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106442
MDVFST DIRECT-VENT GAS FIREPLACE
®
INSTALLATION
Continued
GAS LINE HOOKUP
Figure 39 - Typical Exterior Wall Gas
Shut-Off Installation
WARNING: Gas line hookup
should be done by your gas sup-
plier or a qualified service person.
WARNING: Before you pro-
ceed, make sure your gas supply
is OFF.
An equipment shutoff valve has been in-
cluded in the appliance’s gas supply system.
You may consider installing an extra gas
shutoff valve outside the appliance’s enclo-
sure (check with local codes) where it can be
accessed more conveniently with a key
through a wall as shown in Figure 39.
Route a 1/2” NPT black iron gas line to-
wards the appliance coming in from the left.
It is recommended to route the pipe between
the stand of the firebox and the surround of
the fireplace (see Figure 40).
IMPORTANT:
The appliance and its indi-
vidual equipment shutoff valve must be
disconnected from the gas supply piping
system during any pressure testing of that
system at test pressures in excess of 1/2 psig.
(3.5 kPa). The appliance must be isolated
from the gas supply piping system by clos-
ing its individual equipment shutoff valve
during any pressure testing of the gas supply
piping system at test pressures equal to or
less than 1/2 psig. (3.5 kPa).
Key
Extension
Equipment
ShutOff Valve
CAUTION: Compounds used
on threaded joints of gas piping
shall be resistant to the action of
Liquefied Petroleum (LP or pro-
pane), and should be applied
lightly to ensure excess sealant
does not enter the gas line.
CAUTION: Do not kink flex-
ible gas line.
WARNING: All gas piping
and connections must be tested
for leaks after the installation is
completed.
After ensuring that the gas valve
is open, apply a soap and water
solution to all connections and
joints. If bubbles appear, leaks
can be detected and corrected.
Do not use an open flame for leak
testing and do not operate any
appliance if a leak is detected.
Back Wall
Of Appliance
Incoming 1/2"
Gas Line
Permitted by
Local Codes
Sediment Trap (Not Supplied)
Figure 40 - Sediment Trap
WARNING: Improper installa-
tion, adjustment, alteration, ser-
vice, or maintenance can cause
injury or property damage. Refer
to this manual. For assistance or
additional information, consult a
qualified installer, service
agency, or gas supplier.
GAS RATING
TYPE OF GAS NATURAL PROPANE/LP
Max. Input Rating: 30,000 Btu/hr 28,000 Btu/hr
Orifice Size (0-4,500 Ft.): 7/64" #52
Manifold Pressure: 3.5 in. WC 10.0 in. WC
**Minimum Supply Pressure: 4.5 in. WC 11.0 in. WC
**Maximum Supply Pressure: 10.5 in. WC 13.0 in. WC
** For the purpose of input adjustment.
1. Install a sediment trap between the in-
coming gas line and the gas control
valve (see Figure 40). The sediment
trap should extend down the center of
the pipe. Refer to your local codes.
2. Prepare incoming gas line and check
with local codes regarding the use of
teflon tape. Complete your gas line in-
stallation by connecting incoming gas
line with flexible gas line (included).
Secure tightly with a wrench, but Do
NOT Overtighten.