Heatmor 100 CSS User manual

General CSS
SAVE THESE INSTRUCTIONS
Manuel en Français disponible en ligne:
www.HEATMOR.com

2Rev. 05/2020
When these safety symbols appear on the following pages, they will
alert you to the possibility of serious injury if you do not comply with the
corresponding instructions. The hazard may originate from something
mechanical or electrical shock. Please read the instructions carefully.
When you see this safety symbol on the following pages, it will alert you
to the possibility of damage to your HEATMORTM Stainless Steel Outdoor
Furnace if you do not comply with the corresponding instructions. Please
read the instructions carefully.
The HEATMORTM Stainless Steel Outdoor Furnace is certied to o󰀨er safe
service provided it is installed, operated and maintained in accordance with
the instructions contained in this manual.
Proper personal protective equipment, (PPE), MUST BE WORN AT ALL
TIMES when servicing and maintaining any of the HEATMORTM Stainless
Steel Outdoor Furnace product line.

3Rev. 05/2020
TABLE OF CONTENTS Page #
NOTICE TO THE READER 6
CERTIFICATE OF COMPLIANCE 7
1 HEATMOR™ STAINLESS STEEL FURNACE MODELS 8
2 FURNACE SPECIFICATIONS 9
3 FRONT CUT AWAY VIEW OF HEATMOR™ 10
A Furnace Parts List
4 REAR CUT AWAY VIEW OF HEATMOR™ 12
A Furnace Parts List
5 MINIMUM CLEARANCE SEPARATION SPECIFICATIONS 14
6 WARNINGS AND PRECAUTIONS 15
A Installation
B Electrical
C Other
7 CONCRETE PAD SPECIFICATIONS 17
A Model 100 Pad Specifications
B Model 200 Pad Specifications
C Model 400 Pad Specifications
8 INSTALLATION OF THE HEATMOR™ FURNACE 20
A Equipment Required
B Placing the HEATMOR™ on the Concrete Base
C Filling the HEATMOR™ Outdoor Furnace Initially with Water
D Maintaining Heat Transfer Fluid (HTF) in the Bladder and HEATMOR™
E Low Heat Transfer Fluid (HTF) Condition
F Initial Installation of Sand
9 SAFE OPERATING GUIDELINES 24
A Operation
B Lighting the HEATMOR™ for the First Time
C Dew Point
D Loading Wood into the HEATMOR™
E What should I burn?
F Types of Wood
G Wood as a Fuel
H Stages of Combustion
I Efficiency Measurements and Types of Fires
J Loading of the Furnace
K Handling and Storage of Wood
L Types of Coal
M Coal as a Fuel
N Handling and Storage of Coal
O Loading Coal into the HEATMOR™

4Rev. 05/2020
10 HEAT TRANSFER FLUID (HTF) 33
A Qualitie of Water to Use
B Heat Transfer Fluid (HTF) Level Maintenance
C Removal/Replacement of System Heat Transfer Fluid
D Freeze Protection
E Adding Freeze Protection Products
11 BLADDER ASSEMBLY 35
A Bladder
B Removal and Replacement of the Bladder
C Bladder Ball Valve and Bladder Hose
D Heat Transfer Fluid (HTF) Level Gauge
E Fluid Level Sensor
F Bladder Cover Plate
12 WATER JACKET 38
A Supply Line and Return Line Threaded Connectors
B Relief Vent Pipe with Elbow
13 FIREBOX AND OTHER COMPONENTS 39
A Firebox
B Firebox Door
C Firebox Door Hoses and Elbows
D Firebox Door Handle
E Firebox Door Hinge
F Firebox Door Latch
G Firebox Door Magnet
H Firebox Door Gasket
I Firebox Door Frame
J Firebox / Base Connector Clamps
K Firebrick
L Standard Grates
M Optional Shaker Grates
N Sand
O Flash Curtain / Heat Shield
14 AIR SUPPLY 50
A Combustion Air Blower and Flipper Assembly
B Air Box(s)
C Combustion Air Tube
D Automatic Fan Switch (A.F.S.)

