CLI-REL1AUX1-00 | 009-1805-00 | 190613
Copyright 2019 Savant Systems, LLC
45 Perseverance Way, Hyannis, MA 02601
| 508.683.2500
2 of 2
Use the diagrams below when making the RS-485 connections be-
tween the thermostat and CLI-REL1AUX1 climate module.
Use the diagrams below when making the power connections be-
tween the thermostat and CLI-REL1AUX1 climate module.
When making connections, follow the guidelines set below to ensure a
safe and secure connection
Use the diagrams below when making connections to a piece of
equipment such as a humidifier, dehumidifier, or external vent damper.
Use the diagrams below when making connections between the relay
outputs and the connections at the HVAC equipment.
RS-485 Connections
Power Connections
Making Connections
Auxiliary Relay Connections
Additional Information
Relay Connections
– Max cable length is 1000 feet (304.8 meters).
– Savant recommends using standard RS-485 cable for wire runs.
– The auxiliary relay does not have a voltage connected to it. There-
fore an external source connected in series with the equipment is
required.
– Use only HVAC approved wiring to make the connections.
– The Common wire connection is made through the power wire
connections. This is shown in the Power Connections diagram to
the left.
– Power can be daisy-chained between modules.
– The cable lengths vary depending on the size of the wire. See the
specifications table on page 1 for more information.
– Power applied across the C and RH terminals will power the mod-
ule and supply voltage to relays W1, W2, and O.
– Add a jumper between the RH and RC terminal to supply power to
the Y1, Y2, and G relays. If separate power supplies for heating and
cooling are available and you would like to use that power, do not
install jumper. Instead, connect the transformer from the cooling
equipment between the RC and C terminal.
Refer to the following documents located on the
Savant Customer
Community
for additional information.
– Multistat Smart Thermostat Deployment Guide (009-1636)
– Multistat Thermostat with Touchscreen QSG (009-1593)
o
G
AUX
OUT
AUX
IN
RS2
RS1 GND
GND
GND
R
X-
RX+
GND
1-
WIRE
5V D
C
Y2
Y1
W2
W1
RC
RH
TX+
(TX+)
TX-
(TX-)
24C
Left Side View
RS-485 Cable
CLI-REL1AUX1
o
G
AUX
OUT
AUX
IN
RS2
RS1 GND
GND
R
X-
RX+
GND
1-
WIRE
5V
DC
Y2
Y1
W2
W1
RC
RH
TX+ TX- 24C
Relay
Status
W1
W2
Y1
CLI-REL1AUX1-00
S/N:
UID:
SHR180901332
001AAE09CA2D0000
Y2
G
O
Aux
Com
NO
NC
C
RH
RC
Power can be
daisy-chained
to other modules
24V AC
from HVAC
Add jumper to
power Y1, Y2, and G
W1
1st Stage
Heat
2nd Stage
Heat
FURNACE
CONNECTIONS
AIR CONDITIONER
CONNECTIONS
Compressor
1st Stage
Compressor
2nd Stage
Fan Relay
W2
C
C
Y2
Relay
Connect to Reversing Valve
in a Heat Pump system
Status
W1
W2
Y1
CLI-REL1AUX1-00
S/N:
UID:
SHR180901332
001AAE09CA2D0000
Y2
G
O
Aux
Com
NO
NC
C
RH
RC
Y1
G
Relay
Status
Thermostat Power
Supplies power to
solenoid on
humidifier or dehumidifier
120V AC
120V AC
W1
W2
Y1
CLI-REL1AUX1-00
S/N:
UID:
SHR180901332
001AAE09CA2D0000
Y2
G
O
Aux
Com
NO
NC
C
RH
RC
HUMIDIFIER
DEHUMIDIFIER
OR
Humidifier or Dehumidifier
External Vent Damper
Relay
Status
Thermostat Power
Supplies power to
the vone damper
Vent Damper
120V AC
120V AC
W1
W2
Y1
CLI-REL1AUX1-00
S/N:
UID:
SHR180901332
001AAE09CA2D0000
Y2
G
O
Aux
Com
NO
NC
C
RH
RC
< 1/8 inch of
bare wire
exposed
1. With a small slotted screwdriver, turn
the screws on the connector coun-
terclockwise (CCW) until the silver
crimps open enough to slide a wire
into the square slots.
2. Strip back insulation on each wire to
1
/4
inch and insert the stripped wire
into the proper connection.
3. Turn the screw clockwise (CW) until
the crimps tighten around each wire.
Tug on each wire a bit to verify they
are secure.
