Honeywell
V400 AND V800
COMBINATION GAS CONTROLS
APPLICATION
V400 and V800 are used on gas fired standing pilot appliances with 30 mV thermocouple. These gas controls include a manual gas valve, safety shutoff, single millivoltage automatic operator, and pressure regulator, pilot gas filter and flow adjustment, pressure tapping, and thermocouple connector.
V400 is used on 120V systems. V800 is used on 24V systems. Refer to Table 1 for more specifications. Refer to Table 2 for available gas capacities.
V800 gas controls are available with 1/4 x 1/4 inch or 3/ 16 x 1/4 inch energy cut-off (ECO) quick-connects. With the connector, an ECO high limit can be connected into the power circuit. When the temperature at the ECO exceeds the high limit, a switch opens and de-energizes the power
unit and shuts off main burner and pilot gas flow. To restart system, pilot flame must be relit and gas control must be reset manually.
Power for the gas control and the control system is provided by a 30 mV thermocouple. We recommend the Q340 Thermocouple.
Replacement parts:
1.Energy cut off (ECO) connector: 392451-1
2.Pressure Regulators:
Standard opening pressure regulator: V5306A,B. Step opening pressure regulator: V5307A,B.
3. Valve Operators:
Line Voltage Operator: V404B.
Low Voltage Operator: V804B.
TABLE 1—MODEL SPECIFICATIONS.
MODEL NUMBER |
AMBIENT |
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PRESSURE |
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PRESSURE |
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SUFFIX LETTER |
TEMPERATURE RANGE |
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REGULATOR TYPE |
REGULATOR MODEL |
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A |
32° |
F to 175° |
F |
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Standard-Opening |
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V5306A |
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[0° |
C to 79° C] |
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C |
32° |
F to 175° |
F |
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Step-Opening |
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V5307A |
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[0° |
C to 79° C] |
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M |
-40° F to 175° F |
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Standard-Opening |
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V5306B |
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[-40° C to 79° |
C] |
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P |
-40° F to 175° F |
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Step-Opening |
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V5307B |
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[-40° C to 79° |
C] |
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TABLE 2—GAS CONTROL CAPACITIES. |
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GAS CONTROL |
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MAXIMUM |
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MINIMUM |
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PIPE SIZE |
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CAPACITYa AT |
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REGULATION |
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REGULATION |
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(INLET x |
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1 INCH WCPD |
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CAPACITY |
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CAPACITY |
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OUTLET) |
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ft3/hr |
m3/hr |
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ft3/hr |
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m3/hr |
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ft3/hr |
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m3/hr |
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1/2" x 3/8" |
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110 |
3.1 |
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110 |
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3.1 |
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11 |
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0.3 |
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1/2" x 1/2" |
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225 |
6.4 |
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225 |
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6.4 |
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23 |
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0.7 |
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1/2" x 3/4" |
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250 |
7.1 |
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290 |
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8.2 |
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23 |
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0.7 |
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3/4" x 3/4" |
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335 |
9.5 |
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425 |
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12.0 |
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34 |
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1.0 |
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aCapacity is based on 1000 Btu/ft3, 0.64 specific gravity natural gas at 1 inch wc pressure drop [37.3 MJ/m3, 0.64 specific gravity natural gas at 0.25 kPa pressure drop]. Use conversion factors to convert to other gases.
TYPE OF GAS |
SPECIFIC GRAVITY |
MULTIPLY LISTED CAPACITY BY: |
Manufactured |
0.60 |
0.516 |
Mixed |
0.70 |
0.765 |
Propane |
1.53 |
1.62 |
INSTALLATION
WHEN INSTALLING THIS PRODUCT…
1.Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.
2.Check the ratings given in these instructions and on the product to ensure the product is suitable for your application.
3.Ensure installer is a trained, experienced service technician.
4.After completing installation, use these instructions to check product operation.
J.A. |
Form Number 95-6996—10 |
Rev. 6-91 |
©Honeywell Inc. 1991 |
WARNING
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH
Follow these warnings exactly:
1.Disconnect power supply before wiring to prevent electrical shock or equipment damage.
2.To avoid dangerous accumulation of fuel gas, turn off gas supply at appliance service valve before starting installation and perform Gas Leak Test following installation.
3.Do not bend pilot gas tubing at control or at pilot burner after compression fitting is tightened. Gas leakage at the connection may result.
4.Always install sediment trap in gas supply line to prevent contamination of gas control.
