Williams 4505621A Owner'S Manual Download Page 4

 

Safety Rules

 

 

 

 

WARNING:  

Read these rules and the instructions 

carefully.  Failure  to  follow  these  rules  and 
instructions  could  cause  a  malfunction  of  the 
furnace.    This  could  result  in  death,  serious  bodily 
injury and/or property damage.  

INSTALLATION  MUST  CONFORM  TO  LOCAL  CODES.  IN  THE 
ABSENCE 

OF 

LOCAL 

CODES, 

INSTALLATION 

MUST 

CONFORM TO THE NATIONAL FUEL GAS CODE, ANSI Z223.1. 
THE 

APPLIANCE, 

WHEN 

INSTALLED 

MUST 

BE 

ELECTRICALLY 

CONNECTED 

AND 

GROUNDED 

IN 

ACCORDANCE  WITH  LOCAL  CODES  OR,  IN  THE  ABSENCE 
OF  LOCAL  CODES,  WITH  THE  CURRENT  NATIONAL 
ELECTRICAL CODE ANSI/NFPA NO. 70. 

In Canada

:  

1.  Installation  must  conform  to  local  codes  or,  in 

the  absence  of  local  codes,  the  current 
CAN/CGA B149 installation code. 

2.  The  appliance,  when  installed,  must  be 

electrically 

connected 

and 

grounded 

in 

accordance with local codes or, in the absence 
of  local  codes,  with  the  current  CSA  C22.1 
Canadian Electrical code. 

3.  Field  conversions  for  high  altitude  are  not 

permitted in Canada.  

4.  Reference is made in this manual regarding gas 

type  as  L.P.G.  Be  advised  that  L.P.G.  is  not 
available in Canada, refer to propane/L.P. Gas. 

 

1.  Use  only  manufacturer's  replacement  parts.  Use  of  any 

other parts could cause injury or death. 

2.  DO NOT install the furnace in an alcove. 

3.  DO NOT install this furnace where it could be isolated by 

closing doors to the heated space. 

4.  DO  NOT  install  this  furnace  in  a  travel  trailer  or 

recreational vehicle. 

5.  MAINTAIN  all  clearances  specified  in  section  "Locating 

Wall furnace and Thermostat" and "Vent Installation." 

6.  BE SURE this furnace is for the type of gas to be used. 

Check  the  rating  plate  by  the  gas  valve  in  the  lower 
cabinet. Do not change it to use other gases without the 
proper manufacturer’s Gas Conversion Kit. 

7.  For  natural  gas,  the  minimum  inlet  gas  supply  pressure 

for  the  purpose  of  input  adjustment  is  5"  water  column. 
The  maximum  inlet  gas  supply  pressure  is  7"  water 
column. 

For L.P. Gas, the minimum inlet gas supply pressure for 
the purpose of input adjustment is 11" water column. The 
maximum inlet gas supply pressure is 13" water column. 

8.  Any  safety  screen,  guard  or  parts  removed  for  servicing 

this  appliance  must  be  replaced  prior  to  operating  the 
appliance  to  avoid  property  damage,  bodily  injury  or 
death. 

9.  Install  the  furnace  vent  directly  to  the  outdoors,  so  that 

harmful gases will not collect inside the building.  Follow 
the  venting  instructions  for  your  type  of  installation 
exactly.    Use  only  the  type  and  size  of  vent  pipe  and 
fittings specified.  

10.  BE  SURE  to  provide  for  adequate  combustion  and 

ventilation air.  The flow of this air to the furnace must not 
be blocked. 

11.  NEVER vent flue gases into another room, a fireplace or 

any  space  inside  a  building.  This  could  cause  property 
damage, bodily injury or death. 

12.  Never test for gas teaks with an open flame. Use a soap 

solution to check all gas connections. This will avoid the 
possibility of fire or explosion. 

13.  ALLOW  the  furnace  to  cool  before  servicing.    Always 

shut  off  electricity  and  gas  to  the  furnace  when  working 
on it.  This will prevent any electrical shocks or burns. 

14.  DUE TO HIGH TEMPERATURES, locate the furnace out 

of traffic and away from furniture and draperies. 

15.  ALERT children and adults to the hazards of high surface 

temperatures  and  warn  them  to  keep  away  to  avoid 
burns or clothing ignition. 

16.  CAREFULLY supervise young children when they are in 

the same room with the furnace. 

17.  DO NOT place clothing or other flammable material on or 

near furnace. 

18.  INSTALLATION  and  REPAIR  must  be  done  by  a 

qualified  service  person.    The  appliance  should  be 
inspected  before  use  and  at  least  annually  by  a 
professional service person. More frequent cleaning may 
be required due to excessive lint from carpeting, bedding 
material,  etc.    It  is  important  that  control  compartments, 
burners  and  circulating  air  passages  be  kept  clean.  
Failure  to  keep  burner-control  compartment  and  other 
parts  of  furnace  clean  can  cause  dangerous  conditions 
to develop which can cause injury and even death.  

