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Some Points to Remember

 

 

Learn to recognize the odour of LP Gas.

 Your local LP Gas dealer can give you a "Scratch and Sniff" pamphlet. Use it to 

find out what the propane odour smells like. If you suspect that your LP Gas has a weak or abnormal odour, call your LP 
Gas dealer. 

 

If you are not qualified, do not light pilot lights, perform service, or make adjustments to appliances on the LP Gas system. 
If you are qualified, consciously think about the odour of LP Gas prior to and while lighting pilot lights or performing service 
or making adjustments. 

 

Sometimes a basement or a closed-up  house has  a  musty smell that can cover up the  LP Gas odour. Do  not try to light 
pilot  lights,  perform  service  or  make  adjustments  in  an  area  where  the  conditions  are  such  that  you  may  not  detect  the 
odour if there has been a leak of LP Gas. 

 

Odour  fade,  due  to  oxidation  by  rust  or  absorption  on  walls  of  new  cylinders  and  tanks,  is  possible.  Therefore,  people 
should  be  particularly  alert  and  careful  when  new  tanks  or  cylinders  are  placed  in  service.  Odour  fade  can  occur  in  new 
tanks or reinstalled old tanks if they are filled and allowed to set too long before refilling.  Cylinders and tanks which have 
been  out  of service for a time may  develop  internal rust which  will cause  odour fade. If such conditions are suspected to 
exist,  a  periodic  sniff  test  of  the  gas  is  advisable. 

If  you  have  any  question  about  the  gas  odour,  call  your  LP  Gas 

dealer.  A periodic sniff test of the LP Gas is a good safety measure under any condition.

 

 

If,  at  any  time,  you  do  not  smell  the  LP  Gas  odorant,  and  you  should,  assume  you  have  a  leak.  Then  take  the  same 
immediate action recommended when you do smell the odorized LP Gas. 

 

If  you  experience  a  complete  "gas  out"  (the  container  is  under  no  vapour  pressure),  turn  the  tank  valve  off  immediately.  
If  the  container  valve  is  left  on,  the  container  may  draw  in  some  air  through  openings  such  as  pilot  light  orifices.  
If  this  occurs,  some  new  internal  rusting  could  occur.  If  the  valve  is  left  open,  then  treat  the  container  as  a  new  tank.  
Always be sure your container is under vapour pressure by turning it off at the container before it goes completely empty or 
having it refilled before it is completely empty. 

 
 

Technical Data 

OUTPUT HEATING CAPACITY 

kW 

3.96 

 

M

A

N

IF

O

L

D

 P

R

E

S

S

U

R

E

 

MAX 

NATURAL 

GAS 

mbar 

7.7 

kBTU/hr. 

13,500 

in 

W.C.

 

3.1 

INPUT RATING 

kW 

5.19 

LP 

mbar 

26.4 

kBTU/hr. 

17,700 

in 

W.C.

 

10.6 

MINIMUM INPUT RATING 
(LO Input) 

kW 

3.84 

MIN 

NATURAL 

GAS 

mbar 

4.6 

kBTU/hr. 

13,100 

in 

W.C.

 

1.8 

THERMAL EFFICENCY 

76.27 

LP 

mbar 

16.3 

LENGTH 

mm 

553 

in 

W.C.

 

6.6 

in 

21-3/4 

G

A

S

 R

A

T

E

 

MAX 

NATURAL 

GAS 

m

3

/h 

0.5 

HEIGHT 

mm 

715 

ft

3

/h 

17.8 

in 

28-1/8 

LP 

m

3

/h 

0.2 

DEPTH 

mm 

208 

ft

3

/h 

6.9 

in 

8-1/4 

MIN 

NATURAL 

GAS 

m

3

/h 

0.4 

WEIGHT  

kg 

26 

ft

3

/h 

13.3 

lbs. 

57 

LP 

m

3

/h 

0.1 

GAS CONNECTION 

NPT 

3/8 

FEMALE 

ft

3

/h 

5.3 

WALL HOLE DIAMETER 

mm 

50 

 

MINIMUM INLET 

PRESSURE 

 

NATURAL 

GAS 

mbar 

17.4 

in 

in 

W.C.

 

7.0 

AIR INLET DIAMETER 

mm 

49 

LP 

mbar 

27.4 

in 

1-7/8 

in 

W.C.

 

11.0 

EXHAUST PIPE DIAMETER 

mm 

35 

 

AIR FLOW 

m

3

/h 

220 

in 

1-3/8 

 

cfm 

129 

MAX WALL THICKNESS 

mm 

150 

 

MINIMUM AIR FLOW 

m

3

/h 

160 

in 

5-7/8 

 

cfm 

94 

MIN WALL THICKNESS 

mm 

500 

 

TOTAL ELECTRICAL LOAD 

86 

in 

19-5/8 

 

Summary of Contents for 1773511

Page 1: ...losion may result causing property damage personal injury or loss of life Williams Furnace Co 250 West Laurel Street Colton CA 92324 U S A MODEL Natural Gas Only 1773512 MODEL Propane Gas Only 1773511...

