Honeywell Blood Pressure Monitor L404F User Manual

L404F,T,V  
PressureTrol Controllers  
®
PRODUCT DATA  
FEATURES  
Models available in a series of control ranges, and  
pressure scales in kPa and psi.  
All models automatically reset and have an adjustable  
differential.  
Models have snap switch to open or close a circuit on  
a pressure rise.  
Case has a clear plastic cover so setpoints can be  
observed.  
1/4 inch—18 NPT connection for pipe on diaphragm  
assembly.  
Ground screw terminal.  
L404F:  
Controllers may be used with steam, air, or  
noncombustible gases, or fluids noncorrosive to the  
pressure sensing element.  
L404T:  
High pressure limits, break a circuit on oil pressure  
rise above setpoint.  
L404V:  
Low pressure limits, makes a circuit on oil pressure  
rise above setpoint.  
APPLICATION  
®
L404F PressureTrol Controllers provide operating control  
with automatic limit protection for pressure systems of up to  
2070 kPa, or 300 psi.  
®
L404T,V PressureTrol Controllers are for use on oil burner  
systems for pressures up to 1035 kPa or 150 psi.  
Contents  
Ordering Information ........................................................  
2
71-2429-06  
 
   
®
L404F,T,V PRESSURETROL CONTROLLERS  
Table 2. Conversion Table.  
Operating Range Conversions  
kPa  
Subtractive Differential Conversions  
2
2
kg/cm  
0.1 to 1.05  
psi  
kg/cm  
kPa  
15 to 40  
psi  
15 to 100  
35 to 350  
2 to 15  
5 to 50  
0.15 to 0.4  
0.4 to 1.0  
0.7 to 1.6  
1.5 to 3.5  
2 to 6  
0.4 to 3.5  
0.7 to 10.0  
1.5 to 20.0  
40 to 100  
70 to 150  
150 to 300  
6 to 14  
10 to 22  
20 to 50  
70 to 1035  
140 to 2070  
10 to 150  
20 to 300  
Table 3. Switch Ratings (Amperes).  
Switch State 120 Vac 240 Vac  
Switching Action: Snap switch breaks R-B (closes R-W) on  
pressure rise. Make-on-rise devices omit terminal B.  
Full Load  
8.0  
5.1  
Grounding Means: Ground screw terminal marked with a  
circled ground symbol.  
Locked Rotor  
48.0  
30.6  
Accessories:  
Pressure Sensing Element: Stainless steel diaphragm (140  
50024585-001 Brass Steam Trap. (Please refer to the applica-  
ble Equipment/Application Standards for compliance.)  
14026 Steel Steam Trap. (Please refer to the applicable Equip-  
ment/Application Standards for compliance.)  
to 2070 kPa models) has brass bellows.  
Maximum Ambient Temperature: 66°C (150°F). Also, refer  
to note under Mounting.  
118023 Steel Steam Trap for BSPT Models.  
33312B Knurled Knob—fits on top of adjusting screws.  
4074BWJ Range Stop—range stop screw, Part No. 107194,  
and wrench, Part No. 23466, to limit setpoint range.  
Adjustment Means: Screws on top of control case. Scales are  
marked in psi or kPa.  
Mounting Means: 1/4 inch-18 NPT connection on diaphragm  
Approvals:  
assembly; or surface mounts using holes in back of case.  
Underwriters Laboratories Inc. Listed: file no. MP466, vol. 10,  
guide no. MBPR.  
Canadian Standard Association certified: file no. LR1620,  
Dimensions: See Fig. 1.  
guide no. 400E-0.  
4-1/2 (115)  
1
4-11/32 (111)  
3-1/4 (83)  
2-3/4 (70)  
1-61/64 (50)  
1-15/16 (49)  
DIFFERENIAL  
ADJUSTMENT  
SCREW  
MAIN SCALE  
ADJUSTMENT  
SCREW  
3/16 X 11/32  
(5 X 9)  
KNOCKOUT  
DIMENSION  
"A"  
(SEE TAB)  
3-3/4  
(95)  
3-7/8  
(99)  
HOLE FOR  
1/2 INCH  
CONDUIT  
1-3/16  
(30)  
PSI  
RANGE  
2 TO 15  
DIMENSION  
"A"  
123  
126  
126  
146  
5 TO 50  
1-13/16  
(46)  
10 TO 150  
20 TO 300  
13/16 (21)  
CLEAR  
PLASTIC  
COVER  
2-1/8 (54)  
1-1/16 (27)  
1-1/2 (38)  
1/4 –18 NPT  
1
1
15 TO 100 kPa (2 TO 15 PSI) SCALE MODELS ONLY.  
M19635B  
Fig. 1. L404F,T,V approximate dimensions in inches (millimeters in parentheses).  
