Superior MHW36R User manual

SAVE THIS BOOK
This book is valuable. In addition to instructing you on how to install and manintain your appliance, it also
contains information that will enable you to obtain replacement parts or accessory items when needed. Keep
it with your other important papers.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Installateur : Laissez cette notice avec l’appareil.
Consommateur : Conservez cette notice pour
consultation ultérieure.
This fireplace is approved for use as a wood burning fireplace or for use with a vented gas log approved to
ANSI Z21.60 or Z21.84 standards or for use with a vent-free gas log heater approved to ANSI Z21.11.2 standard.
FOR CANADA: The authority having jurisdiction
(such as the municipal building department, fire
department, etc.) should be contacted before
installation to determine the need to obtain a
permit.
POUR LE CANADA: L’autorité compétente (comme le
service municipal du bâtiment, les pompiers, etc.) doit
être contacté avant l’installation afin de déterminer la
nécessité d’obtenir un permis.
Installation and Operation Instructions
Superior™ Clean-Face Round Back Fireplace with
Bi-Fold Doors and Combustion Air Kit
PFS
®
USC
P127312-01
P/N 127312-01 Rev. B 08/2014 Models
MHW36R
Before you start your rst re, read this manual care-
fully to be sure you understand your replace system
completely. Failure to follow these suggestions could
result in hazardous operation or replace malfunction,
creating a serious potential for personal injury and/
or property damage.
If you have any questions regarding the safe use or
operation of your replace, contact your local distribu-
tor or your contractor/builder.
Most chimney systems will require on site completion
after placement of the manufactured home.
The information contained in this manual apply
to the model(s) replace identied on this page.
This information will help you obtain safe and
dependable service from your replace system.
Keep this document in a safe place for future
reference.

SuperiorFireplaces.US.com 127312-01B2
TABLE OF CONTENTS
Safety .................................................................. 2
Specications ...................................................... 3
Fireplace Installation............................................ 3
Venting Installation .............................................. 6
Optional Gas Line Installation............................ 13
Finishing Fireplace ............................................ 15
Operation and Maintenance Guidelines ............ 15
Replacement Parts ............................................ 17
Technical Service............................................... 17
Parts .................................................................. 17
Accessories ....................................................... 18
Important Notices .............................................. 21
SAFETY
as to the particular requirements concerned
with the installation of all factory built replaces.
CAUTION: The structural
integrity of the mobile home
    

WARNING: Do not install a

the manufacturer's instructions



FOR YOUR SAFETY
 



 
   
     

 


    -



-


   
-
-


-
  
   


-
   

IMPORTANT: Check HUD re-
quirements before installing this

These units are intended for installation in
manufactured (mobile) homes. These units
may also be installed in buildings of conven-
tional construction including modular housing,
providing all instructions provided herein are
strictly adhered to. These replaces include a
combustion air kit and bi-fold doors.
Before beginning the installation of the
fireplace, read these instructions through
completely.
• This INNOVATIVE HEARTH PRODUCTS
replace and its components are safe
when installed according to this instal-
lation manual. Unless you use INNOVA-
TIVE HEARTH PRODUCTS approved
components, which have been designed
and tested for the replace system, you
may cause a re hazard.
• The INNOVATIVE HEARTH PRODUCTS
warranty will be voided by and INNOVA-
TIVE HEARTH PRODUCTS disclaims
any responsibility for the following actions.
a. Modification of the fireplace, com-
ponents, doors, air inlet system and
damper control.
b. Use of any component part not manu-
factured or approved by INNOVATIVE
HEARTH PRODUCTS in combination
with an INNOVATIVE HEARTH PROD-
UCTS replace system.
Proper installation is the most important step
in ensuring safe and continuous operation of
the replace. Consult the local building codes

