Honeywell Ventilation Hood V4297S User Manual

V4297S  
Normally Open Vent Valve  
PRODUCT DATA  
FEATURES  
Used with natural, manufactured, mixed or liquefied  
petroleum (LP) gases.  
V4297S valves are normally open valves to be used as  
vent valves in double block and bleed  
configurations.The gas flows through the vent  
connection when the valve is not energized.  
V4297S are used with 110/120Vac 50/60Hz  
controllers.  
Two valve body types (small and large)  
applicable to seven pipe sizes:  
Small body type for 3/4 in. (19 mm), 1 in. (25 mm),  
1-1/4 in. (32 mm), 1-1/2 in. (38 mm) and  
2 in. (51 mm) pipes.  
Large body type for 2 in. (51 mm),  
2-1/2 in. (64 mm) and 3 in. (76 mm) pipes.  
Small body has a 1 in. NPT threaded vent connection.  
Large body has a 1-1/4 in. NPT threaded vent  
connection.  
Two 1/4 in. NPT threaded pressure taps available for  
the small body valve, three for the large body valve.  
APPLICATION  
NEMA 1 enclosure standard.  
V4297S is not gas flow direction dependent. It can be  
connected either way in the valve train.  
The V4297S provides the vent function in a double block and  
bleed configuration. The valve is part of the Honeywell  
Integrated Valve Train System, which allows gas train  
components to be directly bolted together.  
Unpainted die-cast aluminum body.  
® U.S. Registered Trademark  
Copyright © 1999 Honeywell Inc.  
65-0244  
All Rights Reserved  
 
V4297S NORMALLY OPEN VENT VALVE  
2-3/8 (60)  
2 (51)  
1-15/16 (49)  
1/2  
(13)  
1-1/4  
(32)  
1-1/2  
(32)  
3/16 (5)  
1-1/4  
(32)  
1/2 (13)  
3/8 (10)  
2-5/8  
(69)  
3-1/8  
(79)  
3/8  
(10)  
9-1/2  
(241)  
1/2 (13)  
1 IN. NPT  
7/8 (22)  
2 (51)  
3/8 (10)  
(3 HOLES)  
4-1/8  
(105)  
M16464  
3-1/8 (79)  
5 (127)  
Fig. 2. Approximate dimensions of smaller V4297 NOVV in in. (mm).  
65-0244  
3
 
V4297S NORMALLY OPEN VENT VALVE  
2 (51)  
1-1/2  
(32)  
3/16 (5)  
1/2 (13)  
5/16 (8)  
2-5/8  
(69)  
3
(76)  
1-1/4 IN.  
NPT  
5/8  
(16)  
3/4  
(18)  
12-3/8  
(314)  
3/4  
(18)  
1 (25)  
2
(51)  
1-1/2  
(38)  
1/2 (13)  
(3 HOLES)  
3-1/8  
(79)  
4-1/2 (114)  
1/2 (13)  
M16465  
5 (127)  
8 (203)  
Fig. 3. Approximate dimensions of larger V4297 NOVV in in. (mm).  
Weight:  
V4297S small body: 5.5 lb (2.5 kg).  
V4297S large body: 9.5 lb (4.4 kg).  
Replacement Parts:  
BBA51316 Coil for small V4297S, complete with wiring box.  
BBA51317 Coil for large V4297S, complete with wiring box.  
Approvals:  
Underwriters Laboratories Inc.: Listed.  
Industrial Risk Insurers (formerly FIA): Acceptable.  
International Approval Services (IAS): Design Certified.  
65-0244  
4
 
V4297S NORMALLY OPEN VENT VALVE  
2. Check the power supply circuit to verify the voltage and  
frequency are the same as for the valve.  
3. See Fig. 5 for typical V4297S field wiring with the  
RM7800 Relay Module. Follow the burner manufacturer  
wiring diagram, when provided. Refer to the relay  
module wiring diagram for specific wiring terminal  
designations.  
INSTALLATION  
When Installing this product…  
1. Read these instructions carefully. Be sure to follow  
Warning information carefully.  
2. Check the ratings given in the instructions and on the  
product to make sure the product is suitable for your  
application.  
4. Make wiring connections at the electrical terminations  
provided in the valve wiring compartment.  
3. Installer must be a trained, experienced flame  
safeguard control technician.  
4. After installation is complete, check out product  
operation as provided in these instructions.  
GROUND  
G
NEUTRAL  
L2  
WARNING  
LINE  
VOLTAGE  
4
Explosion Hazard And Electrical Shock Hazard.  
Can cause explosion, serious injury or death.  
Turn off gas supply before starting installation.  
Disconnect power supply before beginning installation.  
More than one disconnection can be involved.  
V4297S  
N
120 Vac  
Mounting  
MAIN VALVE  
L
Refer to the Integrated Valve Train Installation Instructions,  
form 66-1099, for instructions on mounting a V4297S  
between two Safety Shutoff valves.  
9
RM7800  
(TYPICAL)  
M16463  
WIRING  
Fig. 5.Typical wiring diagram for V4297 NOVV.  
OPERATION AND CHECKOUT  
Operation  
1. Make sure that all wiring agrees with all applicable local  
codes, ordinances and regulations. An opening is  
provided to accommodate rigid conduit or armored  
cable for line voltage operation (see Fig. 4).  
The V4297S is a normally open valve. The valve closes when  
it is energized, and opens when the power is removed. It  
provides the vent function in a double block and bleed  
application. The V4297S is open when the two Safety Shutoff  
Valves (SSOV) are closed, and is closed when the two SSOV  
are open.  
Checkout  
WARNING  
Explosion Hazard And Electrical Shock Hazard.  
Can cause explosion, serious injury or death.  
1. Do not put the system into service until you have  
satisfactorily completed the following Valve Leak  
Test, all applicable tests described in the Checkout  
section of the instructions for the flame safeguard  
control, and any other tests required by the burner  
manufacturer.  
2. All tests must be performed by a trained,  
experienced, flame safeguard control technician.  
3. Close all manual fuel shutoff valves as soon as  
trouble occurs.  
Fig. 4. Wiring compartment of V4297 NOVV.  
After the installation is completed, cycle the valve several  
times with the manual fuel shutoff cock closed. Make sure the  
valve functions properly. Also perform the Valve Leak Test  
before putting the valve into service.  
65-0244  
5
 
