COZY CF553D-H User manual

1018029-E_03/22Page 1
COUNTERFLOW
WALL FURNACE
Installation and Operating Instructions
Cozy Heating Systems | cozyheaters.com | 888-444-1212 | 250 West Laurel Street | Colton, CA 92324
- The coating selected to provide longer life to the heat exchanger      . Please provide adequate
ventilation if this occurs.
 DO NOT attempt any of


 

 
- THIS UNIT IS NOT TO BE INSTALLED IN MOBILE HOMES.
NATURAL GAS - CF403D-H, CF553D-H, CF407D-H, CF557D-H
PROPANE GAS - CF404D-H, CF554D-H, CF408D-H, CF558D-H
WARNING: Operation of this furnace without the properly installed, furnished vent system and vent cap could result in Carbon
Monoxide (CO) poisoning and possible death. For your safety, this furnace and the vent system should be inspected at least
annually by a qualified service technician.
CF55
CF40
WARNING: This product can expose you to chemicals including epichlorohydrin
which is known to the State of California to cause cancer and birth defects and/or
other reproductive harm. For information go to 
!
WARNING:  ,
alteration, service or maintenance can cause

for proper installation. For assistance or for

service agency or the gas supplier.
!
!WARNING: If the information in these instructions
is not followed exactly, a re or explosion may result
causing property damage, personal injury or loss of life.
— Do not store or use gasoline or other ammable vapors and
liquids in the vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone
in your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the re
department.
— Installation and service must be performed by a qualied
installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.

1018029-E Page 2
CONTENTS
Before Installation
Standards ........................................... 2
 ..................................... 3
Introduction ........................................ 3
Safety ................................................. 3
Venting ........................................... 4 -5
Combustion & Ventilation ................ -7
Installation
Locations ............................................ 8
...................... 8 -9
Installing ..................................... 10 -11
Controls ............................................ 11
 .................................. 11
Lighting Instructions .................... 12 -13
Maintenance
Proper Burner Flame ........................ 14
Operation .......................................... 14
Terminal Block Wiring Diagram ......... 15
........................ 15
Maintenance Instructions .................. 15
Wiring Schematics ............................ 
Kits:
• 14-PEK Extension Kit ........................ 17
•  .............. 18
• ............ 18
• 
Side Discharge Kits .......................... 19
Troubleshooting Charts ............... 20 -23
Installations In The State Of
Massachusetts.................................... 21
Parts
CF Part List ................................ 24 -27
Warranty ............................................. 28
The State of Massachusetts requires that installation
and service of a gas appliance be performed by a
plumber or gas tter licensed in the Commonwealth of
Massachusetts. See page 21.
These installation instructions are a general guide and do not
supersede applicable local codes and ordinances. Before planning


edition of National Fuel Gas Code, ANSI.Z223.1, or CAN1-B149).
        

the latest edition of National Electrical Code ANSI / NFPA 70, or
Canadian Electrical Code CSA-C22.1.
All of the ANSI and NFPA standards referred to in these installation




Installer must leave these instructions with the consumer, have
them complete, and return the warranty card.
READ CAREFULLY BEFORE INSTALLING UNIT
NFPA Standards:
NATIONAL FIRE PROTECTION
ASSOCIATION
1 Batterymarch Park

ANSI & Canadian Standards:
CSA GROUP



1018029-E_03/22Page 3
                 

access door. While the burner access door is open, check the rating plate to verify that the model number is correct and that

SPECIFICATIONS & DIMENSIONS
MODEL NUMBERS
CF403D-H CF407D-H CF553D-H CF557D-H CF404D-H CF408D-H CF553D-H CF558D-H
Gas Type Natural Propane
    
    
    
    
    
    
CFM 440 440 440 440
Type Control 24 Volt 24 Volt 24 Volt 24 Volt
    
Approx. Shipping Weight 104 lbs 107 lbs 104 lbs 107 lbs
Amps 2.25 2.55 2.25 2.55 2.25 2.55 2.25 2.55
Intermittent Ignition (IID) - IID - IID - IID - IID



              
           

INTRODUCTION
      
       
death. If you do not understand these instructions or your local

gas supplier, or the manufacturer.
 
trailer or mobile home.
 
a properly installed and maintained vent system. Do not exhaust

4. Locate the thermostat in a room or space that cannot be
separated by a door or other means from the room or space in

5. Adequate air for combustion and venting must be provided.
          󰀨  
immediately and disconnect the electric service. Do not use the




