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Accessories (each sold separately)
Temperature Sensor
Model TS3/OAT is a sealed, outdoor solid-state temperature sensor designed to interface
directly with the EL712.
Specifications: Operating temperature: -40 F to 167 F (-40 C to 75 C), Resolution: 1.5F (1C)
Model TS3/SAT is an unsealed, indoor solid-state temperature sensor designed to interface
directly with the EL712.
Specifications: Operating temperature: -40 F to 140 F (-40 C to 60 C), Resolution: 1.5F (1C)
Light Sensor
Model LS-R is a solid-state light sensor designed to interface directly with the EL712. It pro-
vides a relative light level to the control (0-100 L).
Computer Software
The Pecosoft.EL software program provides a quick and easy method of programming and
reviewing the EL712 from a personal computer. Programs can be written and stored on the PC
and then loaded into the time control. Programs can also be copied from the time control into
the PC to allow easy review and verification.
Contact Maple Chase Company for further information.
Application Examples
Example No. 1:
Objective: To control an air conditioner to operate at 73 F from 8:00 AM to 12:00 PM and to
operate at 77 F from 12:00 PM to 5:00 PM on Monday through Friday. On nights and week-
ends the air conditioner will be off. The air conditioner will also be off from October 1st to April
30th. Temperature setpoints are to have a +/- 1 F deadband.
Wiring Diagram:
14
Programming:
STEP
KEY
DESCRIPTION
1.
RESET
Clears control's memory. Control is finished initializing when # stops
flashing (about 6 seconds).
2.
NEXT
Display shows MAINtAin (maintained relay operation).
3.
PROGRAM
Display shows TIME header.
4.
NEXT,+,-
Use these keys to set time, date and daylight savings time informa-
tion.
5.
PROGRAM
Press PROGRAM key to step through headers until EVNT (event
header) is reached.
6.
NEXT
First event is shown with event # flashing.
7.
NEXT
Event type is flashing.
8.
+
Select OFF event type.
9.
NEXT
Channel no.1 is flashing. This is the desired channel.
10.
NEXT
Hours are flashing.
11.
-
Roll backward to select 5 PM.
12.
NEXT
Minutes are flashing. 00 is desired value.
13.
NEXT
SUN is flashing. NO is displayed.
14.
NEXT
MON is flashing. NO is displayed.
15.
+
Change NO to YES. Step through remaining days and select YES
for TUE, WED, THU, FRI and HOLIDAY A.
16.
PROGRAM
Advance to INPT (configure inputs) header.
17.
NEXT
1st input is shown with input # flashing.
18.
NEXT
Input type is flashing.
19.
+/-
Select F (Fahrenheit).
20.
NEXT
CAL (calibration) offset is shown.
21.
+/-
Calibrate sensor if necessary.
22.
PROGRAM
Advance to EVNT SENS (sensor event) header.
23.
NEXT
First sensor event is shown with event # flashing.
24.
NEXT
Sensor no. is flashing. NONE indicates that a sensor has not yet
been selected.
25.
+
Select sensor 1. 1- F is displayed.
26.
NEXT
Channel no. 1 is flashing. This is the desired channel.
27.
NEXT
Hours are flashing.
28.
+
Roll hours to 8 AM (PM indicator is not displayed).
29.
NEXT
Minutes are flashing. 00 is desired value.
30.
NEXT
SUN is flashing, NO is displayed. Step through the days to select
YES for MON, TUE, WED, THU and FRI.
31.
NEXT
ON is displayed with the on setpoint flashing.
32.
+
Roll to 074F.
33.
NEXT
OFF is displayed with off setpoint flashing. Default value of 072F is
what we want. If another value is desired, use the +/- keys to roll to
that value.
NOTE: Because the resolution is 1.5 F, not all values of F will be
possible.
34.
NEXT
Sensor event # 02 is shown. Repeat the above steps to select
Sensor 1, Channel 1, 12:00 PM, MON thru FRI, an ON setpoint of
077F and an OFF setpoint of 075F.
35.
PROGRAM
Advance to HOL (holiday) header.
36.
NEXT
Displays SPEC (special holiday ) header.
37.
-
Select SPAN (holiday duration) header.
38.
NEXT
First holiday duration is shown with holiday # flashing.
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