CentraLine MERLIN NX Series, RS4N, RL8N, RL2N, RS5N Installation & Commissioning Instructions

MERLIN NX Room Controller

Installation &
Commissioning
Instructions

GENERAL INFORMATION

Fig. 1. CLMERxxN (without optional covers)

(198 x 110 x 57.5

OS no.:

CLCM-…

RL4N 230 VAC 6 10 0 4 4 24 24-hr data retention

RL6N 24 VAC 6 10 0 4 4 24 24-hr data retention

mm)

RL8N 230 VAC 6 6(C 4(D 4 4 24

large housing

power

supply

AOs UIs BIs relays(A triacs(B

BEFORE INSTALLATION

IMPORTANT

It is recommended that the unit be kept at room
temperature for at least 24 hours before applying
power; this is to allow the evaporation of any
condensation resulting from low shipping / storage
temperatures.

US requirement, only: This device must be installed in
a UL-listed enclosure offering adequate space to
maintain the segregation of line voltage field wiring
and Class 2 field wiring.

Table 1. Overview of models

CAUTION

To avoid electrical shock or equipment damage, you
must switch OFF the power supply before attaching /
removing connections to/from any terminals.

total no.

of I/Os

remarks

24-hr data retention; supports switch
inputs with 24 V pull-up for connection of
standard light switches; preferred model
for light and blinds control

RS4N 230 VAC 4 4 0 4 2 14 24-hr data retention

mm)

small housing

(162 x 110 x 57.5

(A

See also section "Relay Current Limitations" on pg. 17.

(B

See also section "Triac Current Limitations" on pg. 17.

(C

Of this model's six UIs, only two UIs support NTC; this model is thus not suitable for the hardwiring of wall modules requiring

three UIs supporting NTC.

(D

This model's four binary-only inputs are labelled as UI1-UI4.

CPU: 32-bit MK24FN Freescale Kinetis Cortex M4

® U.S. Registered Trademark
Copyright © 2019 Honeywell Inc. • All Rights Reserved EN1Z-1035GE51 R0319

RS5N 24 VAC 4 4 0 4 2 14 24-hr data retention

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

A

A

AO3A

A

A

A

A

A

A

DIMENSIONS AND MOUNTING

Housings

The controller is available in two housing sizes, both
conforming to IP20:

▪ RLxN (large housing):

W x L x H = 110 x 198 x 59 mm and

▪ RSxN (small housing):

W x L x H = 110 x 162 x 59 mm

See also Fig. 2 and Fig. 3.

REMOVABLE

3.5

TERMINALS

59

53.5

52

57

C2+ GND2824V~

C2- WM130WM2

26

29

27

45

110

2N3

4

1

24V~7TN

24V0524V~624V0

L

230-V

MODELS

24-V

MODELS

Fig. 2. RLxN dimensions (in mm)

NOTE: In the case of the RL5N, all of the terminal blocks

are removable.

REMOVABLE

TERMINALS

57

198

O1

O2

O4

O5

O6

24V~46GND48UI250UI352GND54UI656UI758GND60UI10

3832

34

36

40

42

44

GND3524V~37GND3924V~41GND4324V~

31

33

8T~9

T0110TN11T0212T0313TN14T0415RC416RO417IN418RN19RN20IN121RO122IN223RO224IN325RO3

162

LED47UI149GND51UI453UI555GND57UI859UI961GND

45

C1+63C1- GND

62

64

BACnet MS/TP

SERVICE

59

59

10

10

198

IRM-RLC

(BULK PACK, 10 pcs.)

RLxNRLxN

54

Fig. 4. Large housing, with terminal protection covers,

dimensions (in mm)

162

54

IRM-RSC

(BULK PACK, 10 pcs.)

RSxNRSxN

59

54

58.32558.325

161.65

59

58.32558.325

161.65

10

WM1

WM2

3.5

59

53.5

52

24V~

O12724V~28GND

20

21

22

C2+23C2-

GND

26

25

24

45

110

1L2N3

230-V

MODELS

24V~424V05TN

24-V

MODELS

O2

O33124V~32GND

29

30

7

6T~10

T018TN9T02

UI136UI237UI339UI435GND38GND

O4

34

33

RO411IN412RN13RN14IN115RO116IN217RO218IN319RO3

C1-40C1+ GND

BACnet MS/TP

SERVICE

41

42

10

Fig. 3. RSxN dimensions (in mm)

The unit is suitable for mounting on a standard rail, on walls,
as well as in wiring cabinets or fuse boxes.

Terminal Protection Covers for IP30

In the case of controllers mounted outside of a cabinet, before
applying power to the device, Terminal Protection Covers (10­pc. bulk packs, order no.: IRM-RLC for large housings and
IRM-RSC for small housings) must be mounted so as to
provide IP30.

EN1Z-1035GE51 R0319 2

54

Fig. 5. Small housing, with terminal protection covers,

dimensions (in mm)

DIN Rail Mounting/Dismounting

MOUNTING DISMOUNTING

1.

2.

DIN EN 50022-35 x 7,5

Fig. 6. Mounting and dismounting

The unit can be mounted onto the DIN rail simply by snapping
it into place. It is dismounted by gently pulling the stirrup(s)
located at the base of the housing (see Fig. 6). When
mounted vertically on a DIN rail, the unit must be secured in
place with a stopper to prevent sliding.

1.

2.

RLxN: 2X
RSxN: 1X

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Wall Mounting/Dismounting

The unit can be mounted on floors, walls, and ceilings in any
desired orientation. (See also section "Ambient Environmental
Limits" on pg. 23 for temperature range restrictions with
floor/ceiling mounting.)

The unit is mounted by inserting optional screws
(recommended: DIN EN ISO 7049 – ST4,2x22 – C – H)
through the corresponding screwing noses.

RLxN: 187.5

RSxN: 151.5

WM1

WM2

20

21

C2+23C2-

24

1L2N3

24V~

22

GND

25

AO12724V~28GND29AO230AO33124V~32GND33AO4

26

24V~424V05TN

7

6T~10

T018TN9T02

UI136UI237UI339UI435GND38GND

34

RO411IN412RN13RN14IN115RO116IN217RO218IN319RO3

C1-40C1+ GND

BACnet MS/TP

SERVICE

41

42

99.5

DIN EN ISO 7049 – ST4,2x22 – C – H

Fig. 7. Drilling template (view from above)

After mounting the unit onto the wall, snap the appropriate
terminal protection covers (see Fig. 4 and Fig. 5 on pg. 2) into
place onto the housing by hand.

NOTE: In the case of wall-mounting, optional terminal

protection covers (in the case of the RLxN [large
housings]: IRM-RLC; in the case of the RSxN [small
housings]: IRM-RSC) must be installed in order to
comply with IP30.

The covers can be fixed into place using optional screws
(recommended: DIN EN ISO 7049 – ST2,9x9,5 – C (F) – H).
To remove a cover, place a screwdriver in the two leverage
slots (marked with arrows) and pry it loose.

TERMINAL ASSIGNMENT

General

For a complete list of all terminals and a description of their
functions, see Table 2 and Table 6.

NOTE: All terminal blocks capable of carrying either low

voltage or line voltage are orange-colored.

The delivery includes a plastic bag containing additional,
removable terminal blocks for BACnet MS/TP and Sylk
interfaces.

The controller is powered by 230 VAC, and is equipped with
differing numbers of triac outputs, relay outputs, etc. capable
of being configured in a variety of ways. See Table 1 on page

1.
Every controller features a terminal assignment label on the

top of the housing.

Power Supply Terminals

▪ Power is supplied via an orange-colored fixed screw-type

terminal block (terminals 1+2).

See also section "Power Supply" on pg. 11.

Input / Output Terminals

The controller features rows of terminal blocks on the top and
bottom.

▪ In the case of the RLxN (large housing), the controller has

double rows of analog outputs (AOs) and universal inputs
(UIs) at the top and a single row of binary outputs (BOs) –
triacs (TRs) and relay outputs (ROs) – at the bottom.

▪ In the case of the RSxN (small housing), the controller has

a single row of analog outputs (AOs) and universal inputs
(UIs) at the top and a single row of binary outputs (BOs) –
triacs (TRs) and relay outputs (ROs) – at the bottom.

NOTE: According to VDE guidelines, it is not allowed to mix

low-voltage and high-voltage signals on the relays
and triacs.

See also section "I/O Terminals" on pg. 17.

Communication Interfaces

All models of the controller feature the following communi­cation interfaces:

▪ A Sylk Bus interface (removable plug; RSxN: terminals 20

and 21; RLxN: terminals 30 and 31), for connection to
CLCMTR40x/42x Wall Modules;

▪ A BACnet MS/TP interface (removable plug; RSxN:

terminals 40, 41, and 42; RLxN: terminals 62, 63, and 64);
▪ A second RS485 interface for future use with Modbus;
▪ An RJ45 connector for connection of the BACnet WiFi

Adapter.

3 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Table 2. RSxN Room Controller: Overview of terminals and functions

term. printing function RS4N RS5N

1, 2 "L", "N" 230-V power supply X --

3, 4 "24V~", "24V0"

3, 4 "24V~", "24V0" Aux. output voltage (24 VAC) for all triacs -- X

5 "TN" Aux. term. for triac neutral wiring (internally connected with terminal 8) X X

6 "T~" Triac input voltage (24 VAC / 230 VAC) for all triacs; triac-switched X X

7 "T01" Triac-switched output X X

8 "TN" Aux. term. for triac neutral wiring (internally connected with terminal 5) X X

9 "T02" Triac-switched output X X

10, 11 "RO4", "IN4" Output of Relay 4, Input for Relay 4 type 2 type 2

12, 13 "RN", "RN" Aux. terminals for relay neutral wiring X X

14, 15 "IN1", "RO1" Input for Relay 1, Output of Relay 1 type 1 type 1

16, 17 "IN2", "RO2" Input for Relay 2, Output of Relay 2 type 1 type 1

18, 19 "IN3", "RO3" Input for Relay 3, Output of Relay 3 type 1 type 1

20, 21 "WM1", "WM2" Removable interface for Sylk Bus X X

22, 23, 24,
25

26 "AO1" Analog Output 1 type 2 type 2

27 "24V~" 24 VAC power for field devices X X

28 "GND" Ground for AOs X X

29 "AO2" Analog Output 2 type 1 type 1

30 "AO3" Analog Output 3 type 1 type 1

31 "24V~" 24 VAC power for field devices X X

32 "GND" Ground for AOs X X

33 "AO4" Analog Output 4 type 1 type 1

34 "UI1" Universal Input 1 type 1 type 1

35 "GND" Ground for UIs X X

36 "UI2" Universal Input 2 type 1 type 1

37 "UI3" Universal Input 3 type 1 type 1

38 "GND" Ground for UIs X X

39 "UI4" Universal Input 4 type 1 type 1

40, 41, 42 "C1+", "C1-", "GND" Removable BACnet MS/TP interface and corresponding GND X X

Relay output types: See Table 3. Universal input types: See Table 4. Analog output types: See Table 5.

"24V~", "C2+",
"C2-", "24V0"

type 1 (standard) type 2 (high in-rush current)

corresponding ROs of RSxN RO1, RO2, RO3 RO4

corresponding ROs of RLxN RO2, RO3 RO1, RO4

contact N.-O. N.-O.

min. load 5 VAC, 100 mA 24 VAC, 40 mA

switching voltage range 15 … 253 VAC 15 … 253 VAC

max. continuous load at 250 VAC (cos φ = 1) 4 A 10 A

max. continuous load at 250 VAC (cos φ = 0.6) 4 A 10 A

in-rush current (20 ms) -- 80 A

usage fan motor light switching and fan motor

NOTE: The max. sum load of all relay currents at the same time is 14 A.

Removable 24-V power supply input and aux. output voltage (24 VAC)
for all triacs

Aux. power (24 VAC 20%, 50/60 Hz) + RS485 Modbus interface +
corresp. GND

Table 3. Relay output types and characteristics

X --

-- --

EN1Z-1035GE51 R0319 4

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Table 4. Universal input types and characteristics

type 1 type 2 type 3

dry contact (closed: res. <10 kΩ; open: res. > 20 kΩ; max. 0.2 Hz;
pull-up voltage: 10 V)

dry contact (closed: res. <10 kΩ; open: res. > 20 kΩ; max. 0.2 Hz;
pull-up voltage: 24 V)

fast binary (=counter) input (max. 30 Hz; pulse ON = min. 16 ms; pulse
OFF = min. 16 ms; closed: voltage < 1 V; open: voltage > 5 V; pull-up
voltage: 10 V)

fast binary (=counter) input (max. 30 Hz; pulse ON = min. 16 ms; pulse
OFF = min. 16 ms; closed: voltage < 1 V; open: voltage > 5 V; pull-up
voltage: 24 V)

0(2) … 10 V X X -­NTC20kΩ

SetPoint and FanSpdSW (from CLCM1T,2T,4T,5T,6T111) X -- -­NTC10kΩ

PT1000 + Ni1000TK5000 -- X --

Table 5. Analog output types and characteristics

type 1 type 2 type 3 type 4 type 5

output voltage 0…11 V
output current 0…1 mA 0…5 mA 0…10 mA 0…20 mA -1…+1 mA
min. accuracy ±150 mV
max. ripple ±100 mV
accuracy at zero point 0…200 mV ±150 mV

UI1, UI2, UI3,

UI4, UI5, UI6

X X --

-- -- X

X X --

-- -- X

X -- --

X -- --

UI7, UI8, UI9,

UI10

UI1, UI2, UI3,

UI4 (RL8N,

only)

5 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Table 6. RLxN Room Controllers: Overview of terminals and functions (by model)

term. printing function RL4N RL6N RL8N

1, 2 "L", "N" 230-V power supply

3, 4 "24V~", "24V0" Removable 24-V power supply input

3, 4 "24V~", "24V0" Aux. output voltage (24 VAC) for all triacs

5, 6 "24V~", "24V0" Aux. output voltage (24 VAC) for all triacs

7 "TN"

8 "T~" Triac input voltage (24 VAC / 230 VAC) for all triacs; triac-switched

9 "T01" Triac-switched output

10 " TN"

11 "T02" Triac-switched output

12 "T03" Triac-switched output

13 " TN"

14 "T04" Triac-switched output

15 "RC 4" Not used.

