Terminal Block Assignments; Terminal Block Assignments - High Voltage (Tb2) Terminal Block - Patterson-Kelley P-K MACH CM300 Installation & Owner's Manual

7.1 Terminal Block Assignments

7.1.1 Terminal Block Assignments — High Voltage (TB2) Terminal Block
Terminal
Label
Number
MASTER ALARM RELAY
25
MASTER ALARM RELAY
24
RELAY A
23
RELAY A
22
RELAY B
21
RELAY B
20
RELAY C
19
RELAY C
18
RELAY D
17
RELAY D
16
GROUND
15
[120V+] AIR DAMPER
14
AIR DAMPER INTERLOCK
13
[120V+] AUXILIARY #1
12
AUXILIARY INPUT #1
11
[120V+] AUXILIARY #2
10
AUXILIARY INPUT #2
9
START INTERLOCK #1
8
START INTERLOCK #1
7
START INTERLOCK #2
6
START INTERLOCK #2
5
GROUND G1
4
NEUTRAL N1
3
N/A
2
HOT L1
1
Revised: January 3, 2020
Released: January 3, 2020
Description
Normally-Open Dry Contact, Close on Alarm
(240VAC Max Voltage & 1/2Amp Max Current)
User-Configurable Normally-Open Dry Contact A
(240VAC Max Voltage & 1/2Amp Max Current)
User-Configurable Normally-Open Dry Contact B
(240VAC Max Voltage & 1/2Amp Max Current)
User-Configurable Normally-Open Dry Contact C
(240VAC Max Voltage & 1/2Amp Max Current)
User-Configurable Normally-Open Dry Contact D
(240VAC Max Voltage & 1/2Amp Max Current)
Ground Terminals for I/O Devices
120VAC Pilot-Duty for Air Damper End Limit Switch
Contact Closure When Air Damper Proven Open
Reserved for Future Use
Reserved for Future Use
External Interlock Circuit #1
(110-120VAC, Single phase, 60Hz)
External Interlock Circuit #2 (In Series w/ #1)
(110-120VAC, Single phase, 60Hz)
G1 for 110-120VAC, Single phase, 60Hz
N1 for 110-120VAC, Single phase, 60Hz
N/A
L1 for 110-120VAC, Single phase, 60Hz
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Installation and Owners Manual (Rev F Jan-2020).docx
Gas Fired Boiler
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