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Terminal Block Assignments — High Voltage (TB2) Terminal Block
STORM
Label
MASTER ALARM RELAY
22
MASTER ALARM RELAY
21
RELAY A
20
RELAY A
19
RELAY B
18
RELAY B
17
RELAY C
16
RELAY C
15
RELAY D
14
RELAY D
13
GROUND
12
GROUND
11
[120V+] AIR DAMPER
10
AIR DAMPER INTERLOCK
9
[120V+] AUXILIARY #1
8
AUXILIARY INPUT #1
7
6
5
START INTERLOCK #1
4
START INTERLOCK #1
3
START INTERLOCK #2
2
START INTERLOCK #2
1
NOTE:
On the ST-6000 there is NO Start Interlock #2.
Revised: December 8, 2021
Released: December 8, 2021
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
External Interlock Circuit #1
External Interlock Circuit #2 (In Series w/ #1)
Patterson-Kelley 2021
All Rights Reserved.
TM
P-K Storm
Gas Fired Boiler
Technical Service 1.877.728.5351
2691000273 P-K Storm ST2500-ST6000
Installation and Owners Manual Rev C.docx
Page 78
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