Installation Manual 5.1.2
40
Settings include:
Test Mode (on/off): When turned on the test mode is
initiated. The system will run in test mode for 1 hour or
until this setting is turned off. It’s always best to turn
off test mode instead of allowing it to time out.
*Note: when the test mode is initiated the ground loop
pump will be turned on continuously.
Test Mode RV status: The Hydro-Temp reversing valve
is always de-energized for heat and energized for
cooling. Setting this will set the system mode (Heat /
Cool) when the compressor is running.
Test Mode Minimum HZ & Maximum HZ: These two
set points allow the compressor to modulate between a
minimum and maximum speed range.
The minimum HZ the compressor will run is 40 HZ. The
maximum is 160HZ. (Refer to chart in section 11.1.4) If
the minimum HZ is set to 40 and the maximum HZ is set
to 160 the system will start at 40 HZ and slowly ramp up
to 160 HZ. After dwelling at 160 for a few seconds the
system will slowly begin to ramp back down to 40 HZ.
The time to ramp up from 40 HZ to 160 HZ or down
from 160 HZ to 40 HZ is 12 minutes.
*Note: The blower output will ramp as needed to
match the compressor speed. Anytime the compressor
is running in test mode all 4 damper outputs will be
opened.
If a fixed compressor speed is required set both
minimum and maximum to the desired fixed speed. For
example if the compressor is to run at 160HZ set both
minimum and maximum at 160 and the compressor will
run at that one fixed speed for the duration of the test
mode.
If both Minimum and Maximum HZ are set to 0 the
compressor will shut off and stay off. If the compressor
is off the blower will shut off also.
Test number of cycles:
This setting sets the number of times the system will
ramp up to maximum then back down to minimum. If
both min & Max are set to the same setting the number
of cycles is ignored.
Zone Damper Open / Closed:
The next 4 settings allows for testing dampers. The
system dampers will disregard this setting if the
compressor is running and open all dampers. If the
compressor is off these four settings can be used to
open or close each zone damper individually for testing
dampers.
Run Blower when testing dampers:
This setting is used in conjunction with the zone
Damper test. Turn this setting on if the blower is
required to run during the damper test. If left off the
blower will remain off during the damper test.
When the blower starts it will look at what zones are
being told to open and three other parameters to
calculate the blower speed to run. The calculation
shown below will be done on all zones with dampers
open and the maximum value will be used to run the
fan. Blower speed = (System Fan maximum speed x
Zone limit x .01). This should be the most each zone will
ever see. In some cases a one minute delay will occur
before the fan starts or changes speeds to allow
dampers to open /close.
*Note: Zone limiting should be set before testing
dampers. Testing each zone individually after the zone
limiting is set is a good way of verifying each zone can
handle the maximum CFM the system will deliver into
that zone.
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