Install Instructions

53
10 Operating information (continued)
Installation & Service Manual
Installer adjustable parameters
To access the Installer Adjustable Parameter Menu, press
and hold the ENTER and DOWN buttons simultaneously
for five (5) seconds. Once pressed, the temperature unit’s
adjustment will be shown. Press the OK button to cycle to
other adjustment values. Once you have cycled through all of
the values, the new values will be saved.
Table 10C Installer Adjustable Parameters
Code Description
p01 Manual Reset High Limit
p02 Night Setback Offset
p03 Maximum Tank Set Point
p04 Pump Delay Time
Table 10B Temperature Parameter Settings
Code Description
Factory
Default
Min Max
p01
Manual Reset High Limit
Set Point
210 32 210
p02 Night Setback Set Point 0 0 90
p03 Maximum Tank Set Point 125 32 190
p04 HW Pump Delay 0:30 0:00 0:40:00
-- HW Temp 125 60 185
4. The day of the week (1 - 7) for that trigger will then appear
in the lower digits on the display (1 = Monday, 2 = Tuesday,
etc.,). Press the UP or DOWN buttons to change the day of
the week, then press the ENTER button.
5. The time for that trigger then appears in a 24 hour format
(for example, 2:00 PM = 1400), with the hours digits
flashing. Use the UP and DOWN buttons to adjust the
hours, then press the ENTER button.
6. The minutes digits will then start flashing. Press the UP
and DOWN buttons to adjust the minutes. If you are
finished programming all of the triggers, press and hold the
ENTER key for 5 seconds. Otherwise, press the ENTER
button once. The bottom digits will clear and the top
digits will show ON or OFF again. Go back to Step 2 of this
procedure.
Low water cutoff protection
The electronic control module uses sensing of both heat
exchanger supply and return temperatures. If the flow rate is
too low or either temperature too high, the control module
modulates and shuts the burner down. This ensures water
heater shutdown in the event of low water or low flow
conditions in the heat exchanger.
To turn the heater ON/OFF
To turn the heater ON, press the UP button and hold it for five
(5) seconds. To turn the heater OFF, press the UP button and
hold again for five (5) seconds.
Service mode
To control the modulation of the heater for troubleshooting
procedures, the Service Mode can be accessed by pressing the
ENTER and UP buttons simultaneously, holding them for five
(5) seconds. Once in the Service Mode, the UP and DOWN
buttons control the speed of the blower. To toggle between
the maximum and minimum speeds, press the ENTER button
momentarily. When ready to return to the normal state, press
the ENTER button for five (5) seconds. The control will also
leave Service Mode in the event of a lockout.
Error logging
To access the error log, press the DOWN button for five (5)
seconds. The error codes will be displayed beginning with the
most recent. The top number indicating the error number
starting with “1” being the most recent. The bottom of the
display will show the following information in two (2) second
intervals:
1. Error Code
2. Hour and Minute of the Error
3. Date of the Error
4. Year of the Error
To view the next error press the UP button. To pause the
information on the screen, press and hold the ENTER button,
when released it will skip to the next value. To leave the Error
Log Menu press and hold the DOWN button for five (5)
seconds.
Night setback
Access the Night Setback Menu by pressing the UP and DOWN
buttons simultaneously for five (5) seconds.
This feature allows the user to lower the tank set point at
certain times each week. The Night Setback Offset (see Installer
Adjustable Parameters, this page) determines how much the set
point is lowered. The times at which the set point is lowered
are controlled by seven (7) start triggers and seven (7) stop
triggers. Each trigger can be set to any time on any day. When
the internal clock (see User Adjustable Parameters, page 52)
reaches a start trigger, Night Setback will begin. When the
internal clock reaches a stop trigger, Night Setback will end.
When a start trigger and a stop trigger are programmed to the
same day and time, the stop trigger will have priority, so Night
Setback will not become active. (The default settings are all
set to the same day and time.) Use the following procedure to
adjust the triggers:
1. Press the UP and DOWN buttons simultaneously for five
(5) seconds.
2. The top digits on the display will show the trigger type. To
change from ON to OFF, or back, press the UP or DOWN
button, then press the ENTER button.
3. The trigger number will then appear. Press the UP
or DOWN buttons to change the trigger number you are
programming, then press the ENTER button.