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V8200 COMBINATION GAS CONTROLS

68-0045—3

6

Install Gas Control

1.

Mount the gas control 0-90 degrees, in any direction, 
from the upright position of the gas control knob, 

including vertically.

2.

Mount the control so gas flow is in the direction of the 
arrow on the bottom of the gas control.

3.

Thread pipe the amount shown in Table 4 for insertion 

into the gas control. Do not thread pipe too far. Valve 
distortion or malfunction may result if the pipe is 

inserted too deeply into the gas control.

4.

Apply a moderate amount of good quality pipe 
compound (DO NOT use Teflon tape) to pipe only, 

leaving two end threads bare. On LP installations, use 

compound resistant to LP gas.

5.

Remove seals over gas control inlet and outlet if 

necessary.

6.

Connect pipe to gas control inlet and outlet. Use wrench 
on the square ends of the gas control. If an adapter is 

used, place wrench on adapter rather than gas control. 

Refer to Figs. 2 and 7.

Fig. 5. Install sediment trap.

Fig. 6. Use moderate amounts of pipe compound.

Table 4. NPT Pipe Thread Length in inches.

Connect Pilot Gas Tubing

1.

Cut tubing to desired length and bend as necessary 

for routing to pilot burner. Do not make sharp bends or 
deform the tubing. Do not bend tubing at gas control or 

pilot burner after compression fitting has been 

tightened, as this may result in gas leakage at the 
connection.

2.

Square off and remove burrs from end of tubing.

3.

Unscrew compression fitting from the pilot outlet 
(Fig. 2). Slip the compression fitting over the tubing 

and slide out of the way.

NOTE: When replacing a gas control, cut off old 

compression fitting and replace with the new 

compression fitting provided on the gas control. 
Never use the old compression fitting as it may 

not provide a gas-tight seal.

4.

Push tubing into the pilot gas tapping on the outlet 

end of the control until it bottoms. While holding 

tubing all the way in, slide compression fitting into 
place and engage threads—turn until finger tight. Then 

tighten one more turn with wrench. Do not overtighten. 

Refer to Fig. 8.

5.

Connect other end of tubing to pilot burner according to 

pilot burner manufacturer’s instructions.

GAS
CONTROL

GAS
CONTROL

HORIZONTAL

DROP

PIPED
GAS
SUPPLY

PIPED
GAS
SUPPLY

3 IN.

(76 MM)

MINIMUM

3 IN.

(76 MM)

MINIMUM

RISER

GAS
CONTROL

TUBING
GAS
SUPPLY

HORIZONTAL

DROP

3 IN.

(76 MM)

MINIMUM

RISER

M3077

2

1

2

2

1

2

ALL BENDS IN METALLIC TUBING SHOULD BE SMOOTH.

CAUTION:  SHUT OFF THE MAIN GAS SUPPLY BEFORE REMOVING
END CAP TO PREVENT GAS FROM FILLING THE WORK AREA.  TEST 
FOR GAS LEAKAGE WHEN INSTALLATION IS COMPLETE.

Pipe Size

Thread Pipe 

This Amount

Maximum Depth Pipe Can Be 

Inserted Into Control

3/8

9/16

3/8

1/2

3/4

1/2

3/4

13/16

3/4

TWO IMPERFECT 
THREADS

GAS CONTROL

THREAD PIPE THE AMOUNT 
SHOWN IN TABLE FOR 
INSERTION INTO GAS CONTROL 

APPLY A MODERATE AMOUNT OF
PIPE COMPOUND TO PIPE ONLY
(LEAVE TWO END THREADS BARE).

M3075B

PIPE

Summary of Contents for V8200

Page 1: ...ize Straight through body pattern right angle adapters available for inlet and outlet 1 2 inch inlet and 1 2 inch outlet adapters available for 3 8 or 3 4 inch inlet or outlet Adjustable servo regulator effectively maintains almost constant gas output pressure under wide fluctuations in gas supply pressure Factory setting does not need readjustment for specific rating of furnace Inlet and outlet s...

Page 2: ...0A7001 include an ECO connector Part No 394332 that has two 1 4 inch quick connect terminals Electrical Ratings Supply Voltage 24 Vac 60 Hz Power Unit Hold in current 300 mA maximum Drop out current 250 to 90 mA Thermocouple Nominal output 30 mV 0 018 ohms Open Circuit Turndown Voltage 2 mV Electrical Connections 1 4 inch male quick connects Two convenience terminals on top of control optional Ter...

Page 3: ...nge Kits include one flange with attached O ring four mounting screws 9 64 inch hex wrench and instruction sheet Pressure Rating AGA rating 1 2 psi 3 5 kPa inlet pressure Pressure Regulation See Table 1 Regulator adjustment accessible from top of gas control Mounting Can be mounted 0 to 90 degrees in any direction from the upright position of the manual gas control knob including vertically Temper...

