Tandem compressorsZZ to ZRT

Replacement G

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RREEPPLLAACCEEMMEENNTT GGUUIIDDEELLIINNEESS:: ZZZZ TTAANNDDEEMM TTOO ZZRRTT TTAANNDDEEMM

1 Introduction ................................................................................................................................................................2 2 ZZ Tandem - Replacement of one compressor.........................................................................................................3 3 Replacement Table....................................................................................................................................................3 4 Available Adapter Kits ...............................................................................................................................................4 5 Adapter Kits For Customer Tandem Designs............................................................................................................5

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1 Introduction

The designation for the Copeland air-conditioning scroll compressors ZR Tandem was changed in January 2004 from ZZ to ZRT. This change comes at the same time as the change of the oil sight glass for the ZR90K* to ZR19M* compressors. The new oil sight glass has an external thread of 1 3/4”. Up to the end of December 2003 the ZZ Tandem were built with different connections for the gas equalisation and the oil equalisation lines. The new design of the ZRT (combination of two similar compressors) and ZRU (uneven combination) tandem have got one common oil and gas equalisation line via the oil sight glass. Previous ZZ Tandem Design New ZRT Tandem Design

Separate connections for oil and gas equalisation Common Equalisation Line

Previous Designation Content New Designation

ZZ 18 ZR 90 – ZR 90 ZRT 180 ZZ 21 ZR 90 – ZR 12 Not Available ZZ 22 ZR 11 – ZR 11 ZRT 220 ZZ 24 ZR 12 – ZR 12 ZRT 240 ZZ 25 ZR 90 – ZR 16 Not Available ZZ 28 ZR 12 – ZR 16 ZRU 280 ZZ 31 ZR 12 – ZR 19 ZRU 310 ZZ 32 ZR 16 – ZR 16 ZRT 320 ZZ 35 ZR 16 – ZR 19 ZRU 350 ZZ 38 ZR 19 – ZR 19 ZRT 380

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2 ZZ Tandem - Replacement of one compressor

For the replacement of one compressor from a ZZ Tandem, Copeland recommends the following procedure: Replace the faulty tandem version compressor with a suitable single compressor (see the replacement table

below). Remove the present gas equalisation and the oil equalisation lines. Use the Copeland adapter kit to install the equalisation lines (see the following pages). Shut-off the connection for the gas equalisation at the remaining compressor with the blanking cap B (over page)

or crimp and braze the tube. Shut-off the connection for the oil equalisation at the remaining compressor with the blanking cap C (over page). Assemble the common gas and oil equalisation line:

- Remove the oil sight glasses out of both compressors. - Install the adapter D and the o-ring on the oil sight glass connection of the compressors. - Use the teflon gasket to install the common equalisation line E on the Rotalock connection of the adapter D. - The common equalisation line E is available in two different lengths.

3 Replacement Table

The following chart shows the replacement of the different BOM- versions

ZZ- Tandem BOM

Rotalock Compressor

BOM Used on ZZ

Replacement Compressor

BOM

Module

870 570 551 120/240 V

871 570 551 120/240 V

840 540 561 24 V AC

841 540 561 24 V AC

C.5.5.1/1104/E 3

4 Available Adapter Kits

Adapter Kit A ZZ 18 – ZZ 28, ZZ 32 Ident number 8548206 ZZ 31, ZZ 35, ZZ 38 Ident number 8548217 See also the table on the next page. Installation of the oil and gas equalisation line via the oil sight glass connection of the compressor.

Contents: All components are included in kit A. Blanking cap B Ident number 8545003 To shut-off the compressor connection for the gas equalisation.

Adapter D Adapter for the oil sight glass connection of the compressor.

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Blanking cap CIdent number 8502420 To shut-off the compressor connection for the oil equalisation.

Common Equalisation Line E

4

Number Valid Description Content Quantity

8548206 ZZ 18 - ZZ28, ZZ32

Adapter kit A for the common oil and gas equalisation line, including the complete equalisation line E

Gaskets, cap nuts, blanking caps, adapters, complete equalisation line 425mm

1 x per tandem

8548217 ZZ31, ZZ35, ZZ38

Adapter kit A for the common oil and gas equalisation line, including the complete equalisation line E

Gaskets, cap nuts, blanking caps, adapters, complete equalisation line 455mm

1 x per tandem

5 Adapter Kits For Customer Tandem Designs

The following adapter kits are available: Adapter Kit F Ident number 8548228 Contents: 2 x O-rings, 2 x adapter D, 2 x gaskets, 2 x cap nuts, 2 x adapters Rotalock to braze Adapter kit for the common oil and gas equalisation line. One kit per tandem.

Number Valid Description Content Quantity

8545003 Blanking Cap B

all To close the gas equalisation connection on the compressor

Cap nut 1 ¾” Rotalock, gasket 1 ½”, blanking plate ∅ 42 mm

1 x per compr.

8502420 Blanking Cap C

all To close the oil equalisation connection on the compressor

Cap nut ¾” Rotalock, gasket 0,56”, blanking plate ∅ 17 mm

1 x per compr.

8548228 Adapter

Kit F

all For the common oil and gas equalisation line, including the adapters D

Adapters 1 1/8” to 1 ¾” Rotalock,O-rings 21,89 mm, gaskets 1 ½”, cap nuts 1 ¾” Rotalock, adapters 1 ¾” Rotalock to 7/8” brazed

1 x per tandem

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Copeland Marketing & Sales - 27, Rue des Trois Bourdons - B 4840 Welkenraedt, Belgium

Tel. +32 (0) 87 305411 - Fax +32 (0) 87 305506 - internet: www.ecopeland.com - email: eCommerce@eCopeland.com

The Emerson logo is a trademark and service mark of Emerson Electric Co. Copeland Corporation is a division of Emerson Electric Co. Copeland is a registered trademark and Copeland Scroll is a trademark of Copeland Corporation. All other trademarks are the property of their respective owners. Information contained in this brochure is subject to change without notification.

© 2004 Copeland

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