Spirax Sarco BT1050 Installation And Maintenance Instructions Manual

Boiler blowdown timer

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Installation and maintenance manual (4 pages)

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4058152/4

BT1050

Boiler Blowdown Timer

Installation and Maintenance Instructions

BT1050

IM-P405-39

AB Issue 4

1. Safety information

2. User instructions and

delivery information

3. System overview

4. Mechanical

installation

5. Electrical

installation

6. Commissioning

- Quick set-up

- Full

7. Communications

8. Maintenance

9. Fault finding

10. Technical

information

- Default settings

11. Appendix

- Summary of the

Modbus protocol

12. Menu map

Printed in GB

Commissioning password

Current legislation states that in order to prevent tampering and potentially

hazardous programming errors, access to the pass codes required to enter

commissioning mode should only be available to qualified and trained

personnel.

Enter commissioning

This is done from the run mode by pressing and holding down the

for 5 seconds.

The run mode display will disappear and the display

will show 'PASS CODE' with '8888' at the bottom

PASS CODE

right corner of the screen. The flashing leading digit

indicates the position of the cursor. The default,

or factory set pass code is 7452 but this can be

changed from within the commissioning mode. The

pass code can be entered by using the

buttons to increase or decrease the flashing value

and the

and

Pressing the

incorrect pass code is used, the display automatically

returns to the run mode.

8888

This page MUST be removed

after commissioning

and kept in a safe,

access controlled location.

button

and

buttons to move the cursor.

button will enter the pass code. If an

IM-P405-39 AB Issue 4

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Summary of Contents for Spirax Sarco BT1050

