BKV 4000 Bottom Blowdown Control Valve Installation and Operating Instructions

BKV 4000 Bottom Blowdown Control Valve Installation and Operating Instructions BKV 4000 MKK v10.01-en 1

CONTENTS 1. SAFETY INFORMATIONS... 3 2. DESCRIPTION... 3 3. TECHNICAL SPECIFICATIONS... 4 3.1. BKV 4000 Bottom Blowdown Control Valve... 4 3.2. BLS 4000 Limit Switch... 4 3.3. BNR 4000 Namur Solenoid Valve... 4 4. INSTALLATION and WIRING... 5 4.1. Installation... 5 4.2. Air Connection... 6 4.3. Wiring... 6 5. COMMISSIONING... 7 6. MAINTENANCE... 7 BKV 4000 MKK v10.01-en 2

1. SAFETY INFORMATIONS Safety! Installation, commissioning and maintenance of this device must be done by a qualified person in compliance with the operating instructions. Otherwise device and related equipments may be damaged and personnel may be injured. National and local regulations must be taken into consideration. Warning! Please make sure to remove the main supply before installation. Otherwise this may cause damage to the product, personal injuries or even death. 2. DESCRIPTION In boiler water, there are precipitated solids at the bottom of the boiler expect dissolved solids. Automatic Bottom Blowdown System ensures right and perfect bottom blowdown of precipitated solids at the bottom of the boiler. It provides key operated manual control and full automatic control. It prevents waste of water and boiler water chemicals, therefore fuel and energy losses because of too much blowdown. Blowdown can be performed at desired ranges and times. The Bottom Blowdown Valve BKV 4000 opens in response to a signal from the Bottom Blowdown Controller BK 4000 according to determined frequency and duration of the blowdown. BKV 4000 MKK v10.01-en 3

3. TECHNICAL SPECIFICATIONS 3.1. BKV 4000 Bottom Blowdown Control Valve Maximum operating temperature : 239 C Maximum operating pressure : 32 bar g Nominal pressure : PN 40 Valve body : Stainless steel (AISI 316) Connection : Flanged Operation mode : 90 rotary spring return pneumatic actuator Type Size A B C D L1 L2 Weight (mm) (mm) (mm) (mm) (mm) (mm) (kg) BKV 4025 DN 25 196 125 122 115 125 240 11 BKV 4032 DN 32 220 145 140 140 130 280 12 BKV 4040 DN 40 250 155 160 150 140 350 14,5 BKV 4050 DN 50 250 170 160 165 150 350 16,6 BKV 4065 DN 65 250 190 160 185 170 350 21 3.2. BLS 4000 Limit Switch Type : 2 microswitches, open/close indicator Enclosure : IP 65 Maximum ambient temperature : 80 C Weight : 150 gr 3.3. BNR 4000 Namur Solenoid Valve Type : 1/4-5/2 Supply voltage : 24 V, 220 V Maximum ambient temperature : 80 C Operation pressure : 6-8 bar Weight : 250 gr BKV 4000 MKK v10.01-en 4

4. INSTALLATION and WIRING 4.1. Installation Figure 1 Connection of Bottom Blowdown System DB2 to a steam boiler Figure 2 General view of BKV 4000 Bottom Blowdown Control Valve BKV 4000 MKK v10.01-en 5

4.2. Air Connection Air connection can be made to port shown in Figure 4 with 1/4' pneumatic tube fitting like in Figure 3. Figure 3 BNR 4000 Namur Solenoid Valve Figure 4 Bottom view of BNR 4000 and air inlet port 4.3. Wiring Remove the screws on the limit switch and remove the cover. Wiring can be made with 2x1 mm 2 normal cable like in Figure 5. Remove the screw (1) and open the namur solenoid valve cable inlet cover. Wiring can be made with 2x1 mm 2 normal cable like in Figure 6. Figure 5 Wiring between controller and limit switch Figure 6 Wiring between controller and namur solenoid valve BKV 4000 MKK v10.01-en 6

5. COMMISSIONING Make sure that all cable connections and air connection are right. After making air connection, it must be checked that air pressure is enough and valve is opened and closed properly by pressing the blue button on the namur solenoid valve (Figure 3 (2)). Make sure that controller operates the valve properly. To make this check please refer to BK 5000 TDS Blowdown Controller Installation and Operating Instructions. 7. MAINTENANCE Warning! Please make sure to remove the main supply before detach the device. Otherwise this may cause damage to the product, personal injuries or even death. When any fault situation occurs or maintenance is necessary, please contact with Vira Valf Service Department. BKV 4000 MKK v10.01-en 7

Vira Heating and Industrial Products Inc. Co. Metal Is Sanayi Sitesi 11. Blok No: 37-39 Ikitelli / Istanbul / TURKEY Tel : +90 212 549 57 70 Fax : +90 212 549 48 58 E-mail Web : info@viravalf.com : www.viravalf.com BKV 4000 MKK v10.01-en 8