16, 17 "RO4", "IN4" Output of Relay 4, Input for Relay 4

18 "RN" Aux. terminal for relay neutral wiring

19 "RN" Aux. terminal for relay neutral wiring

20, 21 "IN1", "RO1" Input for Relay 1, Output of Relay 1

22, 23 "IN2", "RO2" Input for Relay 2, Output of Relay 2

24, 25 "IN3", "RO3" Input for Relay 3, Output of Relay 3

26, 27, 28, 29 "C2+", "C2-", "24V0", "24V~" Not used.

30, 31 "WM1", "WM2" Removable interface f or Sylk Bus

32 "AO1" Analog Output 1

33 "GND" Ground for AOs

34 "AO2" Analog Output 2

35 "24 V~" 24 VAC power for fiel d devices

36 "AO3" Analog Output 3

37 "GND" Ground for AOs

38 "AO4" Analog Output 4

39 "24 V~" 24 VAC power for fiel d devices

40 "AO5" Analog Output 5

41 "GND" Ground for AOs

42 "AO6" Analog Output 6

43 "24 V~" 24 VAC power for fiel d devices

44 "24 V~" 24 VAC power for fiel d devices

45 "LED" Output to LED of CLCM4T,5T,6T111

46 "GND" Ground for UIs

47 "UI1" Universal Input 1

48 "UI2" Universal Input 2

49 "GND" Ground for UIs

50 "UI3" Universal Input 3

51 "UI4" Universal Input 4

52 "GND" Ground for UIs

53 "UI5" Universal Input 5

54 "UI6" Universal Input 6

55 "GND" Ground for UIs

56 "UI7" Universal Input 7

57 "UI8" Universal Input 8

58 "GND" Ground for UIs

59 "UI9" Universal Input 9

60 "UI10" Universal Input 10

61 "GND" Ground for UIs

62, 63, 64 "C1+", "C1-", "GND" Removable BACnet MS/TP interface and corresponding GND

Aux. terminal for triac neutral wiring (internally connected with terminals 10
+ 13)

Aux. terminal for triac neutral wiring (internally connected with terminals 7
+ 13)

Aux. terminal for triac neutral wiring (internally connected with terminals 7
+ 10)

Relay output types: See Table 3. Universal input types: See Table 4. Analog output types: See Table 5.

X -- X

-- -- --

-- X --

X X X

X X X

X X X

X X X

X X X

X X X

X X X

X X X

X X X

-- -- --

type 2 type 2 type 2

X X X

X X X

type 2 type 2 type 2

type 1 type 1 type 1

type 1 type 1 type 1

-- -- --

X X X

type 3 type 3 type 4

X X X

type 3 type 3 type 3

X X X

-- type 1 type 5

-- X X

-- type 1 type 5

-- X X

-- type 1 type 1

-- X X

-- type 1 type 1

-- X X

X -- X

X -- X

X X X

type 1 type 1 type 3 (BI)

type 1 type 1 type 3 (BI)

X X X

type 1 type 1 type 3 (BI)

type 1 type 1 type 3 (BI)

X X X

type 1 type 1 type 1

type 1 type 1 type 1

X X X

-- type 2 type 2

-- type 2 type 2

-- X X

-- type 2 type 2

-- type 2 type 2

-- X X

X X X

EN1Z-1035GE51 R0319 6

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

*OPTIONAL FUSE (TO PROTECT CONTROLLER‘S INTERNAL
TRANSFORMER, WHICH HAS ONLY A NON-RESETTABLE FUSE).

CLCMTR40x/TR42x

WAL L MOD ULE

22

20

WM121WM2

1L2

PROP.

PROP.

COOL

HEAT

°C

27

26

AO1

24V~

N

3

24V~424V0

28

24V0

29

AO230AO3

NL

31

24V~

5TN6

T~

N TIN RIN NN FIN

230 V

F1*

Fig. 8. RS4N example wiring (230-V model)

24V~

PROP.

0...10V

CLCMTR40x/TR42x

WALL MODULE

22

°C

GND

DAMPER

ACTUATOR

7

T01

THERM.

COOL

32

GND

8TN9

33

AO4

T02

THERM.

HEAT

34

35

UI1

GND

ELECTR.

REHEATER

UI237UI3

CLCM2T WALL MODULE

1

TEMP2SETP

OCCUPANCY CONTACT

36

10

RO4

38

GND

11

IN412RN13RN14IN1

L L

N N

LINE VOLTAGE

3

COM

OCCUPANCY CONTACT

workbench

39

UI4

15

RO1

Niagara

workbench

Niagara

16

IN2

3-SPEED

FAN

BACnet MS/TP

40

C1+41C1-42GND

17

RO218IN319RO3

242 5 26 27 28 29 30 31 3 2

END

BIAS

MID

RS232

RS485-1

485-1+

GND1

J1 J8

EAGLEHAWK NX

24V~

24V-0

1

2

BACnet WiFi

n.a.

n.a.

n.a.

485-1-

485-2-

485-2+

GND2

ADAPTER

87 6543 21

RJ45 INTERFACE

7 8

RJ45
PLUG

2,3,
5,6

4

20

WM121WM2

1L2

26

AO1

3

N

24V~424V0

24V~

28

27

GND

29

AO2

30

AO3

5

TN

NL

24V~

6

T~

32

31

GND

AO4

7

9

8

T01

T02

TN

THERM.

THERM.

COOL

HEAT

34

33

UI1

35

GND

ELECTR.

REHEATER

36

UI237UI3

10

RO4

IN4

39

38

UI4

GND

11

12RN13

15

14

RO1

IN1

RN

16

RO218IN319RO3

IN2

3-SPEED

FAN

40

C1+41C1-42GND

17

87 6543

21

RJ45 INTERFACE

2,3,
5,6

7 8

4

230 V

F1

BACnet MS/TP

24V~24V0

N L

LINE VOLTAGE

Fig. 9. RS4N example wiring (230-V model) (with actuator powered by extra transformer)

7 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

CLCM2T WALL MODULE

CLCMTR40x/TR42x

WALL MODULE

22

°C

PROP.
COOL

PROP.

HEAT

1

TEMP2SETP

COM

3

Niagara

workbench

OCCUPANCY CONTACT

1

2526272829 30 31 32

24

END

BIAS

MID

RS232

RS485-1

n.a.

n.a.

n.a.

485-1-

485-2-

485-1+

485-2+

GND1

GND2

J1 J8

EAGLEHAWK NX

24V~

24V-0

2

20

WM121WM2

26

27

AO1

24V~

3

4

24V~

24V0

L

N

LI NE VOLTA GE

28

GND

29

AO230AO3

5

TN

N TIN

24V~

6

T~

32

GND

7

THERM.

COOL

33

AO4

9

8

T02

TN

THERM.

HEAT

31

T01

F1

UI1

34

35

GND

ELECTR.

REHEATER

36

UI237UI3

10

11

RO4

IN4

RIN NN FIN

38

GND

12RN13

RN

UI4

IN1

39

15

14

RO1

3-SPEED

17

16

RO218IN319RO3

IN2

FAN

40

C1+41C1-42GND

87 65 43 2 1

RJ45 INTERFACE

2,3,
5,6

7 8

4

N NL L

LINE VOLTAGE

Fig. 10. RS5N example wiring (24-V model)

2425 26 2728 29 30 31 32

END

BIAS

MID

RS232

RS485-1

n.a.

n.a.

n.a.

485-1-

485-2-

485-1+

485-2+

GND1

BACnet MS/TP

GND2

J1 J8

EAGLEHAWK NX

24V~

24V-0

1

2

BACnet MS/TP

40

C1+41C1-42GND

87 6543

21

RJ45 INTERFACE

2,3,
5,6

7 8

4

CLCMTR40x/TR42x

WALL MOD ULE

22

°C

20

WM121WM2

26

AO1

24V~

GND

PROPORT.

DAMPER

ACTUATOR

27

GND

24V~

28

0...10V

29

AO230AO3

31

24V~

32

GND

CLCM2T WALL MODULE

1

TEMP2SETP

34

33

AO4

UI1

35

GND

3

COM

OCCUPANCY CONTACT

36

UI237UI3

Niagara

workbench

39

38

UI4

GND

3

24V~

24V0

4

NL

7

5

6

8TN9

T01

TN

T~

THERM.

COOL

T02

THERM.

HEAT

LI NE V OLTAG E

F1

24V0

24V~

N L

LINE VOLTAGE

Fig. 11. RS5N example wiring (24-V model) (with actuator powered by extra transformer)

EN1Z-1035GE51 R0319 8

ELECTR.

REHEATER

10

RO411IN4

14

12RN13

IN115RO116IN217RO218IN319RO3

RN

3-SPEED

FAN

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

*OPTIONAL FUSE (TO PROTECT CONTROLLER‘S INTERNAL
TRANSFORMER, WHICH HAS ONLY A NON-RESETTABLE FUSE).

CLCMTR40x/TR42x

WAL L MOD ULE

22

30

WM131WM2

1L2

230 V

PROP.

PROP.

COOL

°C

N

NL

HEAT

32

34

AO1

AO236AO338AO440AO542AO6

35

24V~

5

24V~624V0

OUTPUT

37

GND

24VAC

33

GND

39

41

GND

24V~

7

8T~9

TN

N TIN RIN NN FIN

F1*

Fig. 12. RL4N (230-V model) example wiring

24V~

CLCMTR40x/TR42x

WALL MODULE

22

°C

30

WM131WM2

PROPORT.

DAMPER

GND

ACTUATOR

32

34

AO1

AO236AO338AO440AO542AO6

33

GND

35

24V~

37

GND

0...10V

39

24V~

CLCM4T,5T,6T111 WALL MODULE

1

2

3

4

BYP

5

LED

ELECTR.

REHEATER

43

24V~

T01

THERM.

HEAT

41

GND

COM

44

24V~

10TN11

T0212T03

LED

SETP

TEMP

46

GND48UI250UI352GND54UI656UI758GND60UI10

47

45

UI149GND51UI453UI5

13TN14

T04

FLOATING

COOL

CLCM4T,5T,6T111 WALL MODULE

1

2

TEMP3SETP4BYP

COM

44

46

GND48UI250UI352GND54UI656UI758GND60UI10

24V~

43

24V~

47

45

UI149GND51UI453UI5

LED

7

6

NC

NC

Pt1000

55

GND57UI8

16

17

RO4

18RN19RN20

IN4

L L

N N

LINE VOLTAGE

6NC7

LED

5

NC

55

GND57UI8

Niagara

workbench

OCC. CONTACT

59

UI961GND

IN1

OCC. CONTACT

Pt1000

59

UI961GND

21

22

RO1

IN2

Niagara

workbench

BACnet WiFi

BACnet MS/TP

62

C1+63C1-64GND

23

RO224IN325RO3

3-SPEED

FAN

BACnet MS/TP

62

C1+63C1-64GND

ADAPTER

RJ45
PLUG

87 6543 21

RJ45 INTERFACE

7 8

BACnet WiFi

ADAPTER

RJ45 INTERFACE

7 8

RJ45
PLUG

87 6543

2,3,
5,6

4

21

2,3,
5,6

4

1L2

N

NL

5

24V~624V0

7

9

T01

THERM.

HEAT

10
TN

11

T0212T03

8

TN

T~

13

TN

FLOATING

COOL

T04

14

ELECTR.

REHEATER

16

RO4

IN4

21

18RN19

20

IN1

RN

17

RO1

23

22

RO224IN325RO3

IN2

3-SPEED

FAN

230 V

F1

24V~24V0

N L

LINE VOLTAGE

Fig. 13. RL4N (230-V model) example wiring (with actuator powered by extra transformer)

9 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

CLCMTR40x/TR42x

WALL MODULE

22

°C

30

WM131WM2

1L2

N

NL

230 V

CLCMTR40x/TR42x

WALL MODULE

22

°C

30

WM131WM2

PROP.

PROP.

COOL

HEAT

32

34

AO1

AO236AO338AO440AO542AO6

35

33

GND

PROP.

PROP.

COOL

HEAT

32

34

AO1

AO236AO338AO440AO542AO6

33

GND

24V~

24V~624V0

35

24V~

5

37

GND

37

GND

CLCM4T,5T,6T111 WALL MODULE

6NC7

1

2

TEMP3SETP4BYP

COM

46

GND48UI250UI352GND54UI656UI758GND60UI10

39

24V~

43

41

GND

24V~

7

9

8

TN

N TIN RIN NN FIN

10

T01

T~

TN

THERM.