Page 1 AB Issue 4 Current legislation states that in order to prevent tampering and potentially hazardous programming errors, access to the pass codes required to enter BT1050 commissioning mode should only be available to qualified and trained personnel. Boiler Blowdown Timer...
Page 2: Safety Information
This product 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 BT1050 2008. The product may be exposed to interference above the limits of Heavy Industrial Immunity if: The product or its wiring is located near a radio transmitter.
Page 3 Symbols Equipment protected throughout by double insulation or reinforced insulation. Functional earth (ground) terminal, to enable the product to function correctly. Not used to provide electrical safety. Clean earth / ground. Safety earth. Caution, risk of electric shock. Caution, risk of danger, refer to accompanying documentation. Optically isolated current source or sink.
Page 4: Pressure Systems
Determine the correct installation situation and direction of fluid flow. iv) Spirax Sarco products are not intended to withstand external stresses that may be induced by any system to which they are fitted. It is the responsibility of the installer to consider these stresses and take adequate precautions to minimise them.
Page 5: Protective Clothing
1.16 Returning products Customers and stockists are reminded that under EC Health, Safety and Environment Law, when returning products to Spirax Sarco they must provide information on any hazards and the precautions to be taken due to contamination residues or mechanical damage which may present a health, safety or environmental risk.
Page 6: All Rights Reserved
Spirax-Sarco Limited. 2.1 General description The BT1050 is a timer for the control of a bottom blowdown valve. It allows a valve at the bottom of the boiler to open, removing precipitated solids that could otherwise build up, eventually causing damage.
Page 7: Lcd Display
Fig. 2 Graphic display Features only available on linked BT1000 or BT1050 timers. Indicates an error or alarm The display is divided into four main sections: Current time.
Page 8 2.5 Timers information menu This menu details the duration, start, repeat and stop time that has been selected. It also displays which days have been selected. A ' - ' means that day has not been selected. T i m e r d u r a t i o n s t a r t 0 8 : 0 0...
Page 9: Other Features
2.7 Other features A test function provides the operator with a diagnostic tool. The BT1050 can communicate via an Infrared link between adjacent units. It can be designated as either a slave or a master unit - see Section 7, 'Communications'.
Page 10: System Overview
3. System overview The BT1050 controls the opening and closing of a valve at the bottom of the boiler to remove precipitated solids that could otherwise build up, eventually causing damage. Each BT1050 has three timers. Three timer sequences are available. Only one timer sequence can be allocated to any one day.
Page 11 BT1050 functional timing diagram (Multi-blowdowns per day) Setting up the timers - explanation: 1. Three TIMER sequences / patterns available 2. For each day, only one timer sequence can be allocated. 3. Timers 2 and 3 are not available if timer 1 is not being used or all of timer 1 days are used.
Page 12 Installation B TIMER 1 sequence TIMER 2 sequence TIMER 3 sequence Not available Installation C TIMER 1 sequence TIMER 2 sequence Not available TIMER 3 sequence Not available IM-P405-39 AB Issue 4...
Page 13 CLOCK - 24 hrs CLOCK - 24 hrs IM-P405-39 AB Issue 4...
Page 14: Mechanical Installation
4. Mechanical installation Note: Read the 'Safety information' in Section 1 before installing the product. 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.
Page 15 Cut the panel to the dimensions given in Figure 5. Drill the screw holes in the panel in the positions indicated. Remove the backing from the gasket supplied and apply to front face of the product. The bezel can be used to enhance the appearance of the panel cutout. If required, fit this to the outside of the panel.
Page 16: Electrical Installation
Use only the connectors supplied with the product, or spares obtained from Spirax Sarco Limited. Use of different connectors may compromise product safety and approvals. Ensure there is no condensation within the unit before installing and connecting the power.
Page 17 11. Additional protection must be provided to prevent accessible parts (e.g. signal circuits) from becoming Hazardous Live if a wire or screw is accidentally loosened or freed. Ensure all wires are secured to at least one other wire from the same circuit. The attachment must be as close to the terminal block as possible but must not apply undue stress on the connection.
Page 18 5.2 Mains wiring notes: 1. Read Section 5.1, General Wiring notes, before attempting to wire the supply to the product. 2. Fuses must be fitted in all live conductors. Disconnect device conforming to IEC 60947-1 and IEC 60947-3 Disconnect device conforming to IEC 60947-1 and IEC 60947-3 Product 3 A fuse...
Page 19: Signal Circuit
5.3 Signal wiring notes An earth current loop is created if a wire or screen is connected between two earth points that are at different potential (voltage). If the wiring diagram is followed correctly, the screen will only be connected to the earth at one end. The earth terminal is a functional earth rather than a protective earth.
