Table 11 — EconoMi$erIV Sensor Usage
| ECONOMI$ERIV WITH OUTDOOR AIR |
| ECONOMI$ERIV WITH SINGLE | |
APPLICATION | DRY BULB SENSOR |
| ENTHALPY SENSOR | |
| Accessories Required |
| Accessories Required | |
Outdoor Air Dry Bulb | None. The outdoor air dry bulb sensor is factory installed. |
| CRTEMPSN002A00* | |
Differential Dry Bulb | CRTEMPSN002A00* |
| (2) CRTEMPSN002A00* | |
Single Enthalpy | HH57AC078 |
| None. The single enthalpy sensor is factory installed. | |
Differential Enthalpy | HH57AC078 |
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and |
| CRENTDIF004A00* | ||
| CRENTDIF004A00* |
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CO2 for DCV Control using a | CGCDXSEN004A00 | |||
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CO2 for DCV Control using a | CGCDXSEN004A00† | |||
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CGCDXASP001A00** | ||||
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*CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on many different base units. As such, these kits may contain parts that will not be needed for installation.
†CGCDXSEN004A00 is an accessory CO2 sensor.
**CGCDXASP001A00 is an accessory aspirator box required for
Differential Dry Bulb Control
For differential dry bulb control the standard outdoor dry bulb sensor is used in conjunction with an additional acces- sory return air sensor (part number CRTEMPSN002A00). The accessory sensor must be mounted in the return airstream. See Fig. 30.
In this mode of operation, the
Fig. 28 — EconoMi$erIV Controller Potentiometer
and LED Locations
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| C |
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mA | 14 |
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| 100 |
| 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | |
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Fig. 29 — Outside Air Temperature
Changeover Set Points
IAQ | RETURN AIR |
TEMPERATURE | |
SENSOR | OR ENTHALPY |
| SENSOR |
Fig. 30 — Return Air Temperature or Enthalpy
Sensor Mounting Location
Outdoor Enthalpy Changeover
For enthalpy control, accessory enthalpy sensor (part num- ber HH57AC078) is required. Replace the standard outdoor dry bulb temperature sensor with the accessory enthalpy sensor in the same mounting location. See Fig. 25. When the outdoor air enthalpy rises above the outdoor enthalpy changeover set point, the
Differential Enthalpy Control
For differential enthalpy control, the EconoMi$erIV controller uses two enthalpy sensors (HH57AC078 and CRENTDIF004A00), one in the outside air and one in the return airstream on the EconoMi$erIV frame. The EconoMi$erIV controller compares the outdoor air enthalpy to the return air enthalpy to determine EconoMi$erIV use. The controller selects the lower enthalpy air (return or outdoor)