HEAT

47

UI149GND51UI453UI5

11

T0212T03

13
TN

FLOATING

COOL

14

T04

F1

5

LED

ELECTR.

REHEATER

NC

55

GND57UI8

16

17

RO4

IN4

LINE VOLTAGE

Fig. 14. RL4N (230-V model) example wiring

CLCM4T,5T,6T111 WALL MODULE

6NC7

LED

5

NC

55

GND57UI8

39

24V~

41

GND

43

24V~

1

2

TEMP3SETP4BYP

COM

46

GND48UI250UI352GND54UI656UI758GND60UI10

47

UI149GND51UI453UI5

Pt1000

18RN19

RN

N NL L

Pt1000

Niagara

workbench

OCC. CONTACT

59

UI961GND

21

20

22

RO1

IN1

IN2

Niagara

workbench

OCC. CONTACT

59

UI961GND

BACnet WiFi

BACnet MS/TP

62

C1+63C1-64GND

23

RO224IN325RO3

3-SPEED

FAN

BACnet WiFi

BACnet MS/TP

62

C1+63C1-64GND

ADAPTER

87 65 43 2 1

RJ45 INTERFACE

7 8

ADAPTER

87 65 43 2 1

RJ45 INTERFACE

7 8

RJ45

PLUG

RJ45

PLUG

2,3,
5,6

4

2,3,
5,6

4

5

4

3

24V0

24V~

NL

LI NE VOLTA GE

24V~

6

7

9

T01

THERM.

HEAT

10

TN

11

T0212T03

13
TN

FLOATING

COOL

8

TN

24V0

T~

N TIN RIN NN FIN

F1

Fig. 15. RL6N (24-V model) example wiring

EN1Z-1035GE51 R0319 10

14

T04

ELECTR.

REHEATER

16

17

IN4

18RN19

RN

N NL L

RO4

LINE VOLTAGE

IN1

21

RO1

23

22

RO224IN325RO3

IN2

3-SPEED

FAN

20

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

POWER SUPPLY

General Information

CAUTION

To prevent a risk of injury due to electrical shock
and/or damage to device due to short-circuiting, low­voltage and high-voltage lines must be kept physically
separate from one another.
Further, to prevent a risk of short-circuiting and
damage to your unit, do not reverse the polarity of the
power connection cables, and avoid ground loops
(i.e., avoid connecting one field device to several
controllers).

NOTE: All wiring must comply with applicable electrical

NOTE: To comply with CE requirements, devices having a

Wiring

230-VAC Models

The 230-VAC models are powered via an orange fixed screw­type terminal block (terminals 1+2). See also Fig. 16. These
terminals support 1 x 4 mm

24-VAC Terminals for Auxiliary or Field Devices

All 24-VAC auxiliary power supply terminals support 1 x 2.5
mm

24-VAC Models

The 24-VAC models are powered via a black removable
terminal plug (terminals 3+4), thus allowing daisy chain wiring

codes and ordinances. Refer to job or manu­facturers’ drawings for details. Local wiring guide­lines (e.g., IEC 364-6-61 or VDE 0100) may take
precedence over recommendations provided in
these installation instructions.

voltage of 50...1000 VAC or 75...1500 Vdc but
lacking a supply cord, plug, or other means for
disconnecting from the power supply must have the
means of disconnection (with a contact separation of
at least 3 mm at all poles) incorporated in the fixed
wiring.

2

or 2 x 2.5 mm2 wiring.

230-VAC MODEL #1 230-VAC MODEL #2

1

2

L

N

230 VAC

(-15% / +10%),

50 / 60 Hz

1

2

L

N

NL

Fig. 16. Multiple 230-VAC models connected to single

power supply

2

or 2 x 1.5 mm2 wiring.

of the power supply. See also Fig. 17. These terminals
support 1 x 2.5 mm

24-VAC MODEL #1 24-VAC MODEL #2

3

24V~

24 VAC

(+/-20%)

2

or 2 x 1.5 mm2 wiring.

4

24V0

120 VAC

230 VAC

(-15% / +10%),

50 / 60 Hz

or

3

24V0

24V~

CAUTION

!

ALWAYS CONN ECT TERM. 4
(24VAC0) OF EVERY 24-VAC
MODEL TO TERM.
OF EVERY OTHER 24-VAC

.

MODEL
FAILURE TO COMPLY WILL
RESULT IN SHORT-CIRCUITING!

4

4 (24VAC0)

NL

Fig. 17. Multiple 24-VAC models connected to single

power supply

Communication / Signal Terminals

All other (i.e.: communication / signal) terminals (except for
the Sylk Bus – see Table 12) support 1 x 2.5 mm

2

mm

wiring. Two wires with a total thickness of 2.5 mm2
(14 AWG) can be twisted together and connected using a
wire nut (include a pigtail with this wire group and attach the
pigtail to the individual terminal block). Deviations from this
rule can result in improper electrical contact. Local wiring
codes may take precedence over this recommendation.

2

or 2 x 1.5

Electrical Data

RL2N, RL8N, RS4N (230 VAC)

Power via terminals 1 + 2: 230 VAC +10% / -15%, 50/60 Hz.
Max. power consumption (when unloaded): 8 W.
Max. power consumption (when loaded): 18 W.
The controller is "unloaded" when it has no external load.

Thus, the only load on the controller is the inherent load (8 W)
of the electronics, themselves. The heat dissipation then
amounts to 8 W. The controller is "loaded" when – besides
the inherent load – an additional sum load resulting from max.
300 mA (irrespective as to whether it is supplied by the con­troller's internal transformer or by an external source) is
applied to the 24 VAC output terminals. The max. unloaded
output voltage at terminals 3 and 4 (RSxN) or terminals 5 and
6 (RLxN), respectively, is 33 VAC (typically: 29.5 VAC).

RL6N, RS5N (24 VAC)

Power via terminals 3+4: 24 VAC 20%, 50/60 Hz.
Max. current consumption (when unloaded): 300 mA.
Max. current consumption (when loaded): 900 mA.
The controller is "loaded" when – besides the inherent load

(300 mA) – an additional sum load resulting from max. 600
mA is applied to the 24 VAC output terminals. The max.
unloaded output voltage at terminals 3 and 4 (RSxN) or
terminals 5 and 6 (RLxN) is identical with the output voltage of
the external supplying transformer.

11 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

FREELY PROGRAMMABLE
APPLICATIONS

All models can be used with freely programmable appli­cations. The application engineer performs this task on a PC
on which Niagara has been installed (see also corresponding
Technical Literature listed in Table 15 on pg. 23).

Supported Actuators

The application supports a variety of actuators.

• Analog 0(2)…10 V

• Floating

• PWM

• Staged actuators

• 6-way valve actuators

Supported Sensors

A variety of sensors (e.g., room temperature sensors, supply
temperature sensors, condensation switch, window sensors,
occupancy sensors, card readers, etc.) may be used to
optimize control quality.

Applications

Applications requiring a fast (20 ms) reaction time can be
implemented as event-based applications.

Blinds Function Block

The sunblinds may be used to control different devices:

• Blinds: Height and slat angle.

• Shutter: Height.

• Motorized drapes: Horizontal position of drape.

• Motorized windows: Window position.

Blinds

CurrentPosition

CurrentAngle

MovementStatus

Cause

EmergencyCmd

EmergencyPosition
EmergencyAngle
Cause

ManualOverrideCmd

ManualOverridePosition
ManualOverrideAngle

ApplicationCmd

ApplicationPosition
ApplicationAngle
ApplicationCause

Other useful inputs for special cases

Device Type, Hw Terminals, Runtimes,

Fig. 18. Blinds function block

(highest prio)

(lowest prio)

--Parameters--

SlatSteps, LockTime, ...

M

Last wins

with wired

push buttons

Manual Blinds Positioning

The blinds can be positioned manually using directly-wired
pushbutton inputs or by manual override commands con­nected as input to the function block as programmed in the
Niagara wire sheet (e.g., manual commands received via
BACnet MS/TP). In the event of a conflict, i.e., when com­mands are issued both by pushbutton and via BACnet
MS/TP, the last command received has priority and will thus
position the blinds.

Manual Blinds Positioning by Pushbutton

• Short press UP: Opens the slat angle by a configurable
slat angle segment.

• Long press UP: Drives the blinds to the UP position.
Movement may be stopped by briefly pressing any blinds
pushbutton.

• Short press DOWN: Closes the slat angle by a con­figurable slat angle segment.

• Long press DOWN: Drives the blinds to the DOWN posi­tion. Movement may be stopped by briefly pressing any
blinds pushbutton.

• Example:

- Configuration: Slat angle fully open = 80°, slat angle

fully closed = -80°, 4 slat angle steps (move the blinds
by 40° per step)

- The slat angle is in the fully open position. The room

occupant positions the slats horizontally with two short
press signals. This is far more accurate than watching
the slats and releasing the pushbutton once the slats
appear to have reached the proper angle.

Application Commands

Energy optimization per EN15232 or special behavior of the
blinds can be achieved via the application input. The appli­cation engineer can create customer-specific applications to
drive the blinds to the optimal position based on daylight level,
occupancy, heat/cool demand in the room, etc. The appli­cation engineer may, e.g., create an application which drives
the blinds DOWN if the sun shines into the room and there is
a cooling demand for the room.

Application commands may be used by the supervisory
station or the primary plant controller to, e.g., drive all of the
blinds UP during the night.

The application engineer can program scenes for light, blinds,
and HVAC.

NOTE: The application engineer has the option of blocking

application commands for a configurable time after
the blinds have been manually set.

Emergency Command

The blinds function block has an emergency input which has
the highest priority. Application commands and manual
commands are blocked in case of an emergency command.
The emergency input is used, e.g., in case of strong wind,
fire, open window, or during window cleaning to block the
blinds, e.g., in the upper position.

Feedback Information from the Blinds Function Block

The blinds provide a feedback for the position of the blind. In
addition, they provide a cause for the actual position. The

EN1Z-1035GE51 R0319 12

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

"cause" information is of considerable assistance to the
application engineer in clearly understanding the cause for
the blinds' position (e.g., movement stopped due to open
window).

Commissioning Parameters

• Device type, e.g. blinds, shutter, drape…

• Time to open the blinds.

• Time to close the blinds.

• Slat angle fully open.

• Slat angle fully closed.

• Slat time to close.

• Slat time to open.

• Slat angle position steps.

• Lock time after manual command.

• Assignment of two outputs (relay or triac) per set of blinds.
It is recommended to use coupling relays in case triac
outputs are used for sunblinds positioning.

• Assignment of two inputs per set of blinds for pushbutton
UP/DOWN connection.

Time Delays for Motor Protection

• Direction change: 600 msec pause.

• Same direction: 300 msec pause for reactivation of the
motor.

• Minimum switch-on time: 50 msec.

General Remark regarding Parallel Positioning of Blinds for a
Building Facade

The position of the blinds is calculated based on runtimes for
UP/DOWN and slat angle open/close. There is no position
sensor and the runtimes may change over time as the blinds
become dirty, etc. It is therefore not possible to exactly
position all blinds at the same height and slat angle.

Hardware Recommendation

The RL8N is the preferred hardware model for light and blinds
control. Special features of RL8N:

• Dimming of lights via 1…10V output requires that the
analog output be able to operate as a current sink
(-/+ 1mA on AO3 and AO4).

• High inrush current (80A inrush current and 10 A con­tinuous current on relay 1 and 4) for capacitive loads like
LED lighting.

• Increased reliability for dry inputs (24V pull-up voltage for
UI1 …4).

Light Function Block

The light function block supports different types of lights:

• ON/OFF light.

• Light dimming.

• Light ON/OFF with timer.

• Light ON/OFF with timer with dimming function.

• Stair case lighting.

• Pushbutton used to switch ON a light. A timer is started
and the light is switched OFF once the configurable time
is over.

• Staircase lighting with dimming function.

Light

OutManualAddressedCmdBits

EmergencyCmd

EmergencyCause

MotionBrightnessSensor

- Light ON if Occ and Dark

- Light ON and restart AutoOffTimer if Occ a nd Dark

- Light OFF if Unocc or Bright

- If Occ, do not switch OFF even if AutoOffTimer has
expired

- If Occ, ignore ApplicationCmd to switch OFF
(i.e., do not switch OFF at 7:00 p.m.)

ManualOverrideCmd

ManualAddressedCmdBits

Last wins with wired push buttons

ApplicationCmd

ApplicationCause

Other useful inputs for special cases

MaxOutputs, DimmingSpeed, LockTime, ...

--Parameters--

LightControlType, Hw Terminals, Min/

1 x BI 2 x BI

Fig. 19. Light function block

Manual Light ON / OFF / Dim

The light can be switched ON/OFF or dimmed manually using
directly-wired pushbutton inputs or by manual override com­mands connected as input to the function block as
programmed in the Niagara wire sheet (e.g., manual com­mands received via BACnet MS/TP). In the event of a conflict,
i.e., when commands are issued both by pushbutton and via
BACnet MS/TP, the last command received has priority and
will thus set the light.

Manual Light ON / OFF / Dim by Pushbutton

• The light can be controlled using one or two pushbuttons.

• Control using two pushbuttons:

- Short press UP: Light is switched ON.

- Long press UP: Light intensity is increased. Releasing
the pushbutton stops the brightness change.

