CBV-2U4-3T(-N) |
CBV-2U4-3T(-N) Control Sequences
©ABB 2022 All Rights Reserved.
Subject to change without notice
WWW.CYLON.COM
35
M
AN0
13
9
re
v
14
VAV ONE TO TWO STAGE ELECTRIC REHEAT SINGLE SPEED FAN
TEMPERATURE CONTROL
When the zone temperature is greater than, or equal to, the cooling temperature setpoint, the controller will
enter the cooling mode. The primary air flow rate will be varied between its
deadband setpoint, and its maximum Flowrate setpoint
(A211) as required to maintain
the zone at the cooling temperature setpoint.
When the zone temperature falls to the heating setpoint, the controller will enter the heating mode and the
primary air flow rate will be varied between its
(A212), or maximum heating Flowrate setpoint. The stages of electric heat are then staged and optionally
duty-cycled (PWM) as required to maintain the zone at the heating temperature setpoint.
FAN CONTROL
Parallel Single Speed Fan Option
During the occupied mode, the intermittent single speed fan will typically be energized in the heating mode.
The typical fan control matrix is as follows, although other options are possible:
MODE
COOLING
DEADBAND
HEATING
Occupied
Off
Off
On
Unoccupied
Off
Off
On
Warm-up
Off
Off
Off
Standby
Off
Off
On
Series Single Speed Fan Option
The fan will operate continuously whenever the unit is in the occupied state, or in another state and in the
cooling or heating mode. The fan control matrix is as follows:
MODE
COOLING
DEADBAND
HEATING
Occupied
On
On
On
Unoccupied
On
Off
On
Warm-up
N/A
Off
On
Standby
On
Off
On
INPUT / OUTPUT POINTS
VAV Electric Reheat with 1 speed fan
IO POINTS
DESCRIPTION
UI-01
Zone Temperature (with optional override button)
UI-02
Setpoint Adjustment (optional 5K slider)
UI-03
Discharge Temperature (optional)
UI-04
CO
2
, Humidity, or occupancy signal (all optional)
UI-08
Flowrate Sensor
DO-09
Damper Control (CBV-2U4-3T-N only)
DO-10
Damper Control (CBV-2U4-3T-N only)
DO-11
Electric Heat1
DO-12
Electric Heat2 (optional)
DO-13
Parallel or Series Fan
AO-14
AO-15
AO-16
Damper Control
(
CBV-2U4-3T
only)
Содержание CBV-2U4-3T
Страница 1: ... USER GUIDE MAN0139 rev 14 CBV 2U4 3T N ...
Страница 75: ......