Baseload common (i) “BL” for baseload (ii)User selection 0 – 100 % (d)Use existing timeout, Done button, and Next button functionality to enter these parameters. (e)User selections will be selected by MMI. (i) The local display does not adhere to the PCB (OEM parameter selections used by S7999). (5) In normal display operation the display allows a user to scroll through a list of temperatures with associated icons (CH, Inlet, Delta, DHW, Stack, Outdoor) using the Next button. With LL active the display will show the header temperature at the end of the list of temperatures as follows: (a)The characters “LL” are displayed in the number field (b)When the next button is pressed again the temperature is displayed. (c) If the Up or Down buttons are pressed then the LL
LLModulation sensor LL Base load common LL Modulation backup sensor LL CH 4mA water temperature LL Lead selection method LL CH 20mA water temperature LL Lag selection method LL Add stage method 1 LL Add stage detection time 1 LL Add stage error threshold LL Add stage rate offset LL Add stage
4.5SLAVE OPERATION AND SETUP
Slave Data Supporting Lead Lag
This data is provided by each slave Sola control to support operation when a LL master exists. The illustration below summarizes the slave's registers and data:
LL Slave
Some slave changes relate to pump control, frost protection, and also are available to 3rd party (non Sola) LL master devices. The generic LL slave is updated to operate as shown by the
60
Date: 8-4-2010
Revision: 0
Form: 2396
diagram below:
Frost protection requests
The frost protection in this status register will be set or cleared to match the status generated by the frost protection detection functions.
Firing for local frost protection This provides indication to the LL master that although the burner is firing independently, it is doing so for frost protection and thus is still available as a lead/lag slave. This is set when 1) frost protection is controlling the Sola per the priority scheme (which occurs only if frost protection is enabled), and 2) burner demand is true and the burner is currently firing or preparing to fire to serve that demand. Otherwise it will be clear.
Aux Pump X, Y, and Z The pump control in the Slave can be used by previously existing command devices to create the same behavior. However before these bits controlled actions is specific pump blocks, they are now more general. The pump X, Y, and Z bits control actions in any pump block defined to handle them (see the pump control block definition).
4.6SLAVE PARAMETERS
SLAVE ENABLE: DISABLE, ENABLE VIA MODBUS, ENABLE FOR SOLA MASTER
It enables or disables the "LL Slave" Demand and Rate module. If the slave mode is set to Disable then: none of the slave functions are active, Slave Status register is zero, the LL – Master Service Status register is not writable and is held at zero (this is important for pump control which might otherwise use values in this location). The Slave Command register is writable but it is mostly ignored, however the Aux pump X, Y, and Z are effective for any setting of the Slave enable parameter. The Enable for Sola Master option Slave write and Slave read parameters; if "Enable for Sola Master" is not selected, then these parameters are disabled.
SLAVE MODE: USE FIRST, EQUALIZE RUNTIME, USE LAST
If set to Use First, then this Sola will be used prior to using other Solas with other values. If set to Equalize Runtime, then this Sola will be staged according to a run time equalization
