Odyssey
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Installation and Operation Instructions - Field Wiring
CT80-250
30
Fuel Smart HydroStat Model 3250
The Fuel Smart HydroStat 3250-Plus is manufactured by HydroLevel Company. It is a Temperature Limit and
Reset Control for oil and gas fired boilers. It meets the September 2012 requirements for “Automatic Means” of
adjusting boiler temperature. The HydroStat provides only temperature and reset functionality when installed on a
standard immersion well used on Caprice models.
Temperature Limit – In lieu of the HydroStat 3250 the Honeywell Aquastat models L7248A, L7224U or
L8148A can be used on Odyssey boilers.
Low Water Cut Off (LWCO) - To take advantage of the HydroStat’s LWCO feature, the
Odyssey is equipped with a special immersion well call the Electro-well™. Failure to use
the Electro-well™ provided with the boiler will over-ride the LWCO feature and allow
the boiler to operation during low water conditions which may result in over heating, fire, serious injury, or death.
Verify LWCO is Active - Ensure the LWCO active light is illuminated on the HyrdroStat
3250 when using the Electro-well™. If the indicator light is not illuminated than the
LWCO feature is not active. Refer to manufacturer’s instructions included with the HydroStat 3250.
Infloor Radiant Heating Applications - When the heating system incorporates low
temperature radiant heating, external mixing controls must be used to regulate the
temperature. Failure to follow these instructions may result in property damage.
HydroStat 3250 - For complete installation details and instructions on controls operation,
refer to the manufacturer’s instructions included with the Fuel Smart HydroStat 3250.
Table 9-3 HydroStat 3250 Control Settings
Parameter
Default
Recommended Settings
HI TEMP
190ºF
140-210ºF
LO TEMP
OFF
OFF
ECONOMY (Thermal Targeting)
1
See Thermal Targeting Method
ECONOMY (Outdoor Reset)
1.00
See Outdoor Reset Method
Thermal Pre-Purge
OFF
ON
Warm Weather Shutdown (WWSD)
70ºF
70ºF
Zone/Indirect Switch
I
See Zone/Indirect Switch
General Notes:
1 – LO TEMP must be set at least 10ºF below the HI TEMP.
2 - Set HI TEMP according to temperature demands of the heating system, high for fined-tube
baseboard or low for infloor radiant.
Control Settings
HI TEMP:
o
Setting establishes the maximum boiler operating temperature for safety (burner will not operate
above this setting).
o
Do not set greater than 210ºF.
o
With Zone/Indirect Switch set to “I”, boiler operates to the HI TEMP setting during a ZC-ZR demand
(DHW- Indirect Tank)
