Reznor MAPS - A,B,C Users Manual Uživatelský manuál stáhnout pdf (Strana 11)

Form O-MAPSIII&IV Cabinets A/B/C, P/N 257004R8, Page 11

3.6 Compressor

Operation,

Maintenance,

and

Replacement

Compressor Staging

(Cooling) - applies to

all MAPS

III Models

Each MAPS

III system leaves the factory with the compressor staging sequence

shown here for that Model and Size. The compressor will start based upon a call for

cooling to maintain the discharge air temperature setpoint. There is a minimum 240

second ON and OFF time for each stage (not compressor).

Compressor B

Compressor C

Compressor A

Compressor

Dh (Reheat)

FIGURE 4 - Identication of

Compressors by Circuit and

Staging for MAPS

III Models

Compressor

Cabinet

Size

Cooling

Size

(RCB)

Cooling/

Reheat Size

(RDB)

Cooling Staging by Compressor

Circuit

1st 2nd 3rd 4th 5th

060

084 B A A+B -- --

A or B

078

102 B A A+B -- --

090

114 B A A+B -- --

118

142 B A A+B -- --

136

162 B A A+B -- --

160 184 B A A+B A+B+C --

186

210 A B A+C A+B A+B+C

222 A B A+C A+B A+B+C

200

224 A B A+B B+C A+B+C

236 A B A+B B+C A+B+C

190

248 A B A+B -- --

262 A B A+B -- --

216

272 B B+C A+B+C -- --

288 B B+C A+B+C -- --

298

354 B A+B B+C A+B+C --

370 B A+B B+C A+B+C --

410

468 B A+B A+B+C -- --

482 B A+B A+B+C -- --

NOTE: Staging listed by cooling only Models RCB/RDB also

applies to Models RDCB /RDDB with gas heat and Models RECB/

REDB with electric heat.

WARNINGS

For your safety, wear eye protection, gloves, and protective

clothing when handling refrigerant and oil and when brazing.

Have a re extinguisher nearby. See Hazard Levels, page 3.

DANGER

The refrigeration circuits are high pressure systems.

Hazards exist that could result in personal injury or death. It

is therefore required that the removal and installation of this

scroll compressor be performed by a technician qualied in

R-410A refrigerant. See Hazard Levels, page 3.

DANGER

Never use oxygen to pressurize a refrigeration system. Oxygen

can explode on contact with oil and could result in personal injury

or death. When using high pressure gas such as nitrogen for

this purpose, ALWAYS USE A PRESSURE REGULATOR that can

control the pressure down to 1 or 2 psig. Failure to use a regulator

will result in extremely high pressure which could exceed the

burst pressure of the compressor or other system components

and result in personal injury or death. See Hazard Levels, page 3.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 39 40

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