Variable Air Volume Units Using Return Air
Sensor or Space Temperature Sensor -- To con-
figure the unit, perform the following:
1. The type of control is configured under Cbnfiguration
--_UNIT-+C TYP Set C TYP to 1 (VAV-RAT) for return
air sensor. Set C !TP to 2 (VAV-SPT) for space tempera-
ture sensor.
2.
NOTE: For VAV with a space sensor (VAV-SPT), under
Configuration-+UNIT-+SENS-+SPT.S, enable the
space sensor by setting SPT.S to ENBL.
Install jumpers between R-W2 and W2-Wl on TB4 in
the control box.
3.
The space temperature set points and the supply air set
points are configured under the Setpoints menu. The
heating and cooling set points must be configured. See
the Heating Control and Cooling Control sections for
further description on these configurations. Configure the
following set points:
4.
OHSP
OCNP
UHSP
EC.ON
V.C OF
SASP
Occupied Heat Setpoint
Occupied Cool Setpoint
Unoccupied Heat Setpoint
VAV Occupied Cool On Delta
VAV Occupied Cool OffDelta
Supply Air Setpoint
To program time schedules, make sure SCI-LN=I under
Configuration--cCCN--cSC:OV--cSCH.N to configure
the control to use local schedules.
5. Under the Timeclock-+SCI-I.L submenu, enter the de-
sired schedule. See Time Clock Configuration section on
page 75 for further description of these configurations.
6. Under Configuration-+SP-+SRSP the supply duct Stat-
ic Pressure Setpoint should be configured.
7.
SRSP Static Pressure Setpoint
If supply air temperature reset is desired, under the
Configuration-+EDT.R submenu, the following set
points should be configured:
RS. CF
R TIO
LIMT
RES.S
EDT Reset Configuration
Reset Ratio (ifRS.CF = 1 or 2)
Reset Lhnit (ifRS.CT = 1 or 2)
EDT 4-20 mA Reset Input (ifRS. CT = 3)
NOTE: Configure either RTIO and LIMT or RES.S. All three
are not used.
8. See the Economizer Options section on this page for ad-
ditional economizer option configurations.
9. See the Exhaust Options section onpage 29 for additional
exhaust option configurations.
Multi-Stage Constant Volume Units with
Mechanical Thermostat E Toconfigure the unit, per-
form the following:
1. Under Configuration-+UNIT_C TYp set C:TYP to 3
(TSTAT MULTI).
2. Remove jumpers from R-W2 and W2-W1 on TB4 in the
control box. Connect thermostat to TB4.
3. Under the Setpoints menu, set the following
configurations:
4.
SA.HI Supply Air Set Point Hi
SA.LO Supply Air Set Point Lo
See the Economizer Options section on this page for ad-
ditional economizer option configurations.
5. See the Exhaust Options section on page 29 for additional
exhaust option configurations.
Multi-Stage Constant Volume Units with
Space Sensor E To configure the unit, perform the
following:
1. Under Configuration-+UNIT_C TYp set C:TYP to 5
(SFr MULTI).
2. Install jumpers between R-W2 and W2-Wl on TB4 in
the control box.
3. Under the Setpoints menu, the following configurations
should be set:
4.
OHSP
OCSP
UHSP
UCSP
GAP
SA.HI
SA.LO
Occupied Heat Setpoint
Occupied Cool Setpoint
Unoccupied Heat Setpoint
Unoccupied Cool Setpoint
Heat-Cool Setpoint Gap
Supply Air Set Point Hi
Supply Air Set Point Lo
The degrees of demand from the space temperature set
points are configured under the Cbnfiguration-+D.LV.T
submenu. See the Heating Control and Cooling Control
sections for further description on these configurations.
Configure the following set points:
5.
L.H.ON
H.H.ON
L.H.OF
L.C.ON
H.C.ON
LC.OF
Demand Level Lo Heat On
Demand Level Hi Heat On
Demand Level Lo Heat On
Demand Level Lo Cool On
Demand Level Hi Cool On
Demand Level Lo Cool On
6.
7.
Under Cbnfiguration--+UNIT--+SENS--+SPT.S, enable
the space sensor by setting SPT.S to ENBL.
Under Cbnfiguration-+UNIT_,CV..FN, set CV..FN to 1
for continuous fan or 0 for automatic fan.
To program thne schedules, set SCI-LN=I under Cbnfig-
uration_,CCN-+SCOV-+SCI-I.N to configure the con-
trol to use local schedules.
8. Under the Timeclock-+SCI-I.L submenu, enter the de-
sired schedule. See Thne Clock Configuration section on
page 75 for further description of these configurations.
9. See the Economizer Options section below for additional
economizer option configurations.
10. See the Exhaust Options section on page 29 for additional
exhaust option configurations.
Economizer Options _ Under the Cbnfiguration--+
ECON submenu, the following set points ]nay be configured:
EC.EN
EC.MN
EC.MX
E. TRM
E.SEL
OA.E. C
OA.EN
OAT.L
O.DEW
ORH.S
Economizer Enabled?
Economizer Min.Position
Economizer Maximum Position
Economizer Trim for SumZ?
Econ Changeover Select
OA Enthalpy Change Over Select
Outdoor Enthalpy Compare Value
High OAT Lockout Temp
OA Dew Point Temp Limit
Outside Air RH Sensor
Configuration--_ECON-+EC.MN should always be set for
the minimum damper position.
28
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