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Microprocessor-Based Boiler Controller Model 2250

Microprocessor-Based Boiler Controller Model 2250

Model 2250 Microprocessor-Based Boiler Controllers

Product Information

LONWORKS® is the latest in microprocessor technology that gives the user the highest level of application flexibilty. A large graphic screen, multiple inputs and very easy setup, with easy field upgrade characterize this new technology.

Features
  • Steam flashing detector and compensation.
  • Sample/cycle or continuous conductivity control of blowdown.
  • Use sample/cycle for blowdown less than 1,000 lb./hr.
  • Use continuous for blowdown greater than 1,000 lb./hr.
  • Can feed chemical according to water meter percent of bleed or percent on-time.
  • Interactive communications software datalog and control (-RS2L & -RTC Options).
  • Four different languages.

English Spanish (standard)
English French(optional)
English German (optional)
Benefits
  • Accurate control of boiler conductivity.
  • Control results in fuel savings by preventing excessive blowdown.
  • Prevents carryover due to excessive conductivity.
  • Two water/flowmeter inputs provided.
Specifications
Inputs
Power 80-300 VAC
Sensor Input 2 and 4 electrode Conductivity
Temperature comp. Automatic or disable
Flow switch Dry contact
Water Meter Input Two contacting head or open collector
Outputs
Relays Four, 3 Amps @ 120 VAC
4-20 mA Two, isolated w/-35L
Sensor (SR2)
Pressure 600 psi
Max. Temperature 486°F (252° C)
Body Carbon Steel
Electrode 416 SS
Insulator PEEK
Connection ¾ inch MNPT
Controller
Conductivity Range 0-8,000 (other ranges available)
Conductivity Accuracy ±40 µS
Conductivity Resolution 10µS
Deadband Adjustable
Conductivity Setpoint Sample\cycle or continuous
Sample Time Adjustable
Cycle Time Adjustable
Keypad Numeric
Display Illuminated 128x64 pixel LCD
Ambient Temperature 32-158° F (0-70° C)
Enclosure Rating ABS Plastic

Ordering Information

2250   LONWORKS Technology-based cycle/sample or continuous blowdown conductivity controller. Range is 0-8,000 µS, has HIGH/LOW alarms, water meter inputs and chemical feed relays. Requires SR2 or SR4, below, and PL5 or PL6 is recommended. (No power cord or outlets.)
CONTROLLER OPTIONS (optional, select one or more)
-35L   Two 4-20 mA output configurable for conductivity remote data acquisition.
-RS2L   Communications node with LRWS program. Requires -RTC.
-RTC   Schedule feed timer with 28-day programmable clock for selectable relays. Required for operation of -RS2L.
LANGUAGE OPTIONS (optional, choose one, English and Spanish Standard)
-EF   English and French.
-EG   English and German.
SENSOR OPTIONS (recommended, select one below)
SR2   Boiler water sensor, ¾ inch NPT, and elbow. Rated to 486°F @ 600 psi (252°C @ 41.4 bar). This sensor cannot be used after a sample cooler.
SR4   4-electrode sensor, ¾ inch NPT. Rated to 392°F @ 250 psi (200°C @17.2 bar).
PLUMBING (recommended, select one below)
PL5   Plumbing for cycle/sample assembly ½ inch (1/8 & 1/16 orifice plates and union).
PL6   Plumbing for continuous sample assembly, ½ inch (1/8 & 1/16 orifice plates & union).
PL575   Plumbing for cycle/sample assembly ¾ inch (1/8 & 1/16 orifice plates and union).
PL675   Plumbing for continuous sample assembly ¾ inch (1/8 & 1/16 orifice plates & union).
GV   ½ inch forged globe valve for flow metering instead of an orifice plate and union.
Note: Two GV options are required for continuous blowdown and one for cycle/sample.
MOUNTING OPTIONS (optional, select one only)
PM   Panel mount 6 ¼ inch square cutout.
BM   Bracket for pipe mounting.
SOFTWARE
LRWS   Windows-based software program for computer to communicate with 2000 Series Controllers.
BLOWDOWN VALVE OPTIONS (optional, select one only)
MBV1   Motorized ½ inch blowdown valve with 1036 actuator; rated to 250 psi @ 400°F (17.2 bar @ 204°C).
MBV2   Motorized ¾ inch blowdown valve with 1036 actuator; rated to 250 psi @ 400°F (17.2 bar @ 204°C).
MBV3   High pressure motorized ½ inch blowdown valve, with 1275 actuator rated to 600 psi @ 550°F (41.4 bar @ 288°C).
MBV4   High pressure motorized ¾ inch blowdown valve, with 1275 actuator rated to 600 psi @ 550°F (41.4 bar @ 288°C).
PV4   Pneumatic high pressure ½ inch blowdown valve, with 1034 actuator rated to 600 psi @ 486°F (41.4 bar @ 288°C).

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