Hydrolevel 3250-Plus - Manual (Page 7)

Zone/Indirect Switch
NOTE: Settings can be checked using the
TEST/SETTINGS Button. See page 11 for details.
Setting the High Limit
The high limit is factory set at 190°F. To adjust, turn the HI
TEMP Dial Ạ until the desired setting is displayed. (Setting
range: 100°-220°F)
Setting the Low Limit
The low limit is designed to maintain temperature in boilers
equipped with tankless coils used for domestic hot water.
The low limit is factory set to OFF. Prior to adjusting, remove
the jumper (not equipped on all units) ạ . Then turn the LO
TEMP Dial Ả clockwise until the desired temperature is dis-
played. For proper operation, the low temperature limit set-
ting should be at least 10° below the high limit setting.
NOTE: For cold start operation, the low limit must be turned
OFF. IMPORTANT: If low limit temperature cannot be set
above 140°F, remove jumper ạ . (Setting range: OFF or
110°-200°F).
Setting the Economy Feature
The Economy Feature is factory set for a 1 zone heating sys-
tem. To adjust, turn the ECONOMY Dial ả until the number
displayed equals the number of heating zones. Do not
include indirect water heaters in the number of heating
zones. The Economy Feature conserves fuel by reducing
boiler temperature (see “How Thermal Targeting Works” on
page 8). If the heating system is unable to supply needed
heat to the house, the ECONOMY Dial should be turned to a
lower setting (example: In a three zone house, turn the dial to
2 or 1). Conversely, if the boiler provides adequate heat,
added fuel savings can be achieved by selecting a higher set-
ting (example: 4 or 5). If the heating and indirect water heater
signals were not separated when wiring the control, the
Economy Feature should be turned OFF to ensure the boiler
supplies adequate temperature to heat the indirect tank.
Setting the Zone/Indirect Switch
See WIRING on page 4-6.
7
SETTING THE CONTROL
Dynamic
Display
Water Temperature
and Real Time
Verification of
Setting Adjustments.
Low Temperature
Limit Setting
(OFF or 110°-200°F)
Factory OFF
High Temperature
Limit Setting
(100°-220°F)
Factory 190°F
Spade Connectors
for OS-100 Outdoor
Sensor Kit
Diagnostic LEDs
Ả
ả
Ạ
Economy Dial
(OFF or LO, 1, 2, 3,
4, 5, HI)
Differentials
are automatic
and will vary
based on
control settings
and boiler tem-
perature.
SETTING
Disables economy function. Will allow boiler to fire until hi-
limit temp is reached and re-fire with a 10° subtractive
differential.
Provides lowest level of fuel savings. Use this setting only if
the house does not stay warm at higher settings.
Recommended setting for single zone systems
Recommended setting for Two zone systems
Recommended setting for Three zone systems
Recommended setting for Four zone systems
Recommended setting for Five zone systems
Provides highest level of fuel savings
Indicator Light
(announces heat call)
Jumper ạ
Test/Settings Button
HydroStat 3250-Plus Instructions: HydroStat Instructions.8pg 11/14/13 3:43 PM Page 7