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Instructions
Pilot-controlled PCVQ
DN 100 - DN 250
PN 16 / PN 25
Table of Contents
73696700
DH-SMT/SI
1
Safety Notes ...................................................... 2
2
Definition of Application ............................ 2
3
Description .......................................................... 2
3.1
Construction ......................................................... 2
3.2
Mode of Operation ........................................... 2
4
Technical Data .................................................. 3
5
Scope of Delivery ............................................. 3
6
Assembly ............................................................. 4
6.1
Prior to Assembly ............................................... 4
6.2
Installation Place ................................................ 4
6.3
When Installaling observe ............................. 4
6.4
Impulse Tube Installation ................................ 4
6.5
Insulation .............................................................. 4
6.6
Installation Scheme ........................................... 5
6.7
Assembly Drawings, Dimensions ................ 6
7
Start-up ..................................................................8
7.1
Required static Pressure .................................. 8
VI.JA.G2.02
© Danfoss 11/2006
7.2
Leak and Pressure Test ...................................... 8
7.3
Filling the System ............................................... 8
7.4
Start-up .................................................................. 8
7.5
Putting out of Operation ................................. 8
7.6
Flow Rate Adjustment ...................................... 9
7.7
Flow Adjusting Curves ................................... 10
7.8
Sealing ................................................................. 12
7.9
Adjustement of the Throttle Valves .......... 12
7.10 Function Test ..................................................... 12
8
Trouble Shooting ......................................... 13
9
Actuator, Trims .............................................. 14
9.1
Mounting Actuator Valve ............................. 14
9.2
Replacement of Trim Valve VFQ 21 ........... 16
9.3
Mounting Actuator AVP-F ............................ 17
9.4
Replacement of Trim Valve AVP-F .............. 17
1
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Summary of Contents for Danfoss Pilot-controlled PCVQ
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Page 1: Table Of Contents
Instructions Pilot-controlled PCVQ DN 100 - DN 250 PN 16 / PN 25 Table of Contents Safety Notes ............2 Leak and Pressure Test ........8 Definition of Application ......2 Filling the System ..........8 Description ............2 Start-up ..............8 Construction ............ -
Page 2: Safety Notes
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Safety Notes To avoid injury of persons and damages to the device, it is absolutely necessary to carefully read and observe these Instructions. Necessary assembly, start-up, and maintenance work may be performed only by qualified and... -
Page 3: Technical Data
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Technical Data Technical data, see rating plates and the PCV data sheet. Scope of Delivery DN 100, DN 125 Assembly kit valve unit PCV-VFQ 21 Pilot controller DN 25... -
Page 4: Assembly
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Assembly 6.1 Prior to Assembly: 6.4 Impulse Tube Installation See installation scheme, section 6.6. For CU pipes Ø 10 × 1, insert sockets 1 on both Depressurized system before any sides. -
Page 5: Installation Scheme
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Assembly Installation Scheme Installation in the Return Line Throttling valve Throttling element Throttling valve (only by DN 150 - 250) Valve unit PCV - VFQ 21 Bypass controller... -
Page 6: Assembly Drawings, Dimensions
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Assembly Assembly Drawings, Dimensions DN 100 - DN 125 CU pipe Ø 6 ×1 Lay when assembling. Cu pipe Ø 10 × 1 Lay when assembling. DN 25 SW 50... - Page 7 Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Assembly (continuous) DN 150 - DN 250 CU pipe Ø 6 × 1 Lay when assembling. Cu pipe Ø 10 × 1 Lay when assembling. DN 40: pipe Ø 48.3 × 3.2 Material: ST 35.8...
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Page 8: Start-Up
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Start-up 7.1 Required Static Pressure 7.3 Filling the System The static pressure p1 in front of the controller must not fall below 1.5 bar (excess pressure). Note: Non-observance may lead to cavitation and The controller 4 is closed when no pressure is damages in the throttling element 1. -
Page 9: Flow Rate Adjustment
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Start-up 7.6 Flow Rate Adjustment 4. Turn the adjusting throttle by this number of rotations to the left. The setting of the setpoint for the flow rate limitation is made by means of flow adjusting curves (see section 7.7) or a heat meter (see... -
Page 10: Flow Adjusting Curves
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Start-up 7.7 Flow Adjusting Curves DN 100 kvs 125 / DN 125 kvs 160 / DN 150 kvs 320 DN 100 kvs 125 / DN 125 kvs 160 / DN 150 kvs 320 ∆... - Page 11 Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Start-up Adjustment by means of a flow rate 5. Adjust the flow rate limitation by turning the measuring device: adjusting throttle 6: Procedure Turning to the right 7, reduces the flow rate.
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Page 12: Sealing
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Start-up 7.8 Sealing 7.10 Function Test The setpoint adjuster may be sealed. Flow rate The adjusted flow rate must not be exceeded if the system is completely open. -
Page 13: Trouble Shooting
9.1. 3. Replace actuator. The trim can be replaced by qualified personnel up to DN 125. From DN 150 replacement should be carried out by the Danfoss service personnel. VI.JA.G2.02 DH-SMT/SI © Danfoss 11/2006... -
Page 14: Replacement Of Valve, Actuator, Trims
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Replacement of Valve, 9.1 Dismounting and Mounting Actuator and Prior to assembly check cone 5 ! Actuator, Trims Valve Note: The springs 1 in the actuator are pre-stressed. - Page 15 Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Replacement of Valve, Valve unit DN 150–250 Actuator, Trims Then, return the actuator by approx. 1 rotation (to the left) 3. Align actuator, observe position of the control lines connections.
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Page 16: Replacement Of Trim Valve Vfq 21
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Replacement of Valve, 9.2 Replacement of Trim Valve VFQ 21 Installing the trim: Actuator, Trims The trim can be replaced by qualified personnel Mounitng is carried out in reverse order. -
Page 17: Dismounting
Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) Replacement of Valve, 9.3 Dismounting, Mounting 9.4 Replacement of Trim Actuator, Trims Actuator AVP-F Valve AVP-F Dismounting 1. Dismount impulse tubes. 2. Loosen union nut 1. 3. Remove actuator. - Page 18 Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) VI.JA.G2.02 © Danfoss 11/2006 DH-SMT/SI...
- Page 19 Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) VI.JA.G2.02 DH-SMT/SI © Danfoss 11/2006...
- Page 20 Instructions Pilot-controlled PCVQ DN 100 - DN 250 (PN 16, PN 25) VI.JA.G2.02 © Danfoss 11/2006 DH-SMT/SI...