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BAC020SNM
Lennox BAC020SNM User Manual
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Pr
oviding indoor climate comfort
BAL
TIC R410A
BAL
TIC R410A-IOM-0708-E
Installation, operating
and maintenance
2
Table of Contents
Table of Contents
3
Default Chapter
3
BALTIC R410A-IOM-0708-E Page
3
BALTIC R410A-IOM-0708-E Page
4
Commissioning Report
6
General Information
9
Installation
12
Transport - Handling
12
Mandatory Handling Devices
13
Dimensions and Weights
14
Lifting the Units
15
Lifting the Roofcurbs
16
Lifting the Energy Recovery Module
17
Preliminary Checks
18
Minimum Clearance Around the Unit
19
Installation on Roof Mounting Frames
20
Positioning Roofcurb
20
Non Adjustable Non Assembled Roof Curb
21
Securing the Curb
23
Curbing and Flashing
23
Heat Recovery Installation
24
Economiser and Extraction
25
Commissioning
27
Electrical Connections
27
Preliminary Checks
27
Starting the Unit
28
Powering the Unit
29
Arrangement Drawings
30
BALTIC BAC-BAH-BAG-BAM 020 to 075
30
Non Adjustable Roofcurb
38
Adjustable Roofcurb
39
Multidirectional Horizontal Roofcurb
43
Exhaust Vertical Roofcurb
47
Exhaust Horizontal Roofcurb
51
Transition Roofcurb
54
Energy Recovery Option
55
Ventilation
59
Belt Tension
59
VENTILATION Belt Tension
59
Mounting & Adjusting Pulleys
60
Airflow Balancing
61
Filters
72
Fan Starter
73
Hot Water Coils
74
Electric Heater
76
Climatic 50 - Rooftop - Version 23
94
Wiring Connections
95
Important Warning
95
Connection
95
Sensors and Probes
95
DS 50 Display
95
DC 50 or DM 50 Display (Remote Connection)
96
Connection on DT50 Derivator
96
Ferrites Protection of Display
97
DM50 and Master/Slave Communication
97
BMS Communication
98
Customized Input/Output
99
Digital Outputs Nc or no - Dry Contacts
99
Digital Inputs 24V AC or DC
99
Analog Inputs
100
Ambient Temperature Setpoint Offset - 4-20 Ma Signal
100
Minimum Fresh Air Setpoint - 4-20Ma Signal
100
Entry for a Meteorological Sensor
100
Input for Meteorological Sensor for Relative Humidity
100
Free Temperature Probe Connection
100
Free Relative Humidity Sensor Connection
100
Scheduling - Clock Setting
101
600 DC Comfort and DM 50 Multi Customer Display
102
Buttons
102
Brightness/Contrast
102
Functions with DM50
103
Main Screen
103
Hour Override
103
Clock Menu
104
Programming" Menu
104
Alarms
105
Start/Stop
106
Week Override
106
BMS Address Tables
107
Modbus, Trend, Bacnet & CAREL
107
Lonworks
112
Error Codes
114
Hot Water Coil Diagram
118
Maintenance Diagnostic
119
Maintenance Plan
122
Warranty
125
Certificates
126
5
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Lennox BAC020SNM Specifications
General
Voltage
208/230V
Refrigerant
R-410A
Phase
Single
Dimensions (Outdoor Unit)
28.5"H x 31.5"W x 31.5"D
Cooling Capacity
20, 000 BTU/h
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