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Williams 1773512 - page 1
Installation Instructions and Owner’s Manual Direct-Vent Wall Furnace - Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. - WHAT TO DO IF YOU SMELL GA S • Open all windows. • Do not try to light any appliance. • Do not touch any electrical switch. • Do not use any phone in y ...
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Williams 1773512 - page 2
Table of Contents General Information a nd Technical Data This furnace is design certif ied to ANSI Z21.86-2004 / CSA 2.32-2004 Gas–Fire d Gravity and Fan-Type, Direct -Vent Wall Furnaces as a Fan-Type Direct-Vent Wa ll Furnace to be inst alled on an outsi de wall according to these in structions. Any alteration of the original design, installed ...
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Williams 1773512 - page 3
2 Safety Rules and General Warnings DO NOT OPERATE THIS FURNACE WITHOUT FRONT PANEL INSTALLE D • Due to high temperatures, the furnace should be located out of traffic and away from any combustible materials such as furniture and draperies. • Children and adults sho uld be alerted to the hazards of high surface temperatures a nd should stay awa ...
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Williams 1773512 - page 4
Some Points to Remember • Learn to recognize the odor of LP Gas. Your local LP Gas dealer can give you a ”Scratch and Sniff” pa mphlet. Use it to find out what the propane odor smells like. If you suspect that your LP Gas has a weak or abnorm al odor, call your LP Gas dealer. • If you are not qualified, do not light pilot lights, perform se ...
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Williams 1773512 - page 5
Installation Installation should be done by a QUALIFIED SERVICE TECHNICIAN. The furnace must be located on an outs ide wall. Wall Installation 4 Minimum clearances from combustible materials: WARNING: For the installati on of this furnace, the following items must be used in the vent air intake system: • Unit to the top surface of carpeting, tile ...
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Williams 1773512 - page 6
5 A. Clearance above grade, verand a, porch, deck or balcony 12-inches (30 cm ) minimum. (3) B. Clearance to window or do or that may be opened 12- inches (30 cm) minimum. (3) C. Clearance to permane ntly closed window minimum 12- inches (30 cm) recomme nded to prevent condensation on wind ow. D. Vertical clearance to ventilated soffit located abov ...
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Williams 1773512 - page 7
6 5. Install the supporting bracket to the wall; insert the air pipe in the wall through the hole provided in the support bracket . Place the round adhesive gasket around the hole so that the air pipe rem ains in position. (Figure 3) 6. Attach the supporting bracket with the screws. If possibl e use self-tapping scre ws. If self -tapping screws can ...
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Williams 1773512 - page 8
7 12. Remove the vent cap an d drill all the necessary holes (diame ter ¼ inch for the screw fittings provided with th e furnace). 13. Relocate the vent cap and attach it with the screws. (Figure 7) 14. Attach the female end of the three-prong cord to t he receptacle lo cated near the bottom of the furnace. 15. Connect the gas supply line. A gas s ...
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Williams 1773512 - page 9
8 ressure at the correct value Gas Conversions Converting to another gas type mu st be performed by a qualified service technician. If the type of the gas supplied to the dwelling is not the same type as your furnace (natural or LPG gas), it must be converted. It will be necessary to do the following: 1. Change nozzle. a. Remove the screw indicated ...
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Williams 1773512 - page 10
9 Gas Supply Check all local codes for requirements, esp ecially for the size and type of gas supply line required. On natural gas line s less than 15” (380 mm) long, use 1/2” tube; on longer runs, use 3/4” iro n tube or equal. On LP Gas lines please consult LP Gas supplier. Installing a New Main Gas Shutoff Valve Each furnace should have its ...
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Williams 1773512 - page 11
10 First Firing the Furnace Start the furnace following the instructions given in the “Opera ting Instructions”. The first lighting may be difficult becaus e of the air trapped in the gas line s. During initial firing of the fu rnace, resi dual manufacturing grease will bake out and smoke will occur which is not a health dan ger. To prevent nui ...
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Williams 1773512 - page 12
11 Electrical Wiring Diagram Key: EV, EV1 Gas Valve 1 (Safety S hutter) Vanne Gas 1 (Securite’) lamme ermostat ffe 0 size – 4A mbustion 2 pcs) p) ) V itch e’ - Hiver sse Ventil. re EV2 Hi-Lo Flame Operator O perateur Haute-Basse F M Fan Motor Moteur du Ventilateur M1 Overhe at Th Thermostat de Surchau M2 Fan Thermostat Thermostat de Ventilati ...
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Williams 1773512 - page 13
12 Operating Instructions Before operating the furnace, re fety information in this manual . ad carefully all wa rnings and sa A. Thi s appli ance do es not hav e a pil o t whic h m ust Fol l ow the gas suppli er' s instr uct ion s. be li ght ed by m eans of t he pi ezo i gni t er i nstal l ed - I f you c annot reach y our gas suppli er , c al ...
