Rheem Raypak MVB 503A Installation And Operation Manual page 35

Item Application
BOILER 1 All
TARGET H MODE 1, 2, 3
TANK SETP WH
TANK DIFF WH
MODE H MODE 1, 2, 3
SETPOINT H MODE 1, 2, 3
OUT START H MODE 1, 2, 3
OUT DESIGN H MODE 1, 2, 3
Boil START H MODE 1, 2, 3
Boil DESIGN H MODE 1, 2, 3
Boil MASS All
Cascade
Cascade Type
Master Only
Cascade
Cascade Delay
Master Only
Cascade
Cascade Alarm
Master Only
TARGET MAX H MODE 1, 2, 3
TARGET MIN H MODE 1, 2, 3
TARGET DIFF H MODE 1, 2, 3
DHW SENSOR H MODE 1, 2, 3
DHW DIFF H MODE 2, 3
IND SUPPLY H MODE 2, 3
DHW
H MODE 2
PRIORITY
PRI OVR H MODE 2, 3
BOIL PURGE All
SYS PURGE All
WWSD H MODE 1, 2, 3
UNITS All
MODBUS All
ADDRESS All
DATA TYPE All
BAUD RATE All
PARITY All
Range Description
Enable or Disable the operation of boilers in FT Bus. 1 is
ON <> OFF
enabled by default
RSET <> SETP RSET = Outdoor Reset, SETP =Setpoint
OFF, 50°F to 160°F
Tank set point temperature
(10°C to 71°C)
2°F to 10°F
Tank Differential temperature
(-17°C to -12°C)
1,2,3 Piping and application configuration.
50°F (66°C) to PIM Boiler target temperature while a heat demand is present for
value* setpoint operation
35°F to 85°F
Outdoor starting temperature - outdoor reset
(2°C to 29°C)
-60°F to 45°F
Outdoor design temperature - outdoor reset
(-51°C to 7°C)
35°F to 150°F Starting boiler target temperature when the outdoor
(2°C to 66°C) temperature is at outdoor start outdoor reset
70°F to 200°F Design boiler target temperature when the outdoor
(21°C to 93°C) temperature is at outdoor design outdoor reset
1<>2<>3 Thermal mass of the boiler
SEQ, PAR Cascade operation type
AUTO<> 0:10...10:00 Cascade Interstage delay before calling next boiler
ON <> OFF Cascade Alarm to all units in case of any unit presents alarm
100°F (38°C) to PIM
Maximum target system temperature
value*
OFF, 50°F to 190°F
Minimum target system temperature
(10°C to 88°C)
2°F to 42°F Differential for target system temperature
OFF <> ON Selects whether a DHW sensor is used for indirect DHW tank
2°F to 10°F
Differential for the target indirect DHW tank temperature
(-17°C to -12°C)
OFF, 50°F (10°C) to Target boiler temperature for the DHW heat exchanger during
PIM value* indirect DHW operation
Selects whether or not Indirect DHW priority is active during
OFF <> ON
indirect DHW operation
Au, 0:10hr to 2:00hr Sets the length of the indirect DHW priority override time
0:20min to 10:00min Sets the length of the boiler pump post purge
OFF, 0:20min to
Sets the length of the system pump post purge
20:00min
40°F to 100°F (4°C to The system warm weather shutdown temperature outdoor
38°C) reset
deg F <> deg C Show units using icons in display
OFF<>MNTR<> ModBus Operating Mode: Off, Monitor, Temp Control, Rate
TEMP<>RATE Control
1 to 247 ModBus slave address
RTU <> ASCI Modbus data type
2400<>9600<>19K2<>
57K6<>115K
NONE<>EVEN<>ODD
Table N. Setup/Adjust Menu
Default
ON
SETP
125°F (52°C)
3
1
180°F (82°C)
70°F (21°C)
10°F (-12°C)
70°F (21°C)
180°F (82°C)
1
SEQ
AUTO
ON
220°F 104°C)
50°F (10°C)
10°F (-12°C)
OFF
6°F (-14°C)
180°F (82°C)
OFF
1:00hr
20 seconds
20 seconds
70°F (21°C)
deg F
OFF
1
RTU
19K2
EVEN
35