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Operational Settings
• Operation Mode parameter in ADJUST menu must be set to 3 (refer to
o
(82
C Max) - ADJUST Menu Settings
88).
• Heater A VERSA control board DIP switch 2 must be set to ON (Master). Heaters B, C and D VERSA
control board DIP switch 2 must be set to OFF (slave). Refer to Cascade System Connections on
page 77.
• Set MVB auto reset high limit switch to 93ºC (200ºF) on each
heater.
• The PIM operator setpoint dial on each heater MUST also be set to
the Pump C Controller thermostat setpoint temperature to prevent
an over temperature condition from occurring when operating in
limp mode.
H Models High Temp DHW (82ºC Max) - ADJUST Menu Settings
• 'Default' column shows factory default settings. Actual values will depend on installation. Required
(Rqd) values shown bracketed in bold must be used.
• 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
Fig 25: MODE 1 – Master/Slave with DHW >71
on page 55 for parameter settings and Adjust Menu on page
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)
Description
55
o
C
H Model High Temp DHW
Default (Rqd)
SETP
82.0°C
(10ºC)
1 (3)
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