LAARS M4-LHS - Installation Manual - Manual (Page 36)

HT# 059295-00
A
36
M4-LHS installation and Operation Manual
DaY - NigHT SCHEDuLE
(Available when "Shutdown or Tstat" is selected from the Shutdown/Tstat/
Setback Startup menu option only)
Button: MENU///Day/Night Schedule
• The M4-LHS has two levels of heat. The Day (Normal) level is used when a building is
occupied and people are active.
• The Night (Setback) level is used when a building is not occupied, or when people are
sleeping. This setting reduces the calculated temperature by the Setback setting. See
"Setback" on page 31. If the Day calculated water temperature was 150˚F and the Setback
was 20˚F, the Night Schedule will run at (150˚F - 20˚F) = 130˚F.
• If the Boost feature is being used, it uses the Day Schedule as the Boost ending point. See
"Boost Mode" on page 25. That is, if the Day Schedule is set to start at 6:00AM, the Boost
will start 30 minutes prior to the Day setting at 5:30AM. The M4-LHS will then raise
the calculated water temperature by the Setback amount. Using the previous example,
at 5:30AM the M4-LHS will raise the calculated water to 170˚F = (150˚F + 20˚F) until
6:00AM.
DAY/NIGHT SCHEDULE
Set Time **:**
Day Schedule 6:00a
Night Schedule 8:00p
BACK ▲ ▼ SAVE
-- DAY SCHEDULE --
6:00 Am
BACK ▲ ▼ SAVE
Set Time
Button: MENU///Set Time
• Adjust the time by selecting Set Time from the menu and then scrolling through the hours
then select Save. If the hours are to be set to PM, scroll through the AM hours to reach the
PM hours. Then, scroll through the minutes then select Save.
----- SET TIME -----
7:35 Pm
BACK ▲ ▼ SAVE
aLErT
Remember that the battery is the backup for the Time. If no power is supplied to the M4-LHS and
there was no battery or the battery had no power, time values will be lost and will need to be reset.
MaiNTENaNCE
Button: MENU/
The Maintenance menu gives access to sensor and modulating output trimming. In addition,
you'll have access to view the Startup configuration settings.
aLErT
To be able to change the M4-LHS settings the Program/Run Switch must be
set to Program. The switch is located under the Enclosure Wiring Cover for
security. The Enclosure Wiring Cover can be secured using a lock.
----- MAINTENANCE ----
System Trim +0
o
F
Outdoor Trim 0
o
F
BACK ▲ ▼ SAVE
SYSTEM
A
B
C
D
1 2
RUN PROGRAM
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
3 4 5 6 7 8 9 10 11 12 13 15 14 17 16 18 20 19 21 24 23 29 25 27 26 28 32 30 31
L N
- + +
T T O O RS-485 mA GND VLT
SYS A B C D PWR
CUR / VLT
A
- + +
mA GND VLT
- + +
mA GND VLT
+ +
mA
22
-
GND VLT
+
mA
TEMP
OUTDOOR
O O
TEMP
SYSTEM EXTENSION
MODULE CUR / VLT
B
CUR / VLT
C
CUR / VLT
D
PROVE
/DHW
SHUTDOWN
/SETBACK
FOR ALL CIRCUITS
120VAC, 6A RESISTIVE
OUTPUT RATINGS:
1A PILOT DUTY, 15A TOTAL
115VAC 60Hz , 30VA MAX
INPUT RATINGS:
USE COPPER WIRE,
CLASS 1 WIRE ONLY.
CAUTION: RISK OF ELECTRIC SHOCK
More than one disconnect switch may be required
to de-energize the equipment before servicing.
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
99RA
/TSTAT
M4-LHS
HYBRID CONTROL
System & Outdoor Sensor Trim
Adjustable from -5F°/-3C° to +5F°/+3C° Default: 0°F
Button: MENU//System Trim
Button: MENU//Outdoor Trim
• The Laars thermistor type sensors are very accurate, and normally require no calibration.
Sometimes it may be desirable to make small adjustments to the displayed value for either
the Outdoor Temperature (OD) or the System Temperature (SYS). The Trim setting is used
to adjust the displayed value.
• Do not use the Trim setting to make the Outdoor Temperature sensor match that reported
on the radio or TV. Outdoor Temperature can vary widely over a broadcast range. Only
trim the outdoor sensor based on an accurate thermometer reading taken where the sensor is
located.
SYSTEM SENSOR TRIM
+0 o
F
[ ]
BACK ▲ ▼ SAVE
OUTDOOR SENSOR TRIM
+0 o
F
[ ]
BACK ▲ ▼ SAVE