Start-Up Procedures
42
If the “+” button is held in for 2 seconds
while in the
“
StBY
”
mode the CH sys-
tem (Parameter 3) will be turned OFF
and the display will show
“
cOFF
”
. Press
and hold the “+” button to turn the CH
system back ON, the display will show
“c” followed by CH set point tempera-
ture (Parameter 4) or CH target temper-
ature. If the “-” button is held in for 2
seconds while in the
“
StBY
”
mode
DHW system (Parameter 2) will be
turned OFF and the display will show
“
dOFF
”
. Press and hold “-” button to
turn the DHW system back ON, the dis-
play will show “d” followed by domestic
set point temperature (Parameter 1).
Setting The Control Parameters
Parameter Mode
To access PARAMETER mode when the sys-
tem is in STANDBY mode, press the MODE
button once.
To scroll through the list of parameters, simply
press the STEP button. To modify a parameter
value, use the “+” or “-” keys. Then press
STORE to save the value you just changed.
The display flashes once to confirm the data
has been saved.
To activate the parameters you changed, press
MODE once more (which brings you into
INFORMATION mode). However, if you do
not press a key, the system returns to STAND-
BY mode after 20 minutes and automatically
enables the changes.
Note 1:
This parameter is factory set to 140ºF.
It is important to note the control adds 46ºF to
this setting, to establish the operating limit dur-
ing a DWH call for heat
Note 2:
This parameter should not be changed
from the factory setting. The performance of
the DHW will be affected and can become
unreliable.
Note 3:
This parameter should not be changed
from the factory setting. The performance of
the CH (Central/Space Heating) will be affect-
ed and can become unreliable.
ARA
P
NOTICE
Domestic Hot Water Storage
Temperature Setting
(See Note 1)
Domestic Hot Water Setup
(See Note 2)
Space Heating Setup
(See Note 3)
Maximum temperature in space heating
(CH) mode. In applications using an
outdoor sensor, this is the boiler outlet
target temperature at an outdoor
temperature of 0 F or less
1.
2
140
01
01
8
1 6
ARA
3
4
P
.
.
.
.
MODE
STEP
STEP
STEP
STEP
Key:
Display
Key:
Display
Description of parameters
Pressing MODE once