5Rev. 05/2020
15 CHIMNEY AND FLUE 53
A Chimney
B Chimney Extension(s)
C Rain Caps and Spark Arrestor
D Creosote
E Flue
F Flue Cover
G Flue Scraper
16 ASHES 55
A Ash Management and Ash Removal
B Ash Pan
C Ash Auger
D Ash Auger Tube
E Ash Auger Tube Cover Plate
17 ELECTRONIC AQUASTAT CONTROLLER 58
18 ELECTRICAL 59
A Electrical Supply
B Electrical Supply Junction Box
C Double Electrical Outlets at Rear
D
High Temperature Safety Shutoff
E Front Light and Fan Power Switch
F In the Event of a Power Failure
19 EXTERIOR CLADDING AND INSULATION 62
A Outer Front Door of HEATMOR™
B Roof of the HEATMOR™
C Sides of the HEATMOR™
D Insulation
20 CHECKING FOR AIR LEAKS 64
21 HEAT TRANSFER FLUID (HTF) LEAKS 65
22 DOMESTIC COIL 66
23 MAINTENANCE CHECKLIST 67
A Season Start-Up
B End of Season
24 FREQUENTLY ASKED QUESTIONS 69
25 TROUBLESHOOTING AND SOLUTIONS 71
HEATMOR™ STAINLESS STEEL LIMITED WARRANTY 79
HOW TO MAINTAIN YOUR WARRANTY 80
HEATMOR REFERRAL 81
NOTES

6Rev. 05/2020
NOTICE TO THE READER
HEATMOR™ warrants and guarantees ALL HEATMOR™ Stainless Steel Outdoor Furnace
Models. HEATMOR™ does not warrant or guarantee any of the supporting products
described within this Operations and Maintenance Manual.
The contents, descriptions, directions, diagrams, and recommendations within this material
are for the sole purpose of suggested operation and maintenance methods.
Furthermore, HEATMOR™ shall not be liable for any special, consequential, or exemplary
damages, resulting, in whole or part, from the readers’ neglectful use, based upon
the material within this Operations and Maintenance Manual. Adhere to and follow all
maintenance procedures set forth in this manual.
The methods of operation described within this Operations and Maintenance Manual
have proven to be e󰀨ective for HEATMOR™ for the sole purpose of the operation of a
HEATMOR™ Stainless Steel Outdoor Furnace.
All formulas and gures listed within this Operations and Maintenance Manual are
approximated and should be read as such.
For additional copies or information, contact
HEATMOR™
105 Industrial Park Court NE,
P.O. Box 787,
Warroad, MN 56763 USA
Phone: [phone]
Fax: [phone]
Website: www.heatmor.com
E-mail: [e-mail]
Copyright © 2013- HEATMOR™
All rights reserved. No part of this Operations and Maintenance Manual may be reproduced
or used in any form or by any means - graphic, electronic or mechanical, including
photocopying, recording, taping, or information storage and retrieval systems - without the
written permission of HEATMOR™.
MODELS (100 CSS, 200 CSS, 400 CSS)
Supplemental literature will be provided in addition to this manual for Models 200 OB and
400 OB.

7Rev. 05/2020
Units are Safety Listed by Omni Test Laboratories
Report # 275-O-11-4 and # 275-O-12-4
Listed to UL2523-2009 and CSA B366.1-11

