Lochinvar 1.3, 1.5 Tank differential temp, Time to switch between HW and SH SH/HW sw tim

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Tank differential temp

PC Program Instructions

6Parameters (continued)

Tank differential temp

This parameter determines how far below the tank setpoint the tank sensor temperature must go to start a HW call for heat. This setting can be adjusted by accessing parameter 4AT. The temperature range is 0°F (0°C) to 100°F (38°C). The default value is 5°F (3.5°C).

Time to switch between HW and SH (SH/HW sw tim)

This feature sets the length of time the control will stay in HW mode when a SH call has been received. After this time period has expired the control will determine if a SH call needs to be serviced. If the System Supply Temperature is below the turn-on temperature, the control will revert to SH mode. Otherwise, it will remain in HW mode until the System Supply Temperature drops below the turn-on temperature. If a HW call is still active the timer will reset. After the time period has expired the control will revert to HW mode. This will continue back and forth until one of the demands has been satisfied. This parameter can be changed by accessing parameter 4AU. The time range of this parameter is 10 minutes to 240 minutes. The default value is 30 minutes.

Boost function time (Boost Tim)

This function will only work if the outdoor air sensor is connected. The Boost Function Time sets the amount of time that must elapse during an SH demand before the water temperature setpoint will be increased. This parameter can be changed by accessing parameter 4AV. The time range for this parameter is 1 minute to 60 minutes. The default value is 20 minutes.

Boost function temp increase (Boost incr)

This function will only work if the outdoor air sensor is connected. If a SH demand lasts longer than the programmed time setting in parameter 4AV, and there have been no HW demands, the control will increase the water temperature setpoint by the amount in this parameter. If the SH demand continues through another time period, the setpoint will be increased again. This will continue until either the SH demand ends, a maximum of 20 increases has occurred, or the maximum user setpoint has been reached. Once the SH demand has been satisfied the setpoint will revert back to its calculated setting. The boost temperature can be changed by accessing parameter 4AW. The temperature range of this parameter is 0°F to 45°F(25°C). The default value is 0°. This feature will be active if this parameter is set to anything other than 0°F.

Outlet setpoint temp for indirect HW (Indir HW Setp)

When a HW call for heat becomes active, the control will control the firing rate of the boiler in order to maintain the outlet water temperature at this setpoint. This parameter can be changed by accessing parameter 4AX. The temperature range of this parameter is 50°F (10°C) to 190°F (88°C). The default value is 180°F (82°C).

Cascade max SH step power based (Max outl temp)

When a system supply sensor is connected, each burner applies this setpoint to its outlet sensor during a space heating call for heat. The controls limit the modulation of each burner in order to maintain the system supply temperature at the setpoint. If an outlet temperature approaches this setting, the controls will also limit the modulation of that burner in order to not exceed the setting. The control uses parameters 4AD and 4AE to turn the burner off and back on based on this setting as well. This parameter can be changed by accessing parameter 4AY. The temperature range of this parameter is 32°F (0°C) to 212°F (100°C). The default value is 185°F (85°C).

Cascade DHW setpoint offset for all members

Not used.

On the tabs at the top of the window (FIG. 6-7), click on the tab labeled 4C Boiler Config to set the parameters that enable BMS operation and determine the controlling sensor (see FIG. 6-7 below).

Figure 6-7Parameter Set 4C

Config SH control

The Config SH Control parameter selects the method used to control the modulation of the boiler. This parameter must always be set to 2.

BMS

If BMS control of Cascade has been selected in parameter 4CG, the control must know how to use the 0-10Vdc signal. This can be either temperature based or power based. This parameter can be changed by accessing parameter 4CB. The allowable values for this parameter are “0” for power or “2” for temperature. The

default value is 0.

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Contents PC PROGRAM INSTRUCTIONS FOR THE SYNC ModelsSYNC - PCP Rev A Save this manual for future referenceContents Program setup 1InstallationProgram installation USB installationFigure 1-2 Sitecs937Lab Main Screen Figure 1-3 Password WindowStarting the program Figure 1-1 SMART TOUCH PC Main Screen2Status Screen Figure 2-1 SMART TOUCH Status ScreenPC Program Instructions Figure 2-1 continued 2Status ScreenPC Program Instructions 3Graphics Screen Figure 3-1 SMART TOUCH Graphics ScreenPC Program Instructions 4Fault History Screen Figure 4-1 Fault History ScreenPC Program Instructions 5Cascade Screen Figure 5-1 Cascade ScreenPC Program Instructions Set 4 Menu Values Set 1 System Setup Set 2 Functional Data6Parameters Parameter information screensChangeable parameters Set 1 System setupRamp delay settings 6Parameters continuedSet 2 Functional Data Block time switching boiler onBlock time switching boiler on/off Block time Switch On/Off 2nd burner HWSpace Heating SH user setpoint User Setp Set 4 Menu valuesFigure 6-5 Parameter Set 2E Figure 6-6 Parameter Set 4AOffset HW setpoint to end HW demand Shift OA reset curve Shift Air ResetMax service time Max Serv t SH off-ondifferential SH off/on dfTank differential temp Time to switch between HW and SH SH/HW sw timCascade max SH step power based Max outl temp Config SH controlFigure 6-8 Parameter Set 4D CascadeMaster controlled through ModBus Demand conf Reload short time ModBus out of orderFigure 6-10 Parameter Set 4F No. of months for service reminder Serv Not timeRunning hours for service reminder Serv NotRun h Burner cycles for service reminder Serv Not cyclFigure 6-12 Parameter Set 4G Figure 6-11 Outdoor Air Reset CurveBMS Power at min voltage BMS mod @minV BMS Power at max voltage BMS mod @maxVStoring parameters on your PC BMS Voltage at min power BMS V @min modBMS Voltage at max power BMS V @max mod BMS Demand Enable 1 VoltageRevision 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.

The Lochinvar 1 utilizes a stainless steel heat exchanger that enhances durability and corrosion resistance. This not only extends the lifespan of the unit but also ensures consistent performance over time. Coupled with a user-friendly control system, users can easily adjust settings and monitor performance, enhancing overall convenience and usability.

Another key characteristic of the Lochinvar 1 is its compact design, making it suitable for a variety of installation environments. Whether in a residential basement or a commercial utility room, the unit’s space-saving configuration allows for efficient use of available area without compromising on capability.

Safety features are integral to the Lochinvar 1, providing peace of mind for users. The unit is equipped with advanced monitoring systems that can detect irregularities and automatically shut down the system if necessary. This not only protects the equipment but also enhances the safety of the environment in which it operates.

In terms of performance, Lochinvar 1 boasts a high recovery rate, ensuring hot water is available on demand. This is particularly beneficial for settings with high water usage, allowing simultaneous operations without lag.

Moreover, the unit supports various venting options, offering flexibility during installation. Whether using traditional vertical venting or innovations like direct venting, Lochinvar 1 accommodates different building designs and local codes, making it highly versatile.

In conclusion, Lochinvar 1 epitomizes the melding of efficiency, reliability, and user-friendly technology. With its high-performance features, robust safety systems, and adaptable installation options, it stands out as a forefront player in the water heating industry, meeting the diverse needs of today's consumers and businesses alike.
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