Grand River Kiva Technical manual

Information Guide
www.GrandRiverSupply.com
Copyright © 2006 All Rights Reserved
1421 Camino Del Pueblo
Bernalillo, NM 87004

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Copyright © 2006 Grand River Supply • 1421 Camino Del Pueblo • Bernalillo, NM 87004 • Phone [phone]
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TABLE OF CONTENTS
OVERVIEW......................................1
1. Firebox Assembly .........................................1
2. Chimney system ..........................................1
3. Air intAke system .........................................2
4. GAs Assembly (optionAl) ....................................3
5. FACe FrAme .............................................3
6. Finish .................................................3
KIVA FIREPLACE COMPONENTS. . . . . . . . . . . . . . . . . . . . . . 4
1. Firebox Assembly Components ................................4
2. Chimney system Components .................................5
3. Air intAke system Components ................................5
4. GAs system Components (optionAl).............................6
5. FACe FrAme Components ....................................6
6. Finish Components ........................................6
7. optionAl ACCessories ......................................7
INSTALLATION CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 8
1. loCAtion ...............................................8
2. Chimney ChAse ..........................................9
3. Air intAke system ........................................10
INSTALLATION..................................11
1. Air intAke system ........................................11
2. Floor prepArAtion .......................................11
3. Firebox instAllAtion .....................................12
4. GAs line (optionAl).......................................15
5. Chimney system instAllAtion ................................16
6. FACe FrAme instAllAtion ...................................18
7. Finish ................................................19

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The Kiva Fireplace Kit has been exTensively TesTed. asaparT of This TesTing an official
“installation instructions and operations” manual has been wriTTen. This manual should
be used during acTual insTallaTion. The inTenTion of This “Kiva Fireplace Kit inFormation
Guide” is To help develop an overall undersTanding of whaT The Kiva Fireplace Kit is, and
whaT is required To insTall iT.
please keep in mind ThaT This fireplace should be insTalled only by aconsTrucTion
indusTry licensed conTracTor, or acerTified insTaller. local codes should be checked and
any permiTs or inspecTions should be obTained before insTallaTion.
Important note
To be used as a supplement to original manufactures manual only. NOT intended
to replace original manufactory installation/owners manual. Refer to original
owner’s manual for specic clearances, operating instructions and additional
safety information.

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OVERVIEW
the SIx major Component SeCtIonS of the KIva fIreplaCe KIt are:
Firebox Assembly
Chimney System
Air Intake System
Gas Assembly (optional)
Face Frame
Finish
1. fIrebox aSSembly
The Firebox Assembly consists of three Firebox Sections. During
installation, these Firebox Sections are stacked to form a traditional
looking masonry rebox. The entire Firebox Assembly weighs less than
600 pounds and two people can lift each section. Special structural
support is not required because of its minimal weight.
2. ChImney SyStem
The function of the Chimney System is to evacuate smoke from the Firebox
Assembly to the outside. The Chimney System consists of two main
elements, the Chimney Chase and the Double Wall Chimney Pipe. The
Chimney Chase is the passage that conceals the Double Wall Chimney
Pipe. It is important that the Double Wall Chimney Pipe maintain a space
at least 2” from any combustible material.
1.
2.
3.
4.
5.
6.

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3. aIr IntaKe SyStem
The major component of the Air Intake System is the Wall
Vent. It looks much like a common dryer vent, only larger.
The Air Intake System delivers outside air to support
three important functions.
The Air Intake System delivers cool outside air to the
outer chamber of the Double Wall Chimney Pipe to
cool the outer wall and reduce re hazard.
The Air Intake System provides cool air to circulate
and cool the space around the Firebox Assembly
behind the Face Frame.
The Wall Vent also supplies outside air to the
Combustion Air Tube, which is built into the Firebox
Base. The outside air enters the rebox area and
supports combustion instead of using the warm air from
the room, which greatly increases the efciency of the
replace.
1.
2.
3.

