Camus Hydronics VTech 0499 - Part 7 - VTech Control Panel; 7.1 Levels of Access; 7.2 VTech Touchscreen Display; 7.3 Lockout;Alert Condition

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Part 7 – VTech Control Panel
The appliance is provided with a control panel at the front.
Operating controls are installed inside the control box and are
accessible behind the front enclosure. Diagnostic information,
setpoint and operational controls, as well as the on/off switch are
all accessible with the cover in place.
The controller initiates the local call for heat and sets the target
setpoint temperature. This controller offers a range of operation
modes which provides set point as well as modulating control. It
provides the following:
 Reading for inlet and outlet water temperatures.
 Reading for flame signal and fan speed.
 Records highest and lowest values for certain parameters.
 Operation as a manual reset high limit.
 Operation for inlet, outlet and system temperature control.
 Flame failure signal.
 Run time tracking and cycle count.
 JST and Molex connectors for ease of service.
 Error message display in text.
 Manual override of water heater input rate for combustion
setup.
7.1 – Levels of Access
The control has two levels of access to restrict menu and setting
adjustment to properly trained technicians.
 User – Access to general water heater and display settings
and adjustments to the setpoint. No code is required for this
level.
 Installer – Access to all user parameters and allows for
changes to additional parameters to allow for ease of startup
and serviceability. This level is unlocked by entering the
correct code into the control. Press the bottom left corner of
the home screen to enter the code.
7.2 – VTech Touchscreen Display
Touchscreen Display – Overview
The VTech control features a touchscreen display for parameter
adjustment, including setpoint, differential ON and OFF, high limit
adjustment, pre and post purge time adjustments, modulation
rate limiting, light-off firing rate, clock adjustment and Celsius or
Fahrenheit unit selection.
The VTech control also offers appliance monitoring, including top
and bottom sensors, flue temperature sensing, cycle count,
burner run time, firing rate, fan speed, flame signal, alarm
reporting, and manual firing rate control during product
commissioning.
On-Screen Control Navigation Buttons
Button
Description
To toggle parameters
To adjust parameter values
To confirm access to a menu
block
Default Control Home Screen
7.3 – Lockout/Alert Condition
If the unit is currently in either a lockout or alert/hold condition,
this will be displayed on the home screen.
WARNING
Lockout and alert conditions should not be cleared by anyone
who does not have adequate training on the appliance and the
meaning of the codes. Clearing lockouts and alerts without
rectifying the circumstance that caused the condition can
cause substantial property damage, severe personal injury, or
death.
If the ignition module is in a hard lockout, it may be necessary to
press the physical reset button on the module to clear the
lockout. Faults caused by manual reset safeties (i.e. High Limit,
Low Water Cut-off or gas switches) will also require a physical
switch be reset before the lockout can be cleared on the control.
Other faults are determined in the control logic and place the unit
into lockout because they require acknowledgement before
returning the unit to normal operation. When displayed with the
error description on the control screen, these faults will be
cleared by pressing the “ ” button.
Alert conditions do not deactivate the appliance, and
automatically clear when the conditions that caused the alert are
removed. However, the alert message will remain until on screen
until cleared. To clear an alert press “ ”.
IDLE
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