Bryant 569J User Manual

Page 21

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21

If the unit will be operating at 208-3-60 power, remove

the black wire (BLK) from the transformer primary

connection labelled “230” and move it to the connection

labelled “208”. See Fig. 18.

C10079

Fig. 18 -- Control Transformer Wiring

External Devices —

The 569J control transformers provide 24--v NEC Class 2

power sources to energize external control devices. These

devices will include the indoor fan motor contactor (or

control relay). These devices may also include liquid line

solenoid valve (two on 569J***D/E model), economizer

control relay, supplemental electric heater contactors or

control relays and other devices selected by system designer.

Control transformer TRAN1 provides control power through

terminal R to C on the field connection terminal strip TB for

supply fan motor interlock. This source may also be used to

energize economizer control relay and electric heater

contactors or relays. Maximum available power is 20 va.

Check concurrent loadings by external control devices. If the

maximum concurrent loading exceeds 20 va, purchase and

install the accessory Transformer--Relay package (available

for 208/230 and 460--v units).

569J***D/E only: Control transformer TRAN3 provides

control power through terminals A1 (9) and A2 (10) to C for

liquid line solenoids. Maximum available power is 75 va.

These outputs are switched ON/OFF by the Solenoid Valve

Relays.

569J

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