BC3150 Blowdown Controller

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BC3150 Blowdown Controller | Manualzz

Boiler Controls

BC3150

Blowdown Controller

Description

The BC3150 is a blowdown controller for steam boilers. It controls

TDS (total dissolved solids – salts in solution) by opening and closing a blowdown valve. It works in conjunction with a Spirax

Sarco conductivity sensor, a boiler blowdown valve or condensate dump valve.

The product can be panel, DIN rail or chassis mounted and powered by a 110 to 240 Vac mains supply.

The front panel has a 3 digit LCD and a five-button keypad.

The product has no battery. The programmed settings are held in non-volatile memory (Flash) and are written to after changing a parameter and pressing the OK key.

Principal features:

-

Blowdown controller with temperature compensation.

-

Type approved as a TDS limiter and controller.

-

Works with CP10, CP30 or CP32 conductivity probes.

-

Wide range: 1-9990 µS/cm or ppm – (x1, x 10, x 100 x 1000).

-

LCD display with direct probe condition indicator.

-

Infrared communications.

Approvals

This product complies with the Electromagnetic Compatibility

Directive 2004 / 108 / EC and all its requirements.

The BC3150 is suitable for Class A Environments (e.g. industrial).

A fully detailed EMC assessment has been made and has the reference number UK Supply BH BC3150 2008.

The BC3150 complies with the Low Voltage Directive by meeting the standards of:

-

EN 61010-1:2010 safety requirements for electrical equipment for measurement, control, and laboratory use.

The BC3150 has been type-tested as a TDS controller and limiter by meeting the standard:

-

Vd TÜV Equipment for Water Control 100 (07.2010).

Function

All ranges and operating parameters are selected using the software menu.

Commissioning is carried out using the two lower buttons.

Once fully commissioned, the TDS value is displayed in μS/cm (or ppm if selected).

If the water conductivity exceeds the Set Point level, the TDS value shown on the display will alternate with 'bld', and the valve relay will be energised until the conductivity drops below 5% of full scale (FS) below the set point.

If the water conductivity exceeds the alarm level, the TDS value will alternate with 'AL' , and the valve relay will be energised until the conductivity drops 3% (FS) below the alarm level.

If the system is carrying out a purge, The TDS value will alternate with 'Pur', and the valve relay will be energised until the conductivity drops 5% (FS) below the set point.

BC3150

CLN

OK

AL x1000 x100 x10

Clamping screw

LCD display

5 button display

Clamping screw

Inputs

The BC3150 can accept a signal from a Spirax Sarco conductivity probe (CP10, CP30, or CP32).

A Pt100 temperature sensor may be connected to provide temperature compensation (2% / °F). This is recommended if the boiler is working at varying pressures, or for other applications, such as condensate monitoring or coil boilers, where the temperature may vary. If a Pt100 is not fitted, the product uses a default temperature of 363°F (145 psig).

Outputs

Pulsed output - For smaller boilers where the capacity of the blowdown valve is relatively high compared to the boiler size, the blowdown may be set to pulsed, rather than continuous output, opening for 10 seconds, and closing for 20 seconds. This slows the rate at which the boiler water is removed so that the level is not unduly affected, avoiding the risk of triggering a low water alarm.

Other features

To prevent unwanted or inadvertent changes being made, all commissioning parameters are protected with a pass code.

The BC3150 can communicate via an infrared link between adjacent controllers.

This feature enables the parameters of this product (OEM) to be passed to a product fitted with RS485 (user).

The BC3150 is always an IR slave – No set-up or adjustment is needed.

An isolated 4 - 20 mA output is provided as standard, and may be used for remote display of the TDS level or as an output to a computerised management system.

46

Local regulation may restrict the use of this product below the conditions quoted. Limiting conditions refer to standard connections only.

In the interests of development and improvement of the product, we reserve the right to change the specification.

TI-P403-91-US

10.13

BC3150

Blowdown Controller

Technical data BC3150

Power supply

Environmental

Cable / wire and connector data

Mains and signal

TDS probe connector

Mains voltage range

Power consumption

General

110 Vac to 240 Vac at 50/60 Hz

7.5 W (maximum)

Indoor use only

Maximum altitude 2 000 m (6 562 ft) above sea level

Ambient temperature limits 0 - 55 °C (32-131°F)

Maximum relative humidity 80% up to 31 °C (88°F) decreasing linearly to 50% at 40°C(104°F)

Overvoltage category III

Pollution degree

2 (as supplied)

3 (when installed in an enclosure) -

Minimum of IP54

Enclosure rating

(front panel only)

LVD (safety)

EMC

Enclosure

Front panel

Solder

Termination

Cable size

Stripping length

Type

Shield type

Gauge

Maximum length

Recommended type

Type

Shield type

Pt100 probe

Number of cores

cable / wire

Gauge

Maximum length

Recommended type

Type

4 - 20 mA

Shield type

output

Number of pairs

cable / wires

Gauge

Maximum length

Recommended type

IP65 (verified by TRAC Global)

Electrical safety EN 61010-1

Immunity/Emissions Suitable for heavy industrial locations

Material

Material

Polycarbonate

Silicone rubber, 60 shore.

