Savant SST-W100, Руководство по развертыванию

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5. Powering the Thermostat
The SST-W100 requires 24V AC to power. The 24V AC can be supplied using one or two transformers. The
next few diagrams display the di
ff erent power scenarios.
Input Voltage Range: 19V AC - 28V AC
One Transformer
If there is only one transformer powering the heating, cooling, or both, follow the diagram below.
One Transformer Scenario:
• Connect the hot side of the transformer to the
24RC terminal.
• Connect the common side of transformer to the
24C terminal.
• DO NOT cut jumper JP1 . JP1 is located on the
bottom right section of the circuit board.
Additional Information:
To power the SST-W100, both a power wire and a
common wire is required. Some older systems do
not connect the common wire from the HVAC
system to the thermostat. In this scenario, a
separate common wire will need to be run.
Two Transformers
If there is a separate transformer powering the heating and cooling system, follow the diagram below.
Two Transformer Scenario:
• Cut jumper JP1 to separate the 24RH and 24RC
terminals. JP1 is located on the bottom right side
of the PCB.
• Connect the hot side of the transformer
powering the cooling system to the 24RC
terminal.
• Connect the hot side of the transformer
powering the heating system to the 24RH
terminal.
• Connect the common wire from the transformer
from the cooling system to the 24C terminal.
Additional Information:
To power the SST-W100, both a power wire and a
common wire is required. Some older systems do
not connect the common wire from the HVAC
system to the thermostat. In this scenario, a
separate common wire will need to be run.
Additional Information
• The
24RC terminal supplies power to the SST-W100 PCB board as well as to the Y1 , Y2 , and G relays.
• The
24RH terminal supplies power to just the W1 , W2 , and O relays.
Refer to the wiring diagrams in the Wiring Diagrams section below for more information on connecting
power as well as information on wiring the HVAC system to the thermostat.
SST-W100 Wireless Thermostat Deployment Guide Copyright © 2016 Savant Systems, LLC
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