56
Manual Diff
1.0 ~ 23.0°C
Only available to be viewed/changed if PIM DIP switch 1 is ON
N/A for Mode 3 high temp DHW i.e. PIM DIP switch 1 must be
set to OFF.
N/A
System
Purge Time
OFF,
0:20 ~ 20:00 min
Sets the length of system pump (P2) post purge i.e. pump run
on (only when Modbus Mode para = Temp or Rate and if PIM
DIP switch 3 is ON - Default DIP 3 setting is ON)
0:20 min
Glycol %
0 ~ 50%
Not used for MVB
0%
Ind DHW
Sensor S5
OFF, ON
Select ON if an indirect DHW tank sensor S5 is used in lieu of
an indirect DHW tankstat (only avail if Mode para = 2 or 3).
OFF
Ind Supply
Setpoint
300.0,
0.5 ~ 93.0°C
Indirect DHW tank target setpoint temp when a tankstat is used
in lieu of tank sensor S5 (only avail if MODE para = 2 or 3 and
Ind DHW Sensor S5 para = OFF)
82.0°C
(90ºC)
Priority Ovr
Timer
AUTO,
0:10 ~ 2:00 hr
Sets length of priority override time (only avail if Mode para = 3
or
if Mode para = 2 and Ind Priority Enable para is set to ON
2:00 hr
Modbus
Mode
Off, Monitor, Temp,
Rate
BMS Modbus operating mode (Temp = Temp control, Rate =
Rate control)
Monitor
Address
1 ~ 170
Modbus slave address (not avail if Modbus Mode para = OFF)
1
Data Type
RTU, ASCH
Modbus data type (not avail if Modbus Mode para = OFF)
RTU
Parity
None, Odd, Even
Modbus parity (not avail if Modbus Mode para = OFF)
Even
Baud Rate
2400, 9600, 19200,
57600, 115000
Modbus baud rate (not avail if Modbus Mode para = OFF)
19200
H Models
– Hydronic Heating and Combination Hydronic/Indirect DHW
Mode 1 (Type H Units Only) - Hydronic Heating Only
This mode selection is for hydronic heating systems with single or multiple water heaters (Maximum 4
water heaters) in primary/secondary piping configuration with or without Outdoor Air Reset (S4).
The system temperature is controlled by the System sensor (S3).
The Water Heater Pump (P1) runs during any call for heat.
The System Pump (P2) (if connected to the MVB) runs whenever the system is enabled for heating and
the outdoor air temperature is lower than the warm weather shut down (WWSD) temperature setting (if
utilized).
The Water Heater Pump (mandatory) and System Pump (optional)
are delayed “off” as user defined in
the
ADJUST
menu.
Fig 26: MODE 1
– Single Water Heater with Primary/Secondary Piping
Содержание 910500
Страница 69: ...69 Fig 36 Wiring diagram All MVB Models...
Страница 104: ...104 Fig 52 Closed Loop Water Sourced Heat Pump...
Страница 108: ...108 This page is intentionally left blank AQ0901093 Rev B March 2021...