Bryant manual TYPICAL WIRING SCHEMATICS — 549B, 549C cont, a48-7910, a50-8053

TYPICAL WIRING SCHEMATICS — 549B, 549C (cont)

a48-7910

LEGEND	NOTE:
IAQ — Indoor Air Quality	Potentiometer Defaults Settings:
	Power Exhaust	Middle
LA — Low Ambient Lockout Device
	Minimum Pos.	Fully Closed
POT— Potentiometer
	DCV Max.	Middle
OAT— Outdoor-Air Temperature
	DCV Set	Middle
RAT — Return-Air Temperature
	Enthalpy	C Setting

NOTES:

1.620 ohm, 1 watt 5% resister should be removed only when using differen- tial enthalpy or dry bulb.

2.If a separate field-supplied 24v transformer is used for the IAQ sensor power supply, it cannot have the secondary of the transformer grounded.

3.For field-installed remote minimum position POT, remove black wire jumper between P and P1 and set control minimum position POT to the minimum position.

EconoMi$erIV Wiring — 549B036-120, 549C024-060

549B, 549C

500 OHM RESISTOR

NOTE 1

RUN

NOTE 2 -

+

50HJ540573

ACTUATOR

ASSEMBLY

OPTIONAL CO2

SENSOR 4 - 20 mA

OUTPUT

DIRECT DRIVE

ACTUATOR

	BLACK	4
		3
		5
	BLUE	2
		8
VIOLET		6
PINK		7
	RED	1
		10
YELLOW		11
		9
	WHITE	12

a50-8053 ECONOMISER2 PLUG

NOTES:

1.Switch on actuator must be in run position for economizer to operate.

2.50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.

EconoMi$er2 Wiring — 549B036-120, 549C024-060

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