Page 30
WARNING
Dry your hands before removing the cover and
touching the Dials or the Mode button. ALWAYS
place the cover back into it's original position when
you have completed your adjustments.
If you are the installer
and have completed the
installation (SECTIONS 1 thru 7 of this manual), the
next step is to determine if your installation includes
any of the
above listed items.
If Yes, then you will
need to read THIS SECTION thoroughly and familiarize
yourself with the Digital Dashboard. See Figure 32.
Once you understand SECTION 8.A and you are
familiar with the 3 dials and the Mode button, THEN
continue to 8.B "Advanced Programing" on page 32
If the boiler has been installed
and you want to
adjust the HI LIMIT or the ECONOMY settings. Read
SECTION 8.A.2 and 8.A.3 on this page. Be sure that
you have a full understanding of what the Economy
dial does before you move away from the Default
setting of (1)
Under the removable clear cover, there are three
(3) dials and one (1) button. (See Figure 32)
The green digital display in the middle shows the boiler
outlet temperature.
SECTION 8
THE DIGITAL
DASHBOARD
Figure 31. Remove the cover to make adjustments.
(always re-position the cover when done)
8.A Getting to know the Digital Dashboard.
NOTE: Most installations will not require setting
anything within the Digital Dashboard.
The reasons for lifting the small transparent
cover and adjusting the control are:
- Setting the low water cut-off to manual reset.
- Adjusting high limit to anything other
than 190
°
F / 88
°
C.
- Installing an outdoor sensor for the purpose
of setting the Reset Curve.
- Changing the temp readout from Fahrenheit to
Celsius (or back to Fahrenheit).
- To change the economy settings.
8.A.2 The HI LIMIT Dial
(Program Select)
The high limit is factory set at 190ºF. To adjust, turn
the HI TEMP dial until the desired setting is displayed
(Range: 160ºF - 220ºF). Best operating range is 180ºF
- 200ºF.
8.A.3
ECONOMY
Dial
(no outdoor sensor needed)
IMPORTANT NOTE: The Economy feature can be
turned OFF ONLY FOR SERVICING
of the boiler
and cannot be left in the OFF position UNLESS AT
LEAST ONE OF THE FOLLOWING CONDITIONS
IS TRUE:
•
Control is functioning in Reset Ratio Mode. See 8.C.3
• An external energy management system is installed
that reduces the boiler water temperature as the
heating load decreases.
• This boiler is not used for any space heating.
• This boiler is part of a modular or multiple boiler system
having a total input of 300,000 BTU/hr or greater.
The Economy feature is factory set at one (1). See
Figure 34 on page 35. Economy Mode (Thermal
Targeting) works without need of an outdoor sensor.
For most installations in colder northern regions, the
Economy dial will be set to 1 or 2. If this installation is
in a warmer climate and in a highly efficient home with
a sufficient system of heat emitters, then the settings of
3 or higher can be used. The control is designed with
algorithms that keep track of the time intervals between
the calls for heat (the boost intervals) and system
temperature that is needed to achieve all of the heat
demands (the boosted temperature). For more detail
please see "Advanced Programing" on page 32
8.A.1
The
LO LIMIT
Dial
(Advanced Programing)
This efficient hybrid copper/cast iron heat exchanger
does not require a low limit setting, so 'LO LIMIT' has
been disabled from the programing. This dial does
still have it's secondary functionality for Advanced
Programing. See Section 8.B on page 32.
LAARS Heating Systems