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4. GaS aSSembly (optIonal)
In addition to wood log burning, the Kiva Fireplace Kit has been tested
and approved for use with an optional natural gas or propane vented
Gas Logs Set or a Log Lighter available from Grand River Supply. If
the intended installation includes one of these gas devices, it will be
necessary to have a gas line brought into the rebox. This gas line can
easily be installed after the Firebox Assembly is in place but
before the Face Frame is xed into place.
5. faCe frame
The 10’ tall Face Frame is pre-fabricated of ½” tubular steel with ¼” Metal
Diamond Mesh attached. You can customize your installation with optional
Nichos and Bancos available from Grand River Supply. During installation
the Face Frame assembly will be attached to the Firebox . The Face Frame,
available in four styles, is what gives the Kiva Fireplace its unique look.
6. fInISh
A three-coat plaster process is the most popular nish applied to the
Fireplace.

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KIVA FIREPLACE COMPONENTS
All necessary components you will need to install your Kiva Fireplace Kit are shown below.
1. fIrebox aSSembly ComponentS
Damper
Firebox Top
Firebox Middle
Firebox Base
Concrete Blocks
Flue Goo
Damper. The Damper is made of steel and mounts to the top of the assembled Firebox Sections. To open
or close the Damper one simply reaches up into the rebox and pulls a lever. When using a Gas Log Set the
replace Damper must be permanently removed or locked in the open position. For the installation of the Gas
Log Set follow the installation manual provided by the manufacturer.

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FMI Round Top Storm CollarRoof FlashingFirestop Spacer
FMI Chimney Starter Collar FMI 30 Degree Elbow FMI Chimney Double Wall Pipe
2. ChImney SyStem ComponentS
Important: reaD thIS!
The Chimney Starter Collar is the rst section of Double Wall Chimney Pipe and mounts directly onto the top
of the Firebox Assembly. Each manufacturer of Double Wall Chimney Pipe has their own design and parts from
one manufacturer will not work with parts from another. There are three Chimney Starter Collars to t Double
Wall Chimney Pipe from three different manufacturers. The manufacturers are, FMI, Superior, and Heatilator
Series 300. A Chimney Starter Collar to match the manufacturer of Double Wall Chimney Pipe that will be
used for the installation must be specied when ordering a Kiva Fireplace Kit. The default manufacturer is
FMI.
3. aIr IntaKe SyStem ComponentS
Wall Vent Flex Aluminum Duct

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4. GaS SyStem ComponentS (optIonal)
Gas Wall Valve Gas Log KitPropane Adapter Kit
Gas Log Kit: As well as wood burning, the Kiva Fireplace Kit has been approved for use with a vented Gas
Log Kit. The Gas Log Kit should incorporate an automatic shutoff device and comply with the Standard
for Decorative Gas Appliances for Installation in Vented Fireplaces, ANSI Z21.60 and must be installed in
accordance with the National Fuel Gas Code. The Gas Log Kit sold by Grand River Supply is pre-approved. The
replace has not been tested with an un-vented gas log set. To reduce risk of re or injury, do not install an
un-vented gas log set into replace.
5. faCe frame ComponentS
Face Frame
Door FrameMetal Diamond Mesh
6. fInISh ComponentS
Stucco Mix

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7. optIonal aCCeSSorIeS
Glass Door
(NOT FOR USE WITH
WOOD BURNING FIREPLACE)
Screen Grate

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1. loCatIon
To determine the safest and most efcient location for your
replace, the following guidelines should be taken into
consideration.
Make sure the replace will t. The size of your Kiva
Fireplace will vary with each model Face Frame. Please
refer to Chart A - Wall Clearance Requirements and
gure 1 - Wall Clearance.
The location of your Kiva Fireplace should not interfere
with air conditioning ducts, windows or doors, or be
affected by drafts,.
If possible, choose a location where the cutting of joists
or roof rafters can be avoided.
Consider a location where the Air Intake System Wall Vent
can be easily installed.
1.
2.
3.
4.
INSTALLATION CONSIDERATIONS
Chart a - Wall ClearanCe requIrementS
Frame Style: Laguna Sandia Hopi Shalako
1 - Ceiling Radius Line 24” 24” 24” 24”
2 - Face Frame Clearance 36” 42” 42” 48”
3 - Floor Clearance Radius 54” 60” 60” 66”
4 - Banco Height 18” 18” 18” 18”
Figure 1 - Wall Clearance

