Bryant 569J - page 20

All Units —

Voltageto compressor terminals during operation must be

within voltage range indicated on unit nameplate. See

Tables 10 and 11. On 3-phase units, voltages between

phasesmust be balanced within 2% and the current within

10%. Use the formula shown in the legend for Tables 10

and 11, Note 4 (see page 23) to determine the percent of

voltage imbalance. Operation on improperline voltage or

excessive phase imbalance constitutes abuse and may

cause damage to electrical components. Such opera tion

would invalidate any applicable Bryant warranty.

Field Control Wiring —

569J unit control voltage is 24 v. See Fig. 33

(569J***A/B) and Fig. 34 (569J***D/E) for typical field

control connections and the unit’s label diagram for

field-supplied wiring details. Route control wires to the

569J unit through the opening in unit’s end panel to the

connections terminal board in the unit’s control box.

Remainder of the system controls connection will vary

according to the specific construction details of the indoor

section (air handler or packaged fan coil). Fig. 16

(569J***A/B) and Fig. 17 (569J***D/E) depict typical

connections to a Bryant 524J fan coil unit. Plan for field

connections carefully and install control wiring correctly

per the project plan. Additional components and

supplemental transformer accessorymay be required.

The 569J unit requires an external temperature control

device. This device can be a thermostat (field-supplied) or

a thermostat emulation device provided as part of a

third--partyBuilding Management System.

Thermostat—

Install a Bryant-approved accessorythermostat according

to installation instructions included with the accessory.

Locate the thermostat accessory on a solid wall in the

conditioned space to sense average temperature in

accordance withthe thermostat installation instructions.

The 569J***A/B unit is a single--stage cooling unit. If no

economizer function is required, select a single --stage

cooling thermostat. If an integrated economizer function is

required, select a two--stagecool ing thermostat.

The 569J***D/E is a dual--circuit, two-stage cooling unit.

Select a two—stage cooling thermostat.

Select a thermostat cable or equivalent single leads of

different colors with minimum of four leads for 569J***A/B

or five leads for 569J***D/E unit. Check the thermostat

installation instructions for additional features which might

require additional conductors in the cable.

For wire runs up to 50 ft. (15 m), use no. 18 AWG

(American Wire Gage) insulated wire (35°C minimum).

For50to75ft.(15to23m),useno.16AWGinsulated

wire (35°C minimum). For over 75 ft. (23 m), use no. 14

AWG insulated wire (35°C minimum). All wire sizes

larger than no. 18 AWG cannot be directly connected to

the thermostat and will require a junction box a nd splice

at the thermostat.

Note 1: Connect only if thermostat requires 24-vac power source.

Note 2: Connect W1 and W2 if supplemental heaters are installed

Field Wiring

(Note 1)

(Note 2)

C10985

Fig. 16 --Typical Remote ThermostatConnections

— 569J***A/B

Note 1: Typical multi-function marking. Follow manufacturer’s configuration

instructions to select Y2.

Note 2: Connect only if thermostat requires 24-vac power source.

Note 3: Connect W1 and W2 if supplemental heaters are installed

Field Wiring

(Note 1)

(Note 2)

(Note 3)

C10078

Fig. 17 --Typical Remote ThermostatConnections

— 569J***D/E

569J