SuperiorFireplaces.US.com
127312-01B 3
SPECIFICATIONS
42"
361/4"221/8"
63/4"
73/4"
93/8"
3"
36"
41"
1"
J-Box
Access
RH SIDE VIEW
LH SIDE VIEW
Gas Line Conduit
Sleeve (Both Sides)
1/2" Air Space
Back and Sides
0" To Top
Spacer
Round Top Te rmination
Storm Collar
Flashing
Firestop
1" Airspace
To Combustible
Materials
Combustible
Wall Board
No Combustible
Material On Face
Not Less Than 14"
To Perpendicular
Sidewall
Hearth Extension
52" x 16"
0" To
Bottom
8" Each
Side
221/16"
5/8"
13"
Rear View
of Fireplace Opening for
Outside Air
Firestop
Thimble
91/2"
14"
14"
FIREPLACE INSTALLATION

To determine the safest and most efcient
location for the replace, you must take into
consideration the following guidelines:
1. The location must allow for proper clear-
ances (see Figures 1 and 2, page 4).
2. Consider a location where the heat output
will not be affected by drafts, air condition-
ing ducts, windows or doors.
3. A location that avoids the cutting of
joists or roof rafters will make installation
easier.
4. An outside air kit is included with this re-
place (see Outside Air Kit on page 6).
WARNING: Do not install this


SuperiorFireplaces.US.com 127312-01B4


Back and sides of replace 1/2" minimum*
Floor under replace** 0" minimum
Wall to front of replace 36" minimum
Perpendicular wall to opening 14" minimum
Top spacers 0" minimum
Mantel clearances see Mantels,
page 15
Chimney outer pipe surfaces 1" minimum
* Not required at nailing anges
** See step 2 of Framing, page 5
-



Minimum height e chimney, measured from
base of replace to ue gas outlet of termina-
tion, is 14 feet* for straight ue or a ue with
one elbow set. Maximum distance between
elbows is 2 feet.
13" Min.
Maintain 1/2" Air Space
Between Framing
and Fireplace 43 5/8"
Min.
41 3/4" Min.
61 11/16"Min.
Figure 2 - Corner Installation
FIREPLACE INSTALLATION
Continued
Maximum height of any system is 40 feet.*
This measurement includes replace, chim-
ney sections and height of termination assem-
bly at level of ue gas outlet (see Figure 3).
Figure 3 - Standard and Alternate
Venting Installation
Effective Height of
Termination Cap
Effective Height of
Termination Cap
Effective Height of
Termination Cap
RT-8DM RT-8DM
RT-8DM
14' Min.
Height
Standard Installation Alternate Installation
2' Max
Pipe Length
30E-8DM
11' for
Manufactured
Home
Application
14' Min.
Height
11' for
Manufactured
Home
Application
40' Max.
Height
20' for
Manufactured
Home
Application
Effective Height of
Termination Cap
Effective Height of
Termination Cap
Effective Height of
Termination Cap
RT-8DM RT-8DM
RT-8DM
14' Min.
Height
Standard Installation Alternate Installation
2' Max
Pipe Length
30E-8DM
11' for
Manufactured
Home
Application
14' Min.
Height
11' for
Manufactured
Home
Application
40' Max.
Height
20' for
Manufactured
Home
Application
Standard
Installation
Alternate
Installation
Alternate
Installation
42 1/4"
41 3/4"
22 5/8"
10"
Figure 1 - Framing Dimensions
-


*For manufactured home application, minimum
height is 11' for straight ue or ue with one elbow
set. Maximum height of any system is 20'.

