What to do if HBX Computer Hardware has no boiler heat demand when zone module calls for heat?
If your HBX Computer Hardware shows no boiler heat demand when the zone module is calling for heat, ensure you program 'Use Zone Module' to 'Y' in Control Options. Note that Zone Modules are currently under development.
Why can't I select more than 4 boilers in staging options for HBX Computer Hardware?
If you are using the DHW control type with your HBX Computer Hardware, the maximum number of boiler stages is limited to 4. Staging and Mixing control types will allow programming up to 14 stages, provided you have the corresponding number of Expansion Modules.
How to fix lack of heat or no response to a heat demand in HBX Computer Hardware?
If your HBX Computer Hardware lacks heat or doesn't respond to a heat demand, the control may be in Warm Weather Shut Down mode. Check the 'Change Designs' menu under WWSD; the factory default is 75ºF. Adjust this according to your design parameters. Also, ensure your outside temperature sensor is installed away from direct sunlight or potential heat sources.
General| Brand | HBX |
|---|---|
| Model | CPU-1000 |
| Category | Computer Hardware |
| Language | English |
Describes requirements for qualified installers.
Mentions it's not a safety control.
Covers checking contents and proper storage.
Explains different safety icons and their meanings.
Details electrical inputs, relays, and communications.
Covers weight, size, and certifications.
Explains the labels on the unit.
Describes the display and lockable keypad.
Details the function of A, B, C, D buttons.
Covers serial number, communication port, power input.
Details demand inputs, thermistor inputs, and relays.
Elaborates on unit identification labels.
Provides more information on the communication port.
Describes the function of pump and auxiliary relays.
Details main power connection and backup battery.
Explains inputs for heat, DHW, and thermostat signals.
Describes connections for boiler, system, and outdoor sensors.
Details pump and miscellaneous relay connections.
Specifies the 120VAC power supply connection.
Covers unit placement and environmental protection.
Details fuse/breaker ratings and wire gauge.
Advises on wire type and conduit separation.
Details wiring for control inputs and sensors.
Explains connections for output relays.
Specifies the main 3-wire power connection.
Warns against applying power to sensor terminals.
Describes the graphic display capabilities and icons.
Details the information shown on the main display.
Shows the display with flow proof feature.
Explains how buttons A, B, C, D are used.
Describes moving through options and entering values.
Details how to secure and release programming menus.
Lists viewable data like Boiler Temp, System Temp, Setpoints.
Covers display, testing, and zone module settings.
Details staging, pump, and purge settings.
Covers injection type, design temperatures.
Details settings for setpoints, setbacks, and domestic setup.
Describes boiler and system graph settings.
Describes integrated expansion modules and their connections.
Lists part numbers for universal and indoor/outdoor sensors.
Explains adapter plugs and color-coded connectors.
Provides guidance on sensor installation location.
Addresses problems like no display or no heat.
Covers injection not working and parameters not taking effect.
Addresses boilers not staging and DHW not coming on.
Covers issues with boiler staging limits and shutdown modes.
Explains AI, Aquastat, Thermostat, Thermistor.
Defines Closed Loop, Open Loop, Mixing Valve, Modulating Valve.
Explains PID, PWM, WWSD, Zone.
Explains how PMI uses PID for pumps and valves.
Illustrates typical short and long cycle runtimes.
Discusses benefits and use with specific motor types.
Describes how boilers stage and modulate in series.
Explains how PID helps reduce boiler cycling.
Explains simultaneous modulation of boilers.
Describes how PID affects boiler cycling during load decrease.
Details the complex series/parallel combination.
Explains how PID manages cycling during load changes.
Lists sample temperatures for Canadian cities.
Lists sample temperatures for US cities.
Provides conversion data for temperature sensors.
Outlines the duration and terms of the warranty.
Explains how to obtain warranty service (RMA).
Details conditions that void the warranty or limit liability.
Addresses how local laws affect the warranty statement.
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