Honeywell Pressuretrol L404 Series Manual Download Page 11 | Manualshive

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60-2150—10

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Summary of Contents for Pressuretrol L404 Series

Page 1: ...or visible through cover Hexagonal fitting with 1 4 18 NPT internal threads for direct mounting to 14026 Steam Trap siphon loop Surface mount is available using screws through holes knockouts in case backing Can be used with steam air non combustible gases or fluids non corrosive to the pressure sensing ele ment Stainless steel diaphragm except 300 psi 21 1 kg cm2 2068 kPa models also allows use w...

Page 2: ...troller case Scales are marked in psi and kPa ELECTRICALCONNECTIONS Internalscrewterminals hole in side of case for 1 2 in conduit MOUNTINGMEANS Hexagonalfittingondiaphragmhas 1 4 18 NPT internal threads for mounting on a pipe or steam trap siphon loop Also can be surface mounted using screws through two holes knockouts in back of case Ordering Information When purchasing replacement and moderniza...

Page 3: ...ng Action on Pressure Rise Operating Rangesa Midscale Subtractive Differentiala Adjustable Maximum Surge Pressure Model to Setpoint psi kg cm2 kPa psi kg cm2 kPa psi kg cm2 kPa L404A spst breaks circuit 2 to 15b c 5 to 50 10 to 150b 20 to 300d 14 to 1 0 35 to 3 5 66 to 10 6 1 4 to 21 0 14 to 103 34 to 345 69 to 1034 138 to 2068 2 to 6 4 to 12 8 to 16 15 to 40 14 to 41 28 to 82 56 to 1 10 1 04 to 2...

Page 4: ... 0 91 kg FINISH Gray APPROVALS Underwriters Laboratories Inc listed L404A B C D F L604A L M only file no MP466 vol 10 guide no MBPR CanadianStandardsAssociationcertified L404A B C D F L604A L only file no LR1620 guide no 400 E 0 REPLACEMENT PARTS 129178 Thermoplastic Cover 14026SteamTrap siphonloop 1 4in blackironpipe Necessary for boiler installations ACCESSORIES 33312B Knurled Adjustment Knob wi...

Page 5: ...on the product to make sure the product is suitable for your application 3 Installer must be a trained experienced flame safe guard control technician 4 After installation is complete check out product operation as provided in these instructions CAUTION 1 Disconnect power supply before beginning in stallation to prevent possible equipment dam age or electrical shock 2 When using the controller wit...

Page 6: ...ine voltage wiring 3 Fornormalinstallations usemoisture resistantNo 14 wire suitable for at least 167 F 75 C when you are using the controller with a flame safeguard primary control or at least 194 F 90 C when using it with a programming control 4 Forhightemperatureinstallations usemoisture resis tant No 14 wire selected for a temperature rating above the maximum operating temperature 5 Allmodelsh...

Page 7: ...ON AS REQUIRED BREAKS R TO B AND MAKES R TO W WHEN PRESSURE RISES TO SETPOINT L2 POWER SUPPLY FLAME SAFEGUARD CONTROL MOTOR OR OTHER LOAD SPDT CONTROLLER HIGH LIMIT W R B ALARM Fig 9 L404F or L604 with jumper installed controlling an M644B motor M8940 L1 HOT L2 1 1 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED 24 VOLT THERMOSTAT LOW VOLTAGE RELAY L404 LOAD THERM POWER SUPPLY 1 2 Fig...

Page 8: ... the main scale set point for the desired operating pressure by turning the main scale adjusting screw Fig 11 on the top of the case until the main scale setting indicator is at the desired value On an L404A B F with a 5 to 150 psi 3 to 10 3 kg cm2 34 to 1034 kPa operating range or an L604A adjust the differential setting by turning the dif ferential adjusting screw Fig 11 until the differential s...

Page 9: ...ng on themodelofthecontroller AnL404AorCshouldbreak an L404BorDshouldmake anL404F L604L Mshouldbreak R B and make R W and an L604A should break R2 B and make R1 W If it makes the ohmmeter reads zero if it breaks the ohmmeter reads infinity 5 Raise the set point of the controller simulating a pressure decrease through a range greater than the differen tial The switch should break or make just the o...

Page 10: ...e pointer may be over the index mark but the controller still may not be operating within the tolerance of its scale setting In this case carefully bend the steam trap siphon loop until the controller switches properly MAINTENANCE The cover of the controller should be in place at all times to protect the internal components from dirt dust and physical damage Routine maintenance should consist of o...

Page 11: ...11 60 2150 10 ...

Page 12: ... Home and Building Control Helping You Control Your World Honeywell Inc Honeywell Limited Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley MN 55422 Scarborough Ontario M1P 2V9 Printed in U S A www honeywell com bbc ...

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