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69-0624—2

J.H.  •  Rev. 9-94  •  ©Honeywell Inc. 1994  •  Form Number 69-0624—2

VR8300/VR8301

Continuous Pilot Combination

Gas Control

Application

These continuous pilot gas controls are used in gas-fired

appliances with capacities up to 200 cu ft/hour at 1 in. wc
pressure drop [5.7 cu m/hour at 0.25 kPa] on natural gas.
They include a manual valve, safety shutoff, single auto-
matic operators, and a pressure regulator. See Table 3 for
temperature ranges and regulator types.

BODY PATTERN: Straight-through body pattern.
INLET X OUTLET SIZES AVAILABLE: 1/2 x 1/2 in., 1/2 x

3/4 in., and 3/4 x 3/4 in. (factory-installed inlet flange).

ADAPTERS: Adapters available for 1/2 and 3/4 inch straight

and angle connections. Refer to Table 4.

ELECTRICAL RATINGS:

Voltage and Frequency: 24 Vac, 50/60 Hz.
Current Draw: 0.70A.

CAPACITY: See Table 1.

TABLE 1: CAPACITY OF VR8300/VR8301

Size

(Inlet x Outlet)

Capacity (at 1 in. wc

pressure drop)

a

Minimum

Regulated Capacity

Maximum

Regulated Capacity

1/2 x 1/2

180 cu ft/hr  

[5.1 cu m/hr]

30 cu ft/hr  

[0.8 cu m/hr]

225 cu ft/hr  

[6.4 cu m/hr]

1/2 x 3/4

190 cu ft/hr  

[5.4 cu m/hr]

30 cu ft/hr  

[0.8 cu m/hr]

290 cu ft/hr  

[8.2 cu m/hr]

3/4 x 3/4

200 cu ft/hr  

[5.7 cu m/hr]

30 cu ft/hr  

[0.8 cu m/hr]

300 cu ft/hr  

[8.5 cu m/hr]

a

Capacity based on 1000 Btu/cu ft, 0.64 specific gravity natural gas at 1 in. wc pressure drop [37.3 MJ/cu m, 0.64 specific
gravity natural gas at 0.25 kPa pressure drop.

Model Number

Ambient Temperature Range

Regulator Type

VR8300A

0° F to 175° F [-18° C to +79° C]

Standard-opening

VR8300C

0° F to 175° F [-18° C  to +79° C]

Step-opening

VR8300H

0° F to 175° F [-18° C  to +79° C]

Slow-opening

VR8300K

-40° F to 175° F [-40° C to +79° C]

Slow-opening

VR8300M

-40° F to 175° F [-40° C to +79° C]

Standard-opening

VR8300P

-40° F to 175° F [-40° C to +79° C]

Step-opening

VR8301

0° F to 175° F [-18° C to 79° C]

Standard-opening

TABLE 3—TEMPERATURE RANGES AND REGULATOR TYPES.

Use conversion factors in Table 2 to convert capacities

for other gasses.

TABLE 2—GAS CAPACITY

CONVERSION FACTORS.

Gas

Specific
Gravity

Multiply Listed

Capacity By

Manufactured

0.60

0.516

Mixed

0.70

0.765

Propane

1.53

1.62

TABLE 4—FLANGE PART NUMBERS.

Part Number

Inlet/Outlet

Pipe Size

Flange

Type

Without

Hex

Wrench

With  

Hex

Wrench

1/2 inch NPT

Straight

394599-6

393690-16

Elbow

394599-3

393690-13

3/4 inch NPT

Straight

394599-4

393690-14

Elbow

394599-5

393690-15

NOTE: Flange kits include one flange with attached O-ring

and fan mounting screw.

Summary of Contents for VR8300

Page 1: ... cu m hr 290 cu ft hr 8 2 cu m hr 3 4 x 3 4 200 cu ft hr 5 7 cu m hr 30 cu ft hr 0 8 cu m hr 300 cu ft hr 8 5 cu m hr a Capacity based on 1000 Btu cu ft 0 64 specific gravity natural gas at 1 in wc pressure drop 37 3 MJ cu m 0 64 specific gravity natural gas at 0 25 kPa pressure drop Model Number Ambient Temperature Range Regulator Type VR8300A 0 F to 175 F 18 C to 79 C Standard opening VR8300C 0 ...

Page 2: ...use a gas control set for natural gas on LP gas or a gas control set for LP gas on natural gas ToconvertagascontrolfromnaturalgastoLPgasorfrom LP gas to natural gas contact your Honeywell representative Standard orslow openinggascontrolsareconvertedfrom one gas to another with a conversion kit ordered separately Order part number 393691 to convert from natural to LP gas Order part number 394588 to...

Page 3: ...ontrol 0 90 degrees in any direction from the upright position of the gas control knob 2 Mount the gas control so gas flow is in the direction of the arrow on the bottom of the gas control 3 ThreadpipetheamountshowninTable5forinsertion into gas control IMPORTANT Donotthreadpipetoofar Valvedistortion or malfunction may result if the pipe is inserted too deeply into the gas control Refer to Fig 3 TA...

Page 4: ...INLET PRESSURE TAP PRESSURE REGULATOR ADJUSTMENT UNDER CAP SCREW PILOT OUTLET PILOT ADJUSTMENT UNDER CAP SCREW GAS CONTROL KNOB RED RESET BUTTON M1639C GAS CONTROL TIGHTEN NUT ONE TURN BEYOND FINGER TIGHT FITTING BREAKS OFF AND CLINCHES TUBING AS NUT IS TIGHTENED TO BURNER M3076A provided on the gas control Never use the old compres sion fitting because it may not provide a gas tight seal 4 Push t...

Page 5: ...NCE TERMINALS TH TR TH TR VR8300 TERMINALS HIGH LIMIT CONTROLLER POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED DO NOT JUMPER THESE TERMINALS THIS SHORTS VALVE COIL AND MAY BURN OUT ANTICIPATOR IN THERMOSTAT CONVENIENCE TERMINALS SERVE AS A TIE POINT ONLY THEY ARE NOT INTERNALLY WIRED TO THE CONTROL CIRCUIT OR TO GROUND OPTIONAL HIGH LIMIT 1 2 3 4 2 3 4 M8581 Fig 9 VR830...

Page 6: ...n a gas control GAS LEAK TEST 1 Paint all pipe connections upstream of the gas control with a rich soap and water solution Bubbles indicate a gas leak 2 If a gas leak is detected tighten the pipe connection CAUTION Stand clear while lighting main burner to prevent injury caused from hidden gas leaks that could cause flashback in the appliance vestibule 3 Light the main burner 4 With the main burne...

Page 7: ...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 be sure of 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 using a manometer at the inlet pressure tap I...

Page 8: ...l system The maintenance program should include regular check out of the gas control as outlined in Start up and Checkout section checkout the control system as described in the appliance manufacturers literature Maintenance frequency must be determined individually for each application Some considerations are Cyclingfrequency Appliancesthatmay cycle100 000 times annually should be checked monthly...

Page 9: ...ostat several degrees above room temperature 3 Use an ac voltmeter to measure the voltage across terminals TH and TR or MV PV and MV If a No voltage is present check the control circuit for proper operation b 24 Vac is present but first operator did not click open check for excessive inlet gas pressure If inlet gas pressure is correct replace the gas control 4 Measure the open and closed thermocou...

Page 10: ...gas 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 located 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 lig...

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