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• Set auto reset high limit switch to 90ºC (194ºF) on each heater.
• The PIM operator setpoint dial on each heater MUST be set to the
Indirect DHW Setpoint temperature to prevent a DHW over
temperature condition from occurring when operating in limp mode.
Mode 3 – ADJUST Menu Settings for Hydronic System with Indirect DHW
• 'Default' column shows factory default settings. Actual values will depend on installation. Required
(Rqd) values shown bracketed in bold must be used or not exceeded where 'Max' is shown.
• Parameters can only be changed if VERSA control board DIP switch 1 is set to ON (up).
• Some parameters are only available if controlling parameter/device is set as indicated in
'Description'.
Parameter
Range
Operation
1, 2, 3
Mode
Target
SETP, RSET, EMS,
Mode
Modbus
Target
10.0 ~ 115.0°C
Setpoint
Target
32 .0~ 110.0°C
Max
Target Min
10.0 ~ 82.0°C
Manual
Diff
1.0 ~ 23.0°C
(1)
System
OFF,
Purge
0:20 ~ 20:00 min
Time
Glycol %
0 ~ 50%
Ind DHW
OFF, ON
Sensor S5
Ind Supply
300.0,
Setpoint
0.5 ~ 93.0°C
Ind DHW
OFF,
Setpoint
10.0 ~ 82.0°C
Ind
1.0 ~ 5.0°C
Differential
Priority
AUTO,
Ovr Timer
0:10 ~ 2:00 hr
4.0 ~ 37.5°C
WWSD
OFF
Outdoor
1.6 ~ 29.4°C
Start
Outdoor
-51.1 ~ 7.2°C
Design
Boiler
1.6 ~ 65.5°C
Start
Boiler
21.1 ~ 93.3°C
Design
Selects heater operating mode
SETP = Setpoint
RSET = Outdoor Reset (outdoor air compensation)
EMS = Energy Management System (if PIM DIP switch 5 is
ON - Default DIP 5 setting is OFF)
Modbus only if Modbus Mode para = Temp or Rate)
Target setpoint (only avail if Target Mode para = SETP)
Max heating value for indirect DHW @ 10.0vdc input when
Target Mode para = EMS or Modbus
Min heating value for indirect DHW @ 1.0vdc input when
Target Mode para = EMS or Modbus
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
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)
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)
Indirect DHW target setpoint temp (only avail if Mode para = 2
or 3 and Ind DHW Sensor S5 para = ON)
Subtractive differential for Ind DHW Setpoint para i.e. 3° diff =
CFH at 3° below Ind DHW Setpoint and CFH end at Ind DHW
Setpoint (only avail if Mode para = 2 or 3 and Ind DHW
Sensor S5 para = ON)
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
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)
64
Description
Default
(Rqd)
1 (3)
SETP
82.0°C
(80ºC Max)
98.0°C
(82.0ºC
Max)
10.0°C
5.0°C
0:20 min
0%
OFF
82.0°C
60.0°C
(82ºC Max)
3°C
2:00 hr
21.0°C
21.1°C
-12.2°C
21.0°C
82.2°C
(80ºC Max)
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