8Rev. 05/2020
CHAPTER 1
HEATMOR™ STAINLESS STEEL OUTDOOR FURNACE MODELS
Model 100 CSS Model 200 CSS
Model 400 CSS

9Rev. 05/2020
CHAPTER 2
RESIDENTIAL FURNACE SPECIFICATIONS
Specications Model 100 CSS Model 200 CSS Model 400 CSS
Overall Width (Inches)
Base Width (Inches) (Footprint)
50
46.5
50
46.5
50
46.5
Overall Height (Inches)
(With chimney stub) 82.5 82.5 82.5
Overall Length (Inches)
Base Length (Inches) (Footprint)
65
53.75
77
65.75
95
83.75
Total Weight (lbs., without HTF) 1375 1599 1968
HTF Capacity (U.S. gallons) 90 123 172
Forced Draft (C.F.M.) 75 150 2 x 150 = 300
Chimney Size (Inches) 8 8 8
Insulated Heating Area (Sq. Ft.)*
1 Loading/day
2 Loading/day
1500
3000
2500
5000
5000
10,000
Firebox Width (Inches) 28 28 28
Firebox Length (Inches) 24 36 54
Firebox Height (Inches) 36 36 36
Volume of Firebox (Cu. Ft.) 14 21 32
Firebox Door Size (Inches) (W x H) 20 x 18 20 x 18 20 x 18
Flue Transfer Area (Sq. Ft.) 6.5 10 15
BTU’s (maximum)** 100,000 200,000 400,000
Water Jacket Steel
Gauge
409 Stainless
10
409 Stainless
10
409 Stainless
10
Firebox Steel
Gauge
409 Stainless
10
409 Stainless
10
409 Stainless
10
Base Steel
Gauge
409 Stainless
14
409 Stainless
14
409 Stainless
14
Base of Unit to
Bottom of Loading Door (Inches) 24 24 24
Warranty - Workmanship Limited Lifetime Limited Lifetime Limited Lifetime
Warranty - Corrosion Limited Lifetime Limited Lifetime Limited Lifetime
Approvals Test Standards
UL 2523-2009 CSA-B366.1-11 UL 2523-2009 CSA-B366.1-11 UL 2523-2009 CSA-B366.1-11
Hook-ups Back Back Back
Total Heat Extraction Area (Sq. Ft.) 30.89 40.89 55.89
Type of Fuel Wood/Coal Wood/Coal Wood/Coal
Electrical Supply 115 V, 60HZ, 1 Phase 115 V, 60HZ, 1 Phase 115 V, 60HZ, 1 Phase
* This is an estimate only. Actual loadings per day may vary depending on structures heated and type of fuel used.
** This value should only be used as an indication of the furnace’s heat recovery ability. Sustained outputs at this rate will
increase the loadings per day. Some types of fuel may prevent the furnace from reaching this maximum output.

10 Rev. 05/2020
CHAPTER 3
FRONT CUT-AWAY VIEW OF HEATMOR™ OUTDOOR FURNACE
(For parts not shown on the cut-away view, please refer to the appropriate chapter for further details.)

11 Rev. 05/2020
FURNACE PARTS LIST
Firebox
1) Firebox
2) Firebox door
3) Firebox door hoses and elbows
4) Firebox door handle
5) Firebox door hinge
6) Firebox door latch
7) Firebox door handle holder (not shown)
8) Firebox door gasket
9) Firebox door frame
10) Firebox / base connector clamps
11) Firebrick
12) Standard grates
13) Optional shaker grates (not shown)
14) Sand (not shown)
15) Flash curtain / heat shield (next page)
Water jacket
16) Water jacket (surrounds rebox)
18) Supply / Return Valve (next page)
19) Return line threaded connector (next page)
20) Relief vent pipe
Air supply
22) Combustion air blower (400 CB - 2 Fans)
23) Flipper assembly
24) Air box(s)(next page)
25) Combustion air percentage tube (next page)
26) Automatic Fan Switch (A.F.S.)
Chimney and top flue
27) Chimney Stub
28) Chimney extension(s) (not shown)
29) Flue (next page)
30) Flue cover plate (next page)
31) Flue scraper (not shown)
Ashes
32) Ash pan
33) Ash auger (not shown)
34) Ash auger tube
35) Ash auger tube cover plate
Bladder assembly
36) Bladder
37) Bladder gate valve and hose
38) Fluid level gauge
39) Bladder inspection cover plate
Electrical
41) Electrical supply junction box
42) Electrical plug outlets
43) High Temperature Safety Shuto󰀨
44) Electronic Auquastat Controller
45) Front light and combustion air
blower control switch
Housing
46) Outer front door (not shown)
47) Outer rear door (not shown)
48) Roof
49) Sides (not shown)
50) Insulation (not shown)
Optional hot water internal coil
51) Internal coil (not shown)
Lift hook
52) Lift ring
53) Light Globe, Keys, Manual

12 Rev. 05/2020
CHAPTER 4
REAR CUT-AWAY VIEW OF HEATMOR™ OUTDOOR FURNACE
(For parts not shown on the cut-away view, please refer to the appropriate chapter for further details.)
30
35
18
19