SuperiorFireplaces.US.com
127312-01B 5
Figure 4 - Nailing Flanges
Screw
or Nail
Nailing
Flange
FIREPLACE INSTALLATION
Continued
Figure 5 - Hearth Extension
Seal Gap
Fireplace
Front
Ember
Protector
Ember
Protector
Seal Gap Hearth
Extension
FRAMING
1. Frame opening for replace using dimen-
sions shown in Figures 1 and 2.
2. The replace may not be installed on
carpeting, tile (other than ceramic) or any
combustible material other than wood
ooring, replace must be installed on a
metal or wood panel extending full width
and depth of replace. (It is acceptable to
cover two outside ends or columns of top
louver panel leaving four center columns
open).
3. Set replace directly in front of this open-
ing and slide unit back until nailing anges
touch side framing.
4. Check level of replace and shim with
sheet metal if necessary.
5. Before securing replace to prepared fram-
ing, metal ember protector (provided) must
be placed between hearth extension (not
supplied) and under bottom front edge of
replace to protect against glowing embers
falling through. If replace is to be installed
on a raised platform, a Z-type ember pro-
tector (not supplied) must be fabricated to
t your required platform height. Ember
protector should extend under replace
a minimum of 1 1/2". The ember protector
should be made of metal material.
6. Using screws or nails, secure replace to
framing through anges located on sides
of replace (see Figure 4).
HEARTH ExTENSION
A hearth extension projecting a minimum of
16" in front of and a minimum of 8" beyond
each side of the replace opening is required
to protect combustible oor construction in
front of the replace. Use an equal material
which meets the following specications: a
layer of noncombustible, inorganic material
having a thermal conductivity of k = .84 BTU
IN/FT2 HR °F (or less) at 1" thick. For example,
if the material selected has a k factor of 0.25,
such as glass ber, the following formula
would apply:
0.25 x 1.0" = 0.30" thickness required
0.84
Thermal conductivity "k" of materials can be
obtained from the manufacturer or supplier of
the noncombustible material. If the hearth ex-
tension is to be covered, use noncombustible
material such as tile, slate, brick, concrete,
metal, glass, marble, stone, etc. Provide
a means to prevent hearth extension from
shifting and seal gap between replace frame
and hearth extension with a noncombustible
material (see Figure 5).



Fireplace Front
Elevated

SuperiorFireplaces.US.com 127312-01B6
Figure 6 - Outside Air Kit AK6-WE Installation
Outside
Air Vent
Termination
Insulation Air Vent Location
Must Allow
for Bushes,
Snow and
Other Possible
Obstructions
Secure to Collar with
Metal Tape, Screws or
Tie Straps
Left Side
Mounting
Shown
Insert Inner Tab of
Inlet Tube into Slot
on Outer Surround
VENTING INSTALLATION
OUTSIDE AIR KIT
Installation of an outside air kit should be
completed during the rough framing of
replace due to nature of its location. The
supplied ex duct measures approximately
10" compressed and up to approximately 36"
extended. Outside combustion air is accessed
through mobile home oor using air kit model
AK6E, included with the replace, or a side
wall using optional air kit model AK6-WE (see
Accessories on page 18).
Installer may choose either left or right side
mounting to allow for proper wall/rafter
clearances.
For AK6-WE Only: Construct a 4.5" x 4.5"
framing or opening on exterior wall (see
Figure 6, page 6).
For AK6E Only: The outside air vent is in-
stalled through a ventilated crawl space (see
Figure 7, page 7).

SuperiorFireplaces.US.com
127312-01B 7
Figure 7 - Outside Air Kit AK6E
Installation
Floor
Flex Duct
Extends
Up to 36"
Insulation
Secure to Collar with
Metal Tape, Screws or
Tie Straps
Left Side
Mounting
Shown
Insert Inner Tab of
Inlet Tube into Slot
on Outer Surround
VENTING INSTALLATION
Continued
1. Locate and remove air inlet cover plate on
replace‘s outer surround. Save screws.
2. Cut out any visible insulation that may
obstruct airow.
3. Extend ex duct to attach air inlet tube.
4. Insert inner tab of inlet tube into mating
slot next to opening.
5. Place outer tab of inlet tube over mating
hole next to opening and secure with
screws removed from cover plate in
step 1.
6. Install outside air vent termination in a
location that will not be obstructed by
bushes, snow, etc. Locate vent near the
replace to make ex duct installation
easier.
CHIMNEY PIPE
The chimney system approved for this
replace consists of 12", 18", 24", 36" and
48" snap-lock, double-wall pipe segments,
planned for maximum adaptability to individual
site requirements. Actual lengths gained after
tting overlaps must be taken into consider-
ation (lineal gain) and are given in the lineal
gain chart (see Figure 8). Lineal Gain is the
actual measurable length of a part after two
or more parts are connected.
Figure 8 - Lineal Gain
Hemmed
End
8"
Stainless
Inner Pipe
12 3/8"
Galvanized
Outer Pipe

