Terminal Block Assignments - High Voltage (Tb2) Terminal Block - Patterson-Kelley MACH C-1500H Installation & Owner's Manual

7.1.3 Terminal Block Assignments — High Voltage (TB2) Terminal Block
C-1500H
C-2000H
Terminal
Number C-2500
Label
25 MASTER ALARM RELAY
24 MASTER ALARM RELAY
23
22
21
20
19
18
17
16
N/A
15
14 [120V+] AIR DAMPER
13 AIR DAMPER INTERLOCK
12 [120V+] AUXILIARY #1
11 AUXILIARY INPUT #1
10 [120V+] AUXILIARY #2
9 AUXILIARY INPUT #2
8 START INTERLOCK #1
7 START INTERLOCK #1
6 START INTERLOCK #2
5 START INTERLOCK #2
4 GROUND G1
3 NEUTRAL N1
2 Unused
1 HOT L1
Revised: January 3, 2020
Released: January 3, 2020
C-3000
C-4000
Label
RELAY A
RELAY A
RELAY B
RELAY B
RELAY C
RELAY C
RELAY D
RELAY D
GROUND
GROUND
Unused
Unused
Unused
Unused
 Patterson-Kelley 2020
All Rights Reserved.
P-K MACH
Technical Service 1.877.728.5351
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 Limit Switch
Contact Closure When Air Damper Proven Open
Reserved for Future Use
Reserved for Future Use
External Interlock Circuit #1
External Interlock Circuit #2 (In Series w/ #1)
G1 for 110-120VAC, Single phase, 60Hz
N1 for 110-120VAC, Single phase, 60Hz
L1 for 110-120VAC, Single phase, 60Hz
1004905981 P-K MACH C1500H-C4000 Installation and
Owners Manual (Rev F Jan-2020).docx
®
Gas Fired Boiler
Page 74