13 Rev. 05/2020
FURNACE PARTS LIST
Firebox
1) Firebox
2) Firebox door
3) Firebox door hoses and elbows
4) Firebox door handle
5) Firebox door hinge
6) Firebox door latch
7) Firebox door handle holder (not shown)
8) Firebox door gasket
9) Firebox door frame
10) Firebox / base connector clamps
11) Firebrick
12) Standard grates
13) Optional shaker grates (not shown)
14) Sand (not shown)
15) Flash curtain / heat shield (next page)
Water jacket
16) Water jacket (surrounds rebox)
18) Supply / Return Valve
19) Return line threaded connector
20) Relief vent pipe
Air supply
22) Combustion air blower (400 CB - 2 Fans)
23) Flipper assembly
24) Air box(s)(next page)
25) Combustion air percentage tube
26) Automatic Fan Switch (A.F.S.)
Chimney and top flue
27) Chimney Stub
28) Chimney extension(s) (not shown)
29) Flue (next page)
30) Flue cover plate (next page)
31) Flue scraper (not shown)
*Picture references pre 2015 HEATMOR
Ashes
32) Ash pan
33) Ash auger (not shown)
34) Ash auger tube
35) Ash auger tube cover plate
Bladder assembly
36) Bladder
37) Bladder gate valve and hose
38) Fluid level sensor
39) Bladder inspection cover plate
Electrical
41) Electrical supply junction box
42) Electrical plug outlets
43) High Temperature Safety Shuto󰀨
44) Electronic Auquastat Controller
45) Front light and combustion air
blower control switch
Housing
46) Outer front door (not shown)
47) Outer rear door (not shown)
48) Roof
49) Sides (not shown)
50) Insulation (not shown)
Optional hot water internal coil
51) Internal coil (not shown)
Lift hook
52) Lift ring
53) Light Globe, Keys, Manual

14 Rev. 05/2020
MINIMUM CLEARANCE SEPARATION SPECIFICATIONS
The HEATMOR™ furnace, is certied to be installed outside, away from other
buildings. Please observe the following “Clearance to Combustibles” guidelines. If you
have any further questions, which are not addressed in this Operators Manual, please
contact your local dealer for further information.
♦To HEATMOR™ Stainless Steel Outdoor Furnace Back. 96 Inches
♦ To HEATMOR™ Stainless Steel Outdoor Furnace Top. 18 Inches
♦To HEATMOR™ Stainless Steel Outdoor Furnace Front. 48 Inches
♦To HEATMOR™ Stainless Steel Outdoor Furnace Chimney. 96 Inches
♦To HEATMOR™ Stainless Steel Outdoor Furnace Sides. 6 Inches
♦Do not store combustible liquids or materials near the furnace.
♦It is not recommended to install the furnace in any form of building.
Before installing your HEATMOR™ Stainless Steel Outdoor Furnace, if in the United
States, always check any and all applicable state and local regulations and inform
your insurance agent.
Before installing your HEATMOR™ Stainless Steel Outdoor Furnace, if in Canada,
always check any and all applicable Provincial and Municipal regulations and inform
your insurance agent.
HEATMOR™ strongly recommends not installing a HEATMOR™ Stainless Steel
Outdoor Furnace within 50 feet of any ammable structure.
A HEATMOR™ Stainless Steel Outdoor Furnace should be located with consideration
to your neighbor’s property and in accordance with local ordinances.
HEATMOR™ Outdoor Furnaces, Model 100 CSS, 200 CSS and 400 CSS are not
designed or certied to be located in densely populated areas.
CHAPTER 5

15 Rev. 05/2020
CHAPTER 6
WARNINGS AND PRECAUTIONS
Please read the following list of cautions, warnings and dangers before installing
and operating your HEATMOR™ STAINLESS STEEL OUTDOOR FURNACE. If you
have any questions or concerns regarding any of the following cautions, warnings,
dangers or instructions in this Operations and Maintenance manual, please contact
your local dealer.
Installation
Installation should be performed by a qualied installer and will comply with all the
requirements of the authority having jurisdiction over the installation.
1) The HEATMOR™ furnace is designed for outside installations, away from
other buildings.
2) Please observe the following “ Clearance to Combustibles “ guidelines.
To unit back = 96 inches To unit sides = 6 inches
To unit front = 48 inches To chimney = 96 inches
To unit top = 18 inches
3) Before installing the furnace, always check any and all applicable provincial
and local regulations.
4) A HEATMOR™ Stainless Steel Outdoor Furnace should be located with
consideration to your neighbor’s property and in accordance with local
ordinances. HEATMOR™ Outdoor Furnaces, Model 100 CSS, 200 CSS and
Model 400 CSS, are not designed to be located in densely populated areas.
5) HEATMOR™ suggests the use of brass ttings when installing the unit.
6) Before installing the HEATMOR™ furnace, contact and inform your
insurance agent.
7) The HEATMOR™ Outdoor Furnace is to be installed on a concrete base only.
Any attempt to place the furnace on any other surface may void the warranty.
8) Do not connect the HEATMOR™ furnace to the chimney of any existing
heating system.
9) This unit was not designed, nor is it recommended, for use as a stand-alone
heating system. A back up source of heat must be in place to prevent the outdoor
furnace from freezing and to provide supplementary heat for the heated
buildings.
10) Do not pressurize the HEATMOR™ Outdoor Furnace. This unit is designed to
operate under atmospheric pressure only.
11) Place the in-line ll/drain assembly in a location where the drained contents
of the HEATMOR™ will not cause damage to the surrounding areas or it’s contents.

