Danfoss Type DCR Filter Drier Shell With Cross Gasket Installation Guide

Danfoss Type DCR Filter Drier Shell With Cross Gasket

Specifications

• Product Name: Filter drier, shell with cross gasket Type DCR, DCR/H, DCR E
• Compatible Refrigerants: R1233zd, R134a, R407A, R407C, R407F, R407H, R410A, R422B, R422D, R448A, R449A, R449B, R450A, R452A, R513A, R515B, R1234yf, R1234ze, R32, R444B, R452B, R454A, R454B, R454C, R455A, R457A, R516A, etc.
• Working Pressure Range: 7-13 bar (PS) / 100-188 psig (MWP)

Product Usage Instructions

Installation

1. Ensure the correct gasket is selected for your model (DCR/DCR/H or DCRE).
2. Apply a small amount of oil to the gasket before assembly using synthetic POE or PVE oil.
3. Finger-tighten all bolts following the recommended tightening torques for each step.

Brazing/Welding

1. Use copper or steel connectors for brazing.
2. When brazing, keep flames away from the body.
3. Use Silver-flo 55 brazing material with Easy-flow flux containing a minimum of 5% Ag silver.

Usage Restrictions

1. DCRE can only be used with A2L refrigerants when the solid core is in place.
2. DCRE cannot be used as a receiver.
3. Do not install the gasket before soldering.

Refrigerants

DCR Standard (A1, Group 2)

R1233zd, R134a, R407A, R407C, R407F, R407H, R410A, R422B, R422D, R448A, R449A, R449B, R450A, R452A, R513A, R515B, etc.

For other refrigerants, please contact Danfoss representative.

Media Temperature: -40 – 70 °C / -40 – 160 °F

DCR/H (A2L, Group 1) – UL listed, for American market use only R1234yf, R1234ze, R32, R444B, R452B, R454A, R454B, R454C, R455A, R457A, R516A, etc.

Also compatible with DCR Standard Refrigerants.

DCRE (A3, A2L, Group 1) – PED approved

R1234yf, R1234ze, R32, R444B, R452B, R454A, R454B, R454C, R455A, R457A, R516A, R290, R600a, etc.

Also compatible with DCR Standard Refrigerants.

Design

DCR and DCR/H

DCR E

Inner taper of core always facing towards filter outlet. This applies for all DCR Families.

Installation

Type

| L minimum| Maximum working pressure PS / MWP [bar] / [psig]
---|---|---
[mm]| [in]
DCR DCR/H| 048| 170| 7| 46 / 667
DCR DCR/H| 096| 310| 13| 46 / 667
DCR DCR/H| 144|

310

|

13

| 35 / 507 1)
46 / 667 2)
DCR DCR/H| 192|

310

|

13

| 28 / 406 1)
40 / 580 2)
DCRE| 048| 170| 7| 50 / 725

1. For usage with strainer or as a receiver application
2. For “drier” application using all the permissible cores
3. For either 1 or 2

MWP shall not be less than the pressure outlined in sect 9.2 of ANSI/ASHRAE 15 for the refrigerant used in the system. After charging, the system shall be marked with the refrigerant and oil used.

“The DCRE can only be use for A2L when the solid core is placed. DCRE is not allowed to be used as receiver.”

Brazing

Welding

Customer best practices will still be needed:

• Use wet wrap when installing.
• Braze the joints.
• Let them cool down.
• Clean the brazing /welding area after the installation (remove remaining flux with a brush).
• This is an important operation and needs to be done with great care to remove all remaining flux.
• Paint / Anti-corrosive needs to cover all open steel parts, areas where the black original paint has been burnt due to brazing and at least 3 cm approx of the copper.
• Paint the joints twice.

How to tighten the bolts

Gasket

Do not install gasket before soldering.

Note: Confirm correct top cover Gasket is selected. There are 2 gaskets:

• DCR and DCR/H
• DCRE

Recommendation

Apply a small amount of oil to the gasket before assembly.
Preferably synthetic POE or PVE oil, although any general-purpose oil can be used.

Note: Do not reuse the gasket

Optional Fuse and/or Plug, recommended tightening torques:
Fuse: 1/4”NPT – 3/8” Flare: 20 Nm / 14.75 ft-lb applying 2 to 3 wraps of teflon tape.
Plug: 1/4” NPT: 50 Nm / 36.87 ft-lb applying 2 to 3 wraps of teflon tape.

Reference

The torque values mentioned only apply to bolts supplied by Danfoss.

Each step must be applied following the sequence of the image.

FAQ

Q: Can I reuse the gasket during reassembly?

A: No, the gasket should not be reused. Always use a new gasket for assembly.

Q: What type of oil should be applied to the gasket?

A: It is recommended to use synthetic POE or PVE oil on the gasket before assembly. General-purpose oil can also be used as an alternative.

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