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2. ChImney ChaSe
The Chimney Chase is the area made available in the building
framing for the Double Wall Chimney Pipe to go out through
the roof. The views in the illustrations used here are looking
up at the ceiling in the corner where the Kiva Fireplace Kit will
be installed.
The minimum dimensions of the Chimney Chase is
determined by the method of Air Intake System venting used,
Outside Wall Venting or Chimney Chase Venting.
Outside Wall Venting will require that the inside of the
Chimney Chase measure a minimum of 17” x 17”, as shown
in gure 2 - Chimney Chase without Vent. Air Intake System
venting details will be discussed later.
Chimney Chase Venting will require that the inside of the
Chimney Chase measure a minimum of 17” x 24”. The longer
dimension provides space for the Air Intake System as shown
in gure 3 - Chimney Chase Venting.
Fire blocking is required between joists in which the Double
Wall Chimney Pipe will be installed as shown in gure 4 - Roof
Joist Fire Blocking. Be sure to adhere to your local building
codes.
A hole with a 17” minimum diameter should be cut into
plywood or other appropriate material that is a minimum of
½” thick and used to cap the Chimney Chase as shown in
gure 5 - Chimney Chase Cap.
Remember, there can be no combustible material within
2” of the Double Wall Chimney Pipe.
Figure 3 - Chimney Chase Venting
Figure 2 - Chimney Chase without Vent
NOTE: If an obstruction is encountered within the space required
for the Chimney Chase it must be removed or cut as your local
building code allows. Do Not simply cut oor and ceiling joists,
they are almost always structural, as are roof rafters and trusses.
Check before cutting!
Figure 4 - Roof Joist Fire Blocking
Figure 5 - Chimney Chase Cap

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3. aIr IntaKe SyStem
There are many possible ways to accomplish the delivery of
outside air to the rebox space and combustion area. Like
the Chimney Chase, you should plan ahead for the Air Intake
System installation.
Three common methods of installation include: Outside Wall
Venting, Chimney Chase Venting and Roof Venting.
Outside Wall Venting is used when the replace is being
installed on an outside wall as shown in gure 6 - Outside
Wall Venting. It does not matter weather it is the wall on
the right or the wall on the left, each will work equally
well. The Wall Vent should be placed at least 12” above
the oor on the available exterior wall. The Wall Vent must
be placed within the Firebox Assembly area behind the
Face Frame. Cut out a 6” diameter circle on the wall and
insert the vent. Secure the outside of the vent to the wall
using (4) #8 x 1-1/2” hex head self-drilling screws.
Chimney Chase Venting is used when an exterior wall
is not available as shown in gure 7 - Chimney Chase
Venting. In this conguration the Wall Vent is installed
into the Chimney Chase and a 6” Flex Aluminum Duct will
run down the inside of the Chimney Chase to the rebox
area. Draw a 6” diameter circle on the chase, cut out the
circle, and insert the Wall Vent. Secure the outside of
the vent to the wall using (4) #8 x 1-1/2” hex head self-
drilling screws. Inside the Chimney Chase attach the 6”
Flex Aluminum Duct to the Wall Vent sleeve, secure with
screws, and stretch the Flex Aluminum Duct along the
corner of the Chimney Chase to about 12” above the oor
behind the rebox.
Roof Venting can be used in nearly any installation. A
6” hole is cut through the roof surface near the Chimney
location. A short length of 6” single wall pipe is installed
with roof ashing and a cap to protect against rain and
snow. Attach the 6” Flex Aluminum Duct to the Wall Vent
sleeve, secure with screws, and stretch the Flex Aluminum
Duct along the corner of the Chimney Chase to about 12”
above the oor near the base of the rebox. A typical roof
vent installation is shown in gure 8 - Pitched Roof Vent.
1.
2.
3.
Figure 6 - Outside Wall Venting
Figure 8 - Pitched Roof Vent
Figure 7 - Chimney Chase Venting

