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12
Operating information
Freeze protection (continued)
Neither this feature nor the water heater control module
eliminates the possibility of freezing. The installation must still
use recognized design, installation, and maintenance practice to
prevent freeze potential for the appliance and system.
The Freeze Protection feature will not work if the appliance
does not have power, is locked out, is in shutdown mode, had a
component failure, or is otherwise prevented from firing.
When
NOTICE
are maintained below the dew point,
condensation will form on the inside of the
appliance jacket causing some internal sheet
metal components to rust.
Monitor external limits
Connections are provided on the connection board for external
limits such as flow switch, gas pressure switches, and a louver
proving switch. The SMART TOUCH will shut off the burner
and inhibit relighting whenever any of these external limits
open.
Runtime and alarm outputs
The water heater provides dry contacts for indicating when the
water heater is running, and when it is unable to operate.
Runtime and cycle counting
The control uses a timer to monitor the total hours of burner
operation. The timer monitors the time the water heater is
firing.
The control uses two (2) ignition counters to monitor the
amount of water heater cycles. The first counter counts all
ignitions of the control. The second counter counts only
ignition attempts that have failed.
Service reminder
The control can be programmed for service reminder
notification. This notification will become active when either
a set amount of time has expired, or a set amount of running
hours or cycles has expired (all adjustable by the installer).
The display will show a Maintenance Required screen. The
installer's name and phone number can be programmed into
the control. This information will appear on the Maintenance
Required screen. The service reminder notification can be reset
or disabled by the installer.
The time dependent feature has been disabled by the
manufacturer. To enable this feature change the parameter to
the desired time interval, reference the Armor Service Manual
for details regarding parameters.
Error logging
The control will hold in memory the last 10 lockouts as well as
the last 10 blockings. The date and time of the occurrence will
be recorded as well. Only the 10 most current occurrences of
each will be held in memory.
64
system
return
temperatures
Installation & Operation Manual
Water heater temperature regulation
Operating temperature (target)
The SMART TOUCH control module senses water temperature
and regulates water heater firing and firing rate to achieve a
target temperature. The target temperature can be set between
60°F and 190°F.
High limit operations
The Armor water heater is equipped with a fixed automatic
reset high limit and an adjustable manual reset high limit. The
automatic reset high limit has a set point of 200°F and the
manual reset high limit has a maximum set point of 210°F.
When the outlet temperature exceeds 200°F, the automatic high
limit action occurs. The water heater shuts down until the outlet
water temperature cools below 190°F, and a 60 second timer has
expired. If the outlet temperature continues to increase, the
manual reset high limit action will occur at 210°F.
High limit test procedure
1.
Turn ON the main power to the appliance by placing the
ON/OFF switch in the ON position.
2.
Navigate to the Setpoints Screen.
3.
Use the slide bar to decrease the MRHL temperature
below the current outlet temperature or to its minimum
setting, whichever is higher.
4.
Press the APPLY CHANGES button to save the setting.
5.
If the current outlet temperature is above the MRHL
setting then the MRHL will function, causing a appliance
lockout. If the outlet temperature is below the MRHL
setting, navigate to the Service Screen and place the
appliance in service mode at full fire.
6.
Once the outlet temperature rises above the MRHL
setting, the MRHL will function causing a appliance
lockout.
7.
Repeat steps 2-4 to set the MRHL to the desired setting
for normal operation.
Low water cutoff protection
1.
The SMART TOUCH control module uses temperature
sensing of both supply and return areas of the heat exchanger.
If the flow rate is too low or the outlet temperature too high,
the control module modulates and shuts the water heater
down. This ensures water heater shutdown in the event of
low water or low flow conditions.
2.
Some codes and jurisdiction may accept these integral
features of the control in lieu of requiring an additional
limit control or low water cutoff. Consult local jurisdiction
to determine. A low water cutoff is available from the
factory.
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