19.  BE AWARE of good safety practices by wearing personal 

protective equipment such as gloves and safety glasses 
to avoid being injured by sharp metal edges in or around 
furnace and while cutting or drilling holes in wood and/or 
sheet metal. 

20.  CAUTION:  Label  all  wires  prior  to  disconnection  when 

servicing controls.  Wiring errors can cause improper and 
dangerous  operation.  Verify  proper  operation  after 
servicing. 

21.  DO NOT store or use gasoline or other flammable liquids 

or vapors near the furnace. 

WARNING: 

Do  not  use  this  furnace  if  any 

part  has  been  under  water.  Immediately  call 
a  certified  service  technician  to  inspect  the 
furnace and to replace any part of the control 
system  and  any  gas  control  which  has  been 
under water. 

 

 

Summary of Contents for 4505621A

Page 1: ...ion adjustment alteration service or maintenance can cause injury or property damage Refer to this manual For assistance or for additional information consult a qualified installer service agency or t...

Page 2: ...do not involve defective workmanship or materials DUTIES OF THE CONSUMER 1 The heating equipment must be installed by a qualified installer and operated in accordance with the installation and homeown...

Page 3: ...tallation 10 12 Operating Your Furnace 13 15 Start Up Procedure 13 Operating Instructions 14 15 How to Care for Your Furnace 16 Gas Conversion Kits 16 Repair Parts Parts Lists 17 18 Troubleshooting Ch...

Page 4: ...directly to the outdoors so that harmful gases will not collect inside the building Follow the venting instructions for your type of installation exactly Use only the type and size of vent pipe and fi...

Page 5: ...the standards set by the American National Standards Institute and the design has been certified by CSA as conforming to these standards Care has been taken to assure that your furnace will operate sa...

Page 6: ...openings supplying this furnace are kept clear at all times Continued safe and satisfactory performance of this furnace requires but is not limited to periodic examination of the vent system pilot fl...

Page 7: ...gh away from the furnace to prevent it from being heated directly by the furnace Select a location in the area most frequently used or best situated to control the temperature of the entire house Avoi...

Page 8: ...t is practical but if it is necessary to use one vent for two furnaces be sure the vent or chimney has an interior liner at least 6 inches in diameter 7 If two furnaces are connected to a chimney or v...

Page 9: ...atural gas and 10 0 inches for L P Gas If the furnace is equipped for L P Gas the gas tank must be provided with a regulator which will reduce the line pressure to the furnace to between 11 and 13 inc...

Page 10: ...nces 8 Remove the grille from the furnace 9 Lower the furnace into the floor opening until the flanges on the furnace cabinet rest on the floor 10 Fasten the furnace in place by driving nails through...

Page 11: ...ure 12 If the flame is not pulled into the draft hood the chimney is not providing sufficient draft This can allow hazardous gases to escape the vent system Find and correct the causes of this malfunc...

Page 12: ...Installing Your Furnace 12 FIGURE 9 Flame Adjustment FIGURE 10 Installation of Draft Hood FIGURE 11 Flame Pattern FIGURE 12 Performance Check...

Page 13: ...0 to 12 inches of water should be used for this measurement The manifold pressure must be measured with the burner and pilot operating Any major changes in flow must be made by changing the size of th...

Page 14: ...4 Wait five 5 minutes to clear out any gas then smell for gas including near the floor IF YOU SMELL GAS STOP Follow B In the safety information above If you don t smell gas go to the next step 5 Find...

Page 15: ...mit control if the furnace is in an area occupied by children or elderly persons who could fall on the furnace and be burned Burner Flame Characteristics Start the furnace and let it operate for at le...

Page 16: ...of the cabinet about one inch and then lift it out of the cabinet WARNING DANGER OF BODILY INJURY OR DEATH DO NOT OPERATE THE FURNACE WITH A BROKEN OR MISSING PILOT OBSERVATION DOOR If the control and...

Page 17: ...Replacement Parts Accessories 17 WILLIAMS GAS FIRED FLOOR FURNACE REPLACEMENT PARTS FOR 450 600 MODEL SERIES FLOOR FURNACE FOR PARTS LISTING SEE PAGE 18 USE ONLY MANUFACTURERS AUTHORIZED PARTS...

Page 18: ...NITOR P285500 P285500 P285500 P285500 9 SWITCH LIMIT P323031 P323031 P323031 P323031 10 KEY CONTROL P322445 P322445 P322445 P322445 11 ROD CONTROL 4A0037 4A0037 4A0037 4A0037 12 ROD LIGHTER P322431 P3...

Page 19: ...ow pressure Adjust pressure regulator 6 Failure to ignite A Main gas off Open manual valve B Defect in gas valve Replace C Defective thermostat Replace 7 Burner won t turn off A Poor thermostat locati...

Page 20: ...ctly a fire or explosion may result causing property damage personal injury or loss of life Williams Furnace Company 250 West Laurel Street Colton CA 92324 909 825 0993 FAX 909 824 8009 www wfc fc com...

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