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Job Name:
Job Number:
Model Numbers:
myRoom
3691130a 1 10.08.19
Lutron Fan Coil Unit Controller
The Fan Coil Unit (FCU) Controller is designed for control
of 2-pipe and 4-pipe fan coil units. The Fan Coil Unit
Controller interfaces with the myRoom Palladiom QS
Thermostat.
Model Numbers
SMC53-MYRM – Basic fan coil unit controller
5 relay output
SMC55-MYRM – Advanced fan coil unit controller
5 relay and (3) 0–10 V- output
Features
Use with the myRoom Palladiom QS thermostat.
Controls 2-pipe and 4-pipe fan control units
On / Off valves
0–10 V- valves (SMC55-MYRM only)
3-speed fan control
0–10 V- fan control (SMC55-MYRM only)
Supports a supply water temperature sensor for auto
cool/heat changeover with 2-pipe FCU.
Supports an optional wired return air temperature sensor
to allow for flexibility regarding thermostat installation
location. The wired return air temperature sensor is used
instead of the internal thermostat sensor.
myRoom Fan Coil Unit Controller
Model Number Operating Voltage
Relay Output
0–10 V- Rating
General Purpose Fan Motor
SMC53-MYRM
12–24 V~ / 24 V-
1
;
4 W/6 VA or 5 power
draw units (PDU) on
the QS link.
2
24 V~ /100 V~ /
120 V~ /220–240 V~
2 A maximum
100 V~ / 120 V~ /
220–240 V~ 2 FLA /
12 LRA maximum
3
Not Supported
SMC55-MYRM
Maximum 28 mA at 10 V-
outputs
4,5
1
A listed Class 2, LPS, or SELV <15 W limited energy supply should be used.
2
For complete information, see the Power Draw Units on the QS Link Spec (Lutron P/N 369405) at www.lutron.com
3
If the fan exceeds these ratings, interposing relays must be used between the FCU controller and the HVAC unit. Do not connect directly to capacitive loads.
4
When using a 0 –10 V- fan or valve control, a different power supply must be used to power the FCU controller and the 0 –10 V- fan/valve actuators. For more information, see
Application Note #651 (048651) at www.lutron.com
5
All three 0–10 V- outputs cannot deliver more than 40 mA combined.
1
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myRoom
3691130a 2 10.08.19
Lutron Fan Coil Unit Controller
Use the table below to identify which model(s) supports the HVAC system features. All models currently only
support Fan Coil Units. Contact Lutron if using a different HVAC system.
System Configuration
Valve / Element
Control
Fan Control
(Fan Type)
2-Pipe / Single
Thermal Type
(2-pipe mode)
Basic
Configuration
Number
Basic Configuration
Supported Models
SMC53x SMC55x
• 4-pipe
2-pipe cooling with resistive
heating element
Two On / Off relays
or floating point
relays
1
H / M / L Relays N / A 01
0—10 V- Signal N / A 02
Two 0–10 V-
signals or one relay
and one 0–10 V-
H / M / L Relays N / A 03
0—10 V- Signal N / A 04
• 2-pipe heating only
• 2-pipe cooling only
2-pipe with a changeover
sensor
One On / Off relay
or floating point
relay
1
H / M / L Relays
Changeover Sensor 05
Heating only 06
Cooling only 07
0—10 V- Signal
Changeover Sensor 08
Heating only 09
Cooling only 10
One 0–10 V-
signal
H / M / L Relays
Changeover Sensor 11
Heating only 12
Cooling only 13
0—10 V- Signal
Changeover Sensor 14
Heating only 15
Cooling only 16
Model Compliance
1
Floating point valve control requires SMC55x. See App Note #630 (048630) on www.lutron.com
2
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3691130a 3 10.08.19
Lutron Fan Coil Unit Controller
Specifications
Regulatory Approvals
cULus Listed
CE Certified
NOM certified
RoHS compliant
FCC 15 / ICES-003 Class B
Input Characteristics
Power supply (not isolated): 12 24 V~ 50 / 60 Hz
±10% or 24 V- ±10%, listed Class 2, LPS, or SELV
limited energy supply <15 W
Maximum power consumption: 4 W / 6 VA / 5 PDUs
1
Analog Inputs: (2) Thermistor inputs
– Type: NTC (103 AT)
– Value: 10 K at 77 ˚F (25 ˚C)
– Range: -58 ˚F–212 ˚F (-50 ˚C–100 C)
– Resolution: 0.18 ˚F (0.1 ˚C)
– Accuracy: 1% full scale
Output Characteristics
Relay Outputs: (5) SPST relays Normally Open rated for:
2 A at 24 V~ / 100 V~ / 120 V~ / 220–240 V~
general purpose
2 FLA / 12 LRA at 100 V~ / 120 V~ / 220–240 V~
motor load
Analog Outputs: (3) 0–10 V- outputs
2
Maximum 28 mA at 10 V- per output
3
Resolution: 1%
Accuracy: 2% full-scale
Environment
Ambient operating temperature: -4 ˚F to 122 ˚F
(-20˚C to 50 ˚C)
Storage temperature: −40 °F to 185 °F
(−40 °C to 85 °C)
0% to 90% relative humidity, non-condensing
Indoor use only
Product rated for IP20
Pollution degree 2
Enclosure
Controller must be installed in a listed
NEMA Type-1 enclosure or IP20 rated
enclosure with conformance to IEC 61439-3
(or equivalent standard)
Enclosure should be secured by a keyed or tooled
locking mechanism
Enclosure must comply with spacing listed in the
Mounting section
1
See Power Draw Units on the QS Link (P/N 369405) at www.lutron.com
for more information.
