MERLIN NX Room Controller
Installation &
Commissioning
Instructions
® U.S. Registered Trademark
Copyright © 2020 Honeywell Inc. • All Rights Reserved EN1Z-1035GE51 R0420
GENERAL INFORMATION
Fig. 1. CLMERxxN (without optional covers)
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.
CAUTION
To avoid electrical shock or equipment damage, you
must switch OFF the power supply before attaching /
removing connections to/from any terminals.
Table 1. Overview of models
OS no.:
CLMER…
power
supply
AOs UIs BIs relays
(A
triacs
(B
total no.
of I/Os
remarks
large housing
(198 x 110 x 57.5
mm)
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
RL8N 230 VAC 6 6
(C
4
(D
4 4 24
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
small housing
(162 x 110 x 57.5
mm)
RS4N 230 VAC 4 4 0 4 2 14 24-hr data retention
RS5N 24 VAC 4 4 0 4 2 14 24-hr data retention
(A
See also section "Relay Outputs" on pg. 22.
(B
See also section "Triac Current Limitations" on pg. 22.
(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
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