Ambirad SmartCom 3 User manual

2
INDEX Section
Technical Specifications
1.1 Operating Environment ------------------------------------------------------------------------------------- 3
1.2 Performance Specifications -------------------------------------------------------------------------------- 3
1.3 SC3MZ Multi Zone Electrical Specifications ----------------------------------------------------------- 3
Installation Instructions
2.1 Mounting the Control Assembly --------------------------------------------------------------------------- 4
2.2 General Wiring Specifications ----------------------------------------------------------------------------- 5
2.3 SC3MZ Version Wiring Connections -------------------------------------------------------------------- 6
Operating Instructions
3.1 Factory default settings ------------------------------------------------------------------------------------- 7
3.2 The Buttons ---------------------------------------------------------------------------------------------------- 7
3.3 The Settings button ------------------------------------------------------------------------------------------ 9
3.4 Setting the clock ---------------------------------------------------------------------------------------------- 9
3.5 Setting the Program (on/off times) ----------------------------------------------------------------------10
3.5.1 Copying the Programs -----------------------------------------------------------------------------------11
3.6 Setting the Modes--------------------------------------------------------------------------------------------12
3.7 Setting day and night temperatures ---------------------------------------------------------------------13
3.8 Setting the system OFF ------------------------------------------------------------------------------------14
3.9 Optional Passwords ----------------------------------------------------------------------------------------15
3.10 Checking the temperature -------------------------------------------------------------------------------16
3.11 Setting a temporary Holiday period -------------------------------------------------------------------16
3.12 Setting a temporary Overtime extension period ----------------------------------------------------16
3.13 Setting a temporary Vent period -----------------------------------------------------------------------16
3.14 Display messages -----------------------------------------------------------------------------------------17
3.14.1 Error message:- Lockout ------------------------------------------------------------------------------17
3.14.2 Exam period ----------------------------------------------------------------------------------------------17
3.14.3 Optimum Start and Optimum Stop ------------------------------------------------------------------17
3.14.4 Service hours ---------------------------------------------------------------------------------------------17
3.14.5 External Sensor fault indication ----------------------------------------------------------------------17
3.14.6 External Inputs -------------------------------------------------------------------------------------------18
3.14.6.1 External Input priority --------------------------------------------------------------------------------18
3.15 Network Controllers ---------------------------------------------------------------------------------------19
3.15.1 Operating the Master -----------------------------------------------------------------------------------19
Engineer Settings
4.1 Introduction ---------------------------------------------------------------------------------------------------20
4.2 Settings --------------------------------------------------------------------------------------------------------20
4.3 The Engineer Variables ------------------------------------------------------------------------------------20
Battery Cell information
5.1 Battery replacement ----------------------------------------------------------------------------------------25
5.2 Battery specification ----------------------------------------------------------------------------------------25