- Short press DOWN: Light is switched OFF.

- Long press DOWN: Light intensity is decreased.
Releasing the pushbutton stops the brightness
change.

• Control using one pushbutton:

- Short press: Toggles the light ON/OFF.

- Long press: Starts the dimming process. Increasing /
decreasing the light level is toggled with every push­button press. Releasing the pushbutton stops the
brightness change.
Example: The light level is being increased by means
of a long press. If you now instead wish to decrease
the light level, release the pushbutton and perform
another long press.

- It is possible to configure the pushbutton such that
only light ON / light increase or light OFF / light
decrease using the pushbutton is supported. Switching

OutFeedback

(highest prio)

Last wins with

wired push buttons

(lowest prio)

1 x BO - 1 x AO

OutCause

RAM

RAM

13 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

OFF can be done automatically with a configurable
delay.

Application Commands

Energy optimization per EN15232 or special behavior of the
light can be achieved via the application input. The application
engineer can create customer-specific applications to, e.g.,
switch the light OFF if the daylight level reaches a con­figurable level.

The application engineer can program scenes for light, blinds,
and HVAC.

Application commands may be used by the supervisory
station or the primary plant controller to, e.g., switch OFF all
lights during the night.

NOTE: The application engineer has the option of blocking

application commands for a configurable time after
the light has been manually set.

Manual Address Command Bit Input

This input is used if the light is controlled by a manual
command coming from another light function block. This
functionality is used for grouping, e.g., using one pushbutton
to switch ON/OFF all lights in a room.

Motion and/or Brightness Sensor

This input is used to connect a motion detector including a
brightness sensor.

The input can be configured for:

• Light ON if occupancy detected on dark.

• Light ON and AutoOffTimer restarted if occupancy
detected and the room is dark.

• Light OFF if the room is unoccupied or the room is bright.

• Do not switch the light OFF if the automatic OFF timer has
expired and occupancy is detected.

• Do not switch the light OFF if the application wants to
switch the light OFF but the room is still occupied.

Emergency Command

The light function block has an emergency input which has
the highest priority. Application commands and manual
commands are blocked in case of an emergency command.
The emergency input is used, e.g., in case of fire to switch
ON all lights permanently or it can be used to switch OFF
certain light groups in case the building is running in
generator mode.

Feedback Information from the Light Function Block

The light provides a feedback for the light level. In addition, it
provides a cause for the actual light level. The "cause"
information is of considerable assistance to the application
engineer in clearly understanding the cause for the light level
(e.g., light switched ON due to emergency or for lamp test).

The light function block can be configured to command other
light function blocks. This is used for grouping of lights.

Commissioning Parameters

• Light type, e.g. ON/OFF, dimming, staircase, etc.

• Assignment of switching outputs (relay or triac). It is
recommended to use coupling relays if triac outputs are

used for lighting. Please observe the relays' constant
current and inrush current limitations. Coupling relays may
be used if the internal relays cannot support the required
current.

• Assignment of analog outputs for light dimming via
1…10V.
NOTE: Only AO3 and AO4 of the RL8N support dimming.

• Assignment of inputs for pushbutton connection and one
or two pushbutton control.

• Min/max level and speed for dimming.

• Auto OFF time delay.

• Optional switch OFF delay time in case of automatic OFF.
The light blinks to inform the room occupant that the light
will be switched OFF. The room occupant may manually
switch ON the light in this case to avoid automatic
switching OFF of the light.

Hardware Recommendation

The RL8N is the preferred hardware model for light and blinds
control. Special features of the RL8N:

 Dimming of lights via 1…10V output requires that the

analog output can operate as a current sink (-/+ 1mA
on AO3 and AO4).

 High inrush current (80A inrush current and 10 A

continuous current on relay 1 and 4) for capacitive
loads like LED lighting

 Increased reliability for dry inputs (24V pull-up

voltage for UI1 …4)

Wiring Example for Lights and Blinds

32

34

AO1

AO236AO338AO440AO542AO6

33

GND

24V~

39

35

37

GND

24V~

LIGHT DIM

GND

43

41

24V~

16

RO417IN418RN19RN20IN121RO122IN223RO224IN325RO3

LIGHT ON/OFFLIGHT GND

NL

LINE VOLTAGE

BLINDS UP

BLINDS NEUTRAL

BLINDS DOWNLIGHT NEUTRAL

SUNBLINDS

Fig. 20. Wiring example for lights and blinds (RL8N)

COMMISSIONING

Automatic MAC Addressing

In contrast to other MS/TP controllers, the RxxN Controller
features automatic MAC addressing.

The MAC addresses which the individual RxxN controllers on
the BACnet MS/TP bus assign to themselves are not
assigned in sequential order.

They assign those numbers (MAC ID) between 1…62
currently not in use by another device on the BACnet MS/TP
bus. All RxxN controllers are BACnet MS/TP masters. Every
master performs periodic polling for the possible appearance
of new masters. Each master "knows" the identity of the
"next" master (i.e., that RxxN controller with the next-highest
MAC ID) on the BACnet MS/TP bus and to which it must
therefore pass the token. The polling process includes a
search for new masters which might have MAC addresses
lying between its own MAC address and that of the "next"
master. The value of the property Max Master specifies the
highest-allowable address for master nodes. Max Master is

EN1Z-1035GE51 R0319 14

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

set to 35 by default, thus guaranteeing that, on a BACnet
MS/TP bus with, e.g., 62 RxxN controllers, all of the other
RxxN controllers will be found. Both the property Max Master
and the property MAC ID are writeable properties that can be
changed. Specifically: "MAC ID" can be changed using
Niagara, while "Max Master" can be changed using Niagara
or any other BACnet-compatible engineering tools, e.g., with
BACShark.

NOTE: It is not possible to configure a MAC ID outside the

range of 1…62.

BACnet MS/TP

PLANT

CONTROLLER

LEGEND:

NON-RxxN CONTROLLER (WITH MANUAL MAC ADDRESSING)

RxxN (WITH AUTOMATIC MAC ADDRESSING)

#1 #2 #60 #62 #61

Fig. 21. Automatic MAC addressing (scenario "A")

In scenario "A", 29 controllers with manually-assigned MAC
addresses (#1, #2, #3…#59, #60, #62 – MAC address #61
has thus been deliberately skipped) are already up and
running on the BACnet MS/TP bus. A single additional RxxN
is then connected to the bus and powered on.

RESULT: The RxxN Controller requires approx. 28-31 sec to
automatically assign itself a compatible MAC address (#61),
and to complete various other firmware tasks before
becoming fully operational.

Scenario "A" and additional scenarios ("B" through "F") are
described in Table 7 below.

Table 7. Possible Auto MAC addressing scenarios

scenario time remarks

A: RxxN start-up time on
single BACnet MS/TP bus
after power-on (cold boot or
reset).

B: Average start-up time for
all RxxN controllers on single
BACnet MS/TP bus.

C: Time to recognize con­flicting MAC address of added
non-RxxN controller.

D: Time to recognize con­flicting MAC address of added
non-RxxN controller while
auto MAC still in progress.

E: Time for auto MAC when
additional RxxN controllers
are added in stages while
auto MAC still in progress.

F: Time for restart of RxxN
controllers and verification of
auto MAC addresses after
power-down.

28-31
sec

1 min.
and 34
sec

21 sec

50 sec

30 sec

17 sec

61 non-RxxN controllers
(with manual MAC
addressing) are running; 1
RxxN is then added and
powered on.

Like "A," but with 8 non­RxxN controllers; 54 RxxN
controllers are then added
and booted.

Like "B," but with 7 non­RxxN controllers and 54
RxxN controllers; an
additional non-RxxN con­troller with a conflicting
address is then added.

Like "C," but with the addi­tional non-RxxN controller
having a conflicting MAC
address added while auto
MAC still in progress.

Like "B," but with RxxN con­trollers added in stages.

8 non-RxxN controllers and
54 RxxN controllers are
running; then power-down
and restart.

OPERATOR INTERFACES

LEDs

The controller features the following LEDs:

T2 R2 T1 R1

Fig. 22. Controller LEDs

Table 8. Description of LED behaviors

symbol color function, description

T2 yellow Not used

R2 yellow Not used

T1 yellow

R1 yellow

!

yellow

green

LED indicating transmission of communication
signals via the BACnet MS/TP interface.

LED indicating reception of communication
signals via the BACnet MS/TP interface.

Status LED indicating firmware problems,
hardware problems, etc. (see Table 9).

Power LED indicating firmware problems,
hardware problems, etc. (see Table 9).

Table 9. Status LED and power LED behaviors

# Mode Power LED (green)

1 Power failure Stays OFF Stays OFF

2 Device error* Stays ON Stays ON

3 No application ON/OFF (0.5 Hz) ON/OFF (0.25 Hz)

4 Broken sensor ON/OFF (0.25 Hz) Stays ON

5 Short-circuiting ON/OFF (0.5 Hz) Stays ON

6 Auto-MAC ON/OFF (1 Hz) ON/OFF (0.5 Hz)

Unacknowledged

8

alarm

9 Normal operation ON/OFF (0.5 Hz) Stays OFF

ON/OFF (2 Hz) ON/OFF (2 Hz)

*Please return the controller for repair.

Service Button

The Service Button is used to trigger dedicated events.

Table 10. Use of controller's Service Button

action result

Button pressed 0.01 to 2 sec.
while controller running

Button pressed > 10 sec. while
controller powering up

Button pressed 0.01 to 5 sec.
while controller powering up

!

Status LED

(yellow)

Service Pin (UID) broadcast on
the BACnet MS/TP bus.

Password is reset.

Auto MAC addressing procedure
reinitiated.

15 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

A

COMMUNICATION INTERFACES

BACnet MS/TP Interface

The controller features an RS485 interface (RLxN: terminals
62, 63, and 64; RSxN: terminals 40, 41, and 42) suitable for
BACnet MS/TP communication. The terminal block containing
it is black. The cable length affects the baud rate. See Table

11.

Table 11. Baud rate vs. max. cable length

baud rate max. cable length (L)

9.6, 19.2, 38.4, 57.6, and 76.8 kbps 1200 m

115.2 kbps 800 m

For information on wire gauge, max. permissible cable length,
possible shielding and grounding requirements, and the max.
number of devices which can be connected to a bus, refer to
standard EIA-485.

Connecting to BACnet MS/TP Buses

The controller communicates via its BACnet MS/TP interface
with other BACnet MS/TP-capable devices (e.g., other room
controllers or plant controllers like the EAGLE / Excel Web II).
In doing so, the following considerations should be taken into
account.

▪ Max. BACnet MS/TP bus length (L): See Table 11.
▪ Twisted-pair cable, e.g.:

- AWG 18;

- J-Y-(St)-Y 2 x 2 x 0,8;

- CAT 5,6,7 cable – use only one single pair for one
bus;

- Belden 9842 or 9842NH);

and daisy-chain topology.
▪ Must conform to EIA-RS485 cabling guidelines and

ANSI/ASHRAE Standard 135-2010.

▪ Max. no. of BACnet MS/TP devices (including the Master)

per BACnet MS/TP channel: 31 (= "N" in Fig. 23).

L

NOTE 1

25 26 62 63 64

24

END

BI

MID

S

EAGLE / Excel Web II

PLANT CONTROLLER

BACnet MS/TP

DEVICE #1 (MASTER)

40

END

C1+

CLME-RSxN CLME-RLxN

BACnet MS/TP

DEVICE #2

41 42

C1-

GND

C1-

C1+

BACnet MS/TP

DEVICE #3

GND

RS485 -

RS485 +

BACnet MS/TP

DEVICE #4

GND

Fig. 23. Connection to a BACnet MS/TP Bus

NOTE 1: If any of the devices are electrically isolated, it is

recommended that those devices be connected to
signal ground.

NOTE 2: The 120-Ohm termination resistor must be inserted

directly into the terminals of the final BACnet MS/TP
device.

TWISTED
PAIR

120Ω

RS485 -

RS485 +

BACnet MS/TP

DEVICE #N

GND

NOTE 3: If shielding is used, the shielding of each individual

bus segment should be separately connected at one
end to earth.

RJ45 Connector for BACnet WiFi Adapter

A BACnet WiFi Adapter can be connected to the controller's
RJ45 connector in order to establish wireless communication
with a PC with Niagara so that the application engineer can
commission the controller.

NOTE: When the BACnet WiFi Adapter is connected to the

controller's RJ45 connection, it is powered by the
controller. It is then prohibited to simultaneously
power the BACnet WiFi Adapter via a wall adapter.
When, on the other hand, the BACnet WiFi Adapter
is instead connected to the controller's BACnet
MS/TP interface, it is prohibited to simultaneously
use an RJ45 plug; instead, the BACnet WiFi Adapter
must then be powered by a wall adapter (standard 5­V USB wall adapter with micro USB connector).

See also corresponding Technical Literature listed in Table 15
on pg. 23.

BACnet WiFi

Niagara

ADAPTER

workbench

RJ45

PLUG

CLME-RLxN
(CLME-RSxN)

BACnet MS/TP

62

(40)

C1+

INTERNAL

CONNECTIONS

(41)

C1-

63

64

(42)

GND

RJ45 CONNECTOR

8 7654 32 1

2,3,

5,6

7 8

4

1 = DETECT
2 = GND
3 = GND
4 = 24VAC
5 = GND
6 = GND
7 = C1+
8 = C1-

Fig. 24. RJ45 interface and BACnet WiFi Adapter

CAUTION

It is permitted to connect only the BACnet WiFi
Adapter to this RJ45 connector. Do not connect IP!

