Specifications

ManualsBrandsCarrier ManualsFan50JB034

Schedules Group — This group includes Schedule I

and II, Timed Discrete Output, Timed Override, Adaptive

Optimal Start, and Adaptive Optimal Stop (available on CV

units only).

TIME SCHEDULES — Time Schedule function provides

two separate schedules from the unit controls. Schedule I is

provided for unit operation as a means to automatically switch

back and forth from Unoccupied to Occupied modes. Sched-

ule II provides a means to automatically change the Discrete

Device Output (for control of outdoor building or parking

lot lights).

Each schedule consists of 1 to 8 occupied time periods

that are set by the user through the function on the HSIO.

NOTE: A control relay for external device control (see Timed

Discrete Output) is required for Schedule II.

Sequence of Operation

Schedule I — When the schedule changes from Unoccupied

to Occupied modes (or vice versa), the Master Loops will

change their priorities and control the submaster reference

values according to user conﬁguration instructions for unit

Unoccupied or Occupied mode.

Schedule II — See the Timed Discrete Output section below.

Conﬁguration — To conﬁgure Time Schedule set points, en-

ter the Set Point function and the Date and Time subfunc-

tion by pressing and . To set the Day of the Week

and Time, scroll down to DOW. The current day, hour, and

minute will be displayed (where 1= Monday, 2 = Tuesday,

and so on). To change the day and time, press the numbers

of the new set point (example:

ENTER

would be Monday, 2:30 PM) and then press .

To set the Month, Day, and Year, scroll down to

MDY. The current month, day, and year will be displayed

(mm.dd.yy). To change the month, day, and year, press the

numbers of the new set point (example:

ENTER

which would be May 14, 1998) and then press .

To Set Daylight Savings Time and Set Occupancy Sched-

ules, Schedule I, see the Program Time Sequences on

page 50. See Table 16.

TIMED DISCRETE OUTPUT — The unit control can be

programmed with a unique time schedule (separate and dif-

ferent from the unit Occupied/Unoccupied schedule) that may

be used to control an external function or device (such as

parking lot lights) without adding a discrete timeclock de-

vice. This schedule is designated as ‘‘Schedule II.’’

A special relay (P/N HK35AB001) with a 20 vdc coil is

required.

Sequence of Operation — From Schedule II, when time sched-

ule indicates Unoccupied time, the control output is off. When

time schedule indicates Occupied time, control output is on

(relay energized).

Conﬁguration — To conﬁgure:

1. Connect control wires from external controlled device at

PSIO2 Channel 44 (terminals J6/41 and J6/42).

2. Enter Time Schedules. Press . (See Schedule

Function section on page 50 for detailed instructions.)

Deﬁne Period 1 (Occupied, Unoccupied). Deﬁne Periods

2 thru 8 (as required).

TIMED OVERRIDE — The Timed Override mode allows

an occupant to return a system that is in Unoccupied status

to Occupied status, for period of 1 to 4 hours (user-configured).

Timed Override is Mode 38. The Timed Override function

can be user-conﬁgured to return only the unit, the Timed Dis-

crete Output, or both to Occupied status. A T-55 space sen-

sor (factory-supplied, ﬁeld-installed) or T-56 space sensor

(ﬁeld-supplied and -installed) is required.

To activate Timed Override, press the button on face of

the space sensor. The unit control will recognize this signal

and enable the Occupancy Schedule program to extend the

Occupied period by the conﬁgured timed override amount.

To conﬁgure Timed Override, perform the following

procedure:

Select which Time Schedules permit the use of override.

Press to enter into the Service function. Enter the

password. Press to enter into the User Conﬁguration

subfunction. Scroll down to TSCH. The current schedule con-

ﬁguration will be displayed. A 1 represents Unit schedule

only (Time Schedule I). A 2 represents Timed Discrete Out-

put only (Time Schedule II). A 3 represents both Schedules

I and II. Press the number of the desired conﬁguration and

ENTER

press .

Conﬁgure the duration for Timed Override (Schedule I).

Press to enter in to the Service function and the Over-

ride subfunction. Scroll down to TOVR. The number of over-

ride hours will be displayed. The default is 1 hour. The range

is 1 to 4 hours. To change the conﬁguration, press a new

ENTER

number (example: ) and .

One-time Period Override — As an alternate way to initiate

override, a service technician may initiate Timed Override

from the HSIO, for a one-time period.

To initiate an override for Schedule I, press to en-

ter into the Schedule function. Scroll down to OVRD. The

current override time will read 0. Press the number of the

ENTER

desired override time and press . The acceptable range

of values is 0 to 4 hours. At end of this time override event,

the entered OVRD values will be reset to zero.

To initiate an override for Schedule II, press

to enter into the Schedule function. Scroll down to OVRD.

The current override time will read 0. Press the number of

ENTER

the desired override time and press . The acceptable range

of values is 0 to 4 hours. At end of this time override event,

the entered OVRD values will be reset to zero.

Table 16 — Conﬁguring Day of Week/Time of Day

DESCRIPTION HOW TO CONFIGURE AT HSIO SET POINT RANGE

Set Day of Week

DOW Monday = 1; Tuesday = 2; etc.

Set Time of Day

TIME

hh.mm (military time)

(use for ‘‘:’’)

Set Daylight Savings Time (see Table 46)

Set Occupancy Schedules (see Table 47)