Page 20 5.4 EIA / TIA-485 communication wiring diagram The product can be connected as a slave to a two or four-wire EIA / TIA-485 multi-drop network. Slave(s) (Boiler controller) H / D H / D Common Earth wiring notes Master Fig. 8 RS485 / Modbus full duplex circuit (view from the top) EIA / TIA-485 wiring notes: EIA / TIA-485 symbols are used (A = Tx-, B = Tx+ and A' = Rx-, B' = Rx+).
Page 21 Slave(s) (Boiler controller) H / D H / D Add link between terminals 91 and 90 Common Earth See wiring notes Master Fig. 9 RS485 / Modbus half duplex circuit (view from the top) EIA / TIA-485 wiring notes continued: The bus common must be connected directly to protective ground / earth at one point only.
Page 22: General Information
Note: If the product has been powered down with the battery switched off, the display will show a spurious time and date on power up. To correct this, switch on the battery and enter the correct time and date. BT1050 Graphic display Exit sub-menus and shift left...
Page 23 6.1.1 Commissioning mode navigation After the correct pass code has been entered the display shows: To exit the commissioning mode at any stage, press and hold the button to return to the run mode. MODE Press the buttons to scroll through the first level menus. Press the button to enter a particular sub-menu.
Page 24: Quick Set-Up - Commissioning
All BDV60 blowdown vessels are designed with two threaded connections for installing a Spirax Sarco self-acting cooling system. In the UK and in many other countries the cooling system should be set to maintain BDV60 water discharge at a temperature below 43°C...
Page 25 6.3 Commissioning - full 6.3.1 Main menu structure Allows the user to view and change the valve status OFF, OPEN MODE ä or AUTO. Allows displayed units to be configured:- DATA Temperature in °C or °F, multiple timer priority and recovery time to allow blowdown vessel contents to cool.
Page 26: Mode Sub-Menu
6.3.2 Commissioning via the sub-menus Sub-menus and their functions are outlined below, and enable the user to programme the unit. Additional information is given where further choices can be made. On selecting the sub-menu, the changeable variables will appear on the screen bottom right.
Page 27 6.3.4 DATA sub-menu DATA TEMP °F or °C (°C default). ä Select the preferred option and press button. Prevents more than one boiler blowing down at the same DATA time. Selects which timer has priority (opens the blowdown PRIORITY valve first). 9 = highest priority and 1 = lowest priority If the timer is not linked to other timers, set priority to '0'.
Page 28: Output Sub-Menu
6.3.6 OUTPUT sub-menu Selects MODBUS communication settings: OUTPUT COMMS Address - This sets the address for Modbus communication. ä The default is 001, and the maximum is 247. ADDRESS OUTPUT Baud rate defines the speed of communication between COMMS the product and an interrogating device in bits per second. The product can be set up to 1200, 9600 or 19200 Baud, BAUD with a default setting of 9600.
Page 29 6.3.7 CLOCK sub-menu CLOCK ä HRS (24) sets time in hours. CLOCK MINS Sets time in minutes. CLOCK Sets current year (e.g. 09). CLOCK MONTH Sets month (e.g. 05 for May). CLOCK DATE Sets date (1-31). CLOCK Sets actual day of the week. Note This is not day(s) on which blowdown occurs.
Page 30 6.3.8 TIMER sub-menu This timer controls the bottom blowdown times and their duration. The parameters will vary according to the type of boiler. Seek advice from a boiler manufacturer, insurance company, or a competent water treatment company. Timers 1, 2, and 3 are set in exactly the same way - see below:- This is the time (in seconds) the blowdown valve is to TIMER 1, 2 or 3...
Page 31 6.3.9 ALARM sub-menu Only shows if the switch is FITTED. Set ON or OFF. ALARM ON - The alarm will sound if the valve fails to lift within ä LIFT the time set in INPUT / LIFT. OFF - No alarm. Note: If ON selected, alarm will operate if MODE set to OPEN, or if valve is manually opened.
Page 32 6.3.11 SOFTWARE VERSION sub-menu SW VER Allows the software version to be viewed. See separate literature for further information. 6.3.12 PASS CODE sub-menu SET PASS This allows the default pass code to be changed to a user-defined value. It is important that if the default pass code is changed that the new value is noted and kept safe.
Page 33: Infrared (Ir)
7. Communications 7.1 Infrared (IR) All products in the range can communicate via an infrared bus between adjacent controllers. It enables the parameters of up to seven slave products to be passed to a master product fitted with RS485 (products with a graphics display). The product connected to the RS485 networks must be fitted on the left of all the slaves fitted to the IR bus (Figure 11) and have ‘master’...
Page 34: Maintenance
7.2 RS485 addressing An offset is added to the register addresses (see above) for each device, depending on their position on the IR bus, i.e. the master’s offset is 0, the device to its right hand side has an offset of 100, the one to its right 200 and so on. RS485 Slave Slave...
Page 35 8.3 Replacement and disposal of battery Caution: - Permanent damage will occur if the printed circuit board (pcb) is completely removed. - Do not remove the front keypad. 8.3.1 Cut the two side labels along the join line. 8.3.2 Squeeze enclosure in positions indictated to release locking tabs. IM-P405-39 AB Issue 4...
