Panasonic 8900 SH installation manual Sequence of Operation

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Series 8900SH Control Panel

Operation And Installation Manual

SECTION 2: SEQUENCE OF OPERATION

All functions of the Control Panel are activated through the use of two-digit Entry Codes that provide instruction to the panel. These codes are explained in more detail in Sections 3 and 8. The sequence of operation is best explained through the following example:

Assume a six boiler TRIAD system heating an office building that is empty at night and on weekends, an average outside temperature of 70°F, with an expected night temperature of 35°F.

The control panel is on and controling the building heat. Through Entry Codes it has been instructed as follows:

Turn the heat on when the outdoor temperature drops below 60°F and off when it rises above 60° F.

Maintain a minimum Return Water Line temperature of 100°F, with a starting outdoor temperature of 60° F.

The manual Reset Ratio is set on Automatic.

The rate of system change factor is set at .10.

The boilers will fire in a sequence of 1, 2, 3, 4, 5, 6, and boiler number 1 is the lead boiler.

At 6:00 pm the temperature will automatically be set back by 5°F, with a return to normal temperature occuring 6:00 am.

As the outside temperature gradually drops from 70°F to 60°F, the control panel prepares to bring on heat. The decision has been made for the boilers to fire in a sequence of 1 through 6, so as the outdoor air temperature drops below 60°F, the control panel calls for the number 1, or lead boiler, to fire. As boiler 1 fires it begins to add heat to the return main. Because it is the designated lead boiler, number 1 will continue to fire intermittently while heat is called for. The lead boiler shuts off when the required Return Water Line temperature is reached (determined with code 14) and fires again when the Return Water Line temperature has dropped 2°F. This allows all the cycle time and the attendant wear and tear to be confined to the lead boiler. Any boiler can be designated the lead at any time.

As the temperature outside continues to drop, the control panel notes that the Return Water Line temperature has not reached the 100°F it must maintain, so it calls for the number 2 boiler to fire. However, before it can bring on the number 2 boiler it checks to make sure that the other instructions entered into the control panel are being satisfied. These are (i) the rate of system change factor, (ii) the required Return Water Line temperature, and (iii) the calculated Reset Ratio. With this information the panel can fire the other boilers in a way that will most efficiently satisfy the heating needs.

Section 2

Sequence of Operations

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Contents Triad Boiler Systems, Inc Table of Contents Introduction Installation ProceduresStartup Procedures Keypad with Entry ProceduresOperation And Installation Manual Wiring Diagram Outdoor and Return Water Line Sensors CPU Series 8900SH SpecificationsGlossary Limited Five -YEAR Full Term Warranty Sequence of Operation Operation And Installation Manual This code starts the sequence for the 60 codes Entry Codes50-57 Code Function Settings Worksheet For Code SettingsCalibration Sensor CalibrationOperation And Installation Manual General Troubleshooting Sensor TroubleshootingCode Display Monitoring CodesOther Important Items Display Explanation Error CodesPage Entry Code Details Entry Code 21 Outside Temperature Shutdown SettingEnter Your Choice Entry Code 22 Minimum Return Water Temperature SettingEntry Code 26 Number of Boilers to be Controlled Entry Code 24 Rate of Change FactorEntry Code 28 Outside Design Temperature Setting = 600 AM, 5F Setback = 600 AM, 0F Setback Entry Code 30 37 Water Temperature Setback SchedulesEntry Code 40 42 Stage /RELAY /BOILER Activation on Press = Save KEY, to have Boilers 9 Through 12 Entered Entry Code 63 Manual Override of Boiler Stages Entry Code 62 System ModeEntry Code 61 Keyboard Lock Unlock Press Entry Code 66 Setback on / OFF Press Entry Code 65 Manual Override of the System Primary PumpEntry Code 69 Month and Year Entry Code 67 24 Hour Clock Hour and MinuteEntry Code 68 DAY of the Week and Date of the Month Entry Code 81 Setback Override Codes 30 to Fine Tuning the Heating SystemOperation And Installation Manual Building Experiences a Power Outage TroubleshootingControl Panel will not Accept Entries

8900 SH specifications

The Panasonic 8900 SH is a remarkable addition to the world of smartphones, exemplifying cutting-edge technology and user-centric design. This model stands out with its exceptional features, which cater to a diverse range of users from tech enthusiasts to everyday consumers.

One of the most notable aspects of the Panasonic 8900 SH is its sleek and sophisticated design. The device boasts a premium glass and metal finish, providing an elegant look and feel that is both modern and durable. Its ergonomic shape ensures comfortable handling, allowing users to navigate seamlessly through its vibrant display.

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One of the standout features of the Panasonic 8900 SH is its camera system. The smartphone sports a high-resolution camera that takes stunning photos even in low-light environments. With advanced image stabilization and various shooting modes, photography enthusiasts can capture moments with clarity and detail. The front-facing camera is also equipped with features that enhance selfies, making it a hit among social media users.

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In conclusion, the Panasonic 8900 SH combines style, performance, and practicality, making it an excellent choice for anyone in the market for a reliable and feature-rich smartphone. Its blend of advanced technology and user-friendly characteristics makes it a noteworthy contender in the competitive smartphone space. Whether for business or personal use, this device is designed to meet the needs of today's smartphone users.
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