2
When using 0–10 V- fan or valve control, a different power supply must be
used to power the FCU controller and the 0–10 V- fan / valve actuators. For
more information, see Application Note #651 (048651) at www.lutron.com
3
All three 0–10 V- outputs, together, cannot deliver more than 40 mA.
3
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myRoom
3691130a 4 10.08.19
Lutron Fan Coil Unit Controller
GCU-HOSP
myRoom
IEC PELV
/
SELV
/
NECR Class 2
www.lutron.com/qs
lutron.com
PWR
2 1
COM
P
5 4
3
L2
L1
2.0 A
/
L1, L2
24
36 V-
250 mA
QS L1
1
2 3 4
5
COM
V+
MUX
D
MUX
QS L2
1
2 3 4
5
COM
V+
MUX
D
MUX
L2 TX
/
RX
L1 TX
/
RX
PWR
ERR
L1
L2
L1
L1
FD/Col
Con/Act
RJ45
FD/Col
Con/Act
RJ45
24
36 V-
System Diagram
GCU-HOSP
Fan Coil Unit Controller
Listed NEMA®
Type-1 enclosure or
IP20 rated enclosure
with conformance
to IEC 61439-3 (or
equivalent standard)
1
QS Link
Palladiom QS
Thermostat
Valve and Fan Control
Signals
To Other QS Devices
Fan CoilUnit
(by others)
Thermostat Communication Link
1
Enclosure must meet the minimum clearance requirements and should be secured by a keyed or tooled locking mechanism.
4
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3691130a 5 10.08.19
Lutron Fan Coil Unit Controller
Dimensions
Measurements shown as: in (mm)
Front View
Side View
3.4
(87)
2.75
(70)
0.2
(5)
2.4
(62)
5
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3691130a 6 10.08.19
Lutron Fan Coil Unit Controller
Mounting
The FCU controller is to be installed in any listed NEMA® Type-1 enclosure or IP20 rated enclosure with
conformance to IEC 61439-3 (or equivalent standard). Enclosure must meet the minimum clearance requirements.
Enclosure should be secured by a keyed or tooled locking mechanism. All pertinent state, regional and local
safety regulations must be observed when installing and using this product. Use metal enclosures to improve the
electromagnetic immunity of the controller system.
Minimum Clearances
Measurements shown as: in (mm)
Acceptable DIN Rail Dimensions
Measurements shown as: in (mm)
1 2 3
AM1DE200 (IEC / EN60715)
AM1DP200
1.38
(35)
1.46
(37)
1.38
(35)
0.59
(15)
0.28
(7)
0.59
(15)
0.22
(5.5)
0.04
(1)
0.04
(1)
0.06
(1.5)
0.06
(1.5)
0.7
(17.8)
2.75
(70)
0.8
(20)
3.4
(87)
0.8
(20)
0.8
(20)
0.3
(7.6)
2.4
(61)
6
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Lutron Fan Coil Unit Controller
Relay outputs terminal:
Screw terminal blocks for On / Off
valves and 3-speed fan
4 3
G
5
AO
4321
Connections
Cable Type
Wire
Size
AWG 24 to 14 22 to 14
2 x
24 to 18
2 x
24 to 16
2 x
22 to 18
2 x
20 to 16
mm
2
0.2 to 2.5 0.25 to 2.5
2 x
0.2 to 1.0
2 x
0.2 to 1.5
2 x
0.25 to 1.0
2 x
0.5 to 1.5
Recommended torque for terminals:
4.4 to 5.3 in-lb
(0.5 to 0.6 N•m)
White (+) (MUX)
Gray (G) (Com)
Black (–) (_)
Note: The thermostat communication link wire harness
can be extended up to 500 ft (152.5 m) using 18 AWG
(1.0 mm
2
) and a pair of 22 AWG (0.25 mm
2
) twisted
pair, shielded cable. Analog I / O wire harnesses can be
extended up to 100 ft (30.5 m) using 18 AWG or
22 AWG (1.0 mm
2
or
0.25 mm
2
) twisted pair,
shielded cable.
