Microtech 325 - Inputs and Outputs for Program UV2*** Units; Inputs and Outputs for Program UV3*** Units

Certified Drawing
IM 613 / Page 23 (Rev. 7/99)
Connection
Software
Component Description
Model
IN0 All
Tenant override or remote spt. adjust or
both (optional)
IN1 All Room temperature sensor
IN2 All Discharge air temperature sensor
IN3 All Outdoor air temperature sensor
IN5 All Not Used
IN6 All Not Used
IN7 All Outside air damper position
DI-2 All Day-night changeover device (optional)
DI-3 All
Ventilation lockout (default) or exhaust fan
interlock (optional)
MDL04 High pressure switch (HP)
DI-4 MDL05 Not used
MDL06 Not used
MDL04 Low DX coil temperature switch (T4)
DI-5 MDL05 Low DX coil temperature switch (T4)
MDL06 Not used
RO-1 All Fan relay (R4)
MDL04 Compressor relay (R1 on AZ, R7 on AV/AH)
RO-2 MDL05 Compressor relay (R7)
MDL06 Not used
RO-3 All Not used
RO-4 All Outside air damper open
RO-5 All Outside air damper close
MDL04 Electric heat stage 1
RO-6 MDL05 Not used
MDL06 Electric heat stage 1
MDL04 Electric heat stage 2
RO-7 MDL05 Not used
MDL06 Electric heat stage 2
MDL04 Electric heat stage 3
RO-8 MDL05 Not used
MDL06 Electric heat stage 3
RO-10 All Exhaust fan relay or auxilliary heat relay
Table 13. Inputs and Outputs for Program UV3***
Units (Models AZ or AV/AH)
Table 12. Inputs and Outputs for Program UV2***
Units (Models AR)
Connection
Software
Component Description
Model
IN0 All
Tenant override or remote spt. adjust or
both (optional)
IN1 All Room temperature sensor
IN2 All Discharge air temperature sensor
IN3 All Outdoor air temperature sensor
IN5 All Water-in temperature sensor
IN6 All Water-out temperature sensor
& low refrigerant temperature switch
IN7 All Outside air damper position
DI-1 All
Ventilation lockout (default) or exhaust fan
interlock (optional)
DI-2 All Day-night changeover device (optional)
DI-3 MDL02 Emergency heat switch (SW5)
MDL03 Not Used
DI-4 All High pressure switch (HP)
DI-5 All Low DX coil temperature switch (T4)
RO-1 All Fan relay (R4)
RO-2 All Compressor relay (R1)
RO-3 All Reversing valve
RO-4 All Outside air damper open
RO-5 All Outside air damper close
RO-6
MDL02 Electric heat stage 1
MDL03 Not used
RO-7
MDL02 Electric heat stage 2
MDL03 Not used
RO-8
MDL02 Electric heat stage 3
MDL03 Not used
RO-10 All Exhaust fan relay or auxilliary heat relay
➀
Notes:
1. High pressure switch HP is not installed on AV/AH units.
These units are wired to provide a constant, no-fault
condition.