Carrier 48PG20-28 specifications EconoMi$er IV Sensor Usage

DAMPER

ASSEMBLY

WIRE

HARNESS

DAMPER	WIRE TIES
ACTUATOR
	PL7

ECONOMIZER BLOCK OFF

PL7

OUTSIDE AIR

ENTHALPY

INDOOR AIR

ENTHALPY

Fig. 23 — EconoMi$er IV Component Locations (Exploded View)

mA

MAT LOCATION

19

18	LED ON
	D
17
16	LED OFF	LED ON
		C
15
14		LED OFF	LED ON
13			B
12			LED OFF	LED ON
				A
11

OAT LOCATION

10

LED OFF

9

100

40

45

50

55

60

65

70

75

80

85

90

95

DEGREES FAHRENHEIT

Fig. 24 — Sensor Locations (OAT and MAT)

Fig. 25 — Temperature Changeover Set Points

Table 28 — EconoMi$er IV Sensor Usage

ECONOMI$ER IV WITH OUTDOOR AIR

ECONOMI$ER IV WITH SINGLE

APPLICATION

DRY BULB SENSOR

ENTHALPY SENSOR

Accessories Required

Accessories Required

Outdoor Air Dry Bulb

None. The outdoor air dry bulb sensor is factory installed.

CRTEMPSN002A00*

Differential Dry Bulb

CRTEMPSN002A00*

(2) CRTEMPSN002A00*

Single Enthalpy

HH57AC078

None. The single enthalpy sensor is factory installed.

Differential Enthalpy

HH57AC078

and

CRENTDIF004A00*

CRENTDIF004A00*

CO2 for DCV Control using a

33ZCSENCO2

33ZCSENCO2

Wall-Mounted CO2 Sensor

CO2 for DCV Control using a

33ZCSENCO2†

OR

33ZCSENCO2†

OR

and

CRCBDIOX005A00††

and

CRCBDIOX005A00††

Duct-Mounted CO2 Sensor

33ZCASPCO2**

33ZCASPCO2**

*CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on many different base units. As such, these kits may contain parts that will not be needed for installation.

†33ZCSENCO2 is an accessory CO2 sensor.

**33ZCASPCO2 is an accessory aspirator box required for duct-mounted applications. ††CRCBDIOX005A00 is an accessory that contains both 33ZCSENCO2 and 33ZCASPCO2 accessories.

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