Sylk Bus

Sylk Bus-capable devices (e.g., the CLCMTR40x/T42x) can
be connected to the controller's Sylk Interface (RSxN: ter­minals 20 and 21; RLxN: terminals 30 and 31). Specifically:

▪ A max. of one wall module can be connected.
▪ The Sylk Bus is single pair, and polarity-insensitive.
▪ Max. current provided at the Sylk Bus interface: 96 mA.

EN1Z-1035GE51 R0319 16

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Table 12. Recommended max. distances from controller

to CLCMTR40x/T42x wall modules

single twisted pair, non-

no.

shielded, stranded or solidA)

0.33…0.82 mm2
(18…22 AWG)

2

A)

As a rule of thumb, single twisted pair (two wires per cable, only),
thicker gauge, non-shielded cable yields the best results for longer
runs.

B)

The 30 m (100 ft) distance for standard thermostat wire is con­servative, but is meant to reduce the impact of any sources of
electrical noise (incl. but not limited to VFDs, electronic ballasts,
etc.). Shielded cable recommended only if there is a need to reduce
the effect of electrical noise.

C)

These distances apply also for shielded twisted pair.

150 m

(500 ft)

0.20 mm2

(24 AWG)

120 m

(400 ft)

standard non-twisted

thermostat wire, shielded or

non-shielded, stranded or

B), C)

solid

0.20…0.82 mm2
(18…24 AWG)

30 m (100 ft)

I/O TERMINALS

CAUTION

Failure to observe the following max. permissible
current outputs of the power output terminals will
result in damage to the device.

Max. Current Output of Power Output
Terminals of 230 VAC Controllers

The 24 VAC power output terminals of the 230 VAC RLxN
controllers are terminals 5, 6, 35, 39, 43, and 44 plus pin 4 of
the controller's RJ45 interface. Two of these terminals
(typically: 5 and 6) will be used to supply the triacs.

The 24 VAC power output terminals of the 230 VAC RSxN
controllers are terminals 3, 4, 27, and 31 plus pin 4 of the
controller's RJ45 interface. Two of these terminals (typically: 3
and 4) will be used to supply the triacs.

Regardless of whether the triacs are supplied by the con­troller's internal transformer or by an external source, the
max. permissible combined current output of the afore­mentioned 24 VAC power output terminals is 300 mA (or 320
mA for max. 2 minutes).

Consequently, if only those two 24 VAC power output ter­minals used to supply the triacs already have the max. per­missible combined current output of 300 mA (or 320 mA for
max. 2 minutes), then the current output of the remaining 24
VAC power output terminals must, of course, equal zero.

Max. Current Output of Power Output
Terminals of 24 VAC Controllers

The 24 VAC power output terminals of the 24 VAC RLxN con­trollers are terminals 5, 6, 35, 39, 43, and 44 plus pin 4 of the
controller's RJ45 interface.

The 24 VAC power output terminals of the 24 VAC RSxN con­trollers are terminals 3, 4, 22, 23, 24, 25, 27, and 31 plus pin
4 of the controller's RJ45 interface.

The max. permissible combined current output of these 24
VAC power output terminals is 300 mA.

Relay Outputs

CAUTION

Mixing of different voltages (e.g., 24 V and 230 V)
within the relay block is not allowed.

The terminal blocks containing the controller's relay outputs
are orange. Relay output types: See Table 3.

NOTE: If inductive components are to be connected to the

relays and if these relays switch more often than
once every two minutes, these components must be
prevented from causing harmful interference to radio
or television reception (conformance with EN 45014).

Relay Current Limitations

If the triacs are supplied with current from an external source,
then a maximum of two relays may be loaded with a max. of
4 A per relay – even if two triacs are each simultaneously
loaded with max. 300 mA.

If the triacs are supplied with current from an internal source,
a maximum of two relays may be loaded as follows: a max.
load of 4 A for a relay serving a fan and a max. load of 10 A
for a relay serving a reheat – even if one triac is simul­taneously loaded with 300 mA.

Triac Outputs

NOTE: Recommended fuse (F1): 1.25 A time-lag fuse (IEC).

User must consider the correct voltage and max.
breaking capacity / interrupting rate (line voltage
urgently requires high breaking capacity / interrupting
rate).

The terminal blocks containing the controller's triac outputs
are orange.

These triac outputs can be used for a variety of different
functions, e.g., for connection to either a floating drive or to a
thermal actuator. Once the triac outputs have been
programmed, the corresponding devices can then be
connected to them directly.

NOTE: The VC6983 actuator is intended for use at relay

outputs, only and must not be used at the controller's
triac outputs.

Triac Current Limitations

The max. allowed current with which the ensemble of a con­troller's triacs may be loaded is dependent upon whether the
given model is powered with 24 VAC or with 230 VAC (and, in
the case of models powered with 230 VAC, upon whether the
outputs are supplied by the controller's internal transformer or
by an external current supply). Specifically:

▪ In the case of 24 VAC models, the ensemble of a con-

troller's triacs may be loaded with 600 mA.

▪ In the case of the 230 VAC models, if the triacs are

supplied with 24 VAC current by the controller's internal
transformer, the ensemble of a controller's triacs may be
loaded with 300 mA (or 320 mA for a max. of 2 minutes);
when supplied by an external source, this value is
doubled.

However, regardless of whether the triacs are supplied
internally or externally, a single triac must never be loaded

17 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

with a current of more than 300 mA (320 mA for max. 2
minutes).

Nevertheless, the ensemble of triacs can be loaded for very
short periods of time (on the order of milliseconds) with a
current on the order of 2500 mA typically encountered when
switching on multiple thermal actuators.

Universal Inputs

The terminal blocks containing the controller's universal
inputs are blue. Universal input types: See Table 4.

The universal inputs are protected against voltages of max.
29 VAC and 30 VDC (due to, e.g., miswiring).

Bias Resistors

Each universal input is equipped with one bias resistor. See
Fig. 25.

SENSOR

DOWN

UI

S2

ADC

S1

R

BIAS

R

SER

V

UP

GND

R

Fig. 25. Schematic of universal inputs and bias resistors

LEGEND:
V

= 10 V (except for UI1-4 of RL8N, which have 24 V).

UP

R

= Bias resistor (with a resistance of 24.9 kΩ in the

R

R

BIAS

SER

DOWN

case of NTC10kΩ andNTC20kΩ sensor inputs,
and 7.5 kΩ in the case of Pt1000 sensor inputs);
can be switched OFF via software by S1 to support
0…10 V inputs without bias current ("high
impedance") – except in the case of UI1-4 of
RL8N, which have a resistance of 11.8 kΩ and
cannot be switched OFF.

= Series resistor for voltage dividing and filtering

(with a resistance of 150 kΩ).

= An internal load resistor (with a resistance of

49 kΩ); depending upon the given type of con­nected sensor, the firmware may switch this
resistor OFF.

Analog Outputs

The terminal blocks containing the controller's analog outputs
are green. Analog output types: See Table 5.

The analog outputs of the RLxN controllers (large housing)
are protected against voltages of max. 29 VAC and 30 VDC
(due to, e.g., miswiring).

NOTE: Connecting 24 VAC to any analog output of the

RSxN controller (small housing) will damage the
hardware.

Free I/O Option

The limitations – including model-dependent limitations – set
forth in Table 2, Table 3, Table 4, Table 5 apply. Further
limitations are explained below.

Free Universal Inputs

Max. 5 BACnet Analog Input Objects

Under the free I/O option, a maximum of five of the MERLIN
NX controller's unused UIs are available for use as analog
inputs by the plant controller. However, they cannot be used
for receiving input from NI1000TK5000 sensors.

Max. 5 BACnet Binary Input Objects

Under the free I/O option, a maximum of five of the MERLIN
NX Controller's unused UIs are available for use as binary
inputs by the plant controller.

Max. 2 BACnet Accumulator Objects

Under the free I/O option, a maximum of two of the MERLIN
NX Controller's unused UIs are available for use as
accumulators by the plant controller.

These accumulators can have up to 30 Hz (pulse ON ≥ 16
ms; pulse OFF ≥ 16 ms; closed: voltage < 1 V; open: voltage
> 5 V).

These accumulators can be used, e.g., for energy meters
which create pulses when energy is consumed.

Free Outputs

Max. 4 BACnet Analog Output Objects

Under the free I/O option, a maximum of four of the MERLIN
NX Controller's unused outputs (analog or binary outputs)
may be used with BACnet Analog Output objects by the plant
controller. Possible characteristics are as follows:

▪ analog output: 0(2)..10 V outputs;
▪ floating output: triac or relay outputs;
▪ PWM: triac outputs;
▪ 1-, 2-, 3-stage output: triac / relay outputs.

Max. 4 BACnet Binary Output Objects

Under the free I/O option, a maximum of four of the MERLIN
NX Controller's unused relays and triacs are available for use
as binary outputs by the plant controller. However, they can
be used only as ON / OFF binary outputs.

Example:

The customer wants the plant controller to use some of the
I/Os of the CLMERL2N not used by the application as free

EN1Z-1035GE51 R0319 18

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

I/Os, and therefore hardwires the free inputs/outputs as
shown in the following example.

Table 13. Use of unused I/Os as free I/Os (example)

Input/output Use as

UI1, 2 0…10V inputs

UI3 NTC20k temperature input

UI4, 5 binary inputs

UI6 counter

AO1 0…10V output

AO2 0…10V output

Triac 1, 2 floating actuator outputs

Triac 3, 4 floating actuator outputs

Relay 1, 2, 3, 4 binary outputs

In the above example, the customer has used the maximum
of four analog characteristics.

No further analog characteristic can be assigned; e.g. relays
1, 2 could not be used as multistate outputs.

19 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

WALL MODULES

The CLCM1T,2T,4T,5T,6T111 and CLCMTR40x/TR42x Wall
Modules can be used in conjunction with the controller to per­form room temperature sensing, setpoint adjustment, fan
speed manual override, and occupancy override.

NOTE: The CLCMTR42x Wall Module must be version

Further, the LED of the CLCM4T,5T,6T111 and the LCD of
the CLCMTR42x can be configured to provide information
about:

▪ any override of the controller by, e.g., pressing the

▪ the controller's effective occupancy mode (see section

NOTE: The intended use of the wall module's buttons must

A) Requires one UI supporting NTC.

NOTE: The CLMERL8N has ten UIs, only two of which

See also corresponding Technical Literature listed in Table 15
on pg. 23.

Configuration of Wall Module LED / LCD

The LED of a CLCM4T,5T,6T111 Wall Module can be con­figured (using Niagara) to provide information about, e.g.,
overrides or effective occupancy modes. The LCD of the
CLCMTR42x can likewise be configured to display such
information.

CLCM Configured to Display Info on Overrides

The LED of a CLCM4T,5T,6T111 Wall Module connected to
the controller can be configured to indicate if an override has
been activated because either the wall module's override
button has been pressed or the controller has received a
BACnet MS/TP network command. Specifically, the following
modes are supported:

1.00.3 or higher.

"occupancy" button of the wall module or receipt by the
controller of a BACnet MS/TP network command (see
section "CLCM Configured to Display Info on Overrides"
below);

"CLCM Configured to Display Info on Occupancy" below).

be configured using Niagara.

Table 14. Supported wall module functions

CLCM1T11N

(T7460A1001)

CLCM2T11N

(T7460B1009)

CLCM4T111

(T7460C1007)

CLCM5T111

(T7460E1002)

CLCM6T111

(T7460F1000)

A)

temp.

setpt.

sensor

adjustment

X -- -- -- --

X X -- -- --

X X X -- X

X X X auto-0-1 X

X X X auto-0-

A)

A)

bypass

fanspeed

1-2-3

A)

override

support NTC; this model is thus not suitable for the
hardwiring of wall modules requiring three UIs
supporting NTC.

LED

X

▪ NO OVERRIDE: If the wall module's LED is OFF, then no

override is currently in effect.

▪ OVERRIDE OCCUPANCY: If the wall module's LED is

ON continuously, then the wall module's override button or
a BACnet MS/TP network command has placed the
controller into the "occupied" or "override" mode (but if the
override button is again pushed or if a cancellation net­work command is received or if the override time expires,
the controller will return to its scheduled occupancy mode,
and the wall module's LED will behave accordingly).

▪ OVERRIDE HOLIDAY: If the wall module's LED flashes 2

sec OFF and 1 sec ON, then the controller has received a
network command and been placed in the "holiday" mode.

▪ OVERRIDE UNOCCUPIED: If the wall module's LED

flashes once per sec, then the wall module's override
button or a network command has placed the controller
into the "unoccupied" mode (however, if the override
button is again pushed or if a cancellation BACnet MS/TP
network command is received, the controller will return to
its scheduled occupancy mode, and the wall module's
LED will behave accordingly).

▪ If the wall module's LED flashes twice per sec, then a

BACnet MS/TP network command has placed the con­troller into either the "standby" or the "occupied" mode.

CLCM Configured to Display Info on Occupancy

The LED of a CLCM4T,5T,6T111 Wall Module connected to
the controller can also be configured to indicate the con­troller's effective occupancy mode. Specifically, the following
modes are supported:

▪ UNOCCUPIED: If the wall module's LED is OFF, then the

controller is in the "unoccupied" mode.

