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VPB192H4M
Lennox VPB192H4M User Manual
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36
Figure 29. Electric
Air Handler 1-Speed Wiring
(Lennox
Air Handler 1-Speed Connection Shown)
1 C
oo
li
ng
Sp
ee
d Wir
i
ng
Example
A
HU
LII
C
BX
27
UH, TSA
? T
PA?
T
AA
?
f
an
speed set at t
ap
#4
FAN
FAN
CTON
HTON
AUXH
R
3
W
2
W
1
W
G
2
Y
1
Y
O
S
D
CTON
HTON
AUXH
C
24V
1A (X6)
2 CMP
Y1-Y2
24VAC
~
DEH
OPT
DEH
OPT
Ho
L
Mo
Lo
C
CBX27UH
0~2
50
V
1A (X3)
P3 AH
U Control Ki
t
35
37
Table of Contents
Shipping and Packing List
1
Model Number Identification
2
System Piping
2
Allowed Outdoor Unit Connections
2
Application
3
Electric Air Handler with Electric Auxiliary Heat & AHU Control Kit
3
AHU Control Kit
4
Unit Dimensions - Inches (MM)
5
AHU Control Kit Dimensions
5
Installation Clearances - Inches (MM)
6
AHU Control Kit Clearances
6
Refrigerant Pipe Connections & Electrical Wiring Inlets
7
Before Installation
7
Select Air Handler Unit and AHU Control Kit Model
7
AHU Control Kit Specifications
8
Allowed Indoor Unit & Outdoor Unit Capacity Ratio
9
Placement
10
Position the Control Box Vertically When the EXV Is in the Box
11
Position the EXV Vertically When the EXV Is out of the Box
12
Installation
13
Refrigerant Piping Connections
14
Typical Refrigerant Piping Diagram
14
Prepare Indoor Unit Coil
15
Remove Metering Device from Coil
15
Prepare to Braze
16
Prepare AHU Control Box if EXV Is Inside the Box
16
Install EXV Outside of the Box
16
Remove EXV
16
Brazing Refrigerant Lines
17
Wiring Connections
18
System Communication and Control Wiring
18
0-10V Output Voltage
19
AHU Control Box Wiring Diagram
19
Main Board
19
Typical Power Wiring (VRB Heat Recovery System Shown)
20
Typical System Communication Wiring
21
Connect Sensors
22
Connect Sensors after Brazing
22
Sensor Identification
22
Indoor Unit Coil Component Identification
22
Auxiliary Heat & Alternative Heat
23
Outdoor Unit Compressor Lockout Setpoint Ta
24
Fan Speed Control & Setup
25
Fan Speed Control Input and Output Channels
25
Fan Speed Control Connections
25
Dry Contact Input
25
Configure DIP Switches
26
Alternate and Auxiliary Heat Control Setting
26
AHU Control Kit Quantity & Address Setting
26
ECN1 and SW3-1 Capacity Setting
26
Parallel AHU Control Kit Configurations
27
DEH (Dehumidification) Control Logic Setting
28
Air Handling Unit Fan Speed Setting
28
Parallel Control Setting
29
Heating Source Configuration and Control
29
Main AHU Control Kit Only
29
Fan Speed Digital & Analog Signals Conversion
30
Fan Speed Switching at Ho, Mo & lo
30
Fan Speed Outputs Dependency on One Input
30
Four Parallel Kits Connecting One Large Coil
31
Four Parallel Kits Connecting Four Coils Individually
31
Wiring Examples for Speed Control
33
Cooling Speed Wiring
33
Cooling Speeds Wiring
34
Gas Furnace 2-Speed Wiring
34
Gas Furnace 3-Speed Wiring
35
Electric Air Handler 1-Speed Wiring
36
Electric Air Handler 3-Speed Wiring
37
Variable Speed Wiring
38
Example AHU LII TAA W/ VFD ID Blower
38
Electric Air Handler Variable Speed Wiring
38
Network Address and Commissioning
38
Troubleshooting
39
Fault Code Display on Main AHU Control Kit
39
Digital Display
39
Error Code
39
Fault Code Display on Sub AHU Control Kit
40
Fault Code Display on Controller
40
If the System Operates but It Does Not Sufficiently Cool/Heat
40
The Fan Is Not Operating Continuously
40
Error Code Description
40
Spot Check Instructions
41
Spot Check Performance Main Kit
41
Spot Check Performance Menu in Parallel Control Mode 1, SW5-3=0
41
Spot Check Performance Tracking Register
42
Technical Support
44
4
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Lennox VPB192H4M Specifications
General
Brand
Lennox
Model
VPB192H4M
Category
Air Conditioner
Language
English
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