 DESCRIPTION GAIN
MHW36R Fireplace 42 "
12-8DM Pipe Section 10 5/8 "
18-8DM Pipe Section 16 5/8 "
24-8DM Pipe Section 23 5/8 "
36-8DM Pipe Section 34 5/8 "
48-8DM Pipe Section 46 5/8 "
RTL-8DM Round Termination 7 3/4 "
*
* The lineal gain for the terminations is mea-
sured to the ue gas outlet height.

SuperiorFireplaces.US.com 127312-01B8
There are three vent kits available which have
been specially designed for common installa-
tions in manufactured (mobile) homes: MW8K
(8' vent kit) and MW9K (9' vent kit). Contents
of these kits are listed under Accessories on
page 18. IMPORTANT: If height of chimney
assembly exceeds requirements for transpor-
tation of home, chimney installation may be
completed after home is sited.
Note: Termination must always be installed
after the home is sited.


Each double wall chimney section consists of
a galvanized outer pipe, a stainless steel inner
ue pipe and a wire spacer. Pipe sections must
be assembled independently as chimney is
installed. When connecting chimney directly
to replace, inner ue pipe section must be
installed rst with lanced side up. Outer pipe
section can then be installed over ue pipe
section with hemmed end up. Press down on
each pipe section until lances securely engage
hem on replace starter. The wire spacer will
assure proper spacing between inner and outer
pipe sections.

     
      
-

Continue to assemble chimney sections as
outlined above, making sure that both inner
and outer pipe sections are locked together.
When installing double wall snap-lock chimney
together, it is important to assure that the joint
between chimney sections is locked. Check by
pulling chimney upward after locking. Chimney
will not come apart if properly locked. It is not
necessary to add screws to keep chimney
together (exception, see Figure 14, page 11).

(FST-A)
Adjustable Firestop Thimble Assembly (FST-A)
is used to provide necessary air space and
clearance between chimney pipe and insula-
tion in attic space of a manufactured home.
To install thimble assembly, determine dis-
tance between ceiling joist and roof framing.
Attach adjustable thimble to restop spacer
so that assembly will cover distance. Adjust-
able thimble should be even with or above
rooine. Sheet metal screws or staples may
be used to attach thimble to restop spacer.
An opening large enough to allow insertion
of restop thimble assembly will be required
in ceiling. Attach restop/thimble assembly to
ceiling/ceiling joist using screws or staples as
shown in Figure 9. A minimum of 8 screws or
staples should be used.
Firestop thimble assembly should also be
used where there is a cathedral ceiling, in-
sulation barrier and roof, all in one assembly
in a manufactured home (see Figure 9). The
FST-A thimble can be used in any one of
three common ceiling pitches; at, 1.5"/12'
and 2.5"/12'.
An opening big enough to allow insertion of
restop thimble assembly will be required.
This opening depends on the pitch of your
ceiling. If your ceiling is a at or 1.5"/12'
pitch, you must use adapter plate provided to
seal unwanted openings. For 2.5"/12" pitch,
discard adaptor.
Thimble Extension
(If Needed)
Roof Line
Adjustable Thimble
Existing
Ceiling Frame
Firestop Spacer
Screws or Staples
(Min. of 8)
Figure 9 - Attaching Firestop/Thimble
Assembly to Ceiling
VENTING INSTALLATION
Continued