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In order to satisfy the increasing need for
higher efficiencies and to complement the
development of efficient heating systems
AmbiRad has upgraded their ‘SmartCom’ range
of controllers.
With a new larger, back lit screen and simpler
to operate with intuitive programming,
SmartCom³ provides cost effective energy for
small single heater installations through to large
Introduction
multi-zone applications requiring centralised
control. This operating manual gives simple
step by step instructions for both the end user
and commissioning engineer alike.
This control must be installed according to
the current Regulations and should include
full disconnection means and fusing appropriate
to the connected loads.
1 Technical Specifications.
1.1 Operating Environment
• Operating temperature range: 0º F to 104º F
• Operating humidity range: 0 to 90% RH.
• Control IP rating: IP30
• Pollution degree: II environment
• Control safety construction: class II
• Mains supply: 24Vac nominal, 20Vac to
28Vac actual.
• On board supply fuse: 1AT
• Rated impulse voltage: 2500V
1.2 Performance Specifications
• Operation is by Class A software and Type
1A action. Version U1
• The mains supply to the electronic circuit is
protected by a time delay fuse.
• Flame failure input: 24Vac nominal, 20Vac
to 28Vac actual. Presence of voltage
indicates flame failure.
• The burner reset relay output is either 24V
Live or Neutral which is selected by a
plug-in jumper.
• Remote volt-free switch outputs will be
24Vdc/5mA
• The built-in room temperature sensor has a
measuring range of 23.6º F to 94.6º F with a
resolution of 0.36º F.
• Temperature sensor readings can be offset
to allow for errors due to sensor tolerances
and location. NB Frost protection readings
are also affected by offsets.
Built-in and remote room temperature sensor.
Unless well ventilated, heat generated in the
controller may cause the built-in sensor to
over-read temperatures.
Remote duct temperature sensor.
1.3 SC3 MZ Electrical Specifications
The power supply is SELV isolated, therefore
low voltage wiring to the control does not need
to be mains level rated.
All relays except Vent
1 rating: 10A/24Vac resistive
2A/24Vac inductive
Vent 1 relay rating 10A/24Vac resistive
3A/24Vac inductive,
Power consumption: 5W
Communications
wiring:
Shielded twisted pair
Daisy-chain
configuration.
Belden 9841 (or
equiv) recommended.
Max length = 1650ft
0 – 10V signals Output impedance =
500 Ohm.
Max current drive
capacity = 5mA
Measuring range: 23.6 – 94.6º F.
Resolution: 0.36º F.
Untrimmed accuracy over
range: +/- 2.52º F.
Accuracy over range with
offset: +/- 1.08º F.
Measuring range: 50 – 140º F.
Resolution: 0.36º F.
Accuracy over range: +/- 5.4º F.

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2 Installation instructions.
2.1 Mounting the Control Assembly
The housing consists of a
two part plastic moulding
held together by four
screws.
• Remove the screws.
• Carefully lift the lid and
unplug the ribbon cable
from the power PCB
assembly situated in the
bottom of the case.
• A drilling template is provided to
enable the controller assembly to
be securely fixed to a solid
surface.
• It is recommended that the
controller is installed no
less than 5ft above the
floor level.
• The lid with display and
connecting ribbon cable
can be rotated through
180° therefore allowing the
controller to be positioned with
the wire entry to the bottom or the top
depending on the cable routing.
• Do not mount the controller on an
excessively warm or cold surface or where it
could be affected by direct sunlight or other
heat/cool sources.
• The mounting surface
should be non-conducting or
grounded and should
prevent access to the rear of
the control.
Note: The recommended minimum
mounting height only applies when
the internal sensor is used.
8 13/16”
7 7/8”
3 5/32”
5”

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Note: when used in dusty/contaminated
environments it may be necessary to locate
the SmartCom panel within an enclosure (or
locate panel remotely) and use an external
temperature sensor.
2.2 General Wiring Specifications
All wiring connections must be made by a
suitably qualified person.
When making connections to screw terminals
please ensure that no more than 1/4” of
insulation is stripped back and that no stray wire
strands escape.
Please refer to the following wiring connection
drawings and observe the note at the bottom of
each page referring to cable type and length.
Complete installation wiring instruction booklets
are supplied to suit individual heating
applications which can also be downloaded
from our website www.ambirad.com/us
It is important to read both the product
instructions and these control instructions to
ensure satisfactory operation.
Failure to follow these guidelines may result in
electrical interference or unsatisfactory
operation.
Warning
Important: All electrical work should be done by a qualified electrician in strict accordance with
the National Electrical Code ANSI/NFPA 70. or Canadian codes CSA C22.1

