Heat Mode Setting - Ferroli OMNIA H Series Installation, Maintenance And User Manual

HEAT mode setting

HEAT MODE SETTING typically consists of the following:
1. HEAT MODE: to set if the HEAT mode is active or not
2. T1S RANGE: Selecting the range of target outlet water temperature
3. T4HMAX: Setting the maximum outdoor air operating temperature
4. T4HMIN: Setting the minimum operating outdoor air operating temperature
5. dTISH: Setting the temperature difference for starting the unit
6. t_INTERVAL_H: to set the compressor stop time before the next start in heat mode
To determine whether the HEAT mode is effective, go to
MENU> FOR SERVICEMAN> HEAT MODE SETTING.
Press OK. The following page be displayed:
When the cursor is on HEAT MODE, Use◄► to scroll to YES or NON and press OK to enable or disable the heat mode. When
the cursor is on the T1S RANGE, use ◄► to scroll to YES or NON and press OK to select the range of outlet water temperature.
When LOW is selected, the maximum target temperature is 55°C. If the climate-related curve function (corresponds to "weather
temperature set" in the user interface) is enabled, the curve selected is the low temperature curve. When HIGH is selected, the
maximum target temperature is 60°C. If the climate-related curve function (corresponds to "weather temperature set" in the user
interface) is enabled, the curve selected is the high temperature curve.
When the cursor is on T4HMAX,T4HMIN,dT1SH, dTSH or t_INTERVAL_H, Use ◄► and ▼▲ to scroll and adjust the parameter.
☞
NOTE
If HEAT MODE is set "NON", the function is not available and so could not be selected by the user.
T4HMAX is the maximum outdoor air operating temperature for
heat mode. The unit will not work if the outdoor air temperature is
higher.
T4HMIN is the minimum outdoor air operating temperature for heat
mode. The unit will turn off if the outdoor air temperature is lower.
The relationship between the operation of the unit and outdoor air
temperature can be seen in the picture below:
dT1SH is the temperature difference between T1 and T1S for
switch-off the unit in heat mode.
When the target outlet water temperature T1S<47, the unit will turn
on or off as described below :
When the target outlet water temperature T1S≥47, the unit will on
or off as described below:
dTSH is the temperature difference between Ta (Ta is the room
temperature) and TS for starting the unit when ROOM TEMP
is enabled in TEMP.TYPE SETTING (refer to10.7 Field setting/
TEMP.TYPE SETTING). Only when Ta drops to a certain value
will the unit turn on, and the unit will turn off if the Ta high enough.
See diagram below. (only when ROOM TEMP is enabled will this
function be available).
t_INTERVAL_H is the compressor start time interval in heat mode. When the compressor stops running, the next time that the
compressor turns on should be " t_INTERVAL_H" and one minute later at least.
34
SETUP OF THE SYSTEM
3 HEAT MODE SETTING
HEAT MODE
T1S RANGE
T4HMAX
T4HMIN
dTISH
SCROLL
OFF
HEAT
T4HMIN
T1S+dT1SH
HEAT
MIN(T1S+dT1SH,70)
HEAT
TS+dTSH
HEAT
YES NON
LOW HIGH
25°C
-15°C
5°C
T4
OFF
T4HMAX
OFF T1
OFF
T1
OFF
Ta