▪ STANDBY: If the wall module's LED flashes once per sec,

then the controller has received a network command and
been placed in the "standby" mode.

▪ OCCUPIED: If the wall module's LED is ON, then the con-

troller is in the "occupied" mode.

▪ BYPASS: If the wall module's LED is ON continuously,

then the controller has received a network command and
been placed in the "bypass" mode.

▪ HOLIDAY: If the wall module's LED is OFF, then the con-

troller has received a network command and been placed
in the "holiday" mode.

LCD of a TR42x Configured to Display Info on
Occupancy

The LCD of a CLCMTR42x connected to the controller can be
configured to display various texts and symbols to indicate the
effective occupancy mode of the controller. See the following
sections "Unoccupied Mode," "Standby Mode," and
"Occupied Mode."

EN1Z-1035GE51 R0319 20

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Unoccupied Mode

CLCMTR42xx CONFIGURED

TO DISPLAY ENGLISH

OFF

FAN

OVERRIDE

OVERRIDE

CANCEL

AUTO

FAN

OVERRIDE

CANCEL OVERRIDE

CANCEL

H/C

AUTO

2.0

OVERRIDE

H/C

AUTO

2.0

CANCEL OVR

DONE

DONE

°C

OVERRIDE

°C

CLCMTR42xx CONFIGURED

TO DISPLAY SYMBOLS

H/C

OFF

AUTO

°C

2.0

H/C

AUTO

AUTO

°C

2.0

Standby Mode

CLCMTR42xx CONFIGURED

TO DISPLAY ENGLISH

CANCEL

AUTO

CANCEL

H/C

OFF

AUTO

2.0

FAN

OVERRIDE

OVERRIDE

H/C

AUTO

2.0

FAN

CANCEL OVR

OVERRIDE

CANCEL OVERRIDE

°C

OVERRIDE

DONE

OVERRIDE

°C

DONE

CLCMTR42xx CONFIGURED

TO DISPLAY SYMBOLS

H/C

OFF

AUTO

°C

2.0

H/C

AUTO

AUTO

°C

2.0

Fig. 26. Example "unoccupied" screens

If

is displayed, the controller is in the "unoccupied"

mode.
The user can override the "unoccupied" mode by touching the

upper right softkey. An intermediate screen will then flash for
a few seconds, allowing the user to either cancel (upper left
softkey) or confirm (upper right softkey). If the user neither
cancels nor confirms, this will be considered a confirmation,
and the controller will be placed in the "overridden to bypass"
mode. If, on the other hand, the user cancels, the controller
will revert to the "unoccupied" mode.

Fig. 27. Example "standby" screens

If

is displayed, the controller is in the "standby" mode.

The user can override the "standby" mode by touching the
upper right softkey. An intermediate screen will then flash for
a few seconds, allowing the user to either cancel (upper left
softkey) or confirm (upper right softkey). If the user neither
cancels nor confirms, this will be considered a confirmation,
and the controller will be placed in the "overridden to bypass"
mode. If, on the other hand, the user cancels, the controller
will revert to the "standby" mode.

Occupied Mode

CLCMTR42xx CONFIGURED

TO DISPLAY ENGLISH

H/C

OFF OFF

AUTO

°C °C

2.0 2.0

FAN

Fig. 28. Example "occupied" screens

If

is displayed, the controller is in the "occupied" mode.

CLCMTR42xx CONFIGURED

TO DISPLAY SYMBOLS

H/C

AUTO

21 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

A

A

A

LCD of a TR42x Configured to Display Info on Fan

OFF

If

is displayed, the fan is switched OFF. Depending
upon the given application configuration, the effective control
mode for underfloor heating, radiator, ceiling heating, and
ceiling cooling can then be switched OFF as well.

Configuring the TR42x for Heating / Cooling

With the TR42x, the user can select whether he wants to
have:

▪ cooling (

▪ heating (

▪ cooling plus heating (auto) (
By doing so, inadvertent heating or cooling is prevented.

Selecting "auto" results in automatic switching between
cooling and heating.

To make these selections, the user must enter the expanded
menu (see section below).

Expanded Menu

The user can enter the expanded menu at any time (i.e., in
any mode). This is done by touching both upper softkeys
simultaneously (see Fig. 29). The "temperature" screen
appears first. The user can scroll to further screens ("heating /
cooling," "relative humidity," and "CO
the left (

NOTE: The user can, at any time, exit the expanded menu

In the expanded menu, the current temperature, relative
humidity, and CO

The user can change automatic heating / cooling by scrolling
(arrow softkeys) to the "heating / cooling" screen and then
touching the upper right softkey, (below the "
the word "EDIT"). The actual setting will then flash at 1 Hz for
approx. 7 seconds, during which time the user can either
cancel the given setting (upper left softkey, below the "
symbol or the word "CANCEL") or confirm it (upper right
softkey, below the "
action is taken within this time, the given setting is auto­matically confirmed.

C

),

), or

H/C

AUTO

).

concentration") using

2

) or right ( ) arrow softkey.

using the upper left softkey (below the "

" symbol
or the word "HOME") – or by simply waiting approx.
60 seconds.

concentration can be displayed.

2

" symbol or

"

" symbol or the word "DONE"). If no

CLCMTR42xx CONFIGURED

TO DISPLAY SYMBOLS

H/C

OFF

UTO

°C

2.0

°C

25.5

CTUAL

C

H/C

UTO

41

CO

603

%

%

2

ppm

FLASHES 7 SEC!

C

H/C

AUTO

FLASHES 7 SEC!

C

FLASHES 7 SEC!

C

C

Fig. 29. Accessing the expanded menu

EN1Z-1035GE51 R0319 22

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

TROUBLESHOOTING

All units feature a Service Button, Status LED, Power LED,
and two additional LEDs (T1 and R1) for commissioning and
troubleshooting. See also Table 8 and Table 9 and section
"Service Button".

Check if the Status LED's behavior is changed if you switch
the power OFF/ON. Please contact Honeywell if this does not
solve the problem.

Further, the test function of Niagara can also be used to carry
out general application and wiring checks. Niagara also
features a BACnet Object Browser which can prove very
helpful in analyzing the controller's function and
communication.

ACCESSORIES

Terminal Protection Cover; required for wall mounting. Bulk
pack, set of ten covers.

▪ For large controllers, order no.: IRM-RLC
▪ For small controllers, order no.: IRM-RSC

APPROVALS, CERTIFICATIONS, ETC.

Approvals and Certifications

▪ UL 60730-1, Standard for Automatic Electric Controls for

Household and Similar Use, Part 1: General
Requirements;

▪ CAN/CSA-E60730-1:02, Standard for Automatic Electrical

Controls for Household and Similar Use, Part 1: General

Requirements;
▪ Complementary listing for UL916, CSA C22.2 No. 205;
▪ BTL-listed, BACnet AAC profile;
▪ SASO-approved;
▪ CE-approved;
▪ FCC part 15B-compliant: This equipment has been tested

and found to comply with the limits for a Class B digital

device, pursuant to part 15 of the FCC Rules. These limits

are designed to provide reasonable protection against

harmful interference in a residential installation. This

equipment generates, uses, and can radiate radio-

frequency energy and, if not installed and used in

accordance with the instructions, may cause harmful

interference to radio communications. However, there is

no guarantee that interference will not occur in a particular

installation. If this equipment does cause harmful

interference to radio or television reception, which can be

determined by turning the equipment off and on, the user

is encouraged to try to correct the interference by one or

more of the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and
receiver.

- Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV
technician for help.

Classification according to EN 60730-1

EN 60730 sub part: EN 60730-2-9
Environmental conditions: For use in home (residential,

Construction: independently mounted control,

Action: type 1.C
Rated impulse voltage: 2500 V at 230 V; 500 V at 24 V
Pollution degree: 2
Protection against shock: Class 0 (without terminal covers)

Software class: Class A

commercial, and light-industrial)
environments

for panel-mounting

Class II (with terminal covers)

Classification according to EN 60529

(Degree of protection provided by enclosures)
IP20. In the case of controllers mounted outside of a cabinet,

before applying power to the device, Terminal Protection
Covers (10-pc. bulk packs, order no.: IRM-RLC for large
housings and IRM-RSC for small housings) must be mounted
so as to provide IP30.

Ambient Environmental Limits

(5…90% r.H., non-condensing)

Operating temperature
(floor/ceiling mounting): 0 … +40 °C

Operating temperature
(wall/rail mounting): 0 … +50 °C

Storage temperature: -20 … +70 °C

RELATED TECHNICAL LITERATURE

Table 15. Related Technical Literature

Title

CLMERxxN Room Controller – Mount. Instr. MU1Z-1035GE51

CLMERxxN Room Controller – Data Sheet EN0Z-1035GE51

CLMERxxN Room Controller – Inst. & Comm.
Instr.

CLCM1T,2T,4T,5T,6T – Product Data EN0Z-0901GE51

CLCM1T,2T,4T,5T,6T – Installation Instructions MU1Z-0901GE51

CLCMTR40x/TR42x – Specification Data EN0Z-0990GE51

Product

Literature no.

EN1Z-1035GE51

23 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

APPENDIX: SENSOR CHARACTERISTICS

Sensor Input Accuracy

The controller's internal sensor inputs support NTC10kΩ and NTC20kΩ sensors. The following table lists the typical minimum
accuracies of the hardware and software for these temperature sensors.

Table 16. Accuracies of internal NTC10kΩ and NTC20kΩ sensor inputs of the Excel Web II

range measurement error (excluding sensor characteristics)

-50 … -20 °C (-58 … -4 °F) ≤ 5.0 K ≤ 5.0 K

-20 … 0 °C (-4 … +32 °F) ≤ 1.0 K ≤ 1.0 K
0 … 30 °C (32 … 86 °F) ≤ 0.5 K ≤ 0.3 K
30 … 70 °C (86 … 158 °F) ≤ 0.5 K ≤ 0.5 K
70 … 100 °C (158 … 212 °F) ≤ 1.0 K ≤ 1.0 K
100 … 130 °C (212 … 266 °F) -- ≤ 3.0 K
130 … 150 °C (266 … 302 °F) -- ≤ 5.5 K
150 … 400 °C (302 … 752 °F) -- --

(1

NTC10kΩ specified for -30 … +100 °C, only.

NOTE: This is the accuracy of the internal sensor input (hardware + software [linearization]), only. This table does not include

the characteristics of the sensors, themselves (see section “Sensor Characteristics” below). If a different sensor or
sensor accuracy is required, one may instead use the inputs of, e.g., a connected Panel I/O module.

NTC10kΩ

Recognition of Sensor Failure of Sensor Inputs

The thresholds at which sensor failures – i.e., sensor breaks (SB) and short-circuits (SC) – are recognized depends upon the
given sensor type. In the event of a recognized sensor failure, the sensor inputs assume the safety values configured in CARE.
Table 17 lists the measurement ranges and the corresponding thresholds for the recognition of sensor failure for the various
different sensor types:

Table 17. Thresholds for short-circuit (SC) and sensor-break (SB) recognition

I/O configuration measurement range recognition thresholds

2…10 V 2…10 V / 4…20 mA (without pull-up) SC: < 1.5 V / 3 mA; SB: no recognition
NTC10kΩ -50 … +100 °C SC: < 20 Ω; SB: < -70 °C
NTC20kΩ -50 … +150 °C SC: < 20 Ω; SB: < -70 °C
PT1000 -30 … + 400 °C SC: < 775 Ω; SB: < -50 °C
Ni1000TK5000 -70 … +130 °C SC: < 850 Ω; SB: < -30 °C

NOTE: In the case of temperatures lying outside the aforementioned ranges, the lowest/highest value within the range, instead,

will be communicated. Thus a temperature of -51 °C will be communicated as “-50 °C.”

Sensor Characteristics

The characteristics (resistance in relation to temperature) of the sensors and the resultant voltage are listed on the following
pages. The stated values do not include failures due to: sensor failures; wiring resistance or wiring failures; misreadings due to a
meter connected to measure resistance or voltage at the input.

(1

NTC20kΩ

EN1Z-1035GE51 R0319 24

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

NTC 10 kΩ

Resistance

Temp.

[°C]

-30 177 7.904

-29 166.35 7.848

-28 156.413 7.790

-27 147.136 7.730

-26 138.47 7.666

-25 130.372 7.601

-24 122.8 7.534

-23 115.718 7.464

-22 109.089 7.392

-21 102.883 7.318

-20 97.073 7.241

-19 91.597 7.161

-18 86.471 7.080

-17 81.667 6.996

-16 77.161 6.910

-15 72.932 6.821

-14 68.962 6.731

-13 65.231 6.639

-12 61.723 6.545

-11 58.424 6.448

-10 55.321 6.351

-9 52.399 6.251

-8 49.648 6.150

-7 47.058 6.047

-6 44.617 5.943

-5 42.317 5.838

-4 40.15 5.732

-3 38.106 5.624

-2 36.18 5.516

-1 34.363 5.408

0 32.65 5.299

1 31.027 5.189

2 29.494 5.079

3 28.047 4.969

4 26.68 4.859

5 25.388 4.750

6 24.166 4.641

7 23.01 4.532

8 21.916 4.423

9 20.88 4.316

10 19.898 4.209

11 18.968 4.103

[k

Terminal

voltage [V]

Resistance

Temp.

