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8
Heat-Timer Corp.
AUTOMATIC ROTATION AMONG BOILERS
•
Rotating the lead unit to be activated on a call for output promotes even wear on all units. The SQ-Elite has three modes of rotation:
Manual, First-On-First-Off, or Timed Rotation. This option automatically rotates the units every selected period from one hour to
every 41 days (999 hours).
SETBACK/BOOST OR DAY/NIGHT SCHEDULING
Two Setback modes are available for the SQ-Elite:
•
The Day/Night Scheduling provides an adjustable time-based schedule for the Setback. It will be available when Shutdown or Tstat
is selected from the External Input Startup menu options. See page 18.
•
When Setback is selected from the External Input Startup menu options, an external signal can be used to switch the operation of
the SQ-Elite-8T in and out of setback mode. See page 18.
•
The Boost can be used to bring the building to comfortable temperature settings after a Night or Setback period. It does that by increasing
the target temperature in heating or decreasing it in cooling application for an adjustable period that follows the setback.
INSTALLATION
Each of the SQ-Elite and SQ-Elite-EXT consists of three primary enclosure
components.
•
T he Enclosure Display Module: contains the display, buttons, LEDs,
and electric wiring terminals. It has two screws to hold it to the base. A
program configuration switch, used to adjust SQ-Elite settings, is placed
above the terminals. This switch is enclosed with the Enclosure Wiring
Cover for security. The wiring terminals are of the plug-in type to ease
installation and removal.
•
T he Enclosure Base: contains the holes to mount and hold the control
against the wall or any flat surface. All other enclosure components mount
on the base. The bottom section of the Enclosure Base contains the wiring
chamber with knockouts on the bottom to ease installation.
•
T he Enclosure Wiring Cover: seals the wires from the external
environment. It has two screws to hold it to the base and a hole to secure
a lock on the wiring enclosure. A plastic web that separates the wiring
chamber into high and low volt sections has been provided.
MOUNTING THE ENCLOSURE
•
Select a location near the equipment to be controlled.
•
The surface should be flat and sufficiently wide and strong to hold the SQ-
Elite or SQ-Elite-EXT.
•
Keep the control away from extreme heat, cold, or humidity. Ambient
operating temperature is from 20 to 120°F.
•
Remove the Enclosure Wiring Cover from the control enclosure by
removing the two bottom screws.
•
Remove the Enclosure Display Module by removing the middle screws.
•
Screw the Enclosure Base to the surface through the upper and lower
mounting holes on the back of the enclosure.
•
Replace the Enclosure Display Module and replace the middle screws.
•
Do not replace the enclosure wiring cover until all wiring is done.
•
When purchasing a padlock for the enclosure, the maximum shank diameter
should not exceed ¼"
Enclosure Display Module
Enclosure Wiring Cover
Hole for optional
Padlock (not supplied)
Mounting Base
Display Mounting Screws
Wiring Cover Mounting Screws
Enclosure Base
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