3
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®
L404F,T,V PRESSURETROL CONTROLLERS  
Pressure Gauge Mounting  
INSTALLATION  
To mount beside a pressure gauge, remove the gauge, and  
install in its place the steam trap with a tee on top. Mount the  
®
When Installing This Product…  
PressureTrol unit and pressure gauge on the side of the tee  
1. Read these instructions carefully. Failure to follow them  
could damage the product or cause a hazardous  
condition.  
by means of nipples and elbows (see Fig. 2).  
Remote Mounting  
Excessive vibration at the boiler may affect the operation of the  
L404F. In these cases, the L404F should be remotely located,  
subject to the following:  
2. Check on the ratings given in the instructions and  
marked on the product to make sure the product is  
suitable for your application.  
3. Installer must be a trained, experienced service  
technician.  
1. All piping must be suitable and properly pitched to drain  
all condensation back to the boiler.  
2. The remote mounting must be solid.  
4. After installation is complete, check out the product  
operation as provided in these instructions.  
3. A steam trap must be used at one end of the piping.  
IMPORTANT  
When making pipe connections, use pipe dope  
sparingly to seal the joints; any excess dope may clog  
the small hole in the fitting and prevent the controller  
from operating properly.  
Boiler Mounting  
If it is not convenient to mount the L404F adjacent to the  
pressure gauge, install a steam trap at the location  
recommended by the boiler manufacturer, then screw the  
device directly to the steam trap.  
Location and Mounting (L404F)  
Locate the L404F where the ambient temperature will not  
exceed 66°C (150°F). The L404F can be mounted near the  
pressure gauge, at a remote location, in a fitting provided by  
the boiler manufacturer, or in a special mounting on low water  
cutoffs. The L404F should always be mounted above the water  
line in steam boiler applications.  
Location and Mounting (L404T,V)  
Location  
NOTE: For most accurate operation, supplemental heat  
should be added to installations where the  
NOTE: For accurate operation, supplemental heat should be  
added to installations where temperatures fall below  
-29°C (-20°F).  
temperature falls below -20°F (-29°C).These  
controllers can be mounted at any location in the oil  
supply line, depending on the application. Typical  
locations are shown in Fig. 3. The low oil pressure  
controller should be located upstream from the safety  
shutoff valve(s). In a downstream location, there  
would be zero pressure when the burner is not  
running and the safety shutoff valve(s) is (are) closed.  
This could prevent startup or require manual reset  
every time the burner is started. The high oil pressure  
controller should be located as near to the burner as  
possible.  
A steam trap must be connected between the L404F and the  
boiler (see Fig. 2) to prevent boiler scale and corrosive vapors  
from attacking the elbows or diaphragm.  
PRESSURE  
GAUGE  
PRESSURE  
CONTROLLER  
Mounting  
TEE  
Mount the oil pressure controller directly on the main pipe.  
Insert a tee in the pipe line, and connect a pipe nipple of  
appropriate size to the tee (see Fig. 4). Screw the hexagonal  
fitting (1/4-18 NPT internal thread) of the pressure controller to  
the pipe nipple. To avoid leaks and damage to the case, use a  
parallel jaw wrench on the hexagonal fitting close to the pipe  
nipple. Do not tighten the pressure controller by hand by  
holding the case.  
STEAM TRAP  
(SIPHON LOOP)  
1
4-1/2 TO 5-1/2  
(114.3 TO 139.7)  
Make all pipe connections in accordance with approved  
standards. Use only a small amount of pipe compound to seal  
the connection joints. Excess pipe compound may clog the  
orifice in the pipe fitting and prevent the controller from  
operating properly.  