5.Do not force gas control knob. Use only your hand to turn gas control knob. If the knob will not operate by hand, the control should be replaced by a qualified service technician. Force or attempted repair may result in fire or explosion.
CAUTION
Never apply a jumper across (or short) gas control coil terminals. This may burn out thermostat heat anticipator.
IMPORTANT
These gas controls are shipped with protective seals over inlet and outlet tappings. Do not remove seals until ready to connect piping.
Follow the appliance manufacturer’s instructions if available; otherwise, use the instructions provided below as a guide.
CHOOSE LOCATION
Do not locate the combination 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.
•Locate in a well ventilated area.
•Mount high enough above the cabinet bottom to avoid exposure to flooding or splashing water.
•Ensure the ambient temperature does not exceed the ambient temperature ratings for each component.
•Cover gas control if appliance is cleaned with water, steam, or chemicals or to avoid dust and grease accumulation.
•Avoid locating where exposure to corrosive chemical
fumes or dripping water are likely.
Mount combination gas control in the appliance vestibule on the gas manifold. In replacement applications, mount gas control in the same location as the old control.
INSTALL PIPING TO CONTROL
All piping must comply with local codes and ordinances or with National Fuel Gas Code (ANSI Z223.1 NFPA No. 54), whichever applies. Tubing installation must comply with approved standards and practices.
1.Use new, properly reamed pipe free from chips. If tubing is used, make sure ends are square, deburred, and clean. All tubing bends must be smooth and without deformation.
2.Run pipe or tubing to the control. If tubing is used, obtain a tube-to-pipe coupling to connect tubing to the
control.
3. Install sediment trap in gas supply line. Refer to Fig. 1.
INSTALL CONTROL
1.This control can be mounted 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 direction of arrow on bottom of control.
3.Thread pipe the amount shown in Table 3 for insertion into control. DO NOT THREAD PIPE TOO FAR. Valve distortion or malfunction may result if pipe is inserted too deeply.
DROP |
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HORIZONTAL |
PIPED |
GAS |
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GAS |
CONTROL |
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SUPPLY |
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RISER |
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GAS |
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CONTROL |
PIPED |
3 IN. |
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GAS |
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SUPPLY |
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(76 MM) |
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MINIMUM |
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2 |
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DROP |
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HORIZONTAL |
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3 IN. |
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TUBING |
(76 MM) |
1 |
GAS |
MINIMUM |
SUPPLY |
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2 |
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GAS CONTROL
RISER 
3 IN.
(76 MM)
MINIMUM
2
1ALL BENDS IN METALLIC TUBING SHOULD BE SMOOTH.
2CAUTION: 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. |
M3077 |
Fig. 1—Install sediment trap.
TABLE 3—NPT PIPE THREAD LENGTH (IN.).
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OVERALL |
MAXIMUM DEPTH PIPE |
PIPE |
THREAD |
CAN BE INSERTED |
SIZE |
LENGTH |
INTO CONTROL |
3/8 |
9/16 |
3/8 |
1/2 |
3/4 |
1/2 |
3/4 |
13/16 |
3/4 |
1 |
9/16 |
1 |
4.Apply moderate amount of good quality pipe compound to adapter, leaving two end threads bare. Refer to Fig. 2. (On LP gas installations, use compound resistant to LP gas.) Do not use Teflon tape.
5.Remove seals over control inlet and outlet, if neces-
sary.
6.Connect pipe to control inlet and outlet. To tighten inlet and outlet connections, use wrench on projecting wrench boss. Refer to Figs. 3 and 4.
2
TWO IMPERFECT |
GAS CONTROL |
THREADS |
PIPE |
THREAD PIPE THE AMOUNT |
APPLY A MODERATE AMOUNT OF |
SHOWN IN TABLE FOR |
PIPE COMPOUND TO PIPE ONLY |
INSERTION INTO GAS CONTROL |
(LEAVE TWO END THREADS BARE). |
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M3075B |
Fig. 2—Use moderate amount of pipe compound.
PRESSURE REGULATOR |
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INSTALL |
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ADJUSTMENT |
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LONG |
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(BENEATH COVER SCREW) |
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SCREW IN |
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MANUAL GAS |
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OUTSIDE |
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CORNER |
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CONTROL KNOB |
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WRENCH |
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STANDARD |
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BOSS |
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PRESSURE |
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OFF |
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ON |
REGULATOR |
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("A" MODEL) |
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INLET |
PILOT |
STEP OPENING |
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GAS |
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REGULATOR ("C" MODEL) |
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INLET |
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PILOT GAS OUTLET. |
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PRESSURE TAPPING |
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PILOTSTAT |
PILOT FLOW ADJ. SCREW DIRECTLY BENEATH |
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(BENEATH COVER SCREW) |
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POWER UNIT |
M17845 |
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Fig. 3—Top view of standard capacity gas control.