 

 󰀨

9. Due to high temperatures, the furnace should be located out of
󰀩
10. Children and adults should be alerted to the hazards of high

clothing ignition.
11. 
in the same room as the furnace.
12. 
or near the furnace.
13. Any safety screen guard or gill removed for servicing must be
replaced prior to operating the furnace.
          

it accidentally opened during shipping.
SAFETY

1018029-E Page 4
VENTING
1) Seal any unused openings in the venting system.
2) Inspect the venting system for proper size and horizontal
pitch, as required in the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 or the Natural Gas and Propane Installation
Code, CSA B149.1 and these instructions. Determine that
there is no blockage or restriction, leakage, corrosion and



connected to the venting system are located and other
spaces of the building.

5) Turn on clothes dryers and any appliance not connected
to the venting system. Turn on any exhaust fans, such as
range hoods and bathroom exhausts, so they are operating
at maximum speed. Do not operate a summer exhaust fan.
       
       
appliance is operating continuously.
7) Test for spillage from draft hood equipped appliances at
the draft hood relief opening after 5 minutes of main burner

8) If improper venting is observed during any of the above
tests, the venting system must be corrected in accordance
       
and/or Natural Gas and Propane Installation Code, CSA
B149.1.
9) After it has been determined that each appliance
       
   
       
appliance to their previous conditions of use.
!WARNING: CARBON MONOXIDE POISONING HAZARD
Failure to follow the steps outlined below for each appliance connected to the venting system being placed into
operation could result in carbon monoxide poisoning or death.
The following steps shall be followed for each appliance connected to the venting system being placed into operation,
while all other appliances connected to the venting system are not in operation:
This appliance must be properly connected to a venting system. Consult local ordinances governing venting. Install only UL listed type




separate solid fuel burning appliance.
󰀨
󰀨
Any angle greater than 45 degrees from the vertical is considered horizontal. The total horizontal run of a vent plus the horizontal vent
󰀨


1018029-E_03/22Page 5
VENTING
THIS APPLIANCE IS EQUIPPED
WITH A BLOCKED FLUE SWITCH
    
   


  
and the top of the draft diverter, simply push the red button on

then the vent system must be checked and corrected.
NOTE: An existing vent that has worked for years may not be
adequate for today’s appliances because of higher eciency
requirements that result in lower stack temperatures.
(See list of possible causes and corrections on page 23)
          
󰀨
󰀨
Any angle greater than 45 degrees from the vertical is considered
horizontal. The total horizontal run of a vent plus the horizontal
vent connector shall be not greater than 75 percent of the vertical
height of the vent.
 󰀨         

is encountered.
WARNING: Do not bypass the blocked ue switch. To do so could expose the consumer to property
damage, personal injury or possible death.
!
WARNING: Operation of this wall furnace when not
connected to a properly installed and maintained
venting system or tampering with the blocked
ue switch can result in Carbon Monoxide (CO)
poisoning and possible death.
!
FIG. 1
Chimney
More than 10’
10’
2’ Min.
3’ Min.
Height above
any roof surface

horizontally

10’ or Less
2’ Min.
3’ Min.
Chimney

FIG. 2: Vent Installation
12’ Min.
Listed
Vent Top
Storm Collar

Oval to

Adapter

Vent Pipe
Base Plate
Header Plate
2 x 4
Wall Studs
Ceiling
Plate
Spacer
Lances
Ceiling
Plate
Spacers
Ceiling
Plate
Spacers
2’ Min.
3’
FIG. 3
RED
BUTTON
BLOCKED
FLUE SWITCH
DRAFT
DIVERTER
RELIEF
OPENING

1018029-E 

.



square inch per 1,000 
See Figure
4-A (on page 7).