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Williams 1773512 - page 14
13 WHA T TO DO IF T HE RED LA MP I S LIT Thi s appl i ance has an el ect roni c f lam e superv i si on dev ic e. I f t he f lam e di sappears the gas f l ow w ill b e a uto matic ally shut of f and the red l am p wil l l i ght inst ead of t he green one. T he appl i anc e w ill a ttemp t to re ligh t if yo u d o ONE of the f oll owing: A. B. Turn t ...
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Williams 1773512 - page 15
14 Servicing All servicing activities must be performed by a qualified se rv ice t chnicia n or a service agency. The hom e owner may not e hecking and Adjusting the Gas Manifold Pressure manifold pressures as shown in “Technical Data”. It is roceed as follows: the HI mode. g scre w “C” (pressure regulator) to t he value given in “Technic ...
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Williams 1773512 - page 16
Annual Maintenance Requirements 1. Clean fan blades. 2. Clean air blower. 3. Check and clean sili cone red pipes. 4. Check air flow switch. 5. Clean and check exhaust flue pipe a nd air intake pipe. Check red O-Ring G asket (NRNG003). If it is damaged, replace it. 6. Check for ga s leaks on all conne ctions. 7. Check and adjust gas pre ssure. 15 Ga ...
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Williams 1773512 - page 17
16 Programmable Timer The programmable timer allows precise operating an d timing control and is standard on thi s furnace. (Figure 10) Overview The programmable timer has the following feature s: • Long life lithium battery • Daily and weekly programs • One minute minimum switching time • Quick progressi on • Sixteen programs (8 on and 8 ...
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Williams 1773512 - page 18
17 Setting and Adjustment 1 2 3 4 5 6 7 0 :00 1 2 3 4 5 6 7 E EE 1 2 3 4 5 6 7 0 :00 1 2 3 4 5 6 7 0 :00 1 2 3 4 5 6 7 0 :00 ☼ 1 Initial Conditions A. Set the Setting/Regulator switch (Figure 10-B) in RUN position (ce nter). Press the Reset button R. The display will flash. B. With the Setting/Regulator switch sele ctor in pos ...
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Williams 1773512 - page 19
18 D. Press the Day Setting, (1……7, Figure 11-D) bu tton to program another day or block of days. E. To set further programs repeat steps item B through D above. NOTE: When the same ON and O FF times are desired for different days of the week, the setting procedu re may be simplified. • 1-2-3-4-5 (from Monday through Friday) • 1-2-3-4-5-6 ( ...
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Williams 1773512 - page 20
19 Troubleshooting Starting Sequence (Electrical) Step 1 1. Check L1 – L2 (Supply 120 V, 60 Hz) 2. Check M9 (Main fuse) Troubleshooting Step 1 Point 1 (L1-L2) No voltage (120 V). Check the electrical supply line, wirin g and connectio ns. Point 2 (M9) Fuse damaged. Check the electrical supply line and repla ce the fuse. Summer Mode Step 2 3. Chec ...
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Williams 1773512 - page 21
20 Troubleshooting Step 3 Point 5 (Z1) Z1 is open and no ignition. Check wiring and conn ections. If everything is okay, replace the switch. Point 7 (M2) M2 is closed and fan thermostat temperature is lower than 104 °F. Check wiring and co nnections. If they are okay, replace the thermostat. Step 4 8. Check Z9 (Room thermostat). Cl ose the thermos ...
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Williams 1773512 - page 22
21 Point 13 (TR) No inlet voltage (120 V). Check 5 pole conne ctor and control box. If everything is okay, first replace the connector and then the control box if problem rem ains. No outlet voltage (24 V) during ignition. Check wiring and conn ections. If everything is okay, replace the transformer. Point 14 (EV1) Valve closed during ignition. Che ...
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Williams 1773512 - page 23
22 Replacement Parts TR – 120/24V Transforme r Part Number: JTRS017 Ignition Control Box Part Number: JCNT019 NP – Pressure Switch Part Number: JPRS010 Z9 – Room Thermostat Part Number: JTLT005 Z1 – Reset and Summer/Winter Switch Part Number: NTST000 Z8-Z3 – Timer and Manual - Program Mode Switch Part Number: N19800202 Z2- Hi-Lo Flame and ...
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Williams 1773512 - page 24
23 RP8 : Flame Sensor Part Number:JLTT015 RP7: Spark Igniter (2 piec es) Part Number: JLTT023 S – Combustion Blower Motor Part Number: JMTR017 M1 – Overheat Thermostat Part Number: JTLT006 M2 - Fan Thermostat Part Number:J12301 018 Fan Blades (4 piec es) Part Number: VVNT003-VVNT002 M - Fan Motor Part Number: (2 Pieces) JMTR018 Williams Furnace ...
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