LEGEND | Potentiometer Default Settings: | ||
DCV — Demand Controlled Ventilation | Power Exhaust | Middle | |
Minimum Pos. | Fully Closed | ||
IAQ — Indoor Air Quality | |||
DCV Max. | Middle | ||
LALS — Low Temperature Compressor | |||
DCV Set | Middle | ||
Lockout Switch | |||
Enthalpy | C Setting | ||
OAT — | |||
|
|
POT — Potentiometer
NOTES:
1.620 ohm, 1 watt 5% resistor should be removed only when using differential enthalpy or dry bulb.
2.If a separate
3.For
Fig. 27 — EconoMi$erIV Wiring
Table 10 — Supply Air Sensor Temperature/
Resistance Values
TEMPERATURE (F) | RESISTANCE (ohms) |
200,250 | |
100,680 | |
53,010 | |
29,091 | |
14 | 16,590 |
32 | 9,795 |
50 | 5,970 |
68 | 3,747 |
77 | 3,000 |
86 | 2,416 |
104 | 1,597 |
122 | 1,080 |
140 | 746 |
158 | 525 |
176 | 376 |
185 | 321 |
194 | 274 |
212 | 203 |
230 | 153 |
248 | 116 |
257 | 102 |
266 | 89 |
284 | 70 |
302 | 55 |
C. EconoMi$erIV Control Modes
Determine the EconoMi$erIV control mode before set up of the control. Some modes of operation may require different sensors. Refer to Table 11. The EconoMi$erIV is supplied from the fac- tory with a supply air temperature sensor, a low temperature compressor lockout switch, and an outdoor air temperature sensor. This allows for operation of the EconoMi$erIV with out- door air dry bulb changeover control. Additional accessories can be added to allow for different types of changeover control and operation of the EconoMi$erIV and unit.
Outdoor Dry Bulb Changeover
The standard controller is shipped from the factory config- ured for outdoor dry bulb changeover control. The outdoor air and supply air temperature sensors are included as stan- dard. For this control mode, the outdoor temperature is com- pared to an adjustable set point selected on the control. If the