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Manual Diff
1.0 ~ 23.0°C
(1)
OFF,
System
0:20 ~ 20:00
Purge Time
min
Glycol %
0 ~ 50%
4.0 ~ 37.5°C
WWSD
OFF
Outdoor
1.6 ~ 29.4°C
Start
Outdoor
-51.1 ~ 7.2°C
Design
Boiler Start
1.6 ~ 65.5°C
Boiler
21.1 ~ 93.3°C
Design
Modbus
Off, Monitor,
Mode
Temp, Rate
Address
1 ~ 170
Data Type
RTU, ASCH
None, Odd,
Parity
Even
2400, 9600,
Baud Rate
19200, 57600,
115000
(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
Refer to
Fig 28 and 29
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 Heater 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.
Only available to be viewed/changed if PIM DIP switch 1 is
ON.
PIM DIP switch 1 should be set to OFF.
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)
Not used for MVB
Warm weather heating shut down temp (only avail if Target
Mode para = RSET) Note: Indirect DHW CFH will override
Outdoor reset start temp (only avail if Target Mode para =
RSET)
Outdoor reset design temp (only avail if Target Mode para =
RSET)
Starting heater target temp when outdoor temp is at Outdoor
Start temp (only avail if Target Mode para = RSET)
RSET target setpoint. Calculated when outdoor temp is as cold
as Outdoor Design temp (only avail if Target Mode para =
RSET)
BMS Modbus operating mode (Temp = Temp control, Rate =
Rate control)
Modbus slave address (not avail if Modbus Mode para = OFF)
Modbus data type (not avail if Modbus Mode para = OFF)
Modbus parity (not avail if Modbus Mode para = OFF)
Modbus baud rate (not avail if Modbus Mode para = OFF)
on page 59.
58
5.0°C
0:20 min
0%
21.0°C
21.1°C
-12.2°C
21.0°C
82.2°C
(80ºC Max)
Monitor
1
RTU
Even
19200
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