55
Fig 25: MODE 1
– Master/Slave with DHW >71
o
C
Operational Settings
•
Operation Mode parameter in ADJUST menu must be set to 3 (refer to
on page 55 for parameter settings and Adjust Menu on page
•
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
Description
Default
(Rqd)
Operation
Mode
1, 2, 3
Selects heater operating mode
1
(3)
Target
Mode
SETP, RSET, EMS,
Modbus
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)
SETP
Target
Setpoint
10.0 ~ 115.0°C
Target setpoint (only avail if Target Mode para = SETP)
82.0°C
(10ºC)
