H. manufacturer – Greenheck Microprocessor Controller (474706 IOM) TAP v1.04 June 2011 (ERCH, ERH, APEX, VER, ERT) User Manual
Page 25
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DDC Controller for Tempered Air Products
T
his
screen
allows
adjusTmenT
of
The
Time
delay
before
The
exhausT
fan
when
The
supply
fan
sTarTs
.
This screen only appears if an energy wheel was provided with the unit.
The delay between the starting of supply and exhaust fans reduces the startup
amp draw of the unit. The exhaust fan engages first, allowing the energy
wheel to see space temperature conditions prior to the supply fan engaging.
This allows the wheel to provide maximum preconditioning of the outdoor air.
This also minimizes the potential of extreme outdoor air temperatures being
supplied to the space, prior to the cooling or heating engaging.
T
his
screen
allows
adjusTmenT
of
The
Time
delay
for
wheel
roTaTion
alarm
.
This screen only appears if an energy wheel was provided with the unit.
Similar to the Fan/Airflow Proving Switch alarm, the energy wheel rotation
alarm delay allows time to elapse prior to the controller showing an alarm. The
delay prevents a false alarm from occurring if the sensor does not sense the
wheel rotation for the allotted time.
T
his
screen
allows
The
user
To
save
and
resTore
The
facTory
defaulT
parameTers
sTored
in
memory
.
The Factory Settings include the Factory default parameters and the unit setup
code. If the user would like to restore to these parameters, move the cursor to
the Restore position and change to YES.
T
his
screen
allows
The
user
To
resTore
back
To
The
original
f
acTory
defaulT
parameTers
.
Restoring to the original default parameters will result in a non-customized
controller. The user should not restore to these settings unless instructed by
the factory.
T
his
screen
allows
The
user
To
change
The
m
anufacTurer
p
assword
(pw2)
T
his
screen
allows
The
user
To
adjusT
whaT
TemperaTure
uniTs
The
conTroller
should
display
and
wheTher
The
display
buzzer
should
be
enabled
or
disabled
.
The temperature unit of measurement can either be Fahrenheit or Celsius.
If using Celsius, the user will need to manually convert the factory default
parameters in the Factory Settings menu.
The display buzzer is only applicable when a remote interface panel is
attached to the controller. If an alarm were to occur, the remote display panel
would begin buzzing loudly (if the buzzer was enabled) and would show the
alarm status.
Fan Delay
Time delay between starting
of supply & exhaust fans.
Fan delay:
15s
Wheel Rotation Sensor
Alarm delay:
30s
(input ID3)
Temperature Scale
Select: Fahrenheit
Display Buzzer
Select: Disable
The Initialization Menu allows the user to save and restore the controllers default
parameters. The controller can be restored with either the Manufacturer’s default
parameters from shipment, or an unconfigured factory default.
Factory Settings
Save?
No
Restore?
No
New Password
Insert new manufacturer
password (PW2):
0000
Initialization
DEFAULT INSTALLATION
Erase user settings and install
global default values:
No
H.
Manufacturer
d. Initialization
®