Page 4: ...ce manufacturer s instructions if available otherwise use the instructions provided below Convert Between Natural and LP Gas WARNING Fire or Explosion Hazard Can cause serious injury death or property damage 1 Do not use a gas control set for natural gas on an LP gas system or a gas control set for LP gas on natural gas system 2 When making conversion main pilot burner orifices MUST be changed to ...

Page 5: ...s the overall length of the gas control Fig 4 Install flange to gas control Choose Gas Control Location Do not locate the gas control where it may be affected by steam cleaning high humidity dripping water corrosive chemicals dust or grease accumulation or excessive heat To ensure proper operation follow these guidelines 1 Locate gas control in a well ventilated area 2 Mount gas control high enoug...

Page 6: ...the connection 2 Square off and remove burrs from end of tubing 3 Unscrew compression fitting from the pilot outlet Fig 2 Slip the compression fitting over the tubing and slide out of the way NOTE When replacing a gas control cut off old compression fitting and replace with the new compression fitting provided on the gas control Never use the old compression fitting as it may not provide a gas tig...

Page 7: ...Never use pipe compound Tighten only 1 4 turn beyond finger tight to give good electrical continuity Do not overtighten Fig 9 Installing thermocouple and optional ECO connector to the power unit APPLY WRENCH FROM TOP OR BOTTOM OF GAS CONTROL TO EITHER SHADED AREA WHEN FLANGE IS NOT USED APPLY WRENCH TO FLANGE ONLY WHEN FLANGE IS USED M3079 GAS CONTROL TIGHTEN NUT ONE TURN BEYOND FINGER TIGHT FITTI...

Page 8: ... terminals on the ECO connector Table 5 Maximum Length of Supplementary Limit Leadwires when using Q340A Thermocouple Table 6 Maximum Length of Supplementary Limit Leadwires when using Q309A Thermocouple L1 HOT L2 1 24V THERMOSTAT OPTIONAL CONVENIENCE TERMINALS TH TR TH TR GAS CONTROL TERMINALS HIGH LIMIT CONTROLLER POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED DO NOT J...

Page 9: ...which could cause flashback in the appliance vestibule Light the main burner 4 With the main burner in operation paint all pipe joints including adapters and gas control inlet and outlet with rich soap and water solution 5 If a gas leak is detected tighten adapter screws joints and pipe connections 6 Replace the part if gas leak can not be stopped Light the Pilot Burner Flame 1 Turn the gas contro...

Page 10: ...e pressure regulator adjustment cap and screw b Using a screwdriver turn the inner adjustment screw clockwise to increase or counterclockwise to decrease the main burner gas pressure c Always replace the cap screw and tighten firmly to ensure proper operation 4 If the desired outlet gas pressure or gas flow rate cannot be achieved by adjusting the gas control check the gas control inlet pressure u...

Page 11: ...em The maintenance program should include regular checkout of the gas control as outlined under Startup and Checkout and the control system as described in the appliance manufacturer s literature Maintenance frequency must be determined individually for each application Some considerations are Cycling frequency Appliances that may cycle 100 000 times annually should be checked monthly Intermittent...

Page 12: ... valve diaphragm spring pressure and the lack of outlet pressure hold the automatic valve firmly closed blocking main burner gas flow When Thermostat Calls for Heat The gas control allows pilot and main burner gas flow during the thermostat ON cycle as shown in Fig 13 When the thermostat calls for heat the magnetic valve operator is energized and lifts the automatic operator valve disc off its sea...

Page 13: ...er may relight at the full flow rate Slow Opening Pressure Regulation V8200H Slow opening gas controls function the same as standard models except that when the thermostat calls for heat the automatic valve opens gradually Opening is slowed because a gas flow restrictor in the passage from the automatic operator slows the rate at which gas pressure is reduced under the automatic valve diaphragm af...

Page 14: ... thermocouple current drops and the power unit drops out closing the safety shutoff valve When pilot flame goes out When pilot flame goes out or is too small to reliably light the main burner thermocouple output drops below the power unit hold in value The power unit drops out closing the safety valve and stopping all gas flow through the control With the loss of outlet pressure the automatic valv...

Page 15: ...istance If above 11 ohms replace the gas control If the Main Burner Will Not Come On With a Call for Heat 1 Ensure the gas control knob is in the ON position 2 Adjust the thermostat several degrees above room temperature 3 Use an ac voltmeter to measure the voltage across terminals TH and TR If a No voltage is present check the control circuit for proper operation b 24 Vac is present but first ope...

Page 16: ... continue with the next step 6 Remove the pilot burner access panel located below and behind the gas control 7 Find the pilot burner by following the metal tube from the gas control The pilot burner is between the two burner tubes behind the pilot burner access panel 8 Turn the gas control knob counterclockwise to PILOT 9 Push and hold the gas control knob all the way in Immediately light the pilo...

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