[°C]

[k

Terminal

voltage [V]

12 18.087 3.998

13 17.252 3.894

14 16.46 3.792

15 15.708 3.690

16 14.995 3.591

17 14.319 3.492

18 13.678 3.396

19 13.068 3.300

20 12.49 3.207

21 11.94 3.115

22 11.418 3.025

23 10.921 2.937

24 10.449 2.850

25 10 2.767

26 9.572 2.684

27 9.165 2.603

28 8.777 2.524

29 8.408 2.447

30 8.057 2.372

31 7.722 2.299

32 7.402 2.228

33 7.098 2.159

34 6.808 2.091

35 6.531 2.025

36 6.267 1.962

37 6.015 1.900

38 5.775 1.840

39 5.546 1.781

40 5.327 1.724

41 5.117 1.669

42 4.917 1.616

43 4.726 1.564

44 4.543 1.514

45 4.369 1.465

46 4.202 1.418

47 4.042 1.373

48 3.889 1.329

49 3.743 1.286

50 3.603 1.244

51 3.469 1.204

52 3.34 1.166

53 3.217 1.128

Resistance

Temp.

[°C]

[k

Terminal

voltage [V]

54 3.099 1.092

55 2.986 1.057

56 2.878 1.023

57 2.774 0.990

58 2.675 0.959

59 2.579 0.928

60 2.488 0.898

61 2.4 0.870

62 2.316 0.842

63 2.235 0.815

64 2.158 0.790

65 2.083 0.765

66 2.011 0.740

67 1.943 0.718

68 1.877 0.695

69 1.813 0.673

70 1.752 0.652

71 1.694 0.632

72 1.637 0.612

73 1.583 0.593

74 1.531 0.575

75 1.481 0.557

76 1.433 0.541

77 1.387 0.524

78 1.342 0.508

79 1.299 0.493

80 1.258 0.478

81 1.218 0.464

82 1.179 0.450

83 1.142 0.436

84 1.107 0.423

85 1.072 0.411

86 1.039 0.399

87 1.007 0.387

88 0.976 0.375

89 0.947 0.365

90 0.918 0.354

91 0.89 0.344

92 0.863 0.334

93 0.838 0.324

94 0.813 0.315

95 0.789 0.306

Resistance

Temp.

[°C]

[k

96 0.765 0.297

97 0.743 0.289

98 0.721 0.280

99 0.7 0.276

100 0.68 0.265

Terminal

voltage [V]

25 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

NTC 20 k

Temp.

Resistance

[°C]

[k

-50.0 1659 8.78

-49.0 1541 8.77

-48.0 1432 8.76

-47.0 1331 8.75

-46.0 1239 8.74

-45.0 1153 8.72

-44.0 1073 8.71

-43.0 1000 8.70

-42.0 932 8.69

-41.0 869 8.67

-40.0 811 8.66

-39.0 757 8.64

-38.0 706 8.62

-37.0 660 8.60

-36.0 617 8.58

-35.0 577 8.56

-34.0 539 8.54

-33.0 505 8.52

-32.0 473 8.49

-31.0 443 8.47

-30.0 415 8.44

-29.0 389 8.41

-28.0 364 8.38

-27.0 342 8.35

-26.0 321 8.32

-25.0 301 8.28

-24.0 283 8.25

-23.0 266 8.21

-22.0 250 8.17

-21.0 235 8.13

-20.0 221 8.08

-19.0 208 8.04

-18.0 196 7.99

-17.0 184 7.94

-16.0 174 7.89

-15.0 164 7.83

-14.0 154 7.78

-13.0 146 7.72

-12.0 137 7.66

-11.0 130 7.60

-10.0 122 7.53

-9.0 116 7.46

-8.0 109 7.39

-7.0 103 7.32

-6.0 97.6 7.25

-5.0 92.3 7.17

-4.0 87.3 7.09

-3.0 82.6 7.01

-2.0 78.2 6.93

-1.0 74.1 6.85

Termina l

voltage [V]

Temp.

[°C]

Resistance

[k

Terminal

voltage [V]

0.0 70.2 6.76

1.0 66.5 6.67

2.0 63.0 6.58

3.0 59.8 6.49

4.0 56.7 6.40

5.0 53.8 6.30

6.0 51.1 6.20

7.0 48.5 6.10

8.0 46.0 6.00

9.0 43.7 5.90

10.0 41.6 5.80

11.0 39.5 5.70

12.0 37.6 5.59

13.0 35.7 5.49

14.0 34.0 5.38

15.0 32.3 5.28

16.0 30.8 5.17

17.0 29.3 5.07

18.0 27.9 4.96

19.0 26.6 4.85

20.0 25.3 4.75

21.0 24.2 4.64

22.0 23.0 4.53

23.0 22.0 4.43

24.0 21.0 4.32

25.0 20.0 4.22

26.0 19.1 4.12

27.0 18.2 4.01

28.0 17.4 3.91

29.0 16.6 3.81

30.0 15.9 3.71

31.0 15.2 3.62

32.0 14.5 3.52

33.0 13.9 3.43

34.0 13.3 3.33

35.0 12.7 3.24

36.0 12.1 3.15

37.0 11.6 3.06

38.0 11.1 2.97

39.0 10.7 2.89

40.0 10.2 2.81

41.0 9.78 2.72

42.0 9.37 2.64

43.0 8.98 2.57

44.0 8.61 2.49

45.0 8.26 2.42

46.0 7.92 2.34

47.0 7.60 2.27

48.0 7.29 2.20

49.0 7.00 2.14

Temp.

[°C]

Resistance

[k

Termina l

voltage [V]

50.0 6.72 2.07

51.0 6.45 2.01

52.0 6.19 1.94

53.0 5.95 1.88

54.0 5.72 1.82

55.0 5.49 1.77

56.0 5.28 1.71

57.0 5.08 1.66

58.0 4.88 1.61

59.0 4.69 1.56

60.0 4.52 1.51

61.0 4.35 1.46

62.0 4.18 1.41

63.0 4.03 1.37

64.0 3.88 1.32

65.0 3.73 1.28

66.0 3.59 1.24

67.0 3.46 1.20

68.0 3.34 1.16

69.0 3.21 1.13

70.0 3.10 1.09

71.0 2.99 1.06

72.0 2.88 1.02

73.0 2.78 0.991

74.0 2.68 0.960

75.0 2.58 0.929

76.0 2.49 0.900

77.0 2.41 0.872

78.0 2.32 0.844

79.0 2.24 0.818

80.0 2.17 0.792

81.0 2.09 0.767

82.0 2.02 0.744

83.0 1.95 0.720

84.0 1.89 0.698

85.0 1.82 0.676

86.0 1.76 0.655

87.0 1.70 0.635

88.0 1.65 0.616

89.0 1.59 0.597

90.0 1.54 0.578

91.0 1.49 0.561

92.0 1.44 0.544

93.0 1.40 0.527

94.0 1.35 0.511

95.0 1.31 0.496

96.0 1.27 0.481

97.0 1.23 0.466

98.0 1.19 0.452

99.0 1.15 0.439

Temp.

100.0 1.11 0.425

101.0 1.08 0.413

102.0 1.05 0.401

103.0 1.01 0.389

104.0 0.98 0.378

105.0 0.95 0.367

106.0 0.92 0.356

107.0 0.90 0.346

108.0 0.87 0.336

109.0 0.84 0.326

110.0 0.82 0.317

111.0 0.79 0.308

112.0 0.77 0.299

113.0 0.75 0.290

114.0 0.73 0.282

115.0 0.70 0.274

116.0 0.68 0.266

117.0 0.66 0.259

118.0 0.64 0.252

119.0 0.63 0.245

120.0 0.61 0.238

121.0 0.59 0.231

122.0 0.57 0.225

123.0 0.56 0.219

124.0 0.54 0.213

125.0 0.53 0.207

126.0 0.51 0.201

127.0 0.50 0.196

128.0 0.49 0.191

129.0 0.47 0.186

130.0 0.46 0.181

131.0 0.45 0.176

132.0 0.43 0.171

133.0 0.42 0.167

134.0 0.41 0.162

135.0 0.40 0.158

136.0 0.39 0.154

137.0 0.38 0.150

138.0 0.37 0.146

139.0 0.36 0.142

140.0 0.35 0.139

141.0 0.34 0.135

142.0 0.33 0.132

143.0 0.32 0.128

144.0 0.32 0.125

145.0 0.31 0.122

146.0 0.30 0.119

147.0 0.29 0.116

148.0 0.29 0.113

149.0 0.28 0.110

150.0 0.27 0.107

[°C]

Resistance

[k

Terminal

voltage [V]

EN1Z-1035GE51 R0319 26

PT 1000

Temp.

Resistance

[°C]

-50.0 803 0.312

-49.0 807 0.314

-48.0 811 0.315

-47.0 815 0.317

-46.0 819 0.318

-45.0 823 0.320

-44.0 827 0.321

-43.0 831 0.323

-42.0 835 0.324

-41.0 839 0.326

-40.0 843 0.327

-39.0 847 0.329

-38.0 851 0.330

-37.0 855 0.332

-36.0 859 0.333

-35.0 862 0.335

-34.0 866 0.336

-33.0 870 0.338

-32.0 874 0.339

-31.0 878 0.341

-30.0 882 0.342

-29.0 886 0.344

-28.0 890 0.345

-27.0 894 0.347

-26.0 898 0.348

-25.0 902 0.350

-24.0 906 0.351

-23.0 910 0.353

-22.0 914 0.354

-21.0 918 0.356

-20.0 922 0.357

-19.0 926 0.359

-18.0 929 0.360

-17.0 933 0.361

-16.0 937 0.363

-15.0 941 0.364

-14.0 945 0.366

-13.0 949 0.367

-12.0 953 0.369

-11.0 957 0.370

-10.0 961 0.372

-9.0 965 0.373

-8.0 969 0.375

-7.0 973 0.376

-6.0 977 0.378

-5.0 980 0.379

-4.0 984 0.380

-3.0 988 0.382

-2.0 992 0.383

-1.0 996 0.385

0.0 1000 0.386

1.0 1004 0.388

2.0 1008 0.389

3.0 1012 0.391

4.0 1016 0.392

5.0 1020 0.394

6.0 1023 0.395

7.0 1027 0.396

8.0 1031 0.398

9.0 1035 0.399

[

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Terminal

voltage [V]

Temp.

[°C]

Resistance

[

Terminal

voltage [V]

10.0 1039 0.401

11.0 1043 0.402

12.0 1047 0.404

13.0 1051 0.405

14.0 1055 0.406

15.0 1058 0.408

16.0 1062 0.409

17.0 1066 0.411

18.0 1070 0.412

19.0 1074 0.413

20.0 1078 0.415

21.0 1082 0.416

22.0 1086 0.418

23.0 1090 0.419

24.0 1093 0.420

25.0 1097 0.422

26.0 1101 0.423

27.0 1105 0.425

28.0 1109 0.426

29.0 1113 0.428

30.0 1117 0.429

31.0 1121 0.431

32.0 1124 0.432

33.0 1128 0.433

34.0 1132 0.435

35.0 1136 0.436

36.0 1140 0.438

37.0 1144 0.439

38.0 1148 0.441

39.0 1152 0.442

40.0 1155 0.443

41.0 1159 0.445

42.0 1163 0.446

43.0 1167 0.448

44.0 1171 0.449

45.0 1175 0.451

46.0 1179 0.452

47.0 1182 0.453

48.0 1186 0.455

49.0 1190 0.456

50.0 1194 0.458

51.0 1198 0.459

52.0 1202 0.461

53.0 1205 0.462

54.0 1209 0.463

55.0 1213 0.465

56.0 1217 0.466

57.0 1221 0.467

58.0 1225 0.469

59.0 1229 0.470

60.0 1232 0.471

61.0 1236 0.473

62.0 1240 0.474

63.0 1244 0.476

64.0 1248 0.477

65.0 1252 0.479

66.0 1255 0.480

67.0 1259 0.481

68.0 1263 0.483

69.0 1267 0.484

Temp.

[°C]

Resistance

Terminal

voltage [V]

[

70.0 1271 0.486

71.0 1275 0.487

72.0 1278 0.488

73.0 1282 0.490

74.0 1286 0.491

75.0 1290 0.493

76.0 1294 0.494

77.0 1297 0.495

78.0 1301 0.497

79.0 1305 0.498

80.0 1309 0.499

81.0 1313 0.501

82.0 1317 0.502

83.0 1320 0.503

84.0 1324 0.505

85.0 1328 0.506

86.0 1332 0.508

87.0 1336 0.509

88.0 1339 0.510

89.0 1343 0.512

90.0 1347 0.513

91.0 1351 0.515

92.0 1355 0.516

93.0 1358 0.517

94.0 1362 0.519

95.0 1366 0.520

96.0 1370 0.522

97.0 1374 0.523

98.0 1377 0.524

99.0 1381 0.525

100.0 1385 0.527

101.0 1389 0.528

102.0 1393 0.530

103.0 1396 0.531

104.0 1400 0.532

105.0 1404 0.534

106.0 1408 0.535

107.0 1412 0.537

108.0 1415 0.538

109.0 1419 0.539

110.0 1423 0.541

111.0 1427 0.542

112.0 1430 0.543

113.0 1434 0.545

114.0 1438 0.546

115.0 1442 0.547

116.0 1446 0.549

117.0 1449 0.550

118.0 1453 0.551

119.0 1457 0.553

120.0 1461 0.554

121.0 1464 0.555

122.0 1468 0.557

123.0 1472 0.558

124.0 1476 0.560

125.0 1479 0.561

126.0 1483 0.562

127.0 1487 0.564

128.0 1491 0.565

129.0 1494 0.566

Temp.

