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Modulex EXT Commercial Series
CHAPTER 8: Maintenance Schedule
OMM-0160_A
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PARAMETER
DESCRIPTION
ENTRY RANGE
DEFAULT
341
Pump: minimum control
(Minimum output pump modulation)
See Controls Manual OMM-0159 Section 6.4.3
0-10V
3V
313
Pump: maximum control
(Maximum output pump modulation)
See Controls Manual OMM-0159 Section 6.4.3
0-10V
10V
792
CH Maximum modulation
0-100%
100%
611
CH Parallel: maximum error
This is the maximum boiler outlet error that
disables the CH and DHW parallel operation.
Parallel operation of space heating/DHW is
deactivated (space heating secondary pump stops)
when boiler outlet temperature falls below Boost
Temperature Setpoint (Param. 660) by the amount
of Parameter 611.
0°F to 54°F
(0°C to 30°C)
Units may be expressed
in R or K
9°F (5°C)
612
CH Parallel: modulation maximum
This is the maximum firing rate that enables the
CH and DHW parallel operation; during parallel
operation, space heating secondary pump is
allowed to run while DHW demand is present;
0 = No parallel Operation
0-100%
0%
650
DHW: Minimum Setpoint
DHW setpoint must be set higher than the value of
Parameter 650.
77°F to 113°F
(25°C to 45°C)
95°F (35°C)
385
DHW: Maximum Setpoint
122°F to 149°F
(50°C to 65°C)
149°F (65C)
360
DHW: tank adjustment (tank
temperature regulation gain)
Leave this Parameter set = 0 for a constant boost
temperature (Param. 660) when DHW is present
0-15
0
656
DHW request: tank to target
temperature differential
• DHW demand is present when DHW outlet/tank
temperature falls below the DHW setpoint by the
amount of Parameter 656.
• DHW demand is satisfied
when DHW
outlet/tank reaches temp above DHW setpoint by
the amount [Param. 657 minus Param. 656]
-36°F to 36°F
(-20°C to 20°C)
Units may be expressed
in R or K
7°F (4C)
657
DHW: Requested Temp. Hysteresis
• DHW demand is satisfied when DHW
outlet/tank reaches temp above DHW setpoint by
the amount [Param. 657 minus Param. 656]
2°F to 36°F
(1°C to 20°C)
Units may be expressed
in R or K
14°F (8C)
310
DHW Pump Off Delay
5 - 600 sec
60 sec
660
DHW: Maximum Boiler Temperature
Boost temperature: When DHW demand is
present, Parameter 660 will be the boiler setpoint.
122°F to 212°F
(50°C to 100°C)
167°F (75C)
48
CH#1: setpoint
(CH maximum target temperature)
68°F to 221°F
(20°C to 105°C)
185°F (85C)
Содержание AERCO MLX EXT 1500 2S
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