16 Rev. 05/2020
Electrical
1) Do not connect the electrical components of the HEATMOR™ Outdoor Furnace to
any other electrical appliance.
2) This HEATMOR™ Outdoor Furnace operates on 115-volt power only. Do not connect the
furnace to a 220-volt electrical supply.
3) HEATMOR™ recommends a licensed professional electrician make all the
necessary electrical connections involved with the installation of the furnace.
4) Always disconnect the HEATMOR™ Outdoor Furnace from the main electrical supply
before servicing any of the electrical components of the HEATMOR™ Outdoor
Furnace.
5) Always disconnect any existing electrical connections to any in-house heating system,
before installing the outdoor furnace to any existing indoor heating system or
appliances.
6) The red wire from the New Style High-Limit on the back of the
HEATMOR™ should be wired to the indoor temperature control to
override the thermostat. This will dissipate excess heat in the event of
a possible malfunction with the HEATMOR™ (The red wire is capped
o󰀨 in the electrical junction box when the HEATMOR™ is new.)
Other
The unit may be connected to an existing indoor boiler system by installing a
water-to-water heat exchanger.
1) HEATMOR™ recommends that you contact a licensed professional plumber to
make all necessary plumbing installations between the HEATMOR™ furnace and
the existing heating system of your building(s).
2) Do not operate the HEATMOR™ furnace until all electrical and water line
connections have been properly installed and tested.
3) Do not allow any re in the rebox until the HEATMOR™ has the correct amount
of Heat Transfer Fluid (HTF) and sand installed.
4) Absolutely no re in the rebox when performing any repair. Do not perform this
repair when unit HTF temperature is unsafe. Always wear proper personal
protective equipment when working with HTF and chemicals.

17 Rev. 05/2020
CHAPTER 7
4”
BASE: OUTDOOR FURNACE SITS ON THIS PAD
50”
58”
26”
12”
10”
PATIO STONES OR SEPARATE CEMENT SLAB
FOR CONVENIENT LOADING
48”
OUTDOOR FURNACE SITS HERE
ASH AUGER
LOADING AREA
GROUND
LEVEL
FOUR INCH GRAVEL BASE
CEMENT BASE
UNDERGROUND LINES
MODEL 100 PAD SPECIFICATIONS
The actual pad size is 50” x 58”. This gives
approximately 2” extra on all sides of furnace.
CAUTION: Do not exceed this length
measurement. Width can be wider if desired.
The bottom of the loading door is 24” above
ground or base of furnace. If you desire to
have the leading door higher, you can do so
by making the pad depth thicker.
Example: 12” instead of 4” or any gure in
between.
Patio stones or separate cement pad in front
of the loading door should NOT be attached
to main base of furnace.
It is recommended to use steel mesh or R-bar
in pad for strength.
Benefits to raising the pad:
1. Gives space below the ash auger to place
a pail for convenient ash removal.
2. Allows better visibility of the rebox.
3. Less bending when adding coal.
4. Keeps smoke above the operator.
5. Protects the base of the HEATMOR™.
PATIO STONES OR
SEPARATE CEMENT SLAB.
CEMENT BASE 4” - 12”
HIGHER THAN WHERE THE
OPERATOR STANDS.
LOADING
DOOR
SIDE VIEW
HOLES FOR HOOK-UPS
6”
AUGER

