Rinnai EHP-HS004MR32-EX2, User'S And Installer'S Manual

Page: 67 / 180

67
99 M MEESSSSAA IINN FFU UNNZZIIO ONNEE
FOR SERVICEMAN is designed for the installer to
set the parameter.
•
Setting the composition of equipment.
•
Setting the parameter.
How to go to FOR SERVICEMAN
Go to MENU > FOR SERVICEMAN. Press OK
The terms related to this unit are shown in the
table below.
DDeessccrriippttiioonn ooff tteerrm mss
0 0 0
Parameter Illustration
T1
Water outlet temperature of the backup heater or
additional heating source (IBH and/or AHS)
Tw2
Flow water temperature for low-temperature zone
(only in case of 2-zone kit)
T1S Target outlet water temperature
T2
Temperature of refrigerant at outlet /inlet of
plate heat exchanger when in heat mode/cool
mode
T2B
Temperature of refrigerant at let outlet /inlet of
plate heat exchanger when in heat mode/cool
mode
T3
Temperature of tube at outlet/inlet of condenser
when in cool/heat mode
T4 Outside temperature
T5 Temperature of domestic hot water
Ta
Room temperature on the user interface (HMI)
Th Suction temperature
Tbt1
Temperature of the inertial storage (only for cascade
function)
T5_2 (Tbt2) Temperature of the additional DHW storage tank
Tsolar Water temperature of the thermal solar circuit
Tp Discharge temperature
TW_in Inlet water temperature of plate heat exchanger
TW_out Outlet water temperature of plate heat exchanger
AHS Additional heating source
IBH Electrical resistance backup
TBH Backup heater in the domestic hot water tank
Pe Evaporate/condense pressure in cool/heat mode
Use LLEEFFTT ,, RRIIGGHHTT to navigate and use DDoowwnn,, U Upp
to adjust the numerical value.
Press OK.
Every time the FOR SERVICEMAN menu is entered
and exited, the unit restarts with the start-up
countdown.
AAbboouutt FFO ORR SSEERRVVIICCEEM MAANN
DDHHW W M MO ODDEE SSEETTTTIINNGG
MENU > FOR SERVICEMAN > DHW MODE SETTING
Compressor
T5: DHW tank water temperature
T5S: DHW set temperature
Time
DHW
：
domestic hot water
DHW MODE SETTING typically consists of the
following:
•
DHW MODE: enable or disable the DHW mode
•
DISINFECT
:
enable or disable the disinfection
(Anti-legionella)
•
DHW PRIORITY
：
set the priority between
domestic hot water heating and space
operation.
•
PUMP_D: sets whether or not the recirculation
is controlled by the unit. If the pump is to be
controlled by the unit select YES. If the pump
is not controlled by the unit, select NON.
•
DHW PUMP PRIORITY TIME SET It is a
parameter that can be activated / not
activated. If activated, enable parameters: 1.17
t_DHWHP_RESTRICT and 1.18 t_DHWHP_MAX.
ddTT55__O
ONN sets the temperature difference between
the DHW setpoint (T5S) and the storage tank
temperature (T5) above which the heat pump is
activated in DHW mode
When T5S - T5
≥ = dT5_ON the heat pump
providing heated water to the DHW tank.
16. CASCATE SET
17. HMI ADDRESS SET
1.22 DHW FUNCTION
1.23 t_ANTILOCK
NO
60 S
DISINFECT
PUMP_D
PUMP_D TIMER
PUMP_D RUNNING TIME
PUMP_D DISINFECT RUN
Note: The heat pump exits the DHW mode when
T5> = T5S, or when T5> = at the operating limit
of the domestic hot water (T5stop). The latter
varies according to the outside temperature.
ddTT11SS55 sets the outlet temperature of the heat
pump exchanger (T1S) respect to the DHW
storage tank temperature (T5).
For DHW mode, the user sets the DHW setpont
temperature (T5S) on the main screen and
cannot manually set T1S.
T1S is set as T1S = T5 + dT1S5.
ATT. !! The default value of dT1S5 = 10
If the DHW set point (T5S) is> 55°C, modify the
value according to the following formula:
dT1S5 = 65°C - setpoint ACS (T5S).
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