Danfoss PCV-VFGS 2 DN 150-250 Manuel utilisateur

Installation Guide

District Energy VI.JA.N1.02 DEN-SMT/SI

Assembly kit PCV-VFGS 2 DN 150-250

❶❷

❸➍

① ①

③

④

③② ②

②

③

min 300 min 300

◯

②

①

Assembly kit valve unit

PCV-VFGS 2 DN 150-250

Pilot controller

AFP VFG 2 DN 40

Throttling element

Seal pot 1,0 l

Copper

Ø 10×0,8×1500 mm

Stainless steel

Ø 10×0,8×1500 mm

Cu Ø 10 × 1

②

①

③

❺

➐

❻

④

①

Throttling

element

Seal pot

②

③

Installation Guide Assembly kit PCV-VFGS 2 DN 150-250

DEN-SMT/SI VI.JA.N1.02 District Energy

❽PCVP

Pilot controller

Trottling

element

Main controller

◯

Installation in the supplay pipe

◯

A◯

Main controller

Trottling

element

Installation in the return pipe

Pilot controller

PCVD

Main controller

Pilot controller

Trottling

element ◯

PCVSD

Main controller

Pilot controller

Trottling

element ◯

PCVA

Main controller

Pilot controller

Trottling

element

◯

PCVSA

Main controller

Pilot controller

Trottling

element

◯

PCVQ

Main controller

Pilot controller

Trottling

element

◯

Installation Guide Assembly kit PCV-VFGS 2 DN 150-250

District Energy VI.JA.N1.02 DEN-SMT/SI

LANGUAGE

Safety Note

To avoid injury and damage to persons

and devices, it is absolutely necessary

these instructions are carefully read and

observed prior to assembly and commissioning.

Necessary assembly, start-up, and maintenance

work must be performed only by qualiﬁed,

trained and authorised personnel.

Prior to assembly and maintenance work on the

controller, the system must be:

- depressurized

- cooled down

- emptied

- cleaned

Please comply with the instructions of the

system manufacturer or system operator.

Disposal instruction

This product should be

dismantled and its

components sorted, if

possible, in various groups

before recycling or disposal.

Always follow the local disposal regulations.

Deﬁnition of Application

The controller is used for diﬀerential

pressure control of water and water glycol

mixtures for heating, district heating and

cooling systems.

The technical data on the rating plates

determine the use.

Scope of Delivery

Assembly kit PCV-VFGS 2:

• mainvalveassembledwithvalvebody

extension and seal pots,

• throttlingelement,

• impulsetube(throttletosealpotofmain

actuator)

To order additionally:

• pilotvalve,

• pilotvalveactuator,

• sealpotforpilotvalveforT<150°C

• impulsetubesforapilotvalve,

• angetailpieces.

Not included:

• bypasspipes,

• atgaskets,

• screws/nuts.

Bypass pre-assembly ❶

1. Connect a throttling element to the pilot

valveangetoange.

2. Alignowdirection–throttleinfrontofthe

pilot valve.

3. Align valve actuator and throttle impulse

connection as shown on a drawing.

Bypass assembly ❷

1. Prepareangetailpiecesandpipesfor

welding ①.

2. Join bypass pipes to weld tailpieces ②, do

the welding ③.

3. Useatgasketsandscrews/nutstoassemble

bypass pipeline. Align pipes and valve as

shown on a drawing ④.

Holes for bypass ❸

Mark connection points on a main pipe

anddrillholesforbypassow.

Connect bypass ❹

1. Make a join ①.

2. Alignmainandbypassmediaowdirection.

3. Remove main valve and weld bypass pipe to

main pipe ②.

4. Return main valve ❺,checkoworientation.

Main impulse tube mounting ❻

Connect impulse tube from throttling element

to seal pot of a main valve pressure actuator.

Lean impulse tubes into holes on throttle

element and seal pot. Cut one or both ①

to align ②and debur cut edge. Then cut

one or both to align for a joining piece and

debur cut edge ③. Add the joining piece

and tighten all four nuts ④.

Pilot impulse tube mounting ➐

1. Put the steel ring into copper impulse tube

①, press it completely in.

2. Immerse the end into connection screw ②

and tighten with a key ③.

Note:

At max teperatures ≥ 150 °C use a seal pot and connect it

to main ﬂow with stainless steal impulse tube.

Connect pilot valve impulse tubes

for controllers ❽

ENGLISH

Installation Guide Assembly kit PCV-VFGS 2 DN 150-250

ProducedbyDanfossA/S©10/2013

VI.JA.N1.02

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