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CB29M-41
Lennox CB29M-41 User Manual
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Page 10
CB29M & CB30M P
ARTS ARRANGEMENT
FIGURE 1
CONTROL BOX
ELECTRIC HEA
T
SECTION
BLOWER
COMP
ARTMENT
COIL
HORIZONT
AL
DRAIN P
AN
EXP
ANSION
VA
L
V
E
BLOWER ACCESS
P
ANEL
COIL ACCESS
P
ANEL
FIGURE 2
CB29M and CB30M CONTROL BOX
TRANSFORMER
(T1)
SMALL ELECTRIC HEA
T
KNOCK OUT FOR
2.5 – 15 kW
TERMINAL
STRIP (TB1)
TERMINAL
STRIP (TB1)
BRACKET FOR
TERMINAL STRIP
BLOWER
RELA
Y (K3)
LARGE ELECTRIC HEA
T
KNOCK OUT FOR
20 – 30 kW
GROUNDING
LUGS
C
G
W1
W2
W3
R
TRANSFORMER (T26)
(575 VOL
T
ONL
Y)
DOOR INTERLOCK
SWITCH (S51)
9
11
Table of Contents
Ecb29-8
2
Specifications –Cb29M
2
Blower Data – Cb29M
3
CB29M-21/26 BLOWER PERFORMANCE (208/230V)
3
CB29M-31 BLOWER PERFORMANCE (208/230V)
3
CB29M-41 BLOWER PERFORMANCE (208/230V)
3
CB29M-41 BLOWER PERFORMANCE (460V – 1 Ph)
4
CB29M-46 BLOWER PERFORMANCE (208/230V)
4
CB29M-51 BLOWER PERFORMANCE (208/230V)
4
CB29M-51 BLOWER PERFORMANCE (460V – 1 Ph)
5
CB29M-65 BLOWER PERFORMANCE (208/230V)
5
CB29M-65 BLOWER PERFORMANCE (460V – 1 Ph)
5
Ecb29-12.5Cb
6
Specifications – Cb30M
6
Blower Data – Cb30M
7
CB30M-21/26 BLOWER PERFORMANCE (208/230V)
7
CB30M-31 BLOWER PERFORMANCE (208/230V)
7
CB30M-41 BLOWER PERFORMANCE (208/230V)
7
CB30M-41 BLOWER PERFORMANCE (460V)
8
CB30M-46 BLOWER PERFORMANCE (208/230V)
8
CB30M-51 BLOWER PERFORMANCE (208/230V)
8
CB30M-51 BLOWER PERFORMANCE (460V – 1 Ph)
9
CB30M-65 BLOWER PERFORMANCE (208/230V)
9
CB30M-65 BLOWER PERFORMANCE (460V – 1 Ph)
9
Cb29M & Cb30M Parts Arrangement
10
Cb29M and Cb30M Control Box
10
Application
11
Control Box
11
Door Interlock Switch (S51)
11
Unit Components
11
460 Volt Blower Motor Windings
12
Blower Motor (B3)
12
Coil
12
Plastic Drain Pans
12
Electric Heat Data (1 Phase) – Cb29M–21/26 & Cb29M–31
13
Table of Contents
14
Electric Heat Data (1 Phase) – Cb29M–41 & Cb29M–46
14
Electric Heat Data (1 Phase) – Cb29M–51 & Cb29M–65
15
Ecb29-15Cb
16
Ecb29-12.5Cb
18
Electric Heat Data (1 Phase) – Cb30M–21/26 & Cb30M–31
18
Ecb29-10
19
Electric Heat Data (1 Phase) – Cb30M–41 & Cb30M–46
19
Electric Heat Data (1 Phase) – Cb30M–51 & Cb30M–65
20
208/230 Volt Electric Heat Sections
23
Electric Heat Components
23
Matchups and Ratings
23
Optional Ecb29 Electric Heat
23
Circuit Breaker
24
Fuse (F3)
24
Heating Elements
24
Terminal Strip (TB2)
24
Ecb29-12.5Cb
24
Electric Heat Vestibule Parts Arrangement
25
Ecb29-12.5Cb, -15Cb 208/230 Single & Three Phase
26
Ecb29-20Cb 208/230 Single Phase
26
Ecb29-8, -10 208/230 Three Phase
26
Ecb29-10, -15, -20, -25 460V Three Phase
27
Ecb29-20, -25 575V Three Phase
27
Ecb29-20Cb, -25Cb 208/230 Three Phase
27
Ecb29-25Cb, -30Cb 208/230 Single Phase
27
Configuration Modifications
28
Disassembly of CB30M Cabinet
28
Downflow Application
28
Upflow Application
28
Downflow Combustible Base Dimensions
29
Hanging Horizontal Unit
29
Horizontal Right–Hand Discharge Application
29
Right–Hand Discharge Configuration
29
Field Modification for Left-Hand Discharge
30
Horizontal Left–Hand Discharge Application
30
Left–Hand Discharge Configuration
30
Condensate Drain
31
Cooling Start-Up
31
Preliminary and Seasonal Checks
31
Start-Up – Operation
31
Blower Operation and Adjustment
32
Blower Speed Taps
32
External Static Pressure
32
Typical Operating Characteristics
32
Electrical
33
Filters
33
Maintenance
33
Supply Air Blower
33
Cb29M & Cb30M – 208/230V Single Phase – Sequence of Operation
34
Cooling
34
Heating
34
Wiring Diagrams and Sequence of Operations
34
CB29M – 460 and 575V THREE PHASE – SEQUENCE of OPERATION
35
First Stage Heat
37
Second Stage Heat
37
F–Ecb29-20Cb – 208/230V Single Phase – Sequence of Operation
39
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Lennox CB29M-41 Specifications
General
Brand
Lennox
Model
CB29M-41
Category
Air Conditioner
Language
English
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