Each of these openings using vertical ducts shall have a minimum free area of one square inch per 4,000 btu/hr of total input
rating of all gas appliances. See Figures 4-B and 4-C. If horizontal ducts are used, the minimum free area shall be one
square inch per 2,000  of total input rating of all gas appliances.
                   
ceiling. The minimum free area of this opening shall be one square inch per 3,000 btu/hr of the total input rating of all gas
appliances but not less than the sum of the areas of all vent connectors in the space. See Figure 4-D (on page 7).
When calculating the amount of fresh air needed you must include make-up air requirements for the operation of exhaust

Additional information can be found in the latest edition of ANSI Z223.1 (National Fuel Gas Code).
COMBUSTION AND VENTILATION AIR

1018029-E_03/22Page 7
COMBUSTION AND VENTILATION AIR
UL Listed Vent Cap
UL Listed Gas Vent
Ventilation Louvers
(each end of attic)
Outlet Air
Inlet Air Duct
(Ends 1 ft. [300mm]
above floor)
Inlet
Grille
Inlet
Grille
UL Listed Vent Cap
UL Listed Gas Vent
Opening
Alternate
Opening
Location
FIG. 4-C


VENTILATED ATTIC.
FIG. 4-D



UL Listed Vent Cap
UL Listed Gas Vent
Opening
Opening
UL Listed Vent Cap
UL Listed Gas Vent
Ventilation

Outlet Air
Ventilation Louvers
(each end of attic)
Inlet Air
FIG. 4-A FIG. 4-B







1018029-E Page 8
LOCATION AND SPECIAL PRECAUTIONS
ROUGH-IN INSTRUCTIONS
Based on 4,000 BTU of total input rating of all gas
appliances, the heater only requires a minimum free area of:
BTU SQ. IN. HOLE SIZE SQ. IN.
   
   
   
   
   
   

area to be heated for optimal heat distribution.
  

          
   
.
            
17–20 (On pages 18 and 19).
Using Adjacent Stud Space
for All Combustion Air From Outside
FIG. 5
Holes Connecting to Ventilated Attic

Air
Grille
Floor
Plate
Ceiling
Plate



In selecting a location for installation, it is necessary to
provide adequate accessibility clearances for servicing
and proper operation. Minimum clearance from cabinet to
combustible construction:
Side Wall - 4” Floor - 0” Ceiling - 4”
See Figure 6. The unit may be recessed and rest directly
against side studs and the inside surface of the rear wall.

1018029-E_03/22Page 9

Gas Inlet Hole


Diameter
Knockout



FIG. 8
GAS ROUGH-IN
ELECTRICAL ROUGH-IN
Check local codes for requirements as to the size and type
of gas line required. See Figure 8 for location of gas inlet
holes in furnace cabinet.
        
        

          
       


accessible for test gauge connection should be installed
immediately upstream of the gas supply connection to
the appliance. Some codes and ordinances require that
the manual valve be located outside the appliance. See
Figure 9.
      󰀨   
disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess
of ½ psig.
The appliance must be isolated from the gas supply piping
󰀨
any pressure testing of the gas supply piping system at test
pressures equal to or less than ½ pig.
It is required by the National Fuel Gas Code that a drip
line be installed near the gas inlet. This should consist of a
vertical length of pipe tee connected into the gas line that

particles may collect.
FIG. 7
Wire Nut (not provided)
Header Plate
115 V.A.C. Line In
B-W
Vent Pipe

2x4
Stud
To Heater Gas
Control Valve
󰀨
Drip Leg

Pressure Tap
Gas
Supply
Line
FIG. 9

located on top of header plate for recessed, or in a receptacle

Consult local codes or ordinances. See Figure 7.
MODEL NUMBER AMPS
CF403D, CF404D, CF553D & CF554D ............2.25
CF407D, CF557D, CF408D & CF558D ............2.55

1018029-E Page 10
INSTALLATION
RECESSED UP TO 9-1/4” INSTALLATION
1. 
2. 
plate.
3. 

4. 

5. 
cut out in ceiling plate. Install vent pipe into position, be sure to lock bottom of vent pipe
into the base plate. Nail second ceiling plate spacer in place. See Figure 12.
6. 
spacers must be installed at the second and subsequent ceiling levels. See Figure 13.
7. 
             
bottom of the header plate, see Figure 7 (on page 9).
 
󰀨

             
Figure 11.
 
8. Make gas connection using connector the same size as gas connection of furnace.

DO NOT USE OPEN FLAME.
9. 
FLUSH TO WALL INSTALLATION
1. 



Install B vent type base plate (not supplied) to top of vent collar. Install ceiling plate
              

2. 



included).
3. 
             
           


4. Make gas connection using connector the same size as gas connection of furnace.

DO NOT USE OPEN FLAME.
5. 
B-W Vent
Header
Plate
FIG. 11
NOTE: For proper combustion, make sure units are level front to back and side to side.
FIG. 10
HEIGHT:
From Header Plate to the Floor

