Clayton CL1660E User Manual
Owner’s Installation and Operation Manual
Model CL1660E
Report No: 0215WH080S
This unit is certied UL 391(R2014)
U.S. ENVIRONMENTAL PROTECTION AGENCY
Certied to comply with the 2017 particulate
emission standards. Not approved for sale after
May 15, 2020
Installation is to be preformed by a
qualied installer.
SAVE THESE INSTRUCTIONS
NOT FOR USE IN A MOBILE HOME
United States Stove Company
227 Industrial Park Rd.
South Pittsburg, TN 37380
852858B-3002G
37.79”
26.54”
48”
48.81”
CAUTION:
• Power source not controlled by furnace main disconnect.
• Respect all local and national codes when installing this unit.
• This unit is not to be connected to a chimney ue serving another appliance.
• This unit is designed to burn solid hardwood only.
2
Specications
CONGRATULATIONS!
You’ve purchased a heater from North America’s oldest manufacturer of wood burning products.
By heating with wood you’re helping to CONSERVE ENERGY!
Wood is our only Renewable Energy Resource. Please do your part to preserve our wood supply. Plant at least
one tree each year. Future generations will thank you.
Combustible: Wood
Flue Pipe Diameter: 6” (153cm)
Flue Pipe Type: (Standard Single Wall or Double Wall): Black or Blued Steel 2100°F (650°C) Class “A”
Minimum Chimney Height: 12’
Maximum Log Length: 28”
Electrical: 120V, 60Hz, 3.4A per blower
Dimensions
Combustion Chamber:
Width x Depth:
Volume:
Cubic Feet:
Door Opening: Width x Height: 12.625” X 12.5”
Weight (lbs): 509lbs
17.4” X 28.3”
6.27 cubic ceet
This manual describes the installation and operation of the Clayton, CL1660E
wood heater. This heater meets the 2016 U.S. Environmental Protection Agency’s
emission limits for wood heaters sold after May 15, 2016. Under specic EPA
test conditions this heater has been shown to deliver heat at a rate of 33,438
to 77,456 BTU/hr. This heater achieved a particulate emissions rate of 0.305
0215WH080E
This wood heater has a manufacturer-set minimum low burn rate that must not be altered. It is against federal
regulations to alter this setting or otherwise operate this wood heater in a manner inconsistent with operating
instructions in this manual.
The operation of this wood heater in a manner inconsistent with the owner’s manual will void your warranty and
is also against federal regulations.
This heater is designed to burn natural wood only. Higher efciencies and lower emissions generally result when
burning air dried seasoned hardwoods, as compared to softwoods or to green or freshly cut hardwoods.
This wood heater needs periodic inspection and repair for proper operation. It is against federal regulations to
operate this wood heater in a manner inconsistent with operating instructions in this manual.
lbs/mmBTU when tested to method CSA B415.1-10 (*and an overall efciency
of 61.9%.) The maximum overall heat output of this heater was tested to be
104,720 BTU/hr.
3
Safety
• Do not operate with fuel loading or ash removal doors open.
• Do not connect this unit to a chimney ue serving another appliance.
• Danger: Risk of re or explosion. Do not burn garbage, gasoline, naphtha, motor oil, or other inappropriate
materials. Do not use chemicals or uids to start the re.
• Warning: Risk of re. Do not operate with ue draft exceeding .060” water column/14.93 Pascals. Do not
operate with fuel loading and ash removal doors open. Do not store fuel or other combustible materials
within marked installation clearances. Inspect and clean ues and chimney regularly.
• Caution: Hot surfaces. Keep children away. Do not touch during operation.
• The heat exchanger, ue pipe, and chimney must be cleaned regularly to remove accumulated creosote
and ash. Ensure that the heat exchanger, ue pipe, and chimney are cleaned at the end of the heating
season to minimize corrosion during the summer months. The appliance, ue pipe, and chimney must be
kept in good condition. These instructions also apply to a draft inducer if used. To prevent ame or smoke
spillage, the slide bafe must be pulled out and the fuel loading door left cracked for 10 seconds prior to
opening door fully. Load fuel carefully or damage may result.
• Hot while in operation. Keep children, clothing and furniture away. Contact may cause skin burns.
• Do not use chemicals or uids to ignite the re.
• Do not leave the furnace unattended when the door is slightly opened.
• Do not burn garbage, ammable uid such as gasoline, naphtha or motor oil.
• Always close the door after the ignition.
• Consult your municipal building department or re ofcials about permits, restrictions and installations
requirements in your area.
• INSPECT FLUE PIPES, FLUE PIPE JOINTS, AND FLUE PIPE SEALS REGULARLY TO ENSURE THAT SMOKE AND FLUE
GASES ARE NOT DRAWN INTO, AND CIRCULATED BY, THE AIR-CIRCULATION SYSTEM.
• CAUTION: CLEAN OUT OF THE HEAT EXCHANGER, FLUE PIPE CHIMNEY, AND DRAFT INDUCER, IF USED, IS
ESPECIALLY IMPORTANT AT THE END OF THE HEATING SEASON TO MINIMIZE CORROSION DURING THE SUMMER
MONTHS, CAUSED BY ACCUMULATED ASH.
• CAUTION: Do not operate furnace with power disconnected from the unit.
