If Allowed by Local Codes)
Gas
Control
Valve
INSTALLATION
Continued
2. Position appliance in fireplace.
3. Connect to gas supply. See
Connecting
To Gas Supply,
page 8.
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 3/8" NPT (National
Pipe Thread) inlet connection to
the pressure regulator.
WARNING: A qualified ser
-
vice person must connect heater
to gas supply. Follow all local
codes.
CAUTION: Never connect
propane/LP fireplace directly to
the propane/LP supply. This unit
requires an external regulator
(not supplied). Install the exter
-
nal regulator between the unit
and propane/LP supply
WARNING: Never connect
natural gas fireplace to private
(non-utility) gas wells. This gas
is commonly known as wellhead
gas.