Tin / lead (60 / 40%)

Rising clamp plug-in terminal blocks with screw connectors.

Caution: Use only the connectors supplied by Spirax Sarco Ltd. -

Safety and Approvals may be compromised otherwise.

0.2 mm ² (24 AWG) to 2.5 mm² (12 AWG).

5 - 6 mm (0.2")

High temperature

Screened

1 – 1.5 mm ² (18 - 16 AWG)

0 - 9.99 range - 10 metres (33ft)

0 - 99.90 range - 30 metres (100ft)

0-999.0 range and 0-9990 ranges - 100 metres (328ft)

Prysmian (Pirelli) FP200, Delta Crompton Firetuf OHLS

High temperature, twisted

Screened

3

1 - 1.5 mm² (18 - 16 AWG)

100 m (328 ft)

Various

Twisted pair

Screened

1

0.23 - 1 mm ² (24 - 18 AWG)

100 m (328 ft)

Various

Boiler Controls

Spirax Sarco, Inc., 1150 Northpoint Blvd., Blythewood, SC 29016 • Phone: (803) 714-2000 • Fax: (803) 714-2222

© Spirax Sarco, Inc. 2001

TI-P403-91-US

10.13

47

Boiler Controls

BC3150

Blowdown Controller

Technical data BC3150 (continued)

Output technical

data

Probe types

Water

Ranges

conductivity

Accuracy

µS/cm to ppm conversion

Neutralising factor

Input

Resolution

technical

Drive:

CP10, CP30 and CP32

0 – 9.99 ppm or µS/cm

0 – 99.9 ppm or µS/cm

0 – 999 ppm or µS/cm

0 – 9990 ppm or µS/cm

±2.5% FSD (possibly > in high EM locations)

0.7

0.7

0.1% FSD

ac – 4 wires

data

Temperature

Sensor type

Range

Pt100 – Class B or better

0 - 250°C

(With Pt100 not fitted – user programmed temperature 100 - 250°C, 1°C steps)

compensation

Accuracy

(TC)

Resolution 0.1% FSD

Probe cleaning

Drive:

Maximum voltage

Drive

Time

Minimum current

dc – 3 wires

32 Vdc

Pulsed (1 second on, 1 second off)

20 seconds

0 mA

4 - 20 mA

Relays

Maximum current

Open circuit voltage

(maximum)

Resolution

Maximum output load

Isolation

20 mA

19 Vdc

0.1% FSD

500 ohm

100 V

Output rate

Contacts

10 / second

2 x single pole changeover relays (SPCO)

Voltage ratings (maximum) 250 Vac

Resistive load

Inductive load

3 amp @ 250 Vac

1 amp @ 250 Vac ac motor load

Pilot duty load

¼ HP (2.9 amp) @ 250 Vac

1 /

10

HP (3 amp) @ 120 Vac

C300 (2.5 amp) - control circuit / coils

Electrical life (operations) 3 x 10 5 or greater depending on load

Mechanical life (operations) 30 x 10 6

48

Spirax Sarco, Inc., 1150 Northpoint Blvd., Blythewood, SC 29016 • Phone: (803) 714-2000 • Fax: (803) 714-2222 TI-P403-91-US

10.13

BC3150

Blowdown Controller

Safety information, installation and maintenance

Warning: This document does not contain sufficient information to install the unit safely. The unit operates at a potentially fatal mains voltage. Before attempting to install the unit read the Installation and Maintenance Instructions supplied with it.

Caution: before installing and connecting the power ensure there is no condensation within the unit. The product may be installed on a DIN rail, on a chassis plate, or in a panel cutout. A bezel is supplied.

The product must be installed in a suitable industrial control panel or fireproof enclosure to provide impact and environmental protection. A minimum of IP54 (EN 60529) is required. Spirax Sarco can provide suitable plastic or metal enclosures

Do not install the product outdoors without additional weather protection.

Do not attempt to open the product - it is sealed and has no replaceable parts or internal switches.

Do not cover or obstruct the infrared beam between products.

No special servicing, preventative maintenance or inspection of the product is required.

Boiler water level controls and level alarms do, however, require testing and inspection.

Dimensions / weight

(approximate)

Weight 1 lb

52 mm

(2.05")

120 mm

(4.72")

Boiler Controls

BC3150

CLN

OK

AL x1000 x100 x10

140 mm

(5.51")

120 mm

(4.72")

How to specify

Blowdown controller with LCD display and five-button keypad, and infrared communications.

How to order

Example: 1 off Spirax Sarco BC3150 blowdown controller.

Spirax Sarco, Inc., 1150 Northpoint Blvd., Blythewood, SC 29016 • Phone: (803) 714-2000 • Fax: (803) 714-2222 TI-P403-91-US

10.13

49

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