4
Unpacking And Preassemble
UNPACKING
1. Remove all packaging from the furnace.
2. Remove the supplied tools and parts from the furnace.
BRICK ALIGNMENT
Inspect for any damage. Ensure that the bricks are positioned correctly and not broken (see illustration for
proper brick arrangement).
Proper Fire Brick Alignment
TOOLS AND MATERIALS NEEDED FOR INSTALLATION
The following is a list of tools and materials needed to install your furnace.
• 7/16” socket wrench.
• 5/16” socket (Best if using a power drill and a socket bit).
• Pair of pliers or channel-locks.
• Power drill with an 1/8” drill bit to install sheet metal screws into connector pipe..
• Sheet metal screws.
• Non-combustible oor protector as specied in this manual.
• All chimney and chimney connector components required for your particular venting installation..
• Electrical wiring tools and supplies.
• Ductwork for supply and return air.
5
Furnace Installation
Ceiling
INSTALLATION OPTIONS
The installation of this furnace includes supplying electrical power, return (fresh air) ductwork, and supply air
ductwork. This furnace may be installed as a stand alone wood furnace.
See kit installation section in this manual to ensure proper assembly, installation and operation of your new
furnace.
If installing in an area with a fan it should not be allowed to create negative pressure in the room where the
furnace is installed.
LOCATING YOUR FURNACE (INSURE THAT THE REQUIRED MAINTENANCE CLEARANCES ARE MAINTAINED)
Your furnace must be installed as shown in this manual and in compliance with all local and national codes.
It is of the utmost importance that the clearances to combustible materials be strictly adhered to during
installation of the furnace. Refer to the table and diagrams below for minimum required clearances.
Dimension Inches
A Backwall to Appliance 17
B Sidewall to Appliance 12
C Backwall to Flue 23
D Sidewall to Flue 22.5
E Supply Duct (rst 6 feet) 6
F Supply Duct (after rst 6 feet) 1
G Minimum Duct height 6
H Ceiling Height to Floor 84
J Top of Door to Ceiling 48
* Closest Point of Zero Clearance 2’
Side wall
Back wall
A
B
D
CLEARANCE TO COMBUSTIBLES
C
Side wall
F
G
J
H
CLEARANCE TO COMBUSTIBLES
E
6
MAINTENANCE CLEARANCES
Your furnace has recommended minimum
maintenance clearance requirements. These
clearances insure that there is adequate room
to preform maintenance and service your
furnace. DO NOT store fuel within the specied
clearances. The clearances will change
depending on what kits are installed with your
furnace. See the tables and diagram below to
determine the clearances for your furnace.
N
Standard unit (no additional kits)
Dimension Inch
K Maintenance Clearance (Front) 24
L Maintenance Clearance (Left) 10
M Maintenance Clearance (Right) 10
N Maintenance Clearance (Rear) 29
Unit with Blower Kit
Dimension Inch
K Maintenance Clearance (Front) 24
L Maintenance Clearance (Left) 24
M Maintenance Clearance (Right) 24
N Maintenance Clearance (Rear) 36
FLOOR PROTECTOR
The furnace must be placed on solid
concrete, solid masonry, or when installed on
a combustible oor, on a oor protector. The
oor protector is required to provide heat, live
ember, and ash protection and must be of a
non-combustible, continuous solid surface to
protect against inltration of live embers and
ash. If a oor pad is used, it should be listed to UL
1618 (type 1 ember protection) or equal. For UL
Listed oor protectors, refer to manufacturers
instructions for installation directions. The oor
protector or non combustible oor must extend
under the furnace and beyond each side as
shown below.
ML
K
MAINTENANCE CLEARANCE
P
RQ
Dimension Inch
O Front 16
P Rear 2
Q Left 8
R Right 8
O
FLOOR PROTECTOR REQUIREMENTS
7
Duct Work Installation
We strongly recommend that the hot air ductwork be installed by a home heating specialist. If doing the
installation yourself, before you decide which installation will best suit your needs, consult a qualied heating
technician and follow his recommendations as to the safest and most efcient method of installation.
This furnace can be installed in two ways, as a stand alone unit, or in series with an existing furnace.
SUPPLY AIR (HOT AIR) PLENUM
The warm-air supply duct shall be constructed of metal in accordance with NFPA 90B, 2-1.1. The plenums installed
to the furnace shall be constructed of metal in accordance with NFPA 90B, 2-1.3.
When installing this furnace the hot air plenum is to have a minimum height of 24” (610mm) if the top of the rst
vertical section is not ush with the top of the rst horizontal section of ductwork. If the top of the plenum is ush
with the top of the rst horizontal section of ductwork then the minium height is 15” (381mm).
RETURN AIR (FRESH AIR)
The return (fresh) air intake on the furnace is on the rear of the unit. The ductwork must be mechanically
attached to the unit or blower kit box with sheet metal screws to ensure a proper operation.
STAND ALONE INSTALLATION
If installing this furnace as a stand alone unit, ensure all local codes and all instructions in this manual are followed,
including clearance to combustibles, oor protector specications and safety warnings.
Supply Air (Hot Air) Duct Work Outlet Size
26.54”
Supply Air Plenum With
Minimum Height Of 15”
Supply Air Plenum Minimum
Height Of 24”
8
INSTALLATION
CENTRAL INSTALLATION
ADD-ON INSTALLATION
9
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