Power supply terminal wiring - EasyIO - LIT-12014189 - Building Management - EasyIO FW-08V series 8 point variable air volume controller - 1.0

FW-08V Quick Start Guide

Brand
EasyIO
Product name
EasyIO FW-08V series 8 point variable air volume controller
Document type
Quick Start Guide
Document number
LIT-12014189
Version
1.0
Revision date
2023-08-25
Product status
Active
Language
English

Connect the 24 VAC supply power wires from the transformer to the HOT and COM power terminals as shown in figure 15.

Note: The supply power wire colors may differ on transformers from other manufacturers. Refer to the transformer manufacturer’s instructions and the project installation drawings for wiring details.
Important:
  • To reduce noise, interference, and ground loop problems, connect a 24 VAC power supply to the controller and to all other network devices so that transformer phasing is uniform across network devices. The controller does not require an earth ground connection. However, when you need to ground the secondary of the 24 VAC transformer, make only one ground connection near the transformer. For more information, see figure 15.
Figure 1. Transformer grounding
CAUTION
  • Risk of Property Damage
  • Before you apply power to the system, check all wiring connections. If you wire this terminal incorrectly, a short circuit can occur across the 24 VAC power supply on the controller. A short circuit can cause a tripped circuit breaker or a blown fuse. If you use a transformer with a built-in fuse, you may need to replace the transformer.