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1. aIr IntaKe SyStem
Install as discussed earlier.
2. floor preparatIon
The rebox must be placed on a level non-combustible
surface. In general a minimum of 18” clearance from the
rebox opening to any combustible material is required.
Wherever carpeting and padding is present it should be
removed to the Banco Radius as shown in gure 9 - Cut Away
Carpet. If this surface is wood, vinyl or any other combustible
material it will need to be protected with
Masonry Board.
maSonry boarD
The Masonry Board should be placed on the oor prior to any
layout or installation and will need to cover the entire oor
area under the Firebox Assembly and Face Frame. Place the
Masonry Board in the corner and mark a line. The radius of
this line depends on the model of replace being installed. In
order to determine which layout dimensions to use refer to
Chart B - Kiva Fireplace Layout Dimensions (on next page)
and use the column, based on the model of replace being
installed, and row “Banco Radius”.With the pivot point in the
corner draw the Banco Line on the Masonry Board as shown
in gure 10 - Masonry Board Layout.
After cutting the Masonry Board to size, fasten it in place as
shown in gure 10 - Masonry Board Installation.
Figure 9 - Cut Away Carpet
INSTALLATION
Figure 10 - Masonry Board Layout
Figure 10 - Masonry Board Installation
TIP: To cut the Masonry Board, score along the cut line with a
sharp utility or carbide scoring knife. The cement is tough, so you
will have to score it a few times. Once it is well scored, use your
knee to snap the board in two, just like you do a piece of drywall,
and then cut the nylon mesh along the back seam.
TIP: To draw a large radius, use a piece of string attached to a
nail in the corner as a compass. At the desired radius distance tie
a pencil as shown in Figure 9. As long as you keep tension on the
string as you draw, you will have a perfect arc with the correct
radius to cut your Masonry board.

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3. fIrebox InStallatIon
layout
The Layout and positioning of your Kiva Fireplace is important
to insure proper alignment of all components. Be sure to
double check your measurements and all dimensions.
Measure out from the corner where the replace is to be
installed 22” along the wall. Use a framing square to mark a
line coming out from the wall. Repeat the same procedure for
the other wall as shown in gure 11 - Center Line Cross.
Draw a line out from the corner through the intersection
where the two previous lines cross. This is the Base Center
Line as shown in gure 12 - Base Center Line.
The Base Front Line is the most important line to be drawn
here. It will be used to locate the front of the Firebox Base.
Mark a point on the Base Center Line out from the corner.
The distance out from the corner depends on the model of
replace being installed. In order to determine which layout
dimensions to use refer to Chart B - Kiva Fireplace Layout
Dimensions and use the Column based on the model of
replace being installed and Base Front. Then with a framing
square draw a perpendicular line about 1 foot long out to the
right of the Base Center Line. Flip the framing square over
and draw another perpendicular line about 1 foot long out to
the left of the Base Center Line as shown in gure 13 - Base
Front Line.
Chart b - KIva fIreplaCe layout DImenSIonS
Fireplace Model Laguna Sandia Hopi Shalako
Face Frame Radius 36” 42” 42” 48”
Banco Height 18” 18” 18” 18”
Banco Radius 54” 60” 60” 66”
Base Front 32” 35” 35” 35”
Note: This Dimensions Table will be referred to several times
during layout and installation.
Figure 12 - Base Center Line
Figure 11 - Center Line Cross
Figure 13 - Base Front Line