SuperiorFireplaces.US.com
127312-01B 9
VENTING INSTALLATION
Continued
If adapter is needed, secure it onto restop
using holes provided (see Figure 10). The
row of holes on sides of thimble is provided
to allow for pitch variances. Position restop
(top and bottom side) and thimble to desired
angle and secure with screws provided.
Insert thimble and firestop into prepared
opening and secure to ceiling by nailing
through firestop flanges. Thimble should
be even with or above roofline. Thimble
extensions are available (as an option) when
required. See Accessories on page 18.
Note: If there is a second story in the home,
restop spacer 3600FS-8DM will be required.
See Firestop Spacers, page 11.
PENETRATING ROOF
To maintain a 1" clearance to pipe on a roof
with a pitch, a rectangular opening must be
cut.
1. Determine center point through which pipe
will penetrate the roof.
2. Determine center point of the roof. Pitch
is the distance the roof drops over a given
span, usually 12". A 6/12 pitch means that
the roof drops 6" for each 12" measured
horizontally down from roof rafters.
3. Use roof opening chart (Figure 11) to
determine correct opening length and
ashing required.
4. Remove shingles around opening mea-
sured. Cut out this section.
5. Add next sections of pipe until end pen-
etrates roof line. Check to see that proper
clearances are maintained. Extend chim-
ney by adding sections of double wall
pipe until pipe is minimum of 30" above
highest point of roof cutout. Termination
and chimney must extend a minimum of
36" above highest point where it passes
through roof.
Thimble (Open End)
12"
Min.
Thimble
(Closed End)
Firestop
Adapter Plate (If Needed)
Insulation
Barrier
Screw Holes
Provided
for Thimble
Firestop
Figure 10 - Use a Firestop Thimble
Assembly for Cathedral Ceiling,
Insulation Barrier and Roof
1.5”/12’ Pitch
2.5”/12’ Pitch
12"
12”
1.5"
2.5"
Thimble
Adapter Plate
(For Flat and
1.5"/12' Pitch
Ceilings Only)
Firestop
Use for 1.5"/12'
Pitch Ceiling
Use for Flat
Pitch Ceiling
14
3
/
8
"
(36.5 cm)
30"
(76.2 cm)
1"
(2.5
cm)
1"
(2.5
cm)
Minimum Measurements
1"
(2.5 cm)
Opening "A"
PITCH 
OPENING



Flat 0° 15" 6F-8
0-6/12 26.6° 16 1/8 " 6F-8
6/12 -
12/12 45° 20 3/8" 12F-8
Figure 11 - Determine Roof Opening

SuperiorFireplaces.US.com 127312-01B10
VENTING INSTALLATION
Continued
OFFSET RISE 
A     
4 3/8"16 3/8" ELBOW SET ONLY
9 3/4"25 1/2"1
12 3/4"30 3/4"1
15" 34 3/4"1
18" 40" 1 1
21 1/4" 46 1/4"1
23 3/4" 49 1/4"1 1
27 3/4"56 3/4"1
30" 60 3/4"1 1
33" 66" 1 1
36" 71" 1 1
38 1/4" 75" 2
41 1/4"80 1/4"1 1 1
45" 86 3/4"2
46 3/4" 89 1/2"1 1 1
51" 97" 1 1
53 1/4" 101" 1 2
56 1/4"106 1/4"2
59 1/4"111 1/2"1 1 1
61 3/4"115 1/2"1 2
64 3/4"120 3/4"1 2
68 1/4" 127" 2 1
70" 130" 1 1 2
74 1/4"137 1/2"1 2 1
76 3/4" 141 1/2"1 2 1
79 3/4" 146 3/4" 4

1. To achieve desired offset, you may install
combinations of 12", 18", 24", 36" and 48"
length of double wall pipe (see offset chart
and Figure 12).
OFFSET CHART (22-50 FT. SYSTEM HEIGHT)
Figure 13 - Ceiling Support Pipe
12S-8DM
Straps
Straps
Straps
Straps
Detail A
Return Elbow
Detail B
Angle Firestop
See
Detail A
See Detail B
Figure 12 - Elbow Offset
B
A
Screws
2. Chimney weight above offset rests on
return elbow. Straps must be securely
nailed to rafters or joists (see Figure 13,
details A and B).
3. Maximum length of pipe between supports
(return elbow or 12S-8DM) is 6' of angle
run. Maximum of two 6' angle run sections
per chimney system (see Figure 12).
4. All pipe connections between offset and
return must be secured with two screws
on outer pipe only (see Figure 14). Do not
penetrate inner stainless.