Williams 7691, 7687, 7690, 7688, 7685 Instructions Manual

.................................................................................................

=_ INSTRUCTIONS _OR WILLIAMS GAS APPLIANCE

CONVERSION KITS 7685, 7687, 7688, 7690 & 7691

iil=Jl_' i=,t;tl=_;,},]il'ii n_!l NATURAL G_S TO LIQUID PROPANE GAS

THIS KIT IS FOR USE
WITH MODEL NUMBERS:

This conversion kit shall be installed by a qualified
service agency in accordance
manufacturer's instructions and all

applicable

codes and requirements of the authority having

jurisdiction. If the information in these instructions

is not followed exactly, a fire, explosion or
production of carbon monoxide may result, causing
property damage, personal injury or loss of life.
The qualified service agency is responsible for the
proper installation of this kit, The installation is not
proper and complete until the operation of the
converted appliance is checked as specified in the

manufacturer's instructions supplied with the kit,.

3508332; 3508732; 5008732;

5508332; 6_08732; 6008532

PPL!CATION: THESE CONVERSION KITS ARE USED ON

E FORSAIRE TOP VENT WALL FURNACES WHEN

I_QUIPPED WiTH NATURAL GAS VALVES;

P323209 (STANDING PILOT MODELS)

i P3232t0 (ELECTRONIC IGNITION MODELS)

with the WITHhOmm STAINLESS STEEL BURNER 12956

dONVERTtNG TO L P GAS

THIS K_ CONTAINS:

(1} CAP SCREW
(t) PRESSURE REGULATOR ADJUSTMENT SCREW

(t) SPR_NG (RED)
(3) CONVERSION LABELS
(1 OR 2) PILOT ORIRCES (LP. GAS')

(1 OR 2) BURNER ORIRCES (LP GAS)

{1) LPG. TAG
{1) "O" RING

_AUTION:THE GAS SUPPLY MUST BE

SHUTOFF PRIOR TO DISCONNECTING THE

ELECTRICAL POWER BEFORE PROCEEDING

WITH THE CONVERSION,

I,,

2.,

3.,

4_

5_

,.

7,,

8_,

9,,

10o
11_

12.

13

I4.
!5
16,

17.,

18.
19,

2&

CONVERSION INSTRUCTIONS - NATURAL GAS TO LP. GAS
Shut off gas to the furnace,
Shut off electric power to the furnace,
Disconnect gas supply linefrom control valve
Remove electronic ignition module (ifequipped).

CAUTION: Label all wires prior to disconnection for'proper reconnection,

STANDING PILOT MQDELS ONLY_ Disconnect (2) tw$ wires from terminal block on thermocouple
and (2) two wires from control valve.

Use a 7/16" open end wrench to remove outer end nuts rom burner wire hangers and swing them up to
drop burner down. '_

NOTE: On single burner models, (2) two sheet metal ;crews are used instead of end nuts°
Pull the burner and control assembly forward to free itfrom he rear burner support bracket,
Once removed, all work can be performed on work bench.
Use a 7/16" boxed end wrench and remove the burner orifice(s) from the manifold and replace with the orifice(s)
provided in thiskit. Refer to Figure 1 on page 2
Remove pilot orifice from pilot and replace with orifice prov_ed in this kit, Refer to Figure 2A or B on page 2.

Remove regulator cap screw and pressure regulator adjust!ng screw Refer to Figure 3 on page 2.
Remove the existing spring, i
insertthe replacement red spring. Refer to Figure 4 on pa{e 2_

Install the new plastic pressure regulator adjustment screw !Assure that the screw top is flush with the regulator

top. I
Turn pressure regulator adjustment screw clockwise efever_complete turns. The preliminary pressure setting

isapproximately I0.,5 in, w.c. for LP gas regulator and 4,0 i_. w,,c.,for natural gas regulator

J

Check the regulator setting using a manometer or by ctock_nnthe gas meter°

installthe new cap screw and O ring,
Reassemble the furnace by following the steps above in re{,erse order°
Use information from chart on page 3 to fill in blanks on sepplemental data label_ A_ach label permanently

adjacent to the rating plate on a cteer surface area° i
Leave these instructionswith the homeowner.

REV 6/00 P323213_A917 74 SHT 1 OF

,. I'_T NO.

7685

7657

7688

7690

769t

MODEL NOoON
RATINGPLATE

3508332
3508732

5008732
55O8332
6508332

6508732

6OO8532

FIGURE 5

CHART

TO BE USI_ ON CONVICTION LABEL

NEW MOD_

NO.

3508331

3508731
50(38731

5508331
6508331

6508731

6008531

PEW INPUT

BI'UtHR

35,(X)0

35,000

5O,000

55,000

65,000

65,000

7/8

- (_8)

_ DURNg_I

NEWHEATING

DAPACITY BTLt91R

2B,000
28,000
37,500
44,000
52,000
52,000

60,000 49,200

.r- 3/_2 (lo)

HONEYWELLP322.954(Q314}

(AFTER

CONVERSION)

i

OFJRCE

SIZE

#52

#52
#54
#54
#52

#52

#53

IMPORTANT: LABEL PLACEMENT

After conversion is completed, the large
conversion label provided in this kit must be
filled out completely (using chart
information). Attach small conversion label

to gas valve, and attach large data
conversion label to inside of casing door
next to rating plate° Remove "Natural Gas"

tag from burner and replace with "Liquid

Propane Gas" tag provided with this kit.
This is necessary to provide information for
future servicing. Failure to do so could

result in property damage, personal injury
or death.,

t

(,,25) (I S

ROBERTSHAW "_L-__._=

! P3226B0 _
I (AFTER

dONVERSION)

0£ BURNER

,

Refer to the Lighting and Operating Instruction Plate located in _ontrol area of furnace for instructions on lighting
the burner°

I

Any adjustments must be performed by a qualified service techr dcian only. Improper adjustments could result in
property damage, personal injuryor death., t

!

The following information is provided for use by a qualified servic_ technician.
With main burner in 0peration, check aii"pipe connections, pilot _jas tubin'g"and around pressure regulator for gas
leaks with a rich soap and water solution. Bubbles indicate gas t_akage. Never use a match or open flame totest

for leaks. Correct even the slightest leak at once before using fu!nace.

ADJUST PILOT BURNER

NOTE: Pilot gas may need adjustment depending on inlet

pressure, increase or decrease to obtain proper
setting,.

Pilot flame should surround 3f8 inch to 1/2 inch of the
therrnocouple or generator tip, To adjust, if needed, remove

pilot adjustment cap (do not lose gasket).

i. Remove screw cover over pilot adjusting screw,

2 insert small screwdriver. Adjust flame as needed°

Turn screw counterclockwise _ to increase
flame or clockwise _ to _ecrease flame

3o Turn thermostat to-highest setting. Main burner

should light quickly and smoothly. Turn thermostat
to lowest setting,. Main burner should go out. Pilot
should remain liL

4 Replace screw cover over pilot adjusting screw.

t

D[ANGER OF PROPERTY DAMAGE, BODILY
iNJURY OR DEATH,

L_uid Petroleum (L,P,) is heavier than air and it will

s_)ttle in any low area, including open depressions,
a_d it will remain there unless area is ventilated°

Nbver attempt startup of unit before thoroughly

v+ntilating area,

children, clothing, furniture and flammable

t

P323213,.'LA_l 7_74 SHT. 3 OF 4