Owner`s manual

Page 5
HW42DF Gas Fireplace
Part No. XG0191 - 031010
Installation
Vent Installation
This section covers the installation of direct venting and terminations.
Installation Requirements
■ HW42DFreplacesis certiedforusewithMontigoPremiumSeries(5"/
8")ventingcomponents.
■ Minimumclearancetocombustibleconstructionaroundtheventpipeis1"
on all sides, except on horizontal venting where the top of the pipe must
haveaclearanceofatleast2".
■ UseonlycertiedMontigoventcomponents.(Useofotherpartswillvoid
theMontigowarranty,andmayimpedetheoperationofthereplace.)
■ All joints must be secured with a minimum of two screws per joint
■ Vent terminations must not be recessed in walls or siding
■ Horizontal runs must be supported by a minimum of two supports per hori-
zontal run. A minimum of one screw on each side of support is also required
■ Flex vent sections may be stretched up to 50% of their total length (eg. a
24"sectionmaybestretchedto36")
■ Flex vent sections over 6 feet must fall within the limits set by the venting
graphandmusthaveaminimumverticalriseof3inchesperfootofex.
■ Solid vent sections may be cut less than half way from the female end
■ Venting components can be used in any combination of solid/rigid pipe or
expipeandinanyorientation(Maleconnectorscanfaceinanydirection)
Vent Terminations
Selecting A Termination Location
Choosing your vent termination location will help to determine whether
youneedtouseatopventorrearventreplace.Figure6a,below,shows
typicalreplacelocationsandtheventingoptionstheyprovide.
For a more detailed diagram of allowed termination locations, see Ap-
pendix A.
Cautions:
■ Vent terminations can be very hot. If the termination is less
than7feetaboveapublicwalkway,itshouldbettedwith
acertiedMontigoHeatGuard.(Partno.PTKOG).
■ Do not obstruct, or attempt to conceal, the vent termination.
Theseactionswillaffecttheoperationofthereplace,
and may be hazardous.
■ In heavy snow areas, take extra care to prevent snow
buildup from obstructing the vent termination.
Figure 6a. Fireplace locations and vent terminations.
Installing The Gas Line
ThegaslinemustbeinstalledbeforenishingtheHW42DF Fireplace.
Natural Gasrequiresaminimuminletgassupplypressureof5.5"W.C.
&amanifoldpressureof3.5"W.C.Provisionmustalsobemadefora
1/8"N.P.T.pluggedtappingandbeaccessiblefortestgaugeconnection
immediately upstream of the gas supply controls to the appliance. The
replacegasconnectionandthemainoperatinggasvalveislocated
behind the removable trim at the bottom of the unit and need only be
attachedtothegaslinewithanapprovedtting,asrequiredbythe
applicable installation codes.
To access the replace gas connection the main burner must be
removed as shown below in gure 5b.
•Onlyusegasshut-offvalvesapprovedforusebythestate,province,
region, or governing body, in which the appliance is being installed, or
as required by the applicable installation codes.
•Flexiblegasconnectorsmustnotexceed3feetinlength,unlessitis
allowable within applicable installation codes.
Note: After gas line is connected, each appliance connection,
valve and valve train must be checked while under normal
operating pressure with either a liquid solution, or leak
detection device, to locate any source of leak. Tighten any
areas where bubbling appears or leak is detected until
bubbling stops completely or leak is no longer detected.
DO NOT use a flame of any kind to test for leaks.
Figure 5a. Gas line access.
The appliance and its individual shut-off 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
closing its individual manual shut-off 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).
Burner Tray Gasket
Figure 5b. Gas line access.
Gasline Acces
0.875 dia.
7
to center
2