NTI Triton VS80-130 Assembly, Installation And Operation Instructions page 20

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Triton
Installation and Operation Instructions - Installation Checklist
 LO TEMP:
o Minimum permissible boiler temperature, burner will fire without demand when temperature drops below
the LO TEMP setting.
o Controller inhibits circulator operation (120V outputs at C1 and ZC are deactivated) until the temperature
exceeds the LO TEMP setting.
o "Tankless Coil" – set LO TEMP to a minimum of 140ºF to obtain DHW priority. Remove jumper (see
HydroStat instructions) to permit LO TEMP settings in excess of 140ºF.
o Set LO TEMP at least 10ºF below HI TEMP setting.
o See "Setting the Low Limit" in the Hydrolevel installation instructions included with the HydroStat 3250.
 ECONOMY
o Establishes the Boost Interval and Subtractive Differential settings for Thermal Targeting; see Thermal
Targeting Method below.
o Establishes the Reset Ratio setting for Outdoor Reset operation: see Outdoor Reset Method below
o The higher the setting the greater the reduction in boiler operating temperature and fuel consumption.
o DHW with a tankless coil, ECONOMY should be set to "OFF".
o DHW without a tankless coil (Indirect Water Heater), ECONOMY is set in accordance with the
instructions provided under Thermal Targeting or Outdoor Reset Method.
 Thermal Pre-Purge
o When set to ON, the control will purge the boiler temperature down to 135
call before firing the burner. Display indicates "Pur" when control is in Thermal Pre-Purge mode.
o To set Thermal Pre-Purge ON, perform the following steps:
1. Turn the LO TEMP dial to "Pro".
2. Turn the HI TEMP dial to select feature 1.
3. Push the Test/Settings Button to turn Thermal Pre-Purge ON or OFF.
4. Reset LO TEMP and HI TEMP settings to desired temperatures.
 Zone / Indirect Switch
Determines the function of the ZC-ZR input.
o Switch = "Z" (Zone) – ZC-ZR demands are treated as central heat/thermostat demands; Thermal
Targeting and Pre-purge features are active.
o Switch = "I" (Indirect) – ZC-ZR demands are treated as DHW demands; Thermal Targeting and Pre-
purge features are overridden, boiler operates to the HI TEMP Setting.
o If ZC-ZR input is not used (i.e. nothing is wired to it), the Zone/Indirect Switch setting is irrelevant.
Outdoor Sensor - The outdoor sensor (p/n: 83604) is included in the burner kit, it must be
connected to the Fuel Smart HydroStat Control 3250 prior to setting up the control.
Warm Weather Shutdown (WWSD)
The Warm Weather Shutdown feature prevents the boiler from providing central heating when the outside
temperature reaches a level that you select. The boiler will still operate to satisfy a call for domestic hot water.
 Available settings range from OFF or 40°- 70°F (factory default = 70°F).
 To adjust the WWSD setting, press and hold the Test/Setting Button and simultaneously adjust the Economy
dial to the desired setting.
 To turn the feature off (allows space heating regardless of outdoor temperature), press and hold the Test/Setting
Button and simultaneously turn the Economy dial fully counter-clockwise. Release the Test/Setting Button.
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VS80-130
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F at the start of any thermostat