Greenheck Microprocessor Controller (474706 IOM) TAP v1.04 June 2011 (ERCH, ERH, APEX, VER, ERT) - Manual (Page 8)

8 DDC Controller for Tempered Air Products
The DDC controller will revert to a default main menu loop. This loop includes several screens to view the
operating conditions of the unit. Scroll through the menu screens by using the Prg Esc Prg Esc
keys. Screens with a
dashed line border are dependent upon an optional accessory and may not always appear.
T he iniTial menu screen displays The program version , uniT code and s TaTus
l ine . T he s TaTus l ine displays which mode The uniT is in .
Possible modes include:
• Initial Delay • Sys On-Dehumidifying
• Opening Dampers • Sys On-Dehumid & Reheat
• Exhaust Fan Starting • Unoccupied-Unit Off
• Supply Fan Starting • Unoccupied-Heating
• System On • Unoccupied-Cooling
• Defrost Mode Active • Manual Override
• Sys On-Economizer • Remote Off
• Sys On-Heating • Press Alarm Button!!!
• Sys On-Cooling
T
he TemperaTures on This screen display real Time condiTions from The
sensors locaTed in The uniT and The room
(
if insTalled
).
e
nergy
r
ecovery
w
heel
s
TaTus
. (
if equipped
)
If equipped with an energy wheel, this screen will display the wheel speed. If
the unit contains a wheel VFD, this screen will display the wheel speed being
sent via the controller’s wheel analog output.
If the unit does not contain an energy wheel VFD, 0% = OFF; 100% = ON.
If equipped with a frost control method, this screen will also display wheel
pressure differential status. A pressure status of high is an indication of frost
accumulation.
c
ooling sTaTus is displayed
,
along wiTh compressor operaTion
. (
if equipped
)
This screen appears if a cooling option is provided.
Chilled Water: The Cooling Control % is directly proportional to the 0-10 VDC
output signal.
0% Cooling = 0 VDC
100% Cooling = 10 VDC
The cooling control output can be configured to DIRECT / REVERSE acting,
along with the minimum and maximum output voltages by entering the
MANUFACTURER menu.
Packaged DX Cooling: The Cooling Control displays internal cooling ramp as
a percent. Compressor operation is displayed when engaged.
• D = Digital Scroll Compressor Operation
• 1 = First Staged Compressor Operation
• 2 = Second Staged Compressor Operation
Heat Pump Cooling: The Cooling Control displays internal cooling ramp as a
percent. Compressor operation is displayed when engaged.
• 1 = First Staged Compressor Operation
• 2 = Second Staged Compressor Operation
Main Menu Overview
TIME DATE UNIT##
TAP v1.04 GMYXX000X00
STATUS LINE
TIME DATE UNIT##
Supply Air: 000.0°F
Outside Air: 000.0°F
Cold Coil: 000.0°F
Room: 000.0°F
STATUS LINE
Energy Recovery
Wheel: 000% Speed
Wheel Differential
Pressure Is: Normal
STATUS LINE
Cooling Status
Cooling Control: 000%
Compressor D 1 2
STATUS LINE
®
®