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 tubing. Do not bend tubing at control after compression nut has been tightened, as this may result in gas leakage at connection.
2.Square off and remove burrs from end of tubing.
3. Unscrew brass compression fitting from pilot gas outlet. Refer to Fig. 4. Slip fitting over tubing and slide out of way.
NOTE: When replacing a control, cut off old compression fitting and replace with new compression fitting provided on new combination gas control. Never use old compression fitting as it may not provide a gas-tight seal. Refer to Fig. 4.
4.Push tubing into pilot gas tapping on outlet end of the control until it bottoms. While holding tubing all the way in, slide fitting into place and engage threads. Turn until finger tight. Then tighten one more turn with wrench. Do not overtighten.
5.Connect other end of tubing to pilot burner according to pilot burner manufacturer’s instructions.
GAS CONTROL
TIGHTEN NUT ONE TURN
BEYOND FINGER TIGHT. TO PILOT
BURNER
FITTING BREAKS OFF AND CLINCHES |
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TUBING AS NUT IS TIGHTENED. |
M3076A |
Fig. 4—Always use new compression fitting.
CONNECT THERMOCOUPLE
The thermocouple connection to the power unit or ECO connector (Fig. 3) is an electrical connection and must be clean and dry. Never use pipe compound. Tighten only 1/4 turn beyond finger tight to give good electrical continuity.
CONNECT ECO (Standard-Capacity models only)
If the ECO is provided, the leadwires must be equipped with insulated 1/4 in. female quick-connect terminals. Leadwire lengths must not exceed the lengths shown in Tables 4 and 5. Connect high limit or ECO leadwires to the two terminals on the thermocouple.
If ECO is not provided, connect a Q313B Thermopile Generator in place of the thermocouple to act as the highlimit for the system.
TABLE 4—MAXIMUM LENGTH OF SUPPLEMENTARY LIMIT LEADWIRES WHEN USING Q340A THERMOCOUPLE.
THERMOCOUPLE |
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MAXIMUM LEADWIRE LENGTH X 2 (wires) |
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LENGTH |
AWG NO. 14 |
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AWG NO. 16 |
AWG NO. 18 |
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in. |
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m |
in. |
m |
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in. |
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m |
in. |
m |
18 |
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0.5 |
35 |
0.9 |
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22 |
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0.6 |
13 |
0.3 |
24 |
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0.6 |
29 |
0.7 |
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18 |
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0.5 |
11 |
0.3 |
30 |
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0.8 |
23 |
0.6 |
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15 |
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0.4 |
9 |
0.2 |
36 |
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0.9 |
17 |
0.4 |
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11 |
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0.3 |
6 |
0.2 |
48 |
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1.2 |
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DO NOT USE. |
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60 |
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1.5 |
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TABLE 5—MAXIMUM LENGTH OF SUPPLEMENTARY LIMIT LEADWIRE WHEN USING Q309A THERMOCOUPLE. |
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THERMOCOUPLE |
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MAXIMUM LEADWIRE LENGTH X 2 (wires) |
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LENGTH |
AWG NO. 14 |
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AWG NO. 16 |
AWG NO. 18 |
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in. |
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m |
in. |
m |
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in. |
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m |
in. |
m |
12 |
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0.3 |
47 |
1.2 |
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30 |
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0.8 |
18 |
0.5 |
18 |
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0.5 |
41 |
1.0 |
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26 |
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0.7 |
16 |
0.4 |
24 |
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0.6 |
35 |
0.9 |
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22 |
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0.6 |
14 |
0.4 |
30 |
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0.8 |
29 |
0.8 |
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18 |
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0.5 |
11 |
0.3 |
36 |
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0.9 |
23 |
0.6 |
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15 |
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0.4 |
9 |
0.2 |
40 |
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1.0 |
19 |
0.5 |
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12 |
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0.3 |
7 |
0.2 |
48 |
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1.2 |
11 |
0.3 |
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7 |
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0.2 |
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60 |
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1.5 |
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DO NOT USE. |
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3 |
95-6996—10 |
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