Brochure

3
W A T E R B O I L E R C O N T R O L S
MODEL VOLTAGE DESCRIPTION/OPERATION
3200-Plus 120 VAC
(24 VAC output)
3250-Plus 120 VAC
Specifications Model 3200-Plus Model 3250-Plus
Burner Contacts 30 VA@24 VAC 7.4 FLA, 44.4 LRA@120 VAC
Circulator Contacts 5.8 FLA, 34.8 LRA@120 VAC 5.8 FLA, 34.8 LRA@120 VAC
Operating Range – Low Limit Off or 110°F - 200°F Off or 110°F - 200°F
Operating Range – High Limit 100°F - 220°F 100°F - 220°F
Operating Range – Differential Automatic – will vary between Automatic – will vary between
10° and 20° subtractive based on control 10° and 20° subtractive based on control
settings and boiler temperature settings and boiler temperature
•
Program Mode Options
• Manual Reset LWCO Option – Quickly set the LWCO in Manual Reset mode for commercial jobs
• Circulator Activation Options – Set TT, ZC/ZR or both to activate the circulator
• Thermal Pre-Purge Option – Enhance fuel efficiency by purging standing heat from the boiler to the zone
requiring heat prior to energizing the burner
• Enhanced Condensing Protection Option –
Reduce flue gas condensation by holding off the circulator allow-
ing the boiler to heat up more rapidly to a non-condensing temperature range
• Degrees Celsius Option – Change display and settings from degrees F to degrees C
Fuel Savings through Boiler Reset
Boiler Reset is the decades-old principle of governing boiler temperature in accordance with the heat-
ing demand. A boiler is sized to heat a home during the coldest days of the year. During all other times,
the heating system is larger than it needs to be. Boiler Reset saves fuel by reducing the boiler tempera-
ture during periods of non-peak demand. The FuelSmart HydroStat offers two cost effective ways to
provide this fuel saving technology:
Thermal Targeting
™
– This on-board microprocessor based algorithm monitors thermostat activity and
continually evaluates how much heat the house requires. When it is very cold outside, the demand for
heat is high and the Fuel Smart HydroStat raises the boiler’s Target Temperature to provide needed heat
to the house. When the outside temperature is milder, the demand for heat is lower. During these peri-
ods, the Fuel Smart HydroStat lowers the boiler’s Target Temperature – saving fuel – while continuing to
provide comfort to the house.
Outdoor Reset – For those who prefer the more traditional outdoor reset approach, Hydrolevel offers a
low cost OS-100 Outdoor Sensor Kit (sold separately, see page 6). When the sensor is plugged into the
control, the boiler reset methodology changes instantly from Thermal Targeting to Outdoor Reset, where
the boiler temperature is governed by the temperature outside. The addition of this sensor also allows
the Warm Weather Shutdown feature to be activated. This feature prevents the boiler from supplying
space heating when the outside temperature exceeds a selected level.
Universal replacement Aquastat with adjustable high and low temperature lim-
its for cold start or tankless coil boilers. Features built in low water cut-off
(when used with Hydrolevel Electro-Well
™
) and fuel saving boiler reset technol-
ogy. Outdoor Reset and Warm Weather Shut-Down capability can be added
with purchase of OS-100 Sensor Kit.