(–)(+)(G)
Wire harness for thermostat
communication link (included in
wire harness kit)
Controller Power
Listed Class 2, LPS, or SELV <15 W
limited energy supply
Red 12–24 V~/24 V-
Gray / Red Common
Wire harness for 0–10V-
valves and fan controls
Not used
White (heat)
Black (common)
Green (fan)
Yellow (cool)
Black
Black
Sensor isolated common connections
(for changeover sensor, remote temperature
sensor, etc.)
Blue / Red (changeover sensor)
Blue (remote temperature sensor)
7
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3691130a 8 10.08.19
Lutron Fan Coil Unit Controller
Continued on next page...
Wiring
Wiring Diagram 1 (SMC53-MYRM or SMC55-MYRM)
2-pipe System
On / Off Valve
3-speed Fan
Changeover Sensor
Wire the controller according to the diagram below that corresponds to the system, valve, and fan type of
the FCU. To extend relay life, each inductive load, driven by the relay contacts, must include a suppression device
such as a peak limiter, and RC circuit.
5
6
7
8
9
10
11
12
4 3
G
5
AO
Valve In (24 V~ / 100 V~ / 120 V~ / 220–240 V~)
Fan In (24 V~ / 100 V~ / 120 V~ / 220–240 V~)
Common
Changeover sensor **
Controller Power*
Listed Class 2, LPS, or SELV <15 W
limited energy supply
12–24 V~/24 V-
Valve
Fan High
Fan Medium
Fan Low
G
3
G
2
G
1
R
FAN
R
VALVE
Valve
* If the signal source from the HVAC system is not 12–24 V~ / 24 V-, use a separate supply to power the HVAC controller.
** Sensor is optional. Semitec 103AT or equivalent – NTC 10 k at 25 °C.
8
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3691130a 9 10.08.19
Lutron Fan Coil Unit Controller
Wiring (continued)
Continued on next page...
Wiring Diagram 2 (SMC55-MYRM only)
2-pipe System
On / Off Valve
010 V- Controlled Fan
Changeover Sensor
* If the signal source from the HVAC system is not 12–24 V~ / 24 V-, use a separate supply to power the HVAC controller.
** Sensor is optional. Semitec 103AT or equivalent – NTC 10 k at 25 °C.
5
6
7
8
9
10
11
12
4 3
G
5
AO
Valve In (24 V~ / 100 V~ / 120 V~ / 220–240 V~)
Common
Changeover sensor **
Controller Power *
Listed Class 2, LPS, or SELV <15 W
limited energy supply
12–24 V~/24 V-
Valve
G
3
G
2
G
1
R
FAN
R
VALVE
Valve
Common
Fan
0–10 V-
9
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3691130a 10 10.08.19
Lutron Fan Coil Unit Controller
Continued on next page...
Wiring (continued)
Wiring Diagram 3 (SMC55-MYRM only)
2-pipe System
010 V- Valve
3-speed Fan
Changeover Sensor
5
6
7
8
9
10
11
12
4 3
G
5
AO
Fan In (24 V~ / 100 V~ / 120 V~ / 220–240 V~)
Common
Changeover sensor **
Controller Power *
Listed Class 2, LPS, or SELV <15 W
limited energy supply
12–24 V~/24 V-
Fan High
Fan Medium
Fan Low
G
3
G
2
G
1
R
FAN
R
VALVE
Valve
Valve
Common
0–10 V-
* If the signal source from the HVAC system is not 12–24 V~ / 24 V-, use a separate supply to power the HVAC controller.