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Terminal No. Connection Wire capacity
41 Vent 1 relay input (¾ Hp/low fan) 12 Awg
40 Vent 1 relay output (¾ Hp/low fan) 12 Awg
7 Heat 2 relay input (2 stage) 12 Awg
8 Heat 2 relay output (2 stage) 12 Awg
9 Burner reset output 12 Awg
25 Vent 3 relay output (damper) 12 Awg
14 Vent 2 relay output (high fan) 12 Awg
5 Time relay output 12 Awg
6 Heat 1 relay output (1 stage) 12 Awg
1/L Live supply input 12 Awg
2/N Neutral supply input 12 Awg
10 Flame failure input 12 Awg
S/R0 Remote room temperature sensor ‘A’ 14 Awg
S/R1 Remote room temperature sensor ‘B’ 14 Awg
D0 Remote duct temperature sensor ‘A’ 14 Awg
D1 Remote duct temperature sensor ‘B’ 14 Awg
O0 Outside air temperature sensor ‘A’ 14 Awg
O1 Outside air temperature sensor ‘B’ 14 Awg
B1 Remote on input (BMS ON input) 14 Awg
B0 Remote common (output to BMS) 14 Awg
B2 Remote frost input (door interlock) 14 Awg
C2 Comms connection ‘A’ input/output (Networking) 14 Awg
C0 Comms connection ‘GND’ output (Networking) 14 Awg
C1 Comms connection ‘B’ input/output (Networking) 14 Awg
66 Channel 1, 0~10V output (GM44) 14 Awg
64 Channel 1 and 2 common output 14 Awg
20 Channel 2, 0~10V output (damper 14 Awg
2.3 SC3MZ WIRING CONNECTIONS
A terminal block is supplied to enable multiple
connections to B0/B2 as detailed in product
wiring connections. 0-10V outputs and remote
switch inputs should be connected by 18Awg
cable of maximum length 325ft. The remote
temperature sensor may be placed at a
distance of up to 325ft (maximum) from the
control unit, using shielded 18Awg cable to
improve noise rejection. Connect the shield to
terminal B0. Master-slave communication is by
shielded twisted pair cable, RS 485 compatible,
such as Belden 9841 (or Equiv). Maximum
overall system length is 1650ft. Connect shield to
B0 and C0. All sensor and signal wiring should
be kept separate from mains wiring to minimise
noise pick-up.
NEUT
LIVE
1/L 2/N 10 S/R0S/R1D0 D1 O0 O1 B1 B0 B2 C2 C0 C1 66 64 20 41407 8 925 145 6 !
! FUSE RATING
T

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Pressing the UNDO button, at any time will
cancel this operation.
The controller can operate in holiday
mode, with frost protection for a number
of days. When the holiday period
expires the controller returns to normal
operation. Pressing the UNDO button, at any
time will cancel this operation.
Pressing the CHECK TEMP button will
display the sensor (room) temperature
on the first press and the set (program)
temperature on the second press. The third
press will return the display to normal.
Pressing the LOCKOUT button will clear
a flame failure lockout. In order to reset
the lockout, press and release the
LOCKOUT button. After 10 seconds the
controller will return to normal operation. The
lockout warning and LED will continue to display
if the flame failure signal is cleared at source.
Note:
If no keypad action takes place for 60
seconds, the current selection is cancelled
and the display returns to day and time and
previously set operating mode.
* Exam Heating mode (EH) will appear only if
selected in the engineer functions.
The ten buttons have the following functions:
Press the + button to increase a value.
Press the - button to decrease a value.
Press the OK button to accept the value
and advance to the next display.
Press to cancel overtime, vent, exam*,
OFF and holiday modes or to cancel a
setting but save any previous changes.
Initialise and step through programming
modes.
Pressing the FAN ONLY button will
force the controller to operate Vent 1
relay regardless of the room
temperature while Heat relays are disabled.
Pressing the UNDO button, at any time will
cancel this operation.
Pressing the OVERTIME button in an
OFF period will initiate or extend the
day-time operation of the controller.
3.2 The Buttons
OFF time 16:30 Mon to Fri
(no further ON/OFF times set or weekends)
Program mode Auto
Control type Warm Air*
Sensor type Internal*
Night setback On*
Frost protection On*
Networking Off*
Pin protection Off*
* can be altered within Engineers settings if required.
3.1 Factory default settings
For speedy installation and ease of first
operation, the SmartCom³ is supplied from the
factory with pre-programmed default settings.
These are:
On / Day temperature 64°F
Off / Night temperature 41°F
ON time 08:00 Mon thru Fri
3 Operating instructions.

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3.3 The SETTINGS button
Pressing the SETTING button will scroll
through the user options in the following
sequence. Repeated pressing of this
button will loop these options round to the start.
Allows the user to set
the hour, minute, day,
month and year.
OK =yes SET =next
SET PROGRAM?
OK =yes SET =next
SET MODE?
OK =yes SET =next
SET TEMPS?
OK =yes SET =next
SET SYSTEM OFF?
OK =yes SET =next
SET CLOCK?
OK =yes SET =redo
Menu End
Th 09 : 30
AUTO ON
Allows the user to set
up to 3 time period per
day. Automatic copy
function available.
Allows the user to set
the operating relevant
mode to the application.
Allows the user to set
day and night
temperatures.
Allows the user to
switch all functions to
an OFF status.
press
press
press
press
press
press
press or
Th 09 : 30
AUTO ON

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3.4 Setting the Clock
Press the SETTING button till
SET CLOCK? appears in the display.
Press the OK button to change this user
mode.
Value to alter/confirm will start flashing.
OK =yes SET =next
SET PROGRAM?
follow ‘Setting the PROGRAM’ menu
Th 09 : 29
AUTO ON
+ or - then OK
SET Day Mo 09 : 29
+ or - then OK
SET Day Mo 09 : 29
+ or - then OK
SET Hrs Mo 09 : 29
+ or - then OK
SET Mns Mo 09 : 29
OK =yes SET =redo
Menu End
OK =yes SET =next
SET CLOCK?
repeat above procedure
Use the + button to increase the value.
Use the - button to decrease the value.
Press the OK button to accept the value
and advance to the next display.
Press the UNDO button to cancel setting
but save any previous changes.
Clock will automatically
compensate for US
daylight saving dates.
press or
press or
SET Mon 06 0918 --
+ or - then OK
SET Dat 06 0918 --
+ or - then OK
SET Yr 06 0918 --
+ or - then OK

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3.5 Setting the Programs
Press the SETTING button till
SET PROGRAM? appears in the
display.
Press the OK button to change this user
mode.
Value to alter/confirm will start flashing.
OK =yes SET =next
SET PROGRAM?
Use the + button to increase the value
in 10 minute steps.
Use the - button to decrease the value.
the value in 10 minute steps.
Press the OK button to accept the value
and advance to the next display.
Press the UNDO button to cancel setting
but save any previous changes.
+ or - then OK
Mo ON 2 17 : 30
+ or - then OK
Mo OFF 2 20 : 00
+ or - then OK
Mo ON 3 - - : - -
+ or - then OK
Mo ON 3 20 : 30
+ or - then OK
Mo OFF 3 22 : 00
OK =yes SET =next
Copy to Tu
OK =yes SET =next
Copy to Tu
follow copy function menu
follow copy function menu
+ or - then OK
SET Day Mo
+ or - then OK
Mo ON 1 08 : 00
+ or - then OK
Mo OFF 1 16 : 30
OK =yes SET =next
SET MODE?
+ or - then OK
Mo ON 2 - - : - -
OK =yes SET =next
Copy to Tu
follow copy function menu
follow ‘Setting the MODE’ menu
If the - button is
pressed at an unused
time slot “--:--”, the screen
advances to a further ON
time. The new ON time will
start flashing.
3 timeslots per day
(each timeslot includes
an on and off time) are
allowed.
Pressing the OK
button at an unused
time slot “--:--”, will display
the automatic copy function.
(see next page).
Press OK to copy day
settings.
Press SET to alter times for
that day.
press or
press or
press or