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baSe ColumnS
The Firebox Assembly will set on top of two concrete block
columns. One 8” x 8” x 16” and one 4” x 8” x 16” concrete
block is used to form each column. These columns are set 3”
to the right and 3” to the left of the Base Center Line, with
the front face of the block on the Base Front Line as shown in
gure 14 - Base Column Flue Goo. Use a small amount of the
Flue Goo that was included in your Kiva Fireplace Kit on the
oor and between the concrete block. Care should be taken
that these blocks are plumb, level, and the same height as
shown in gure 15 - Base Column Installation. Make sure they
are exactly aligned to and on the Base Front Line. This is an
important step because the top edge of the concrete block
columns will be used to locate the Firebox Base that will be
placed on top of them.
fIrebox baSe
Measure across the front of the Firebox Base and mark a
Front Center Line at its center as shown in gure 16 - Firebox
Base.
Spread a thin coat of Flue Goo on top of the Base Columns.
Set the Firebox Base section on the Base Columns and align
and center the front edge of the Firebox Base with the front
edge and center of the Base Columns. Check to see that the
clearance between the sides and back edge of the Firebox
Base and the walls are a minimum of 2” and that the Firebox
Base is level.
fIrebox mIDDle
Temporarily place the Firebox Middle on top of the Firebox
Base. Draw a Firebox Curve Line on the Firebox Base using
the interior bottom edge of the Firebox Middle as shown in
gure 17 - Firebox Middle.
Remove the Firebox Middle section and spread a thin coat
of Flue Goo on the Firebox Base staying about 1” behind the
Firebox Curve Line as shown in gure 17 - Firebox Middle.
Reset the Firebox Middle, press into position, and align
with the back and sides of the Firebox Base.
Figure 15 - Base Column Installation
Figure 14 - Base Column Flue Goo
Figure 16 - Firebox Base
NOTE: Use caution to insure proper positioning when installing the
Base Column, because the top edge of the concrete block columns
will be used to locate the Firebox Base that will be placed on top of
them.
Figure 17 - Firebox Middle

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fIrebox top
Spread a thin coat of Flue Goo on the top of the Firebox
Middle. Place the Firebox Top onto the Firebox Middle, press
into position, and align with the back and sides of the Firebox
Middle as shown in gure 18 - Firebox Top.
Spread a thin coat of Flue Goo on the outside edge, or seam,
to seal the Firebox Base, Firebox Middle and Firebox Top
together where they connect as shown in gure 19 - Seal
Firebox Seams.
Damper
Center the Damper over the opening on the Firebox Top with
the damper handle extending down through the opening
and the loop in the Damper handle facing forward. Use a ¼”
masonry bit to drill four holes into the concrete of the Firebox
Top using the four holes in the Damper plate as a guide (see
gure 20 - Damper Installation). After drilling the holes remove
the Damper and clear away any dust and debris from the
drilling. Apply Flue Goo between the Damper and the Firebox
Top and bolt the Damper to the Firebox Top using the
provided ¼” diameter by 1 ½” long lag bolts.
Figure 18 - Firebox Top
Figure 20 - Damper Installation
Figure 19 - Seal Firebox Seams
NOTE: If you do not have enough Flue Goo to seal the seams, you
can use cement mortar instead.

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4. GaS lIne (optIonal)
If the immediate, or possible future, use of the replace
includes a Gas Log Kit or a Log Lighter, a gas line must be
run into the rebox. Under normal circumstances the Firebox
Assembly will be in place and the gas line will be run into the
back center of the Firebox Middle section one brick up from
the base. Drill a hole from the inside of the rebox out using
a masonry bit. Stub the gas line into the rebox enough to
accommodate a cap and carefully patch the hole with Flue
Goo as shown in gure 21 - Firebox Gas Line. CONSULT
LOCAL BUILDING CODES for gas line installation.
As well as other factors, the size of the gas line depends on
the length of the run and the BTU’s of the gas device being
installed. The Grand River Supply Gas Log Kit runs in the
50K BTU range. Generally, the gas line that is actually stubbed
into the rebox will be ½” but it is quite possible that a ¾” or
more line will be necessary leading up to the stub-in. The gas
line may be run many different ways, horizontally as well as
vertically.
A Gas Wall Valve may be required, and is normally installed
on the wall 24” above the oor as shown in gure 21 - Firebox
Gas Line. The distance out from the corner depends on the
Kiva Fireplace Kit model. Refer to the “Distance from Corner”
column of Chart C - Gas Wall Valve Table as shown in gure
22 - Gas Wall Valve Position. This exact location is not critical
but the Gas Wall Valve should be visible and allow the gas to
be conveniently shut off when not in use.
Figure 21 - Firebox Gas Line
NOTE: You should have a licensed gas installer bring the gas line
into your rebox and follow all local building codes.
Chart C - GaS Wall valve poSItIon
Model Distance from Corner
Laguna 45”
Sandia 51”
Hopi 51”
Shalako 57”
Figure 22 - Gas Wall Valve Position

