58
Manual Diff
(1)
1.0 ~ 23.0°C
Only available to be viewed/changed if PIM DIP switch 1 is
ON.
PIM DIP switch 1 should be set to OFF.
5.0°C
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%
WWSD
4.0 ~ 37.5°C
OFF
Warm weather heating shut down temp (only avail if Target
Mode para = RSET) Note: Indirect DHW CFH will override
21.0°C
Outdoor
Start
1.6 ~ 29.4°C
Outdoor reset start temp (only avail if Target Mode para =
RSET)
21.1°C
Outdoor
Design
-51.1 ~ 7.2°C
Outdoor reset design temp (only avail if Target Mode para =
RSET)
-12.2°C
Boiler Start
1.6 ~ 65.5°C
Starting heater target temp when outdoor temp is at Outdoor
Start temp (only avail if Target Mode para = RSET)
21.0°C
Boiler
Design
21.1 ~ 93.3°C
RSET target setpoint. Calculated when outdoor temp is as cold
as Outdoor Design temp (only avail if Target Mode para =
RSET)
82.2°C
(80ºC Max)
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
(1)
Split differential for hydronic Target Setpoint e.g. 5.0°C diff = CFH at 2.5°C below Target Setpoint &
CFH end at 2.5°C above Target Setpoint (only available to be viewed/changed if PIM DIP switch 1 is
ON otherwise hydronic differential is 12°C split (6°C above/below setpoint) and parameter is not
displayed
– Default DIP 1 setting is OFF).
Mode 2 (Type H Units Only)
– Hydronic Heating with Indirect DHW on the System Loop
on page 59.
This mode selection is for hydronic heating systems with single or multiple water heater (Maximum 4
water heaters) in primary/secondary piping configuration with or without Outdoor Air Reset (S4) with
indirect DHW on the
system loop
(with or without priority). The system temperature is controlled by the
System sensor (S3). The Indirect DHW sensor (S5) determines the indirect tank set point.
The system temperature is boosted by 20 ~ 50% during an indirect call for heat (depending on Indirect
DHW setpoint value) to facilitate faster heating of the indirect DHW tank.
Priority mode toggles off the System Pump (P2) when an indirect call for heat is present. The Water
Heater Pump (P1) runs during any call for heat.
The Indirect DHW Pump (P3) runs during an indirect call for heat with
no “off” delay.
The Water H
eater Pump (P1) and System Pump (P2) delay “off” as user defined in the
ADJUST
menu.
The System Pump (P2) runs whenever the system is enabled for heating and the outdoor air
temperature is lower than the WWSD temperature setting (if utilized) unless an indirect call for heat is
present with priority.
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...