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HEAT-TIMER PRODUCT FINDER

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DIGI-SPAN® HWE-Elite & SEQ-3

Residential Hot Water Outdoor Reset Boiler and Motorized Valve Heating Controls

 

 

Overview

 

Simple affordable outdoor reset boiler and motorized valve controls for residential and small commercial applications. Now even smaller commercial properties and homeowners can enjoy the benefits of outdoor reset controls affordably and without complicated wiring or installation. Thanks to the new HWE-Elite and SEQ-3 Series. These controls can manage building temperature using outdoor reset, the most comfortable and efficient means of heat while providing fuel savings.

 

The HWE-SS is an outdoor reset boiler control with many built-in features. In addition to its single stage boiler reset capability, it has domestic hot water priority options. It can be used to operate a domestic hot water pump and change the boiler water temperature to satisfy domestic hot water demand.

 

The HWE-MOV is an outdoor reset motorized valve heating control. Primarily used in radiant application where it will modulate a 3-way valve to achieve better control of building heat. It offers boiler return protection where it will reduce the water temperature giong to the heating zone if it senses that he boiler return temperture was low. Thus, protecting the boiler from condensing and thermal shock.

 

The SEQ-3 is a multiple boiler outdoor reset control. It can operate up to 3 boilers or a 2-stage boiler (Lo/Hi). It has built-in domestic hot water priority.

 

Note: The HWE Elite series replaces the Heatrol HWM series controls
 
 

 

  • Built-In Outdoor Reset
  • Customizable Reset Ratios
  • Muliple controls that can fit every hydronic heating application
  • Built-in domestic hot water priority (DHW) control and priority (HWE-SS and SEQ-3)
  • Built-in boiler return monitoring and control (HWE-MOV)
  • Can be powered by 120VAC or 24VAC without the use of external transformers
  • Can be controlled remotely using an Enable/Disable input
  • Self diagnostics
  • Solid state sensors can be extended up to 500′ from the control
  • Accuracy of ±1ºF
  • All the HWE-Elite series controls are UL listed.
  • The HWE-Elite replaces the Heatrol controls series
  • UL Listed

 

 

MODEL CATALOG #
HWE-MOV Motorized Valve Hydronic Control 929180-00
HWE-SS Single On/Off Boiler Hydronic Control 929175-00
SEQ-3 Multi-Stage or Multi-Boiler Hydronic Control 929170-00
Digi-Elite Wiring Enclosure with a switch 929135-00
Digi-Elite Wiring Enclosure without a switch 929137-00

 

 

My hot water outdoor reset control is giving me too much heat. What should I do?

Check if the control has any of the following:

  • Reset Ratio and Offset – If excessive heat occurs only in certain weather conditions, adjust the Reset Ratio and Offset. If excessive heat occurs year round, reduce the Offset.
  • Boiler Mode Settings – The control will only operate boilers their mode is set to Auto or Standby. Check to if any boiler stage is set to Manual or On.
  • Multi-Stage Control Settings – The Last-Stage-Hold will allow only the Lead boiler to stay on for an additional number of degrees. If the setting is too high, and only the Lead boiler is on, the system can over heat. Reduce the Last-Stage-Hold setting.
  • Domestic Hot Water Call – On a DHW call, the System Set Point will rise to the DHW Set Point or 200°F. If the increase in temperature is during DHW call, see about using any of the DHW Priority options available on the control.

Why is my control not turning the boiler on even when there is a call for heat?

First, check the display for any messages as many of the heating controls have several external inputs that can be used to shutdown the boiler. If the message relates to the PROVE input, it may not be shorted or the Prove terminal Jumper is not installed. In this case, the control will not start the boiler. If the message relates to the Shutdown input, the Shutdown maybe shorted remotely. If the message relates to the T-stat input, the T-Stat input maybe opened remotely.

My outdoor sensor reading does not match the actual temperature.

The outdoor sensor measurement may vary based on its location and its sun exposure. In most cases it will never match a weather station that is located several miles away. most current Heat-Timer controls have a Trim feature which allows the sensor reading to be slightly modified just a few degrees to satisfy similar circumstances. If the difference was large, then check the sensor by disconnecting one of its wires from the control. The control should read OPEN. If not, contact technical support.

Why is my temperature sensor reading Open on the control display?

Remove the sensor wires from the control and check for continuity across the wires with and meter. If no continuity existed, check or replace the wires. if continuity did exist, then contact technical support.

Why is my temperature sensor reading Short on the control display?

Remove one of the sensor wires from the control. The control display should change and display OPEN. Then check the sensor wiring specifically around spliced areas. If wiring was good, then disconnect the sensor wires from the control and check the sensor wires with an Ohm meter. The readings should match the sensor temperature chart on the control manual. It not, then replace the sensor. If after removing one of the sensor wires the control read SHORT, then contact tech support.

How can the HWM 100 control be in night setback and morning boost for bypass at the same time?

The outdoor sensor measurement may vary based on its location and its sun exposure. In most cases it will never match a weather station that is located several miles away. most current Heat-Timer controls have a Trim feature which allows the sensor reading to be slightly modified just a few degrees to satisfy similar circumstances. If the difference was large, then check the sensor by disconnecting one of its wires from the control. The control should read OPEN. If not, contact technical support.

Why is my temperature sensor reading Open on the control display?

Question (continued): I have a 2500 sq. ft. house in which I installed a Heat-Trol (residential hot water reset control) Model 100. Sometimes my HWM 100 has both the green SETBACK and the yellow BOOST lights on.
When both the green and yellow lights are on in an HWM100, it signifies that the control is in a Domestic Hot Water Priority mode (it is neither in setback nor boost). In some installations, instead of heating the domestic hot water tank with a separate heat source, the hot boiler water is circulated through the tank to heat the domestic water. It is for these types of installations that the HWM Domestic Hot Water Priority is used. When the domestic tank needs heat, it signals the HWM. The HWM will activate the boiler, shut down the heating system pump (if it was giving heat at the time), and activate a pump to send the hot boiler water through the tank. Once the tank is warm enough, the HWM will either return to giving heat, or turn the boiler off if it warm outside. The Domestic Hot Water Priority is a standard feature of the HWM1O0, but can be disabled if not required.

Download the HWE-SS Elite in Google Sketchup 3D format by clicking here.

Download the HWE-MOV Elite in Google Sketchup 3D format by clicking here.

Download the SEQ-3 Elite in Google Sketchup 3D format by clicking here.

Download the Wiring Enclosure Elite in Google Sketchup 3D format by clicking here.