Bryant 558F Enthalpy Changeover Set Points, CO2 Sensor Maximum Range Setting, 13B C, D C B A

85	90	95	100	105	110
(29)	(32)	(35)	(38)	(41)	(43)

CONTROL

CURVE

A

B

C

D

1 8

1 6

1 4

1 2

CONTROL POINT

APPROX. °F (°C)

AT 50% RH

73(23)

70(21)

67(19)

63(17)

												PO	U	N
											R
									P	E		32
								TU
						—	B			30
				LP	Y		28
			HA
		NT		26
	E		4
		2
2	2

2 0

50

(10)

45 D

(7)

40

(4)

35

(2)

						IR		40
			Y	A			3	8
		DR
D				3	6
	3	4

65

(18)

60

(16)

A

55

(13)B

C

4 4

42

70

(21)

1	0	0		0
			9

46

80

(27)

75

(24)

80 70

60

50

D C B A

4 0

RELA TIVE

3 0

HUM IDITY

20

(% )

0 1

HIGH LIMIT

CURVE

35	40	45	50	55	60	65	70	75	80	85	90	95	100	105	110
(2)	(4)	(7)	(10)	(13)	(16)	(18)	(21)	(24)	(27)	(29)	(32)	(35)	(38)	(41)	(43)

APPROXIMATE DRY BULB TEMPERATURE— °F (°C)

Fig. 31 — Enthalpy Changeover Set Points

N1		EXH	TR
N		Set
	2V	10V
P1	EXH		24
			Vac
P		Min	HOT
T1		Pos	+
T	Open
		DCV	1
		Max
	2V	10V
AQ1	DCV
AQ		DCV
SO+		Set	3
SO	2V	10V
SR+	Free		EF
	Cool
SR	B	C
	A	D

TR1

24Vac

COM

_

2

5

4

EF1

CO2 SENSOR MAX RANGE SETTING

	6000
(ppm)	5000
CONFIGURATION	4000						800 ppm
	3000						900 ppm
							1000 ppm
	2000						1100 ppm
RANGE	1000
	0
	2	3	4	5	6	7	8
	DAMPER VOLTAGE FOR MAX VENTILATION RATE

Fig. 33 — CO2 Sensor Maximum Range Setting

Fig. 32 — EconoMi$er IV Control

—28—