18 Rev. 05/2020
4”
BASE: OUTDOOR FURNACE SITS ON THIS PAD
70”
26”
12”
10”
PATIO STONES OR SEPARATE CEMENT SLAB
FOR CONVENIENT LOADING
48”
OUTDOOR FURNACE SITS HERE
ASH AUGER
LOADING AREA
GROUND
LEVEL
FOUR INCH GRAVEL BASE
CEMENT BASE
UNDERGROUND LINES
MODEL 200 PAD SPECIFICATIONS
The actual pad size is 50” x 70”. This gives
approximately 2” extra on all sides of furnace.
CAUTION: Do not exceed this length
measurement. Width can be wider if desired.
The bottom of the loading door is 24” above
ground or base of furnace. If you desire to
have the leading door higher, you can do so
by making the pad depth thicker.
Example: 12” instead of 4” or any gure in
between.
Patio stones or separate cement pad in front
of the loading door should NOT be attached
to main base of furnace.
It is recommended to use steel mesh or R-bar
in pad for strength.
Benefits to raising the pad:
1. Gives space below the ash auger to place
a pail for convenient ash removal.
2. Allows better visibility of the rebox.
3. Less bending when adding coal.
4. Keeps smoke above the operator.
5. Protects the base of the HEATMOR™.
PATIO STONES OR
SEPARATE CEMENT SLAB.
CEMENT BASE 4” - 12”
HIGHER THAN WHERE THE
OPERATOR STANDS.
LOADING
DOOR
50”
SIDE VIEW
HOLES FOR HOOK-UPS
6”
AUGER

19 Rev. 05/2020
BASE: OUTDOOR FURNACE SITS ON THIS PAD
88”
26”
12”
10”
PATIO STONES OR SEPARATE CEMENT SLAB
FOR CONVENIENT LOADING
48”
OUTDOOR FURNACE SITS HERE
ASH AUGER
LOADING AREA
GROUND
LEVEL
FOUR INCH GRAVEL BASE
CEMENT BASE
MODEL 400 PAD SPECIFICATIONS
The actual pad size is 50” x 88”. This gives
approximately 2” extra on all sides of furnace.
CAUTION: Do not exceed this length measurement.
Width can be wider if desired.
The bottom of the loading door is 24” above ground
or base of furnace. If you desire to have the leading
door higher, you can do so by making the pad depth
thicker.
Example: 12” instead of 4” or any gure in between.
Patio stones or separate cement pad in front of the
loading door should NOT be attached to main base
of furnace.
It is recommended to use steel mesh or R-bar
in pad for strength.
Benefits to raising the pad:
1. Gives space below the ash auger to place
a pail for convenient ash removal.
2. Allows better visibility of the rebox.
3. Less bending when adding coal.
4. Keeps smoke above the operator.
5. Protects the base of the HEATMOR™.
PATIO STONES OR
SEPARATE CEMENT SLAB.
CEMENT BASE 4” - 12”
HIGHER THAN WHERE THE
OPERATOR STANDS.
LOADING
DOOR
50”
SIDE VIEW
6”
HOLES FOR HOOK-UPS
AUGER

20 Rev. 05/2020
CHAPTER 8
INSTALLATION OF THE HEATMOR™ FURNACE
Installation should be performed by a qualied installer and will comply with all the
requirements of the authority having jurisdiction over the installation.
Principles
1) Need to have an airtight seal between the concrete base and the perimeter of the
rebox base.
2) Need to seal the perimeter of the entire HEATMOR™ so rodents are not able to nd a
home inside the HEATMOR™.
3) Need to lift the HEATMOR™ without damaging it.
Equipment Required
1) It is not possible to lift a HEATMOR™ with the forks of a
forklift under the HEATMOR™. It must be lifted from the
top, by the lifting hook. A crane or heavy backhoe works
best.
Placing the HEATMOR™ on the Concrete Base
2) Before setting the HEATMOR™ onto the concrete base, it
is a good idea to place a solid sheet of the proper
“reective air foil” (also called bubble foil) between the
concrete and the HEATMOR™. This will absorb ridges in
the concrete and make it easier to apply caulking around
the inside perimeter of the base of the HEATMOR™. This
reective foil will also reect escaping heat up into the
sand,
and help prevent air leaks into the rebox if cement
cracks.
3) Make sure the total area of the base (where the sand is
going) is on solid
concrete. Do not let the base extend past the hole in the concrete where the
lines come in.
4) After the HEATMOR™ is in place perform the following;
Caulking around the Firebox Base
A) One person should get into the HEATMOR™.
B) Apply a substantial bead of caulking around the entire inside perimeter of
the base. This will give an airtight seal so no air will seep through the sand.
This should require about three tubes of High Temperature Silicone.
Caulking around the Outside Perimeter of HEATMOR™
C) With a sharp knife, trim any excess bubble foil that
extends past the base of the HEATMOR™.
D) Apply a bead of caulking around the entire outside
5) Remove transport plugs from relief vent on the roof of your
furnace, supply ball valve, and return pipe on the back of
your furnace. (3 di󰀨erent plugs)
6) Close supply valve located on the back of your furnace.
Lift Hook
Supply Valve (closed)