TREND 3RM-24VAC User Manual

Three Relay Module (24 Vac/dc)

IN0V 24V

AUTO ON OFFAUTO ON OFF

H
T

J2

J1

FAN/LOW

COOL/MID

RL1

RL2

NONC C NONC C

HEAT/HIGH

RL3

NONC C

AUTO ON OFF

J3

IN

0V24V

AUTO ON OFFAUTO ON OFF

H
T

J2

J1

FAN/LOW

COOL/MID

RL1

RL2

NONC C NONC C

HEAT/HIGH

RL3

NONC C

AUTO ON OFF

J3

Important: Retain these instructions

1 UNPACKING

Installation Instructions

3RM/24VAC

3RM/24VAC Installation
Instructions TG200647

2 STORING

It is recommended that the installation

-10 °C
(14 °F)

+70 °C
(158 °F)

H O

2

0 %RH

95 %RH

should comply with the HSE
Memorandum of Guidance on Electricity
at Work Regulations 1989.
For USA Install equipment in
accordance with National Electric Code.

3 INSTALLATION

Dimensions

1

13 mm
(0.51”)

IN 0V 24V

H
T

J1

RL1

FAN/LOW

NONC C NONC C

J2

RL2

COOL/MID

AUTO ON OFF AUTO ON OFF

68 mm (2.68”)

AUTO ON OFF

RL3

HEAT/HIGH

NONC C

J3

83 mm (3.23”)

48 mm (1.89”)

c

-10 °C
(14 °F)

0 %RH 90 %RH

H O

2

3RM/24VAC Three Relay Module (24 Vac/dc) Installation Instructions TG200647 Issue1/C 02/04/07

+50 °C
(122 °F)

2

a

IN

H
T

b

Requirements

0V24V

J1

J2

J3

AUTO ON OFFAUTO ON OFF

AUTO ON OFF

RL3

RL1

RL2

HEAT/HIGH

FAN/LOW

COOL/MID

NONC C NONC C

NONC C

This unit is UL rated
as ‘UL916 listed
accessory to open
energy
management
equipment.’

IN0V 24V

H

J1

T

J2

J3

AUTO ON OFFAUTO ON OFF

AUTO ON OFF

RL3

RL1

RL2

HEAT/HIGH

FAN/LOW

COOL/MID

NONC C NONC C

NONC C

1

3RM/24VAC Installation Instructions

T

3 INSTALLATION (continued)

Mount on DIN rail

3

0V 24V

IN

H
T

a

Specify Operating Mode

4

J1

J2

AUTO ON OFF AUTO ON OFF

RL1

FAN/LOW

NONC C NONC C

J3

AUTO ON OFF

RL3

RL2

HEAT/HIGH

COOL/MID

NONC C

(or binary switching)

b

Fan/Heat/Cool

HCM

H
T

3 Stage Sequence

TRM

H

Set AUTO/ON/OFF links to

5

AUTO

J2

AUTO ON OFF

RL3

HEAT/HIGH

NONC C

FAN/LOW

COOL/MID

J3

HEAT/HIGH

0V 24V

IN

H

J1

T

AUTO ON OFF AUTO ON OFF

RL1

RL2

FAN/LOW

COOL/MID

NONC C NONC C

Note that each link may be
replaced by a three position
(SPDT) switch which will
normally be centre off; this would
be wired as adjacent diagram
(see note step 15).

c

A U T O

A U T O O N O F F

O F F

A U T O O N

O N

O F F

6

Switch off IQ

Ensure IQ Output channel

7

is Analogue set to Voltage

IQ

O

I

2

A

B

C

D

1

6 7 8

2 3 4 5

3RM/24VAC Three Relay Module (24 Vac/dc) Installation Instructions TG200647 Issue1/C 02/04/07

D P

O K

1 7

2 0

1 8

1 6

1 9

LA N

TX R X

V

24 V

1 1

9 1 0

1 2

1 3

1 5

1 4

12 34 5 67 89 10

IQ

V

24 V

0 V

OUT

V

IQ Controller

Installation Instructions