Page 36 8.3.3 Remove the rear half of the enclosure only. 8.3.4 Remove the blue support. IM-P405-39 AB Issue 4...
Page 37 8.3.5 Caution: permanent damage will occur if the printed circuit board (PCB) is completely removed. Slide the PCB out just far enough to access the cable tie securing the battery. Cable tie hole 8.3.6 Cut the cable tie and lift the battery from the PCB. IM-P405-39 AB Issue 4...
Page 38 8.3.7 Insert the new battery. See Section 10.5 for the battery type. Note: the battery is polarised and only fits one way round. 8.3.8 Thread a new cable tie through holes in the PCB, fasten securely around the battery and trim the end. IM-P405-39 AB Issue 4...
Page 39 8.3.9 Slide the PCB fully back into position and refit the blue support. Ensure the arrow shapes on the support point toward the front. 8.3.10 Replace the rear half of the enclosure. IM-P405-39 AB Issue 4...
Page 40: Fault Finding
9. Fault finding WARNING: Before fault finding read the Safety information in Section 1 and the General wiring notes in Section 5.1. Please note that there are hazardous voltages present and only suitably qualified personnel should carry out fault finding. The product must be isolated from the mains supply before touching any of the wiring terminals.
Page 41 Symptom Action 1. Switch off the mains supply to the product. 2. Disconnect all signal wires. 3. Switch the mains supply on: If symptoms are still present, return the product for examination. 4. Replace each signal wire in turn until the fault occurs. 5.
Page 42 Operational error messages Any operational errors that occur will be displayed in the run mode, on the alarms and errors screen. Error Cause Action message 1. Remove the power from the product. There has been a 2. Check that all the wiring is correct. 3.
Page 43 Error Cause Action message Data in the recovery counter 1. See 'Data timer X 'Invalid' action. has been 2. Press the button to clear. Data recovery corrupted. invalid Data in the timer flag register has been lost 1. See 'Data timer X 'Invalid' action. Data flags or corrupted.
Page 44: For Technical Assistance
10. Technical information 10.1 For technical assistance Contact your local Spirax Sarco representative. Details can be found on order / delivery documentation or on our web site: www.spiraxsarco.com 10.2 Returning faulty equipment Please return all items to your local Spirax Sarco representative. Please ensure all items are suitably packed for transit (preferably in the original cartons).
Page 45 10.5 Battery (Clock calendar) Manufacturer TADIRAN Manufacturers part number SL-360 / PT Spirax Sarco part number 0965057 AA (PCB tagged) Lithium Thionyl Chloride Type (Lithium content 0.65 g) Voltage 3.6 V Capacity 2.4 Ah minimum Temperature range 0 - 70°C minimum Shelf life 10 years - With battery switch OFF @ Tamb: 25°C...
Page 46: Switch Box
10.7 Input technical data Switch box Maximum voltage 32 Vdc (no load, open circuit) Maximum current 3 mAdc (short circuit) Lockout (link) Maximum voltage 32 Vdc (no load, open circuit) Maximum pulldown voltage 0.25 Vdc Maximum current 1.5 mAdc 10.8 Output technical data Relay(s) Contacts 2 x single pole changeover relays (SPCO)
Page 47: Default Settings
10.10 Default settings 10.10.1 MODE MENU Allows the valve to be manually opened or closed, automatically opened and closed under the control of the timer Ranges AUTO, OPEN, OFF Default AUTO 10.10.2 DATA MENU TEMP (temperature units) °C or °F Ranges Default °C...
Page 48: Output Menu
10.10.5 OUTPUT MENU COMMS - ADDRESS (MODBUS communication) Ranges 1 - 247 Default Resolution (steps) COMMS - BAUD (MODBUS communication) Ranges 1200, 9600, 19200 Default 9600 COMMS - IR (Infrared communication) Ranges MASTER or SLAVE Default SLAVE COMMS - IR (units in network) Ranges 1 - 8 10.10.6 CLOCK MENU...
Page 49 10.10.7 TIMER X (1 - 3) MENU DURATION (valve open time) Ranges 0 - 999 Default Resolution (steps) Units Seconds Note: If the mains power supply drops below the required specification, or power down occurs during a blowdown, the relays will de-energize and close the valve. If the mains supply is restored after the blowdown time has elapsed, the valve will remain shut until the next scheduled blowdown time.
Page 50: Alarm Menu
10.10.8 ALARM MENU LIFT (alarms occurs if the valve does not lift of the seat within lift time) Only available if the switch is fitted and selected Ranges ON or OFF Default LATCH (alarm relay can be latched until commissioning mode is entered) Only available if the switch is fitted and selected Ranges ON or OFF...
Page 51 11. Appendix - Summary of the Modbus protocol Format: Byte Start 1 bit Data 8 bit Parity 0 bit Stop 1 bit Format: Request frame Address 1 byte Function code 1 byte Start address 2 bytes Quantity of registers 2 bytes Cyclic redundancy check (CRC) 2 bytes Total...
Page 52: Exception Codes
Parameters and register data Register Parameters 6 - Identity Note: When the device is an IR slave and there is a temporary error in the IR Master-Slave comms, an offset of +32768 is added to the identification value of that particular slave stored in the master's database.
Page 53 12. Menu map IM-P405-39 AB Issue 4...
Page 54 IM-P405-39 AB Issue 4...
Page 55 IM-P405-39 AB Issue 4...
Page 56 IM-P405-39 AB Issue 4...

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