Lochinvar 1.3, 1.5 Cascade, Master controlled through ModBus Demand conf, 8 Parameter Set 4D

Page 16
Cascade

PC Program Instructions

6Parameters

Cascade

Each burner control in the Cascade must be given a unique address. This address can be changed by accessing parameter 4CC. The Leader (top) burner (to which the thermostat/zone control, system sensor, and system pump (if controlled by the boiler) are connected) must be set to address 0. All the Member burners must be given an address from 1 to 15. The range of this parameter is 0 to 15. The default value is 0-1.

Master controlled through ModBus (Demand conf)

If the boiler or cascade is to operate based on its own inputs, this must be set to No. The boiler can still be monitored through ModBus with this parameter set to No. If the boiler or cascade is to receive commands from ModBus, then this must be set to Yes. The default setting is No.

Reload short time ModBus out of order

When the boiler or cascade is receiving commands from ModBus, but using its own system supply and tank sensor readings, the commands must be refreshed at least every 4 minutes by the building automation system. This is a fixed timeout. If the boiler or cascade is receiving either the system supply temperature or the tank temperature reading from the building automation system, that information should be refreshed more often. This parameter determines how often this refresh must occur before the boiler or cascade goes into its stand-alone mode. The time range for this parameter is 0 to 120 seconds. The default value is 10 seconds.

On the tabs at the top of the window, click on the tab labeled 4D Pump Delay to set the delay time for the boiler, system, and HW pumps (see FIG. 6-8 below).

Figure 6-8Parameter Set 4D

Master controlled through ModBus (Demand conf) 16 Reload short time ModBus out of order

SH pump delay after SH demand (Boiler Pump D)

This feature sets the length of time the boiler pump will run after a SH demand has been satisfied. This parameter is adjustable by accessing parameter 4DA. The time range for this parameter is 0 minutes to 40 minutes. The default time is 30 seconds.

HW pump delay (HW Pump D)

This feature sets the length of time that the HW pump (if connected) will run after a HW demand has been satisfied. This parameter is adjustable by accessing parameter 4DB. The time range for this parameter is 0 minutes to 40 minutes. The default time is 30 seconds.

System pump delay (Sys Pump D)

This feature sets the length of time the system pump (if connected) will run after a SH demand has been satisfied. This parameter is adjustable by accessing parameter 4DC. The time range for this parameter is 0 minutes to 40 minutes. The default time is 30 seconds.

To set the parameters for Service Notification, click on the tab labeled 4E Notify Setup (see FIG. 6-9 below).

Sys Pump (Sys Pump mode)

The system pump can be set to operate different ways. The operating mode can be adjusted by accessing parameter 4DG. When set to 0, the system pump will run continuously. When set to 1, the system pump output will not activate. When set to 2, the system pump will turn on and off based on the space heating call for heat. The system pump will always turn off when the Outdoor Air Shutdown feature is active. The system pump will always turn on when the freeze protection feature is active. The default setting is 2.

Figure 6-9Parameter Set 4E

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Contents Models SYNC - PCP Rev ASave this manual for future reference PC PROGRAM INSTRUCTIONS FOR THE SYNCContents 1Installation Program installationUSB installation Program setupFigure 1-3 Password Window Starting the programFigure 1-1 SMART TOUCH PC Main Screen Figure 1-2 Sitecs937Lab Main ScreenFigure 2-1 SMART TOUCH Status Screen 2Status ScreenPC Program Instructions 2Status Screen Figure 2-1 continuedPC Program Instructions Figure 3-1 SMART TOUCH Graphics Screen 3Graphics ScreenPC Program Instructions Figure 4-1 Fault History Screen 4Fault History ScreenPC Program Instructions Figure 5-1 Cascade Screen 5Cascade ScreenPC Program Instructions Set 1 System Setup Set 2 Functional Data 6ParametersParameter information screens Set 4 Menu ValuesSet 1 System setup Ramp delay settings6Parameters continued Changeable parametersBlock time switching boiler on Block time switching boiler on/offBlock time Switch On/Off 2nd burner HW Set 2 Functional DataSet 4 Menu values Figure 6-5 Parameter Set 2EFigure 6-6 Parameter Set 4A Space Heating SH user setpoint User SetpShift OA reset curve Shift Air Reset Max service time Max Serv tSH off-ondifferential SH off/on df Offset HW setpoint to end HW demandTime to switch between HW and SH SH/HW sw tim Cascade max SH step power based Max outl tempConfig SH control Tank differential tempCascade Master controlled through ModBus Demand confReload short time ModBus out of order Figure 6-8 Parameter Set 4DNo. of months for service reminder Serv Not time Running hours for service reminder Serv NotRun hBurner cycles for service reminder Serv Not cycl Figure 6-10 Parameter Set 4FFigure 6-11 Outdoor Air Reset Curve BMS Power at min voltage BMS mod @minVBMS Power at max voltage BMS mod @maxV Figure 6-12 Parameter Set 4GBMS Voltage at min power BMS V @min mod BMS Voltage at max power BMS V @max modBMS Demand Enable 1 Voltage Storing parameters on your PCRevision Notes Revision A initial release
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1.5, 1.3, 1 specifications

Lochinvar 1 is a remarkable achievement in the realm of modern technology and engineering. As a powerful and efficient water heater, it has been designed to cater to a wide range of residential and commercial needs. One of the standout features of Lochinvar 1 is its advanced heating technology, which incorporates a high-efficiency condensing design. This technology allows the unit to achieve impressive energy savings by maximizing heat transfer while minimizing energy consumption.

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