Table of Contents
Advertisement
VS80-130
Fuel Smart HydroStat Model 3250-Plus
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 Triton models.
Temperature Limit – In lieu of the HydroStat 3250 the Honeywell Aquastat models L7224A, L7224U or
L8124A can be used on Triton boilers.
Low Water Cut Off (LWCO) - The HydroStat 3250, when installed in a Triton boiler,
cannot be used as a LWCO due to it's location in the boiler; therefore, a standard
immersion well is factory supplied with the unit. If a LWCO device is required, an
external LWCO must be field installed to provide protection against firing with low
water levels. Failure to follow these instructions may result in fire, serious injury or
death.
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.
Cold Start Will Void Warranty - Upon power up to the control, increase the LO TEMP
setting to a minimum of 120
start boiler and void the warranty.
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 7-3 HydroStat 3250 Control Settings
Parameter
HI TEMP
LO TEMP
ECONOMY (Thermal Targeting)
ECONOMY (Outdoor Reset)
Thermal Pre-Purge
Warm Weather Shutdown (WWSD)
Zone/Indirect Switch
Notes:
1 – LO TEMP must be set at least 10ºF below HI TEMP.
2 - Set HI TEMP based on the heating system's temperature demands, i.e. high = fined-tube baseboard, low = infloor
radiant.
3 - Set LO TEMP higher to have quicker response to domestic hot water loads.
4 - To set LO TEMP higher than 140
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)
Installation Checklist - Installation & Operation Instructions
o
F. Failure to do so will permit the unit to operate as a cold
Default
Setting w/ Tankless Coil
190ºF
OFF
1
1.00
OFF
70ºF
I
o
F, remove the jumper. Refer to instructions included with the HydroStat 3250.
Setting w/o Tankless Coil
160-210ºF
140-190ºF
OFF
See Thermal Targeting
OFF
See Outdoor Reset
OFF
70ºF
See Zone/Indirect Switch section
│
Triton
140-210ºF
120-140ºF
ON
70ºF
17
Advertisement
Table of Contents