Page 2: ...d repair should be done by a QUALIFIED SERVICE TECHNICIAN The installation must conform to local codes or in the absence of local codes the installation must conform to the National Fuel Gas Code ANSI...

Page 3: ...qualified service technician to inspect the furnace and to replace any part of the control system and any gas control which has been under water Safety Information for Users of LP Gas Propane LP Gas i...

Page 4: ...is a good safety measure under any condition If at any time you do not smell the LP Gas odorant and you should assume you have a leak Then take the same immediate action recommended when you do smell...

Page 5: ...in Canada with CAN CSA C22 2 No 3 Installations in the State of Massachusetts All installations in the State of Massachusetts must use the following requirements when installing maintaining or operat...

Page 6: ...e of the terminal 18 inches 46 cm minimum E Clearance to unventilated soffit 12 inches 30 cm minimum clearance to vinyl soffit 36 inches 90 cm minimum F Clearance to outside corner 12 inches 30 cm min...

Page 7: ...be length wall thickness 1 5 16 inches 7 9 mm 4 Drill the mounting holes A 5 holes in the wall If possible use self tapping screws drill 1 8 inch diameter holes If self tapping screws cannot be used d...

Page 8: ...end Mark the location of the three holes for the screw anchors Figure 7 The flue grid must be vertical 12 Remove the vent cap and drill all the necessary holes diameter inch for the screw fittings pro...

Page 9: ...r inserting the screwdriver as indicated by the arrow 3 Remove the nozzle from the support and replace it with the correct one Reassemble the nozzle assembly and the screw indicated at point 1 Set the...

Page 10: ...l 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 is capped on the bottom in which condensation and fore...

Page 11: ...the furnace Checking the Gas Manifold Pressure The gas manifold pressure can be measured by connecting a test gauge to the connection provided on the gas valve Figure 8 B The furnace comes set from t...

Page 12: ...otor Moteur du Ventilateur de Combustion SF Flame View Lamp green lamp Lampe de Presence de Flamme Verte SB Lock Out Lamp red lamp Lampe de Verrouillage Rouge TR Current Transformer 120 24 V Transform...

Page 13: ...ond attempt is STOP Read the safety information above on this label Set the thermostat to the lowest setting by turning it counterclockwise This appliance is equipped with an ignition device that auto...

Page 14: ...needs to be refilled after 4 5 days NOTE The use of water low in limestone or distilled is advisable in order to prevent any possible calcareous sedimentation that may be difficult to remove Anticalca...

Page 15: ...nnect the test gauge and firmly tighten the screw of the gauge connection then check for gas leaks from it The HI and LO pressures must be adjusted as instructed above Never adjust them independently...

Page 16: ...s 4 Check air flow switch 5 Clean and check exhaust flue pipe and air intake pipe 6 Check for gas leaks on all connections 7 Check and adjust gas pressure Check red O Ring Gasket NRNG003 If it is dama...

Page 17: ...tion Programmable day blocks 1 2 3 4 5 Monday Friday 1 2 3 4 5 6 Monday Saturday 1 2 3 4 5 6 7 Monday Sunday 6 7 Saturday Sunday KEY A On Off Switch Pos I The appliance is controlled by the room therm...

Page 18: ...proceeds one day at a time Number 1 stands for Monday number 2 stands for Tuesday etc C To set the time press the Hour Selector button h Figure 10 E to set the hour and the Minutes Selector button m F...

Page 19: ...button and select the program to be cancelled B Simultaneously press the Program Selector Figure 10 C and SKIP button Figure 10 G for at least 2 seconds The selected program will be cancelled C Verifi...

Page 20: ...ximum velocity Troubleshooting Step 2 Point 3 Z1 Z1 is down closed but there is no voltage on the fan motor M Check wiring and connections If everything is okay replace the switch Point 4 Z2 Z2 is dow...

Page 21: ...temperature is cold replace the switch Point 9 M1 M1 is open and fan thermostat temperature is lower than 140 F Check wiring connections gas pressure and fan motor Clean fan blades and air grids If e...

Page 22: ...control box Point 16 RP8 No flame sensing Check flame sensor wiring and connections SCheck gas pressure and exhaust flue pipe If everything is okay replace the flame control box Point 17 EV2 No voltag...

Page 23: ...inter Switch Part Number P332630 Z8 Z3 Timer and Manual Program Mode Switch Part Number P332629 Z2 Hi Lo Flame and Fan Speed Switch Part Number P332631 SF SB Green and Red Lamps Part Number P332538 P3...

Page 24: ...n Blower Motor Part Number P332514 M1 Overheat Thermostat Part Number P332565 M2 Fan Thermostat Part Number P332496 Fan Blades 4 pieces Part Number P332572 Left P332638 Right M Fan Motor 2 Pieces Part...

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