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MODEL 3250-EKT
Temp Limit/LWCO Control
with Thermal Targeting
for Energy Kinetics
Ascent Combi
120 VAC Operating Voltage
PATENT NO. 8,931,708; 8,844,834;
7,891,572; others pending
Three Function
Design
Temperature Limit Control
Designed for cold start and tankless
coil boilers.
Low Water Cut-Off
Provides protection against potentially dan-
gerous low water conditions
when installed with the Hydrolevel
Electro-Well™ (see page 2 for details).
Boiler Reset Control
• Thermal Targeting – On-board micro-
processor adjusts boiler temperature
based on heating demand.
• Outdoor Reset Ready – Compatible with
Hydrolevel OS-100 Outdoor Sensor Kit
(sold separately) for outdoor reset and
warm weather shut-down functionality.
WARNING
Electrical shock hazard. To prevent electrical shock, death or
equipment damage, disconnect power supply before
installing or servicing control. Only qualified personnel may install or service this control in
accordance with local codes and ordinances. Read instructions completely before proceeding.
WARNING
Frozen pipes/water damage. Central heating systems are prone to shut down as a result of power or fuel outages,
safety related fault conditions or equipment failure. Installation of freeze protection monitoring or other precautions is recom-
mended for unattended dwellings in climates subject to sustain below-freezing temperatures.
126 Bailey Road • North Haven, CT 06473 • (203) 776-0473 • FAX (203) 764-1711 • www.hydrolevel.com
INSTALLATION INSTRUCTIONS
and OPERATING MANUAL
• Saves Fuel – Features Plate Warming, On Demand and Smart Learning
hot water modes as well as Thermal Targeting™ technology and Thermal
Pre-Purge capability for heating
• Outdoor Reset Ready – Provides Outdoor Reset and Warm Weather
Shut-Down capability with the addition of Hydrolevel OS-100 Outdoor
™
Sensor Kit (sold separately)
• Operating Indicators – LEDs, Dynamic Display and Test Button provide
continual and on-demand status checks
• Prioritizes Domestic Hot Water – Gives priority to calls from the hot water
flow switch
• Reduces Condensation – Condensation protection for reliable cold-start
operation for both heating and hot water calls
1
CAUTION
To prevent serious
burns, boiler
should be thoroughly cooled before installing or
servicing control.
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Table of Contents
Summary of Contents for Ascent HydroStat 3250-EKT
- Page 1 Sensor Kit (sold separately) for Energy Kinetics • Operating Indicators – LEDs, Dynamic Display and Test Button provide Ascent Combi continual and on-demand status checks • Prioritizes Domestic Hot Water – Gives priority to calls from the hot water 120 VAC Operating Voltage flow switch PATENT NO.
- Page 2 NOTE: If installing an Electro-Well, pipe sealing compound should be used. Teflon tape is not recommended. NOTE: In the case of space restrictions, the Ascent HydroStat control may be mounted in a horizontal orientation without any loss of function. Hydrolevel...
- Page 3 WIRING WARNING Electrical shock hazard. To prevent electrical shock, death or equipment damage, disconnect power supply before installing or servicing control.
- Page 4 WIRING WARNING Electrical shock hazard. To prevent electrical shock, death or equipment damage, disconnect power supply before installing or servicing control.
- Page 5 WIRING WARNING Electrical shock hazard. To prevent electrical shock, death or equipment damage, disconnect power supply before installing or servicing control. Zone valve end switches connect to T-T...
- Page 6 WIRING WARNING Electrical shock hazard. To prevent electrical shock, death or equipment damage, disconnect power supply before installing or servicing control.
-
Page 7: Setting The Control
SETTING THE CONTROL NOTE: Settings can be checked using the include indirect water heaters in the number of heating TEST/SETTINGS Button. See page 11 for details. zones. The Economy Feature conserves fuel by reducing boiler temperature (see “How Thermal Targeting Works” on Setting the High Limit page 8). -
Page 8: System Start-Up
With a ‘double pump,’ the hot water fixture can be left off and the boiler will preheat. The Ascent Combi is well insulated and will remain hot for over 2 hours after preheating, so after activated, the water will be ready for an extended period of time. -
Page 9: Optional Features
OPTIONAL FEATURES NOTE: The Program Mode – – is accessed by turning the LO TEMP dial to a position just above OFF. Thermal Pre-Purge Thermal Pre-Purge is designed to maximize boiler efficiency. When activated, the control will supply latent heat that may remain in the boiler from a previous run cycle to the heating zone that is now calling. - Page 10 OPTIONAL FEATURES continued High Limit Differential When the Economy feature is on, the control’s Thermal Targeting feature actively sets varying differentials based on system conditions. This option allows for selecting a 10, 20 or 30 degree fixed differential when the Economy feature is turned OFF. These optional differential settings are subtractive from the HIGH LIMIT setting.
- Page 11 (see page 2 for more details). LWCO ACTIVE Indicates that the low water cut-off (LWCO) function of the Ascent HydroStat is active. When the To View Current Settings: Press and release the control is installed with a Hydrolevel Electro-Well™, this LED Test/Settings Button in short intervals to sequentially display will be on at all times when the control is powered.
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Page 12: Maintenance
Pulsing warm water means the Ascent Combi is pre-heating. This takes about two minutes from cold start before hot water starts flowing continuously through hot water piping. Puls-... - Page 15 Electro-Well ™ When installed with the Hydrolevel Electro-Well™, Ascent HydroStat will provide both temperature and low water cut-off functionality. If the control was supplied by the boiler manufacturer, it was installed with an Electro-Well™. The Electro-Well™ is available sepa- rately for field installations.
- Page 16 OUTDOOR SENSOR KIT Hydrolevel’s optional Outdoor Sensor Kit automatically activates outdoor reset functionality and warm weather shutdown capability when plugged in to the Ascent HydroStat control. This low cost, easy to install kit is available separately at Hydrolevel distributors. Part No.
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