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MAGNUM FIRST M9-TS1 24 Volt Intelligent Thermostat Owner’s Manual
M9-TS1
24 Volt Intelligent Thermostat (with 4.3” LCD Display)
Wiring Diagram:
Hot
LC
AC
L5
L4
L3
L2
L1
24 VAC
high med
fan fan
relay relay relay
low
fan
CLG HTG
VALVE VALVE
Common
AQ1: Aquastat Connection - AQ2
AQ2: Aquastat Connection 2 - Jumper to AQ1
GND: Common for 0-10 Volt Output and Thermistor Input
T: Temperature Input - External Thermistor
CV: Control Voltage Output - 0-10 Volts
LC: Load Common, AC - COMM
AC: Load Hot, AC - 24 VAC
L5: Load 5 - Heat
L4: Load 4 - Cool / Compressor
L3: Load 3 - Low Fan Relay
L2: Load 2 - Medium Fan Relay / Cool 2*
L1: Load 1 - High Fan Relay / Reverse Valve / Heat 2*
*Depending on Thermostat Configuration
Conventional HVAC Systems:
Commonly Used
Wiring Terminal
Designators
Possible Signal
Names /
Functions
Possible Wire
Color
Comments
24VAC Com-
mon
From one side of the 24 VAC transformer, usually called the com-
mon side.
C
Black
Red
From the other side of the 24VAC transformer, usually called the
hot side. The thermostat may connect this terminal with W (call for
heat) or Y (call for cool), if RH and RC are not used / available. Some
thermostats also use this supply to power themselves.
R or V
24 VAC Hot
24VAC hot usu-
ally used for
call for heat
Functions as the source of power for the W terminal. Ther thermo-
stat usually connects this terminal with W when it calls for heat.
RH or 4
Red
24VAC hot usu-
ally used for
call for cool
Functionas as the source of power for the Y terminal. Ther thermo-
stat usually connects this terminal with Y when it calls for heat.
RC
G
Red
Activate blower
fan
Ther fan switch on the thermostat usually connects this terminal
with R when it is in the ON position.
Green
Ther thermostat usually connects this terminal with R or RG when it
calls for heat. Ther thermostat usually connects this terminal with
G when the fan switch is set to AUTO. Some thermostats require a
jumper from W to Y if a heat pump is used. Other thermostats might
use this as a second-stage heating. Sometimes W2 designates
auxilary heating in systems that use heat pumps.
W or W1 or W2
White
Call for heat
Call for cool
Ther thermostat usually connects this terminal with R or RC when it
calls for heat. The thermostat usually connects this terminal with G
when the fan switch is set to AUTO. Could also be for cooling of the
first-stage heating on a heat pump.
Y
Yellow
Varies
Outside air
temperature
display
Used to display the outside air temperaturre on some digital
thermostats.
S1 and S2
| General | Details |
|---|---|
| Name | MAGNUM FIRST M9-TS1 24 Volt Intelligent Thermostat Owner’s Manual |
| Make | MAGNUM FIRST |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.05 MB |
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