Installation manual

Page 80 IM-487
Final Control Settings
When all start-up procedures have been completed, set the
controls and program the MicroTech II controller for normal
operation. Use the following list as a guide; some items may
not apply to your unit. For more detail, refer to OM696.
1. Turn system switch S1 & S7 to "on."
2. Turn gas furnace switch S3 to "auto" or turn electric heat
switch HS1 to "on."
3. Turn compressor control switches CS1 and CS2 to "on."
4. Turn liquid line solenoid switches PS1, PS2, and PS3 to "on."
5. Set the electromechanical (Honeywell H205) enthalpy
control (OAE) as required (A, B, C, or D). Set the solid-
state (Honeywell H705/C7400) enthalpy control
(OAE/ RAE) past "D".
6. Set the heating and cooling parameters as required for
normal unit operation:
a. Temperature \ Zone Cooling \
b. Temperature \ Zone Heating \
c. Temperature \ Discharge Cooling \
d. Temperature \ Discharge Heating \
7. Set the low ambient compressor lockout setpoint as
required in menu , Temperature \ OA Damper \ OATComp
Lock = . Do not set it below 50°F (10°C) unless the unit
is equipped for low ambient operation.
8. Set the high ambient heat lockout temperature setpoint,
Temperature \ Zone Heating \ OATHtg Lock = as
required.
9. Set the alarm limits as required in
Setup/Service \ Alarm Limits \ .
10.Set the compressor lead/lag function as desired using key-
pad menu Setup/Service \ Compressor Setup \ Lead Cir-
cuit= and Setup/Service \ Compressor Setup \
CompCtrl=. Refer to "Compressor Staging" in Bulletins
OM 137 and OM 138.
Note: If the unit has hot gas bypass on circuit #1 only,
lead circuit must always be "#1".
11.Set the duct static pressure control parameters as required
in keypad menu Airflow \ Duct Pressure \.
12.Set the building static pressure control parameters as
required in keypad menu Airflow \ Bldg Pressure \.
13.Set the fan tracking parameters as required in keypad
menus Setup/Service \ Fan Tracking Setup \ and Setup/
Service \ Fan Balance \.
14.Set the economizer control parameters as required in key-
pad menu Temperature \ OA Damper \.
15.Set the control timers as required in keypad menu
Setup/Service \ Timer Settings \.
16.Set the date and time in keypad menu
Setup/Service \ Time/Date \.
17.Set the operating schedule as required using keypad
menus.
Note: When used with a Building Automation System,
these settings may need to be kept at the default of no
schedule.:
a. Schedules \ Daily Schedule \
b. Schedules \ Holiday Schedule \
18.Place the unit into the Calibrate mode by using the keypad
menu Setup/Service \ Unit Configuration \ Calibrate
Mode= and changing the value from "No" to "Yes". Cali-
brate will automatically zero all static pressure sensors
and calibrate any actuator feedback pots connected to the
MicroTech II controller. When calibrate is finished, key-
pad menu System Summary \ System \ UnitStatus= will
change from "Calib" to "Off Man". To restart the unit
change keypad menu System Summary \ System \ Ctrl
Mode = from "Off" to "Auto".
Maintaining Control Parameter Records
It is recommended that the MicroTech II controller's set
points and parameters be recorded and saved for future refer-
ence. If the Microprocessor Control Board ever requires
replacement, this record will facilitate entering the unit's
proper data. The following tables display all the set points,
monitoring points, and program variables offered by Micro-
Tech II plus the keypad road map used to find each parame-
ter. All user adjusted set points and program variables are
highlighted along with their default values.
Light gray boxes in Figure 79 on page 81, Figure 80 on
page 82 & Figure 81 on page 83) indicate parameters specif-
ically associated with discharge air temperature control.
Medium gray boxes in Figure 79 on page 81, Figure 80 on
page 82 & Figure 81 on page 83) indicate parameters specif-
ically associated with space temperature control.
Dark gray boxes in Figure 79 on page 81, Figure 80 on
page 82 & Figure 81 on page 83) indicate parameters com-
mon to both control methods.
Keep a record of any changes made to the shaded boxes.