** Sensor is optional. Semitec 103AT or equivalent – NTC 10 k at 25 °C.
10
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3691130a 11 10.08.19
Lutron Fan Coil Unit Controller
Wiring (continued)
Wiring Diagram 4 (SMC55-MYRM only)
2-pipe System
010 V- Valve
010 V- Controlled Fan
Changeover Sensor
Continued on next page...
5
6
7
8
9
10
11
12
4 3
G
5
AO
Common
Changeover sensor **
Controller Power *
Listed Class 2, LPS, or SELV <15 W
limited energy supply
12–24 V~/24 V-
No relay output used
G
3
G
2
G
1
R
FAN
R
VALVE
Valve
* If the signal source from the HVAC system is not 12–24 V~ / 24 V-, use a separate supply to power the HVAC controller.
** Sensor is optional. Semitec 103AT or equivalent – NTC 10 k at 25 °C.
Common
Fan
0–10 V-
Valve
11
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3691130a 12 10.08.19
Lutron Fan Coil Unit Controller
Wiring Diagram 5 (SMC53-MYRM or SMC55-MYRM)
4-pipe System
On / Off Valve
3-speed Fan
Wiring (continued)
Continued on next page...
5
6
7
8
9
10
11
12
4 3
G
5
AO
Hot Valve In (24 V~ / 100 V~ / 120 V~ / 220–240 V~)
Fan In (24 V~ / 100 V~ / 120 V~ / 220–240 V~)
Common
Controller Power *
Listed Class 2, LPS, or SELV <15 W
limited energy supply
12–24 V~/24 V-
Hot Valve
Fan High
Fan Medium
Fan Low
G
3
G
2
G
1
R
FAN
R
VALVE
Valve
Cold Valve
Cold Valve In (24 V~ / 100 V~ / 120 V~ / 220–240 V~)
* If the signal source from the HVAC system is not 12–24 V~ / 24 V-, use a separate supply to power the HVAC controller.
C
VALVE
R
C
12
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3691130a 13 10.08.19
Lutron Fan Coil Unit Controller
Wiring Diagram 6 (SMC55-MYRM only)
4-pipe System
On / Off Valves
010 V- Controlled Fan
Wiring (continued)
Continued on next page...
5
6
7
8
9
10
11
12
4 3
G
5
AO
Hot Valve In (24 V~ / 100 V~ / 120 V~ / 220–240 V~)
Common
Controller Power *
Listed Class 2, LPS, or SELV <15 W
limited energy supply
12–24 V~/24 V-
Hot Valve
G
3
G
2
G
1
R
FAN
R
VALVE
Valve
Cold Valve
Cold Valve In (24 V~ / 100 V~ / 120 V~ / 220–240 V~)
* If the signal source from the HVAC system is not 12–24 V~ / 24 V-, use a separate supply to power the HVAC controller.
Common
Fan
0–10 V-
C
VALVE
R
C
13
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3691130a 14 10.08.19
Lutron Fan Coil Unit Controller
Wiring Diagram 7 (SMC55-MYRM only)
4-pipe System
010 V- Valves
3-speed Fan
Wiring (continued)
Continued on next page...
* If the signal source from the HVAC system is not 12–24 V~ / 24 V-, use a separate supply to power the HVAC controller.
5
6
7
8
9
10
11
12
4 3
G
5
AO
Fan In (24 V~ / 100 V~ / 120 V~ / 220–240 V~)
Common
Controller Power *
Listed Class 2, LPS, or SELV <15 W
limited energy supply
12–24 V~/24 V-
Fan High
Fan Medium
Fan Low
G
3
G
2
G
1
R
FAN
R
VALVE
Valve
Common
Cold Valve
0–10 V-
Hot Valve
C
VALVE
R
C
14
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3691130a 15 10.08.19
Lutron Fan Coil Unit Controller
Wiring Diagram 8 (SMC55-MYRM only)
4-pipe System
010 V- Valves
010 V- Controlled Fan
Wiring (continued)
)Lutron, Lutron, myRoom, and Palladiom are trademarks or registered trademarks of Lutron Electronics Co., Inc. in the US and/or other countries.
All product names, logos, and brands are property of their respective owners.
5
6
7
8
9
10
11
12
4 3
G
5
AO
Common
Controller Power *
Listed Class 2, LPS, or SELV <15 W
limited energy supply
12–24 V~/24 V-
No relay output used
G
3
G
2
G
1
R
FAN
R
VALVE
Valve
* If the signal source from the HVAC system is not 12–24 V~ / 24 V-, use a separate supply to power the HVAC controller.
Common
Fan
0–10 V-
Hot Valve
Cold Valve
15