BOILER  
1
1/4 IN. PIPE WITH 1/4 - 18 NPT EXTERNAL THREADS  
ON BOTH ENDS AND 2-1/4 IN. DIAMETER LOOP.  
M23885  
Fig. 2. Steam trap mounting.  
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®
L404F,T,V PRESSURETROL CONTROLLERS  
MAIN  
OIL  
LINE  
STRAINER  
ATOMIZER  
MANUAL  
SHUTOFF  
VALVE  
LOW OIL  
PRESSURE  
CONTROLLER  
LOW OIL  
TEMPERATURE  
OIL  
PUMP WITH  
PRESSURE RELIEF  
TO OIL  
BURNER  
HIGH OIL  
PRESSURE  
CONTROLLER  
MANUAL  
SHUTOFF  
VALVE  
RECIRCULATING  
VALVE AND SAFETY  
SHUTOFF VALVE  
ATOMIZING MEDIUM  
(AIR OR STEAM)  
M17861  
Fig. 3. Typical locations of pressure controllers in an oil burner system.  
WIRING  
OIL PRESSURE  
CONTROLLER  
(AT RIGHT  
ANGLES TO THE  
MAIN PIPE LINE)  
WARNING  
Can cause severe injury, death or property damage.  
Disconnect the power supply before beginning wiring.  
More than one power supply disconnect may be  
required.  
Electrical Shock Hazard.  
HEXAGONAL  
FITTING  
PIPE NIPPLE  
All wiring must comply with applicable codes and ordinances.  
All models have terminals (on the MicroSwitch snap-acting  
switch) inside the cover and knockouts for conduit and cable.  
Refer to manufacturer installation and wiring instructions, if  
available, and to typical hookups shown in Fig. 6 to 10.  
®
PIPE  
WRENCH  
MAIN TEE  
(TURN TO LEVEL  
THE CONTROLLER)  
MAIN PIPE LINE  
L404F PRESSURETROL  
M17860  
2
R
Fig. 4. Mounting an oil pressure controller  
directly on the main pipe.  
W
B
24 VOLT RELAY  
Using with Preheated Oil  
When used with preheated oil, a siphon loop must always be  
connected between the controller and the main pipe (see Fig.  
5) to provide thermal buffering.  
L1  
(HOT)  
POWER  
SUPPLY  
L2  
1
OIL PRESSURE  
CONTROLLER  
24 VOLT  
POWER  
SUPPLY  
1
2
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION  
AS REQUIRED.  
4-1/2  
TO  
AS SHOWN, SWITCH OPENS ON PRESSURE RISE. REVERSE  
ACTING (MAKE ON PRESSURE RISE) UNITS ARE WIRED TO  
R-W TERMINALS AND TERMINAL B IS OMITTED.  
5-1/2  
(114 TO  
SIPHON LOOP  
140)  
M19637A  
1
TEE  
Fig. 6. L404F in low voltage relay circuit.  
PREHEATED OIL SUPPLY LINE  
1/4 INCH PIPE WITH 1/4-18 NPT EXTERNAL THREADS ON  
BOTH ENDS AND 2-1/4 IN. (57 MM) DIAMETER LOOP.  
1
M23886  
Fig. 5. Mounting of a siphon loop, with approximate  
dimensions in in. (mm).  
5
71-2429—06  
 
®
L404F,T,V PRESSURETROL CONTROLLERS  
LINE VOLTAGE  
THERMOSTAT  
OTHER  
CONTROLLERS,  
OIL PRESSURE LIMITS, AND  
L404F PRESSURETROL  
2
CONTROLLER  
INTERLOCKS  
FLAME  
SAFEGUARD  
CONTROL  
R
W
B
L1  
(HOT)  
L2  
L2  
M9790  
Fig. 10. Hookup of an oil pressure controller used on a  
single burner or multiburner system with an external oil  
pump.  
MOTOR  
L1  
(HOT)  
L2  
POWER  
SUPPLY  
1
SETTINGS AND ADJUSTMENTS  
1
2
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION  
AS REQUIRED.  
When the pressure at the control rises above the L404  
setpoint, a circuit opens between the R-B terminals. During a  
pressure fall, R-B will close at the setpoint pressure minus the  
switch differential.  