V4297S NORMALLY OPEN VENT VALVE  
Valve Leak Test  
SERVICE INFORMATION  
This is a test for checking the closure tightness of the gas  
valve. It should be performed only by trained, experienced,  
flame safeguard control technicians during the initial startup  
of the burner system, or whenever the valve is replaced.  
1. Energize the V4297S to close the vent connection.  
2. Close the manual gas cock downstream of the second  
Safety Shutoff Valve (SSOV).  
WARNING  
Explosion and Electrical Shock Hazard.  
Can cause explosion, serious injury or death.  
1. Turn off the gas supply and disconnect all electrical  
power to the valve before servicing.  
3. Turn on main gas and make sure the gas reaches the  
V4297S (energize the first SSOV).  
4. Check the V4297S for gas leaks using a gas leak  
detector or a soap solution.  
IMPORTANT  
Only trained, experienced flame safeguard control  
technicians should attempt to service or repair flame  
safeguard controls and burner assemblies.  
TROUBLESHOOTING  
Scheduled Inspection and Maintenance  
Set up and follow a schedule for periodic inspection and  
maintenance, including the burner, all other controls, and the  
valve(s). It is recommended that the valve leak test in the  
Checkout section be included in this schedule. Refer to the  
instructions for the primary safety control(s) for more  
inspection and maintenance information.  
WARNING  
Electrical Shock Hazard.  
Can cause serious injury or death.  
Use extreme caution while troubleshooting; line  
voltage is present.  
IMPORTANT  
Do not replace the valve until all other sources of  
trouble are eliminated.  
Troubleshooting Procedure  
If the valve does not close when the thermostat or controller  
is calling for heat:  
1. Check for line voltage at the valve lead wires or terminal  
block.  
2. If there is no voltage at the valve lead wires or terminal  
block, make sure:  
a. line voltage power is connected to the master  
switch;  
b. master switch is closed and overload protection  
(circuit breaker, fuse or similar device) has not  
opened the power line.  
3. If there is still no voltage at the valve lead wires or  
terminal block, make sure all appropriate contacts in the  
thermostat or controller, limits and flame safeguard  
controls are closed. If one or more are open, determine  
the cause(s); correct the trouble, and proceed.  
4. If there is proper voltage at the valve but the valve still  
does not close, check for normal gas pressure.  
5. If the valve still does not close, replace the valve.  
If the valve does not open when one or more of the  
appropriate contacts in the thermostat, controller, limits or  
flame safeguard control is open:  
1. Make sure the valve is wired in the correct circuit.  
2. Open the master switch to remove power from the  
valve.  
3. If the valve opens now, check the wiring for the valve  
and correct the wiring as necessary.  
4. Check for a short in the electrical circuit and repair it as  
necessary.  
65-0244  
6
 
65-0244  
7
 
Home and Building Control  
Honeywell Inc.  
Honeywell Plaza  
P.O. Box 524  
Minneapolis MN 55408-0524  
Home and Building Control  
Honeywell Limited-Honeywell Limitée  
155 Gordon Baker Road  
North York, Ontario  
Honeywell Asia Pacific Inc.  
Room 3213-3225  
Sun Hung Kai Centre  
No. 30 Harbour Road  
Wanchai  
M2H 3N7  
Hong Kong  
Honeywell Europe S.A.  
3 Avenue du Bourget  
1140 Brussels  
Honeywell Latin American Region  
480 Sawgrass Corporate Parkway  
Suite 200  
Belgium  
Sunrise FL 33325  
Printed in U.S.A. on recycled  
paper containing at least 10%  
post-consumer paper fibers.  
 
65-0244 G.R. 6-99  

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