Spirax Sarco BT1050 Manual

Local regulations may restrict the use of this product to below the conditions quoted.
In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2017
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TI-P405-40
AB Issue 4
BT1050
Boiler Blowdown Timer
Description
The BT1050 is a timer for the control of a bottom blowdown valve.
It allows the bottom blowdown valve to open, removing
precipitated solids that could otherwise build up and eventually
cause damage.
The BT1050 has three timers. These allow different blowdown
cycle times and durations to be set, for example, MON - FRI.
Up to three blowdown cycles can be selected in one day. The
timers can also be used to prioritise boiler blowdown cycles.
The product can be panel, DIN rail or chassis mounted and is
powered by a 110 to 240 Vac at 50 / 60Hz mains supply.
The front panel has an LCD graphic display and five-button
keypad.
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, and connected to a two or four wire EIA / TIA-485 multi-drop
network.
Up to nine BT1050 (or BT1000) units can be installed and linked
for multi-boiler installations.
Approvals
The BT1050 complies with Electromagnetic Compatibility
Directive 2014/30/EU and all its requirements.
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 BT1050 complies with the Low Voltage Directive (2014/35/EU)
by meeting the standards of:
- EN 61010-1:2010 safety requirements for electrical equipment
for measurement, control, and laboratory use.
- UL listed (open).
Principal features:
- Purpose designed for bottom blowdown duties.
- Three separately adjustable timers.
- Straightforward to commission – quick set-up option.
- Universal power supply - 110 Vac to 240 Vac.
- Timers prevent boilers from blowing down in rapid succession.
- Warns if valve fails to open or close.
- UL approved.
BT1050
OK
Clamping screw
Clamping screw
Graphic
display
5 button
display

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BT1050 Boiler Blowdown Timer
TI-P405-40 AB Issue 4
Technical data BT1050
Power supply
Mains voltage range 110 Vac to 240 Vac at 50 / 60 Hz
Power consumption 7.5 W (maximum)
Environmental
General Indoor use only
Maximum altitude 2 000 m (6 562 ft) above sea level
Ambient temperature limits 0 - 55 °C
Maximum relative humidity 80% up to 31 °C decreasing linearly to 50% at 40 °C
Overvoltage category
Pollution degree
2 (as supplied)
3 (when installed in an enclosure) - Minimum of IP54 or UL50 /
NEMA Type 3, 3S, 4, 4X, 6, 6P or 13.
Enclosure rating
(front panel only)
NEMA type 4 hose down only (UL approval) and IP65 (verified
by TRAC Global)
LVD (safety)
Electrical Safety EN 61010-1
UL61010-1, 3rd Edition, 2012-05
CAN/CSA-C22.2 No. 61010-1, 3rd Edition, 2012-05
EMC
Immunity EN 61326: A1 + A2 Annex A Table 1 for industrial locations
Emissions EN 61326: A1 + A2 Class A Table 4
Enclosure Material Polycarbonate
Front panel Material Silicone rubber, 60 shore.
Solder Tin / lead (60 / 40%)
Mains and signal connector
Termination
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.
Cable size 0.2 mm²(24 AWG) to 2.5 mm²(12 AWG).
Stripping length 5 - 6 mm
Cable / wire
and
connector
data
Switch box and
Lockout (link)
circuit
Typ e High temperature
Shield type Screened
Number of cores 2
Gauge 1 – 1.5 mm²(18 - 16 AWG)
Maximum length 100 m (328 ft)
Recommended type Prysmian (Pirelli) FP200, Delta Crompton Firetuf OHLS
RS485
communication
Typ e EIA RS485 twisted pair
Shield type Screened
Please note that LAN Cat 5 or
Cat 5E ScTP (screened), FTP
(foil) or STP (shielded) cable can
be used, but limited to 600 m.
Number of pairs 2 or 3
Gauge 0.23 mm² (24 AWG)
Maximum length 1200 m (4000 ft)
Recommended type Alpha wire 6413 or 6414

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BT1050 Boiler Blowdown Timer
TI-P405-40 AB Issue 4
Input
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
RS485
Physical layer RS485 4-wire full or 2-wire half duplex
Protocol Modbus RTU format
Isolation 60 Vac/dc
Receiver unit load (256 devices - maximum)
Output rate Up to 10 frames / second
Clock calendar battery
Typ e AA (PCB tagged) Lithium Thionyl Chloride
(Lithium content 0.65g)
Shelf life 10 year – with battery switch off @ TAMB: 25 °C
Working life 10 year – Mains power on 35 hours / week @ TAMB: 55 °C
Infrared
Physical layer IrDA
Baud 38400
Range 10 cm
Working angle 15°
Eye safety information Exempt from EN 60825-12: 2007 Safety of laser products ~
does not exceed the accessible emission limits (AEL) of class 1
Output Relays
Contacts 2 x single pole changeover relays (SPCO)
Voltage ratings (maximum) 250 Vac
Load
Resistive 3 amp @ 250 Vac
Inductive 1 amp @ 250 Vac
ac motor load
¼HP (2.9 amp) @ 250 Vac
1/10 HP (3 amp) @ 120 Vac
Pilot duty load C300 (2.5 amp) - control circuit / coils
Electrical life (operations) 3 x 105or greater depending on load
Mechanical life (operations) 30 x 106
Technical data BT1050 (continued)

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BT1050 Boiler Blowdown Timer
TI-P405-40 AB Issue 4
BT1050
OK
How to specify
Blowdown timer with; three integral timers, LCD display, valve malfunction alarm and infrared communications.
How to order
Example: 1 off Spirax Sarco BT1050 blowdown timer.
Safety information, installation and maintenance
This document does not contain sufficient information to install the product safely. See the Installation and Maintenance Instructions
supplied with the product, which gives full wiring, commissioning and operating instructions.
Attention is drawn to Safety Information Leaflet IM-GCM-10, as well as to any national regulations concerning blowdown. In the UK,
guidance is given in Health and Safety Executive Guidance Notes BG01 and INDG436. In particular, your attention is drawn to the
danger of working on a shut down boiler whilst other boilers are operating.
Warnings:
- Isolate the mains supply before installing the controller as live terminals at mains voltage are exposed.
- Only use the screws provided with the product.
- Do not install the product outdoors without additional weather protection.
- Do not drill the product case or use self-tapping screws.
Caution:
- A 15 mm gap is required between multiple controllers for cooling.
Installation / environmental conditions:
Install the product in an environment that minimises the effects of heat, vibration, shock and electrical interference.
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) or Type 3, 3S, 4, 4X, 6, 6P and 13 (UL50/NEMA 250) is required.
The product may be installed on a DIN rail, chassis plate, or in a panel cutout. A bezel is provided.
Dimensions/weights
Weight (approximate) 400 g
52 mm 120 mm
140 mm 120 mm
112 mm8 mm