Field Controls HHSC+, User Manual, Page: 8 / 20

page 8
NAVIGATING THE MENU
Please refer to the color-coded Menu Map for guidance through the HHSC+ menu structure. Each
colored box on the Map represents a particular menu item window that will appear on the HHSC+ display.
The button colors, shapes, and action arrows in a Map item box correspond to the actions and settings
available in the corresponding display menu item window. For instance, if the available selections in a Map
item box are colored green, then the HHSC+ selection(s) are adjusted or selected by pressing the button(s)
that are colored green in the corresponding Map item box. If an action arrow leads from a box to another
box, the button with the corresponding color will cause the action indicated by the arrow.
Pressing “MENU” (square menu button symbol) either scrolls to the next main menu item without entering
any settings windows beside a main menu item, or typically exits the settings boxes back to the main menu.
Pressing the up or down arrow buttons (up/down arrow symbols) typically adjust the setting(s) available in
that particular menu item window.
Pressing “SELECT” (round select button symbol) typically advances to the next settings window beside a
main menu item, or exits from the last settings window back to the main menu.
A main menu item may have settings that are directly adjustable in the main item window, and/or additional
settings windows that are available under that main menu item, as accessed by pressing the “SELECT”
button.
SETUP
UV LAMP AND FILTER TIMERS (RED MAP BOXES):
The UV lamp timer will cause the HHSC+ status LED to turn red, and display a message reminding the
user to replace UVC germicidal lamp(s) if desired, when the selected replacement period has passed since
the timer was reset. Available selections are 1 year, 2 years, and None (if no UVC lamp systems have been
installed or if no reminder is desired).
The Filter change timer will cause the HHSC+ status LED to turn red, and display a message reminding the
user to replace the HVAC system filter(s) if desired, when the selected replacement period has passed since
the timer was reset. Available selections are 3 months, 6 months, 12 months, and None (if no reminder is
desired).
VENTILATION SETTINGS (RED MAP BOXES):
The Cycle Period determines how often the HHSC+ will activate the HVAC fan for ventilation and
recirculation, if no fan activity is called for by the thermostat before a cycle period has ended. A new
cycle will begin every 30, 45, or 60 minutes as selected, or whenever the HVAC fan is de-activated by the
system thermostat. If the system fan is manually set to On at the thermostat, the HHSC+ will automatically
open the vent damper once every cycle period for the amount of time selected as (Ventilation % ÷100) X
Cycle Period. Note: the Cycle Period does not affect the average ventilation rate and may be set to the
occupant’s preference, without changing the average ventilation rate. The average ventilation rate as may
be required to meet ventilation codes is controlled and affected only by the Ventilate % setting.
Ventilate % and Circulate % settings control how long the FAD fresh air vent damper will be open per cycle
period, and how long the HVAC circulation fan will be caused to run by the HHSC+ per cycle period. For
instance, if Ventilate % is set to 33% (factory default), the FAD damper will open for 33% of the cycle period
(example: cycle period is 60 minutes – the FAD will be open for 20 minutes out of 60 minutes, or 0.33 x 60
= 20).
INSTALLER SETTINGS
The Installer Settings main menu items (orange Map boxes) appear by default upon the first power-up of the
HHSC+, and at other times by pressing and holding both “MENU” and “SELECT” buttons at the same time for
several seconds. The menu items are: