CTRLMax Manual

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CHAPTER 1
CHAPTER 1 - OPERATING INFORMATION
1.1. General
The ControlMax (CTRLMax) system control is designed
to be exible yet easy to use. It monitors and controls
the boiler to operate as eciently as possible. CTRLMax
monitors the appliance supply, return and ue gas tem-
peratures and operates the ignitor, gas valve and blow-
er. It uses this information to modulate the appliance
ring rate to maintain the required setpoint. CTRLMax
oers many advanced control options, which may be
adjusted for various applications to achieve optimum
appliance eciency and operation:
• Two central / space heating (CH) call inputs with
separate outdoor curves.
• A Domestic Hot Water (DHW) call input with op-
tional priority.
• System temperature sensing and control with an
optional system temperature sensor.
• A cascade function (Prestige and Instinct Solo appli-
ances only). It allows, for example, up to six boilers
to operate together in a single heating system.
• A Modbus interface for integrating with building
management systems.
Accessing the functions is done through the user inter-
face, that presents itself in two dierent versions:
1.1.1 PRESTIGE and HEATMASTER Control Panel
Description
1. CTRLMax LCD Display - It is the setup interface of
the appliance and indicates the parameter values, the
error codes and the set-up status of the parameters. It
displays a series of screens, each showing information
and/or icons.
2. Installer button - Allows the installer to open the ac-
cess code window of the CTRLMax controller and set
up the system once the code has been entered.
3. Arrow keys and OK key - To browse through
the screens of the CTRLMax controller, set up
the appliance, increase and decrease the dis-
played values and validate the selections.
The OK key is also used to RESET the appliance after
a blocking (following the instructions on the screen).
1.1.2 Main settings of the PRESTIGE and HEAT
MASTER CTRLMax Display
Screen backlight - it will illuminate when any key is
depressed, and remain illuminated for ve minutes.
Screen contrast - it can be adjusted at the Home screen
by pressing and holding the OK key, then pressing and
holding the LEFT key along with the OK key. Press the
UP and DOWN key to increase or decrease the contrast
while holding the OK and LEFT keys depressed. All keys
must be released and the procedure performed again
to switch between increasing and decreasing contrast.
Fig. 1 - PRESTIGE and HEATMASTER Control Panel
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