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Honeywell CENTRA LINE MERLIN NX Series Installation & Commissioning Instructions page 26

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MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS
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 (
),
C
▪
heating (
), or
▪
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. 33). The "temperature" screen
appears first. The user can scroll to further screens ("heating /
cooling," "relative humidity," and "CO
the left ( ) or right ( ) arrow softkey.
NOTE: The user can, at any time, exit the expanded menu
using the upper left softkey (below the "
or the word "HOME") – or by simply waiting approx.
60 seconds.
In the expanded menu, the current temperature, relative
humidity, and CO
concentration can be displayed.
2
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 "
" symbol or the word "DONE"). If no
action is taken within this time, the given setting is auto-
matically confirmed.
EN1Z-1035GE51 R0420
H/C
).
AUTO
concentration") using
2
" symbol
" symbol or
"
CLCMTR42xx CONFIGURED
TO DISPLAY SYMBOLS
H/C
OFF
AUTO
2.0
°C
25.5
°C
ACTUAL
C
H/C
AUTO
%
41
%
CO
2
603
ppm
Fig. 33. Accessing the expanded menu
26
FLASHES 7 SEC!
C
H/C
AUTO
FLASHES 7 SEC!
C
FLASHES 7 SEC!
C
C

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