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Lennox
Air Conditioner
CHA16
Lennox CHA16 User Manual
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Page 39
FIGURE 33
2nd Stage Heat
5th Stage Heat
1st Stage Heat
L1
L2
L3
1st Stage Heat
2nd Stage Heat
2nd Stage Heat Demand
1st Stage Heat Demand
Electric Heat
Pilot Relay K9
Pilot Relay K19
Contactor K15
Contactor K16
Fuse F3
T
ime Delay DL2
T
ime Delay DL4
T
ransformer T2
Electric Heat
T
erminal Strip TB3
Secondary Limit S20
(2 each element)
(10 total 75 kW)
1st Stage
P
ARTS ARRANGEMENT
ELECTRIC HEA
T SECTION
208/230V 75kW AND 460/575V 90kW
3rd Stage Heat
75kW Only
4th Stage Heat
T
ime Delay DL18
3rd Stage Heat
Contactor K17
4th Stage Heat
Contactor K18
5th Stage Heat
Contactor K75
1st Stage Heat
Fuse F3
2nd Stage Heat
Fuse F3
3rd Stage Heat
Fuse F3
4th Stage Heat
Fuse F3
GND
75kW Only
75kW Only
75kW Only
75kW Only
75kW Only
DL2
K9
K19
K15
F3
F3
F3
F3
F3
K16
K17
K18
K75
DL4
DL5
DL18
(12 total 90 kW)
2nd Stage
3rd Stage
Primary Limit S15
(460 & 575V only)
PatchPlate
(in lieu of limit
208/230V only)
Primary Limit S15
(208/230V only)
Redundant Limit S63
(460 & 575V only)
38
40
Table of Contents
Table of Contents
1
Specifications
2
Optional Accessories
3
Electrical Data
7
CHA16-823 Blower Performance
8
CHA16-953 Blower Performance
8
CHA16-1353 Blower Performance
8
CHA16-1603 Blower Performance
9
Blower Data
10
Accessory Air Resistance
11
PED16-185 & PED16-300 Power Exhaust Fans Performance
12
Ceiling Diffuser Air Throw Data
12
823/953 Parts Arrangement
12
1353/1603 Parts Arrangement
13
2553/2753/3003 Parts Arrangement
14
CHA16-823, -953 Control Box Components
14
CHA16-1353, -1603 Control Box Components
15
CHA16-1853 Unit Control Box
15
Application
16
Unit Components
16
Lifting Brackets
16
Control Box Components
16
Blower Motor Overload Relay S42
18
Compressor Delay DL15
18
Pilot Relay Board A11
18
Indoor Blower Contactor K3
18
Cooling Components
19
Low Ambient Lockout Switch
19
Compressor Motor Protector A9, A10
19
CHA16-823, -953 Plumbing Components
20
CHA16-1353,-1603 Plumbing Components
20
CHA16-1853 Plumbing Components Condensing Section - Vapor Lines
21
CHA15-1853 Plumbing Components Condensing Section - Liquid Lines
21
CHA16-823,-953,-1353,-1603 Evaporator Plumbing
22
CHA16-1853 Plumbing Components Evaporator Section
23
CHA16-2553,-2753,-3003 Plumbing Components Evaporator Sections
23
Compressors B1, B2 and B13
24
Crankcase Heaters HR1, HR2 and HR5
24
High Pressure Limit S4, S7 and S28
24
Loss of Charge Switch S24, S25 and S34
24
Thermometer Well
25
Freezestats S49, S50 and S53
25
Condenser Fans B4 and B5
25
Blower Compartment/Power Make-Up Components
25
Low Voltage Terminal Strip TB1
26
Line Voltage Make-Up Strip TB2
26
Typical Blower Compartment and Power Entry
26
Electrical Connections
27
Placement and Installation
27
Startup-Operation
27
Cooling System Service Checks
27
Indoor Blower Operation/Adjustment
28
Blower Operation
28
Determining Unit CFM
28
Maintenance
29
Blower Belt Adjustment
29
Filters
29
Evaporator Indoor Coil
29
Optional ECH16 Electric Heat
30
Matchups and Ratings
34
Electric Heat Components
34
Contactor K15
34
Contactor K16
34
Time Delay DL5
35
Time Delay DL18
35
High Temperature Limit S15
35
High Temperature Limit S63
35
Terminal Strip TB3
36
Transformer T2
36
Heating Elements
36
Accessories
40
RMF16 Mounting Frame
40
OAD16 Outdoor Air Damper
40
Economizer
40
REMD16M Downflow Economizer
41
EMDH16M Horizontal Economizer
42
Economizer Accessories
42
GED16 Gravity Exhaust Dampers
42
PED16 Power Exhaust Damper
42
Warm up Kit
43
Differential Enthalpy
43
Minimum Positioner
44
Enthalpy Sensor
44
Mixed Air Sensor
44
Wiring, Installation, Maintenance
45
Modulating Damper Motor Check
45
Transitions
46
Supply and Return Diffusers
46
Firestats
46
Cycle Control Kit
46
Cycle Control Kit Wiring Diagram
47
Low Ambient Kit
48
Status Panels SP11 and SSP11
48
Low Ambient Kit Typical Installation
48
SP11 Application
49
SSP11 Application
49
Indications and Functions
49
Commercial Controls Hardware
49
Optional Commercial Controls Systems
51
Typical Filter Access Section 15 Ton and Larger Units
51
Warm up Kit Relay Kit Installation 12.5 Ton and Smaller Units
52
Warm up Kit Relay Kit Installation 15 Ton and Larger Units
52
Clocks/Timers
54
C1 Diagram with B9 and A16 Diagrams
56
C1 Diagram with D5 Diagram
58
B41 Diagram with C1 Diagram
62
B9 Diagram with C1 Diagram
64
A2 Diagram with B2 Diagram
70
A5 Diagram with B2 Diagram
73
A6 Diagram with B2 Diagram
74
A7Diagram with B2 Diagram
75
A8 Diagram with B2 Diagram
76
A15 Diagram with B9 Diagram
77
A16 Diagram with B9 Diagram
78
A17 Diagram with B9 Diagram
79
A18 Diagram with B9 Diagram
80
A19 Diagram with B9 Diagram
81
A20 Diagram with B9 Diagram
82
A21 Diagram with B9 Diagram
83
A22 Diagram with B9 Diagram
84
A23 Diagram with B9 Diagram
85
A24 Diagram with B9 Diagram
86
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Lennox CHA16 Specifications
General
Brand
Lennox
Model
CHA16
Category
Air Conditioner
Language
English
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