Orion System HB Controller - Manual (Page 3)

Overview
3 HB Controller Technical Guide
General
The HB Controller is designed to work with a normal 24 VAC Thermostat
and Dehumidistat. Single or Multi-stage Thermostats can be used. When
a Single-Stage Thermostat is used, an auto-staging feature is built-in for
Multi-stage HB units. Fan speed can be adjusted for both high and low
speeds by way of an interface when the HB unit is equipped with an
adjustable speed controller. Dehumidifi cation is optimized by use of a
Return Air Bypass damper. Modulating Hot-Gas Reheat can be used to
reheat the Supply Air during Dehumidifi cation.
A CO
2
sensor can be connected through the wiring harness when IAQ
control is desired. Also, two damper positions are available when using
Two-Speed Supply Fans, thus providing enhanced IAQ control.
The HB Controller also monitors equipment safeties, logs information,
and locks out the equipment in the event of multiple failures. All sen-
sors are needed in order to provide all modes of operation. However, to
prevent a potential freeze condition, Heating Mode will still operate if
all sensors have failed or are missing.
Terminal block style connections are provided for fi eld wiring of the
Thermostat, Dehumidistat, and Supply Air Temperature Sensor wires.
All other inputs and outputs are connected via a wiring harness on the
HB unit. A list of all available inputs and outputs follows.
Inputs
G, Y1, Y2, W1, W2, W3
RH: Dehumidistat
SAT: Supply Air Temperature Sensor
Controller Overview
MHGRV Reset: Modulating Hot-Gas Reheat Signal (0-10VDC)
RAB: Return Air Bypass Damper Actuator (by others)
ECS: (Enthalpy Changeover Switch)
Econo Pos: Economizer Control (by others)
Carbon Dioxide Sensor
Outdoor Air Temperature Sensor
Liquid Line Temperature Sensor (currently not used)
Heat Safety Monitor (monitors main and auxiliary limit thermostats)
High-Pressure Switch
Low-Pressure Switch
Clogged Filter Switch
Outputs
Supply Fan High-Speed Relay
Supply Fan Low-Speed Relay
Cool-1 Relay
Cool-2 Relay
Heat-1 Relay
Heat-2 Relay
Heat-3 Relay
Condenser Fan Relay
AUX: Currently used for an exhaust fan relay
Modulating Hot-Gas Reheat Signal (from HGR controller)
Adjustable Two-Speed Fan Signal (0-10VDC)
Return Air Bypass Damper Actuator (0-10VDC)
Economizer Damper Actuator (2-10VDC)
Modulating Hot-Gas Reheat Reset Signal (0-10 VDC)
A1, A2: Economizer 24 VAC Power Supply Jumper Terminals
C1, C2: Clogged Filter Switch 24 VAC Output Terminals
Figure 1: HB Controller Dimensions
C26
R55
R56
D22 7
MOD
HGR
HB
VB
NIT
BOARD
MADE
IN
THE
SA
36
MC34064A
VR2
GND
24VAC
V10
P10
C33
POWER
TB3
R67
R6
D23
R68
R66
C30
C2
C27
L1
P5P5
C28
R62 R64 D15
R5
D14
SECTION COOLING
AX
VR1 SERIAL
#
K5
0
I
V5 P4
C32
C31
V6
V
V7
REV
4
YS101
2
4
R65 D16 R63
R60
R57
D17
D4
5
6
D18
2
R4
V8
P2
V4
D2
3
D3
1
P7
C40
AXC
P
TTL
D1 R72 R74 R73 R75
C6 C10 C18 C22
C2
R28
LD3
C25
TB1
C1
LD2 LD1
R40
C15
R34
R43
D12
R52
R54 R47 R45 D10 R37 R38 D8
R35
C14
C12
R27
TB2
C7
HSS
JO2
JO1
INT
R14
R26
R24R24
R20 D6 R17
C4
C3
R R6 D5 R3 R2
R1
ECONO
SECTION
P3
ECONO
POS
EXT
RAB
P1
C1
D1
P8
K2
K4
C34
D13 R53 R51 D1
1
R4 R44 R42
C16
R41
D
R30
R36 R32
C41 C45
C21
R50 R46 R48 R70
C44 C23
10
3
C35
R31 R33 R2
C43
4
R12
R16
R25 D7 R23
C
R22
R18 R15
R21 R1
D20
8
R7 R10 R5
D21
2
C8
C1
1
C13
C36 D1
7 7
R3
R58 C46 R61
C42 X1 C24
C17 5
C3
C20
8 6
C38
RN1
1 C5
C37
P6
R71 R1
1
R13 R8
HSS
SOCKET PROGRAM HEA
T
SECTION
SW1
V1
P
V2
V3
P1
1
P B S
GND C2 C1 A2 A1 W3 W2 W1 Y2 Y1 G RH GND R SA
T
ECONO GND RAB POS MHGR
V
RESET
8.00"
7.60"
6.50
6.10"