Danfoss OFC Installation guide

Installation guide

020R5421

Check and Stop valve

Type OFC

Refrigerant:

For a complete list of approved refrigerants, visit http://store.danfoss.com/ and search for individual code

020R5 421

numbers, where refrigerants are listed as part of product details. Oil: OFC valve is designed for an oil-free environment

020R5 421

Media Temperature:

Min. 0 ⁰C / 32 ⁰F Max. 90 ⁰C / 194 ⁰F, short term up to 100⁰C / 212⁰F

Contents of accessory box

• Outlet ﬂange for 3 1/8 in. copper tube

• Outlet ﬂange fasteners

• O-ring for outlet ﬂange

• O-ring lubrication (2 gram)

• Additional check valve springs (2 pcs):

- Yellow spring, for 45⁰ down orientation

- Red spring, for horizontal orientation

Interface Connections:

Install valve directly on Danfoss Turbocor compressor, picture shown with vertical down installation. All fasteners and bolts require stainless steel. Bolts with minimum class A2-70.

NOTE: Protection of entire valve including steel flange is recommended after installation for outdoor use.

Max. Working Pressure:

PS/MWP = 23 bar / 334 psig

Reference speciﬁc compressor requirements

Ball valve clocking may be changed by removing bolts and rotating ball valve housing without retracting the ball valve assembly away from the elbow.

NOTE: refer to check valve orientation options below

Torque: 38 Nm ± 4 Nm

Staging Port: Bolt size – M10x1.5 Torque: 38 Nm ± 4 Nm

Outlet Flange Fasteners: Torque - 110 Nm

Info for UK customers only: Danfoss Ltd. Oxford Road, UB9 4LH Denham, UK.

Outlet Flange Brazing:

Place outer flange on evenly cut copper pipe

NOTE: ensure flange is not mounted on main housing during brazing

Min 5% Ag

Orientation:

NOTE: Check valve spring must be changed when using any

orientation other than vertical downing

Danfoss

Horizontal Red spring

45° down Yellow spri

20R01

45° up

Not allowed

Horizontal

Red spring

45° down

Yellow spring

Vertical up

Not allowed

Vertical down Blue spring (as delivered)

45° up

Not allowed

When changing check valve spring:

1. Remove check valve insert from main housing

2. Remove check valve head

3. Remove spring and replace with correct color based on intended orientation

4. Replace check valve head and insert

5. Install outlet flange, O-ring and fasteners

Main housing

Check valve insert

NOTE: Use silicone lubricant spray at O-ring if needed

Always replace lock ring and cap after opening/ closing the ball valve

Check valve head

Check valve spring

Outlet ﬂange, O-ring and fasteners

NOTE: Apply provided lubrication to O-ring