Watts AERCO Benchmark OMM-0121 Operation And Maintenance Manual page 76

Benchmark 750-3000 Boiler Operation & Maintenance Manual
APPENDIX A: BOILER MENU DESCRIPTIONS
TABLE A-3: CONFIGURATION MENU ITEM DESCRIPTIONS
See section 2-6 CONFIGURATION Menu for a range of choices and the default values.
The Configuration menu settings are Factory-Set in accordance with the requirements specified
with each individual order. No changes will be required under normal operating conditions.
TABLE A-3: CONFIGURATION Menu Item Descriptions
MENU OPTIONS
1 Internal Setpoint
2
Unit Type
3 Unit Size
4 Fuel Type
5 Boiler Mode
6 Remote Signal
7 Outdoor Sensor
8
Bldg Ref Temp
9 Reset Ratio
10
System Start Tmp
11 Setpt Lo Limit
12 Setpt Hi Limit
13
Temp Hi Limit
14 Max Valve Position
15 Pump Delay Timer
OMM-0122_D • GF-206 • 5/9/2019
Allows internal setpoint to be set from Lo Temp Limit of 40°F to
Hi Temp Limit of 240°F (4.4°C to 115.6°C).
Can be one of the following: BMK Blr Std, BMK Blr Std Dual,
BMK Blr LN, BMK Blr LN Dual.
Sets unit size, depending on the Unit Type:
750 MBH (220 kW), 1000 MBH (293 kW), 1500 MBH (439.6
kW), 2000 MBH (586.1 kW), 2500 MBH (732.6 kW), 3000 MBH
(879.2 kW)
Allows selection of Natural Gas or Propane.
Only available if Unit Type = Boiler. Allows selection of:
Constant Setpoint, Remote Setpoint, Direct Drive,
Combination, or Outdoor Reset Mode.
Only available if Mode = Remote Setpoint, Direct Drive or
Combination. Used to set the type of external signal which will
be used when operating in the Remote Setpoint, Direct Drive
or Combination Mode.
Allows outdoor sensor function to be set to Enabled or
Disabled.
Only available if Boiler Mode = Outdoor Reset. Allows the
building reference temperature to be set when operating a
boiler in the Outdoor Reset Mode.
Only available if Boiler Mode = Outdoor Reset. Permits setting
of Reset Ratio when operating boiler in the Outdoor Reset
Mode.
Only if Outdoor Sensor = Enabled. This menu item allows the
system start temperature to be set.
Used to set the minimum allowable setpoint, from 40°F (4.4
up to the Setpt Hi Limit.
Used to set the maximum allowable setpoint, from the Setpt Lo
Limit up to 210°F (98.9
°C)
This is the maximum allowable outlet temperature, up to 210°F
(98.9 . Any temperature above this setting will turn off the
°C)
unit. The temperature must then drop 5°F (2.75
setting to allow the unit to run.
Sets the maximum allowable valve position for the unit.
Specifies the amount of time, up to 30 minutes, to keep the
pump running after the unit turns off.
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
DESCRIPTION
.
°C)
below this
°C)
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