
Modular Hi-Rise Replacement Series – MIY
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
19
SECTION FOUR — Start-Up, Cont’d.
Motor Control Voltage – Proportional/Analog Thermostat Settings
NOTES: 1. The above minimum and maximum settings must be field-programmed into the proportional fan thermostat to ensure
proper operation and adherence to published values.
2. The minimum voltage settings must NOT be reduced further; otherwise, the electric heater will not maintain sufficient
airflow. This can result in frequent nuisance tripping of the thermal cut-out protection, which temporarily disables the
electric heater.
3. Increasing voltage settings of High fan speed may result in higher sound power values than what are published by the
manufacturer.
4. Please contact the Factory for special CFM or external static pressure applications.
Unit Model
and Size
Total # of Coil
Rows
Unit Voltage
(V/PH/Hz)
Proportional/Analog T’stat
Fan Speed Limits (VDC)
Tested CFM values at 0” ESP
Max
Min
High
Low
MIY04
3
120V/1/60
6.37
3.65
386
203
MIY04
4
120V/1/60
6.28
3.63
380
202
MIY04
5
120V/1/60
6.28
3.63
374
199
MIY04
3
208V/1/60
7.23
4.14
384
201
MIY04
4
208V/1/60
7.12
4.20
375
200
MIY04
5
208V/1/60
7.41
4.20
378
198
MIY04
3
240V/1/60
6.85
4.14
387
210
MIY04
4
240V/1/60
6.89
4.13
379
203
MIY04
5
240V/1/60
7.04
4.25
384
208
MIY04
3
277V/1/60
7.15
4.14
389
203
MIY04
4
277V/1/60
7.04
4.22
377
207
MIY04
5
277V/1/60
7.05
4.25
380
205
Figure 12. Proportional Fan Thermostat
Neptronic thermostat offered
by manufacturer
(Field Programmed)