AS SHOWN, SWITCH OPENS ON PRESSURE RISE. REVERSE  
ACTING (MAKE ON PRESSURE RISE) UNITS ARE WIRED TO  
R-W TERMINALS AND TERMINAL B IS OMITTED.  
M19638A  
For example, if a controller is set to differential B (see Fig.11)  
with a controller setpoint of A, R-B will open when the pressure  
rises to A. Then during a pressure fall, the R-B terminals will  
close when the pressure drops to C (A minus differential B).  
Fig. 7. L404F in a typical 2-wire control circuit.  
For make on rise applications, the switch is wired to R-W  
terminals. The R-W circuit will close on pressure rise to the  
setpoint. R-W will open again on a pressure drop past the  
switch differential.  
R
R
W
B
W
B
B
R-W  
B
R-W  
(OMITTED)  
CONTROL  
SET POINT  
B-R BREAKS  
(R-W MAKES)  
L404T  
BREAKS ON PRESSURE  
RISE TO SET POINT  
L404V  
MAKES ON PRESSURE  
RISE TO SET POINT  
M1801B  
DIFFERENTIAL  
(ADJUSTABLE)  
B-R MAKES  
(R-W BREAKS)  
Fig. 8. L404T,V terminal blocks and internal schematics.  
B-R  
W
B-R  
W
SWITCH ACTION ON  
PRESSURE RISE  
SWITCH ACTION ON  
PRESSURE FALL  
OIL PRESSURE MAIN OIL VALVE  
CONTROLLER  
SOLENOID  
FLAME  
SAFEGUARD  
CONTROL  
INDICATES CLOSED SWITCH CONTACTS.  
M19639B  
L2  
Fig. 11. Operation of switch on pressure rise and fall.  
M9789  
Setpoint Adjustment  
Fig. 9. Hookup of an oil pressure controller used on a  
single burner system with an integral oil pump.  
Turn the pressure adjusting screw on the top of the controller  
(Fig. 12) to adjust the setpoint. Turn the differential adjusting  
screw to the desired pressure difference between switch  
opening and switch closing.  
NOTE: When the main scale setting is at the lower end of the  
operating range, the differential range will be less  
than the differential setting by approximately 20  
percent.  
71-2429—06  
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®
L404F,T,V PRESSURETROL CONTROLLERS  
However, if recalibration is necessary, remove the cover and  
loosen the setscrews which hold the scaleplate. Adjust the  
plate up or down, as required, to bring the device into  
calibration. Tighten the setscrews securely and replace the  
cover.  
DIFFERENTIAL  
ADJUSTING SCREW  
PRESSURE ADJUSTING SCREW  
GROUND SCREW  
SCALEPLATES  
MAIN SCALE  
PRESSURE  
INDICATOR  
CHECKOUT  
After the controller has been installed, wired and adjusted, it  
should be tested with the system in operation. First, allow the  
system to stabilize. Then, observe the operation of the  
controller while raising and lowering its setpoint. Pressure  
should increase when the setpoint is raised and decrease  
when the setpoint is lowered.  
DIFFERENTIAL  
SETTING  
INDICATOR  
Also, check the make and break points of the controller. If they  
do not agree with a separate, accurately calibrated pressure  
gauge, a slight adjustment of the scaleplate(s) may be  
necessary.  
DIAPHRAGM  
ASSEMBLY  
OPERATING  
LEVER  
M19640A  
Use accurate pressure testing equipment when checking out  
the controller. Do not rely on inexpensive gauges. The  
controllers are carefully calibrated at the factory.  
®
Fig. 12. view of L404 PressureTrol Controller.  
Scaleplate Adjustment  
The L404F,T,V has been carefully calibrated during  
manufacture and should not require recalibration.  
7
71-2429—06  
 
 
®
L404F,T,V PRESSURETROL CONTROLLERS  
Automation and Control Solutions  
Honeywell International Inc.  
1985 Douglas Drive North  
Golden Valley, MN 55422  
Honeywell Limited-Honeywell Limitée  
35 Dynamic Drive  
® U.S. Registered Trademark  
© 2010 Honeywell International Inc.  
71-2429—06 M.S. Rev. 09-10  
Printed in U.S.A.  
Toronto, Ontario M1V 4Z9  
customer.honeywell.com  
 

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