Specifications
24
Table 29 — Service Test
Independent Outputs — The Independent sub-menu
items can be turned on and off regardless of the other category
states. For example, the alarm relay can be forced on in the
INDEPENDENT sub-menu and will remain on if compressor
relay are requested in the COOL sub-menu.
Fans — Upon entering the Fans sub-menu, the user will be
able to turn the supply fan on and off, set the supply fan VFD
speed, and turn the condenser fans on and off.
Cooling — The cooling sub-menu offers different cooling
service tests.
The user has manual relay control of individual compres-
sors. If the user energizes mechanical cooling, the supply fan
and the outdoor fans will be started automatically. During
mechanical cooling, the unit will protect itself. Compressor
diagnostics are active, monitoring for high discharge pressure,
low suction pressure, etc. The user can also turn the hot gas
bypass valve on and off.
NOTE: It is crucial that proper compressor rotation be verified
during the service test. Each compressor must be tested
individually. After starting each compressor, the control will
check the suction pressure after 5 seconds of run time. If the
control does not see a sufficient decrease in suction pressure
after 5 seconds, mechanical cooling will be shut down, and an
alarm will be generated (A140). This alarm requires a manual
reset. If this alarm occurs, do not attempt a restart of the
compressor and do not attempt to start any other compressors
until the wiring to the unit has been corrected.
Heating — If unit has a thermostat connected (C.TYP =3
or 4), install the RED jumper wires between TB4, terminals R
(1), W2 (3) and W1 (4). Terminal block TB4 is located in the
unit control box. Remember to disconnect these jumpers when
Test Mode is completed. The Heat Test Mode sub-menu will
offer automatic fan start-up if not a gas fired heat unit. On gas
heat units, the IGC feedback from the gas control units will
bring the fan on as required.
Within this sub-menu, the user has control of heat relays 1
to 6.
NOTE: When service test has been completed, if unit has a
thermostat connected (C.TYP = 3 or 4), remove the RED
jumper wires at TB4, terminals R (1), W2 (3) and W1 (4).
Terminal block TB4 is located in the unit control box. Store
these jumpers in the unit control box for future use.
THIRD PARTY CONTROL
Thermostat —
The method of control would be through
the thermostat inputs:
Y1 = first stage cooling
Y1 and Y2 = first and second stage cooling
W1 = first stage heating
W1 and W2 = first and second stage heating
G = supply fan
Alarm Output — The alarm output TB4-7 and 8, will pro-
vide relay closure whenever the unit is under an alert or alarm
condition.
Remote Switch — The remote switch may be configured
for three different functions. Under Configuration
→
UNIT, set
RM.CF to one of the following:
0=noremoteswitch
1 = occupied/unoccupied switch
2 = start/stop switch
3 = occupancy override switch
Under Configuration
→
SW.LG, RMI.L, the remote occupan-
cy switch can be set to either a normally open or normally closed
switch input. Normal is defined as either unoccupied, start or “not
currently overridden,” respective to the RM.CF configuration.
With RM.CF set to 1, no time schedules are followed and
the unit follows the remote switch only in determining the state
of occupancy.
With RM.CF set to 2, the remote switch can be used to shut
down and disable the unit, while still honoring timeguards on
compressors. Time schedules, internal or external, may be run
simultaneously with this configuration.
With RM.CF set to 3, the remote input may override an
unoccupied state and force the control to go into occupied
mode. As with the start/stop configuration, an internal or exter-
nal time schedule may continue to control occupancy when the
switch is not in effect.
ITEM EXPANSION RANGE UNITS POINT WRITE STATUS
TEST
Service Test Mode ON/OFF MAN_CTRL
STOP
Local Machine Disable YES/NO UNITSTOP config
S.STP
Soft Stop Request YES/NO SOFTSTOP forcible
FAN.F
Supply Fan Request YES/NO SFANFORC forcible
F.4.CH
4 in. Filter Change Mode YES/NO FILT4CHG
INDP
TEST INDEPENDENT OUTPUTS
ECN.C
Economizer Act.Cmd.Pos. ECONCTST
E.PWR
Economizer Power Test ECONPTST
E.CAL
Calibrate the Economizer? ECON_CAL
PE.A
Power Exhaust Relay A PE_A_TST
PE.B
Power Exhaust Relay B PE_B_TST
PE.C
Power Exhaust Relay C PE_C_TST
H.I.R
Heat Interlock Relay ON/OFF HIR_TST
ALRM
Remote Alarm Relay ON/OFF ALRM_TST
FANS
TEST FANS
S.FAN
Supply Fan Relay ON/OFF SFAN_TST
S.VFD
Supply Fan VFD Speed 0-100 % SGVFDTST
CD.F.A
Condenser Fan Circuit A ON/OFF CNDA_TST
CD.F.B
Condenser Fan Circuit B ON/OFF CNDB_TST
COOL
TEST COOLING
A1
Compressor A1 Relay ON/OFF CMPA1TST
A2
Compressor A2 Relay ON/OFF CMPA2TST
MLV
Min. Load Valve (HGBP) ON/OFF MLV_TST
B1
Compressor B1 Relay ON/OFF CMPB1TST
B2
Compressor B2 Relay ON/OFF CMPB2TST
HEAT
TEST HEATING
HT.1
Heat Relay 1 ON/OFF HS1_TST
HT.2
Heat Relay 2 ON/OFF HS2_TST
HT.3
Relay 3 W1 Gas Valve 2 ON/OFF HS3_TST
HT.4
Relay 4 W2 Gas Valve 2 ON/OFF HS4_TST
HT.5
Relay 5 W1 Gas Valve 3 ON/OFF HS5_TST
HT.6
Relay 6 W2 Gas Valve 3 ON/OFF HS6_TST