HTP ELP-199 - Manual (Page 62)

62
LP-294 REV. 2.20.14
Pressing the ▼ or ▲ keys allows the Installer to view and/or adjust more data or return to the previous screen.
(NOTE: This is the final normal Boiler Configuration screen. The following are for Cascaded systems only.)
BOILER CONFIG 
Permit Boiler
Fixed mode
YES
This screen describes what the boiler will do in an emergency situation, e.g. when the
communication between boilers is lost. For example: This setting could be used in a 4 boiler
system to enable only 2 boilers to run in emergency mode, preventing overshoots. Options: YES =
The boiler continues to operate at the central heating fixed setpoint. NO = In emergency situations,
this boiler is switched off. Factory default is YES.
Pressing the ▼ or ▲ keys allows the Installer to view and/or adjust more data or return to the previous screen.
BOILER CONFIG 
Minimum Power
1 This screen is for Service purposes ONLY, and allows the installer to increase the minimum power
of the boiler from 1 to 30, where 1 represents the minimum heat load. Factory default is 1. Range:
1
– 30.
Pressing the ▲ key allows the Installer to return to the previous screen.
Table 26 – Installer Menu – Boiler Config Screens
C. CENTRAL HEATING SETTINGS
NOTE: These settings are not selectable in cascade mode at dependent boilers.
SCREEN DESCRIPTION
CH SETTINGS
CH mode 1
CH with thermostat and outdoor
reset 
Allows Installer to choose between different central heating modes. Options:
0 = CH with thermostat
1 = CH with thermostat and outdoor reset (This is the factory default)
2 = CH outdoor reset and T-night offset of
–18 o
F supply temperature (done by a timer connected at
the RT-Input with a potential free contact)
3 = CH with permanent heat demand
4 = CH with analog input for T-supply (for both single and cascaded boilers)
5 = CH with analog input for mod-rate (single boiler only)
6 = CH with hydro-air unit (single boiler only).
Factory default is 1.
Pressing the ▼ key allows the Installer to view and/or adjust more data.
CH SETTINGS 
Central heating
Differential
10
o
F
This screen allows the installer to set the central heating differential. Options:
(1) = The Differential to the setpoint for starting the boiler can be modified here. Default: 10
o
F.
Range: 2 – 27 o F.
(2) For CH-mode 6, the values are different, and depend on set point. The CH mode selected will
determine the default.
Pressing the ▼ or ▲ keys allows the Installer to view and/or adjust more data or return to the previous screen.
CH SETTINGS 
Reset Curve Design
Outdoor 5
o
F
Boiler 180
o
F
Allows the installer to set the upper point for the outdoor reset curve. At a specified low outdoor
temperature, a certain boiler supply temperature must be reached.
Default is 5
o
F outdoor, 180
o
F boiler. Range: 22 – 77 o
F, 61 – 200 o
F.
Pressing the ▼ or ▲ keys allows the Installer to view and/or adjust more data or return to the previous screen.
CH SETTINGS 
R.CurveMildWeather
Outdoor _68
o
F
Boiler 95 o F
Allows the installer to set the lower point for the outdoor reset curve. At a specified mild outdoor
temperature, a certain boiler supply temperature must be reached.
Default is 68
o
F outdoor, 95
o
F boiler. Range: 36 – 85 o
F, 36 – 121 o
F.
Pressing the ▼ or ▲ keys allows the Installer to view and/or adjust more data or return to the previous screen.
CH SETTINGS 
Mild Weather
Switch off Temp.
_68
o F
Allows the installer to set a higher outdoor temperature that will disable central heating during
summer months.
Default is 68
o F. Range: 36 – 95 o F.
Pressing the ▼ or ▲ keys allows the Installer to view and/or adjust more data or return to the previous screen.
CH SETTINGS 
CH Boost Function
Temp.Offs. _10
o F
BoostTime _20 min
Allows the installer to increase the supply temperature if the heat demand is not satisfied within a
certain boost time.
Default is 10
o F offset, with a boost time of 20 minutes.
Range: 0 – 36 o
F, 1 – 120 minutes.
Pressing the ▼ or ▲ keys allows the Installer to view and/or adjust more data or return to the previous screen.
CH SETTINGS 
Reset Curve Limits
Boiler Min 95
o
F
Boiler Max 180
o
F
Allows the installer to set limits for the outdoor reset curve by adjusting minimum and maximum
boiler supply temperature.
Default is 95
o
F minimum boiler temperature, 180
o
F maximum.
Range: 40 – 180 o
F, 81 – 200 o
F.
Pressing the ▼ or ▲ keys allows the Installer to view and/or adjust more data or return to the previous screen.
CH SETTINGS 
Anti-Cycling
Time _3min
End T-Diff _29
o
F
Allows the installer to set the boiler anti-cycling time and temperature differential. This prevents
temperature overshoot at small heat demand. It ends when the temperature difference to the
setpoint is higher than the set temperature value and the set time has elapsed.
Default is 3 minutes, 29
o
F differential. Range: 10 – 900 minutes, 1 – 36 o
F.