Maritime Geothermal WH-Series, Installation And Service Manual

Page: 35 / 77

1-Oct-2015 Page 35 002028MAN-01
INDOOR CIRCULATOR OPERATION
The Indoor Circulator will operate anytime the compressor
is on. When Setpoints Method is set to Indoor Loop (default),
the circulator will also cycle on and off when the compressor is
not operating in order to sample the water temperature of the
tank. When the compressor stops, the circulator will continue to
run for 30 seconds. It will then cycle with an OFF time of 6
minutes and an ON time of 2 minutes. The timer counts downs
the time remaining before the next switch between ON/OFF.
The Indoor Circulator indicator will indicate when the circulator is
running.
OUTDOOR RESET
When Control Source HYD is set to Setpoints , an option-
al Outdoor Reset control algorithm is available for heating mode.
This refers to built-in functionality which reduces the heating
temperature setpoints at warmer outdoor temperatures, as
measured by the outdoor unit. To enable it simply click on the
Outdoor Reset button at the bottom of the screen, the button will
change to say Enabled, the indicator will come on and the Out-
door Reset table will appear.
The Heating Setpoints Adjustments will move to the top
row of the Outdoor Reset Table. The Delta Adjustments will
remain where they were. The current Setpoint Value based on
the outdoor temperature is displayed where the Setpoint Adjust-
Heating Setpoints Adjustments.
Heating Delta Adjustment.
Current Setpoint Value
based on outdoor temper-
ature.
Row in use will be RED .
ments where originally. The Outdoor Reset Table row in use
based on outdoor temperature will turn red.
The Outdoor Reset Table is created by subtracting the
value of the Outdoor Reset Factor from the original setpoints
once for each table row . The original setpoints are located in
table row 0 (<10F). The next row down equals the row above
minus the Outdoor Reset Factor.
The original setpoints are the hottest temperature desired,
the calculated row setpoints will decrease as the outdoor tem-
perature rises, and increase back towards the original setpoints
as the outdoor temperature drops. This improves system effi-
ciency by maintaining a lower tank temperature when hotter
tank temperatures are not needed due to the warmer weather.
RED—Heating
BLUE—Cooling
Reset factor adjusts the temperature
difference between table rows.