Carrier 48PG20-28 specifications Enthalpy Changeover Set Points

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

			%	)
	IDITY	(
HUM

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. 27 — Enthalpy Changeover Set Points

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. 29 — CO2 Sensor Maximum Range Setting Fig. 28 — EconoMi$er IV Controller Potentiometer

and LED Locations

42