Advertisement
Quick Links
Advertisement
Summary of Contents for IMI TA DA 516 DN15
- Page 1 www.imi-hydronic.com...
- Page 2 www.imi-hydronic.com...
- Page 3 www.imi-hydronic.com...
- Page 4 www.imi-hydronic.com...
- Page 5 www.imi-hydronic.com...
- Page 6 www.imi-hydronic.com...
- Page 7 52 762-303 09.2014 DA 516 (DN 15 -150) Installation, maintenance and operating instructions...
-
Page 8: Installation
General • High-performing and compact, these differential pressure controllers for heating and cooling systems are particularly effective in situations requiring high temperatures and/or pressure drops. • They are also suitable for use on the primary and secondary side in district heating and cooling systems. -
Page 9: Installation Preparation
• The valve may be installed in a vertical, horizontal or inclined pipeline. • The valve should be installed to match the direction of flow, with the flow direction arrow shown on the valve body or on the identification plate. •... -
Page 10: Threaded Joints
Threaded Joints • The valves are supplied with the external inch threads ends. • To avoid distortion of the valve during installation, the valve must be held with the proper tools so that the valve is in line. • Care should be taken to avoid ‘pipe ending’. This is a condition that occurs when the pipe is screwed in too far resulting in distortion to the valve seat. - Page 11 When the isolation valve on the outlet side of the DA valve is fully open and the valve is under pressure, vent the valve by using an 8 mm spanner. • Slowly open the isolation valve at the inlet side of the DA. •...
- Page 12 Pre-commission • Check that the arrow on the valve body is in the same direction as the flow. • Check that the strainer basket is clean. • Slowly fill the system with the tap water according to the «Start-up procedure» •...
- Page 13 Presetting DN 15 - 50 Factory setting is on maximum value of ∆p range. Example of presetting the valve DA 516 DN 25 ∆p 10-100 kPa, to 50 kPa is done as follows: • Unscrew the fixing screw with 2 mm allen key. •...
- Page 14 Presetting DN 65 - 125 • Factory setting is on half value of Δp range. Example of presetting the valve DA 516 DN 100 Δp 10-100 kPa, to 50 kPa is done as follow: • Use the two sticks delivered with the valve and set it into the holes on the setting nut. •...
- Page 15 Presetting DN 150 Factory setting is on minimum value of ∆p range. Example of presetting the valve DA 516 DN 150 ∆p 10-100 kPa, to 50 kPa is done as follow: • Remove the plomb wire and protect cover from the pilot. •...
- Page 16 Measuring • For precise ∆p setting use TA-SCOPE or U-tube and measure the ∆p over measuring points. • Be sure, that the system is under working pressure and all isolation valves are fully open. • Connect TA-SCOPE or U-tube on the valve with measuring probes. DN 15-50...
- Page 17 DN 65-125 DN 15-125 DN 150 DN 150 • Before measuring the ∆p , be sure that the isolation valves are fully open and that bypasses are closed. • Be aware that complete pressure drop in the system between p1 and p2 at design flow should not be bigger than max.
-
Page 18: Maintenance
Maintenance The valves are maintenance free under the condition that they are used within their normal application. Troubleshooting Guide DN 15-150 1. Valve is fully open and design flow is not able to be measured • Check pump head is sufficient and in manual mode •... - Page 19 Table 3 Markings on labels 15/20 25/32 40/50 Logo - TAH Temp. Δp ...
- Page 20 Notes:...
- Page 21 Start-up procedure - fill form 1. Pre-commission Check 1. Install the valve in the pipeline according by the arrow on the label (flow direction) 2. Check that the strainer basket is clean 3. Slowly fill the system with the tap water 4.
- Page 22 We reserve the right to introduce technical alterations without previous notice. www.imi-hydronic.com...