Resistance

[°C]

[

130.0 1498 0.567

131.0 1502 0.569

132.0 1506 0.570

133.0 1510 0.572

134.0 1513 0.573

135.0 1517 0.574

136.0 1521 0.576

137.0 1525 0.577

138.0 1528 0.578

139.0 1532 0.580

140.0 1536 0.581

141.0 1539 0.582

142.0 1543 0.584

143.0 1547 0.585

144.0 1551 0.586

145.0 1554 0.587

146.0 1558 0.589

147.0 1562 0.590

148.0 1566 0.592

149.0 1569 0.593

150.0 1573 0.594

151.0 1577 0.596

152.0 1581 0.597

153.0 1584 0.598

154.0 1588 0.600

155.0 1592 0.601

156.0 1596 0.602

157.0 1599 0.603

158.0 1603 0.605

159.0 1607 0.606

160.0 1610 0.607

161.0 1614 0.609

162.0 1618 0.610

163.0 1622 0.612

164.0 1625 0.613

165.0 1629 0.614

166.0 1633 0.615

167.0 1636 0.617

168.0 1640 0.618

169.0 1644 0.619

170.0 1648 0.621

171.0 1651 0.622

172.0 1655 0.623

173.0 1659 0.625

174.0 1662 0.626

175.0 1666 0.627

176.0 1670 0.629

177.0 1674 0.630

178.0 1677 0.631

179.0 1681 0.632

180.0 1685 0.634

181.0 1688 0.635

182.0 1692 0.636

183.0 1696 0.638

184.0 1699 0.639

185.0 1703 0.640

186.0 1707 0.642

187.0 1711 0.643

188.0 1714 0.644

189.0 1718 0.645

Terminal

voltage [V]

27 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Temp.

Resistance

[°C]

190.0 1722 0.647

191.0 1725 0.648

192.0 1729 0.649

193.0 1733 0.651

194.0 1736 0.652

195.0 1740 0.653

196.0 1744 0.655

197.0 1747 0.656

198.0 1751 0.657

199.0 1755 0.658

200.0 1758 0.659

201.0 1762 0.661

202.0 1766 0.662

203.0 1769 0.663

204.0 1773 0.665

205.0 1777 0.666

206.0 1780 0.667

207.0 1784 0.669

208.0 1788 0.670

209.0 1791 0.671

210.0 1795 0.672

211.0 1799 0.674

212.0 1802 0.675

213.0 1806 0.676

214.0 1810 0.678

215.0 1813 0.679

216.0 1817 0.680

217.0 1821 0.681

218.0 1824 0.683

219.0 1828 0.684

220.0 1832 0.685

221.0 1835 0.686

222.0 1839 0.688

223.0 1843 0.689

224.0 1846 0.690

225.0 1850 0.692

226.0 1854 0.693

227.0 1857 0.694

228.0 1861 0.695

229.0 1865 0.697

230.0 1868 0.698

231.0 1872 0.699

232.0 1875 0.700

233.0 1879 0.702

234.0 1883 0.703

235.0 1886 0.704

236.0 1890 0.705

237.0 1894 0.707

238.0 1897 0.708

239.0 1901 0.709

240.0 1905 0.711

241.0 1908 0.712

242.0 1912 0.713

243.0 1915 0.714

244.0 1919 0.716

245.0 1923 0.717

246.0 1926 0.718

247.0 1930 0.719

248.0 1934 0.721

249.0 1937 0.722

[

Termina l

voltage [V]

Temp.

[°C]

Resistance

[

Terminal

voltage [V]

250.0 1941 0.723

251.0 1944 0.724

252.0 1948 0.726

253.0 1952 0.727

254.0 1955 0.728

255.0 1959 0.729

256.0 1962 0.730

257.0 1966 0.732

258.0 1970 0.733

259.0 1973 0.734

260.0 1977 0.736

261.0 1980 0.737

262.0 1984 0.738

263.0 1988 0.739

264.0 1991 0.740

265.0 1995 0.742

266.0 1998 0.743

267.0 2002 0.744

268.0 2006 0.746

269.0 2009 0.747

270.0 2013 0.748

271.0 2016 0.749

272.0 2020 0.750

273.0 2024 0.752

274.0 2027 0.753

275.0 2031 0.754

276.0 2034 0.755

277.0 2038 0.757

278.0 2042 0.758

279.0 2045 0.759

280.0 2049 0.760

281.0 2052 0.761

282.0 2056 0.763

283.0 2060 0.764

284.0 2063 0.765

285.0 2067 0.766

286.0 2070 0.768

287.0 2074 0.769

288.0 2077 0.770

289.0 2081 0.771

290.0 2085 0.773

291.0 2088 0.774

292.0 2092 0.775

293.0 2095 0.776

294.0 2099 0.777

295.0 2102 0.778

296.0 2106 0.780

297.0 2110 0.781

298.0 2113 0.782

299.0 2117 0.784

300.0 2120 0.785

301.0 2124 0.786

302.0 2127 0.787

303.0 2131 0.788

304.0 2134 0.789

305.0 2138 0.791

306.0 2142 0.792

307.0 2145 0.793

308.0 2149 0.794

309.0 2152 0.796

Temp.

[°C]

Resistance

[

Termina l

voltage [V]

310.0 2156 0.797

311.0 2159 0.798

312.0 2163 0.799

313.0 2166 0.800

314.0 2170 0.802

315.0 2173 0.803

316.0 2177 0.804

317.0 2181 0.805

318.0 2184 0.806

319.0 2188 0.808

320.0 2191 0.809

321.0 2195 0.810

322.0 2198 0.811

323.0 2202 0.812

324.0 2205 0.814

325.0 2209 0.815

326.0 2212 0.816

327.0 2216 0.817

328.0 2219 0.818

329.0 2223 0.820

330.0 2226 0.821

331.0 2230 0.822

332.0 2234 0.823

333.0 2237 0.824

334.0 2241 0.826

335.0 2244 0.827

336.0 2248 0.828

337.0 2251 0.829

338.0 2255 0.830

339.0 2258 0.831

340.0 2262 0.833

341.0 2265 0.834

342.0 2269 0.835

343.0 2272 0.836

344.0 2276 0.838

345.0 2279 0.839

346.0 2283 0.840

347.0 2286 0.841

348.0 2290 0.842

349.0 2293 0.843

350.0 2297 0.845

351.0 2300 0.846

352.0 2304 0.847

353.0 2307 0.848

354.0 2311 0.849

355.0 2314 0.850

356.0 2318 0.852

357.0 2321 0.853

358.0 2325 0.854

359.0 2328 0.855

360.0 2332 0.856

361.0 2335 0.857

362.0 2339 0.859

363.0 2342 0.860

364.0 2346 0.861

365.0 2349 0.862

366.0 2353 0.863

367.0 2356 0.864

368.0 2360 0.866

369.0 2363 0.867

Temp.

370.0 2367 0.868

371.0 2370 0.869

372.0 2373 0.870

373.0 2377 0.871

374.0 2380 0.872

375.0 2384 0.874

376.0 2387 0.875

377.0 2391 0.876

378.0 2394 0.877

379.0 2398 0.878

380.0 2401 0.879

381.0 2405 0.881

382.0 2408 0.882

383.0 2412 0.883

384.0 2415 0.884

385.0 2419 0.885

386.0 2422 0.886

387.0 2426 0.888

388.0 2429 0.889

389.0 2432 0.890

390.0 2436 0.891

391.0 2439 0.892

392.0 2443 0.893

393.0 2446 0.894

394.0 2450 0.896

395.0 2453 0.897

396.0 2457 0.898

397.0 2460 0.899

398.0 2463 0.900

399.0 2467 0.901

400.0 2470 0.902

[°C]

Resistance

[

Terminal

voltage [V]

EN1Z-1035GE51 R0319 28

NI1000TK5000

Temp.

Resistance

[°C]

-30 871.7 0.338

-29 875.8 0.340

-28 880 0.341

-27 884.1 0.343

-26 888.3 0.344

-25 892.5 0.346

-24 896.7 0.348

-23 900.8 0.349

-22 905.1 0.351

-21 909.3 0.352

-20 913.5 0.354

-19 917.7 0.355

-18 922 0.357

-17 926.2 0.359

-16 930.5 0.360

-15 934.7 0.362

-14 939 0.363

-13 943.3 0.365

-12 947.6 0.367

-11 951.9 0.368

-10 956.2 0.370

-9 960.6 0.371

-8 964.9 0.373

-7 969.3 0.375

-6 973.6 0.376

-5 978 0.378

-4 982.4 0.380

-3 986.7 0.381

-2 991.2 0.383

-1 995.6 0.384

0 1000 0.386

1 1004.4 0.388

2 1008.9 0.389

3 1013.3 0.391

4 1017.8 0.393

5 1022.3 0.394

6 1026.7 0.396

7 1031.2 0.398

8 1035.8 0.399

9 1040.3 0.401

10 1044.8 0.403

11 1049.3 0.404

12 1053.9 0.406

13 1058.4 0.408

14 1063 0.409

15 1067.6 0.411

16 1072.2 0.413

17 1076.8 0.415

[Ω]

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Terminal

voltage [V]

Temp.

[°C]

Resistance

[Ω]

Termina l

voltage [V]

18 1081.4 0.416

19 1086 0.418

20 1090.7 0.420

21 1095.3 0.421

22 1100 0.423

23 1104.6 0.425

24 1109.3 0.427

25 1114 0.428

26 1118.7 0.430

27 1123.4 0.432

28 1128.1 0.433

29 1132.9 0.435

30 1137.6 0.437

31 1142.4 0.439

32 1147.1 0.440

33 1151.9 0.442

34 1156.7 0.444

35 1161.5 0.446

36 1166.3 0.447

37 1171.2 0.449

38 1176 0.451

39 1180.9 0.453

40 1185.7 0.455

41 1190.6 0.456

42 1195.5 0.458

43 1200.4 0.460

44 1205.3 0.462

45 1210.2 0.463

46 1215.1 0.465

47 1220.1 0.467

48 1225 0.469

49 1230 0.471

50 1235 0.473

51 1240 0.474

52 1245 0.476

53 1250 0.478

54 1255 0.480

55 1260.1 0.482

56 1265.1 0.484

57 1270.2 0.485

58 1275.3 0.487

59 1280.3 0.489

60 1285.4 0.491

61 1290.6 0.493

62 1295.7 0.495

63 1300.8 0.496

64 1306 0.498

65 1311.1 0.500

Temp.

[°C]

Resistance

[Ω]

Terminal

voltage [V]

66 1316.3 0.502

67 1321.5 0.504

68 1326.7 0.506

69 1331.9 0.508

70 1337.1 0.510

71 1342.4 0.512

72 1347.6 0.513

73 1352.9 0.515

74 1358.2 0.517

75 1363.5 0.519

76 1368.8 0.521

77 1374.1 0.523

78 1379.4 0.525

79 1384.8 0.527

80 1390.1 0.529

81 1395.5 0.531

82 1400.9 0.533

83 1406.3 0.535

84 1411.7 0.537

85 1417.1 0.538

86 1422.5 0.540

87 1428 0.542

88 1433.4 0.544

89 1438.9 0.546

90 1444.4 0.548

91 1449.9 0.550

92 1455.4 0.552

93 1460.9 0.554

94 1466.5 0.556

95 1472 0.558

96 1477.6 0.560

97 1483.2 0.562

98 1488.8 0.564

99 1494.4 0.566

100 1500 0.568

101 1505.6 0.570

102 1511.3 0.572

103 1517 0.574

104 1522.6 0.576

105 1528.3 0.578

106 1534 0.580

107 1539.7 0.582

108 1545.5 0.584

109 1551.2 0.586

110 1557 0.589

111 1562.8 0.591

112 1568.5 0.593

113 1574.4 0.595

Temp.

Resistance

[°C]

[Ω]

114 1580.2 0.597

115 1586 0.599

116 1591.8 0.601

117 1597.7 0.603

118 1603.6 0.605

119 1609.5 0.607

120 1615.4 0.609

121 1621.3 0.611

122 1627.2 0.613

123 1633.2 0.616

124 1639.1 0.618

125 1645.1 0.620

126 1651.1 0.622

127 1657.1 0.624

128 1663.1 0.626

129 1669.1 0.628

130 1675.2 0.630

voltage [V]

Termina l

29 EN1Z-1035GE51 R0319

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Trademark Information

BACnetTM is a trademark of ASHRAE Inc.

ONWORKS, and Neuron are trademarks of Echelon

LON, L
Corporation registered in the United States and other
countries.

Manufactured for and on behalf of the Connected Building Division of Honeywell Products and Solutions SARL, Z.A. La Pièce, 16, 1180 Rolle, Switzerland by its Authorized Representative:

CentraLine
Honeywell GmbH
Böblinger Strasse 17
71101 Schönaich, Germany
Phone [phone]
Fax [phone]

[e-mail]

www.centraline.com

Subject to change without notice
EN1Z-1035GE51 R0319