Carrier 30GN040-420 operating instructions Installation, 4 In/4 Out Module SIO

LEGEND

COMM Ð Communications Bus

PWR Ð Power

Fig. 22 Ð 4 In/4 Out Module (SIO)

If accessory unloaders are desired, an accessory unloader package is used. Package includes a suction cutoff unloader head package. The 24-v coil in the package can be used for 040-110, 130 (60 Hz), and associated modular units (Table 1). A 115 v or 230 v coil must be used for 130 (50 Hz), 150-210, and associated modular units (Table 1). Coil voltage depends on control circuit voltage. Consult cur- rent Carrier price pages for appropriate part numbers.

NOTE: The accessory package will include all necessary com-

ponents and wiring with the following exceptions: The ®eld must provide screws, and on the 130-210, and associated modu- lar units, the ®eld must also supply a 20 vdc (part number HK35AB001) unloader relay and wire (90° C or equivalent).

Installation

1.Be sure all electrical disconnects are open and tagged be- fore any work begins. Inspect the package contents for any damage during shipping. File a claim with the ship- per if damage has occurred.

2.For ease of installation, factory-supplied wiring for the additional unloader is provided in the compressor harness.

3.Install the additional unloader cylinder head on the lead compressor, A1 or B1, according to instructions provided by the compressor manufacturer in the accessory package.

4.Continue installation per either 040-110, 130 (60 Hz) units or 130 (50 Hz), 150-210 units section as appropriate.

040-110, 130 (60 Hz) UNITS (And Associated Modular Units)

1.Wire the solenoid before any ®eld wiring begins. Wiring between components and control box must be enclosed in conduit. All local electrical codes and National Elec- trical Code (NEC) must be followed. Factory wires are provided in the compressor harness to connect the sole- noid. These wires are in the compressor control box.

2.Wire the control side. Open the left side control box door and remove inner panel. Using the holes provided and ®eld-supplied screws, install ®eld-supplied transformer above the DSIO-LV on the control panel.

Wire the primary side of the transformer in parallel with TRAN4. See Fig. 23. This supplies transformer with proper line voltage. Be sure to connect proper tap of the trans- former to ensure supply of proper secondary voltage.

Wire the secondary side of transformer to DSIO-LV - J5-9, and a jumper from DSIO-LV - J5-9 to DSIO-LV - J4-9. Wire the secondary common to TB7-2. Connect the trans- former ground to ground hole supplied near the trans- former. These connections provide DSIO with necessary power to energize the solenoid coils.

3.When all connections are made, check for proper wiring and tight connections. Replace and secure inner panel. Restore power to unit.

4.Con®gure the processor. With the addition of extra un- loaders, the unit con®guration has changed. To change the con®guration of the processor, enter the service func- tion using the keypad and display module. Before any changes can be made, the LOCAL/ENABLE-STOP- CCN switch must be in the STOP position, and the ser- vicer must log on to the processor.

a.Press . Keypad LCD displays the word

PASSWORD.

b.Enter . Keypad LCD displays

LOGGEDON.

c.To change con®guration, press . Keypad LCD displays FLD CFG.

d.If an additional unloader was added to compressor

A1, press until NULA 1 appears in keypad dis-

play. Press for the number of unloaders on circuit A. Keypad display now reads NULA 2.

e.If an additional unloader was added to compressor

B1, press until NULB 1 appears in keypad dis-

play. Press for the number of unloaders on circuit B. Keypad display now reads NULB 2.

f.When con®guration is complete, press . Key-

pad display reads LOGGEDON. Press until key-

pad display reads LOG OFF. Press . Keypad dis- play reads EXIT LOG.

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