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5. ChImney SyStem InStallatIon
All Chimney System components must be approved for use
with the Kiva Fireplace Kit and installed according to the
manufacturer’s specications, using all necessary parts
required by the manufacturer to complete the chimney run. All
chimney components must come from one manufacturer, they
are not interchangeable. When the Double Wall Chimney Pipe
is ordered with the Kiva Fireplace Kit directly from Grand River
Supply, it will be manufactured by FMI.
fIreStop SpaCer
A Firestop Spacer is required at each point where the chimney
penetrates a oor or ceiling joist space. Its purpose is to
establish and maintain the required clearance between the
Double Wall Chimney Pipe and combustible materials, and
provide separation from one oor space to another.
When the Double Wall Chimney Pipe passes through a framed
opening into an attic space, the Firestop Spacer must be
placed into the attic oor as shown in gure 23 - Attic Firestop
Spacer.
When the pipe passes through a framed opening into a living
space above, the Firestop Spacer must be placed onto the
ceiling from below as shown in gure 24 - Ceiling Firestop
Spacer.
Double Wall ChImney pIpe aSSembly
Each Double Wall Chimney Pipe section consists of a
Galvanized Outer Pipe and a Stainless Steel Inner Pipe. Each
section is assembled as the chimney is installed.
The Stainless Steel Inner Pipe must be installed rst with
the punched end up. The Galvanized Outer Pipe section can
then be installed over the Stainless Steel Inner Pipe with the
Punched end down.
Place the Starter Collar on the Damper as shown in gure 25
- Starter Collar on Damper.
Figure 24 - Ceiling Firestop Spacer
Figure 23 - Attic Firestop Spacer
Figure 25 - Starter Collar on Damper
NOTE: Do not attach the Starter Collar until after you have
installed the 30º Offset to make sure it is properly positioned.

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The next step involves the 30 Degree Elbow. The 30 Degree
Elbow actually consists of two parts, the 30 Degree Offset and
the 30 Degree Return.
The 30 Degree Offset attaches to the Starter Collar and begins
the Offset Pipe Run. The 30 Degree Return ends the Offset Pipe
Run and begins the Vertical Chimney Pipe Run.
The 30 Degree Return is easily identiable because it has four
long straps attached to it. These straps will be attached to
the walls, rafters, joists or studs, and will support the weight
of the Vertical Chimney Pipe Run as shown in gure 26 - 30
Degree Elbow.
Place the Stainless Steel Inner Pipe section of the 30 Degree
Offset punched end up into the Damper and slide it down
until the hem seats. The Galvanized Outer Pipe section can
now be installed. Press down on the outer section until it
securely engages and snaps into the Starter Collar. The
integrated wire spacer will assure the proper spacing.
Between the Stainless Steel Inner Pipe section and the
Galvanized Outer Pipe section. Secure the Starter Collar to
the Damper plate with the provided self-tapping screws. It will
be easier if the Damper plate is pre-drilled.
A typical Offset Pipe Run will require the use of a 30 Degree
Offset, one 18” Double Wall Chimney Pipe section and a 30
Degree Return as shown in gure 26 - 30 Degree Elbow. When
completed the vertical end of the 30 Degree Return must align
with the Firestop Spacer above.
Nail or screw the straps of the 30 Degree Return to the walls,
rafters, joists or studs as shown in gure 27 - 30 Degree
Return Straps. This will hold it securely in place and enable it
to bear the weight of the Vertical Chimney Pipe Run.
Continue installing the Double Wall Chimney Pipe sections
necessary to reach the required height of the Vertical
Chimney Pipe Run. Each section should be locked together
individually by rst connecting the Stainless Steel Inner Pipe
and then the Galvanized Outer Pipe. Securing the chimney
sections together with screws is not necessary. Once the
Vertical Chimney Pipe Run is completed and in position, it
is important to ensure the connections between the chimney
sections are locked and that the 2” clearance to combustibles
is maintained.
Figure 27 - 30 Degree Return Straps
Figure 26 - 30 Degree Elbow