Honeywell LCBS Connect Applications Manual Download Page 6

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LCBS CONNECT SOLUTION

31-00118EFS—01

Day specific:

A good example of this is Thanksgiving. This date is always on the last Thursday of the month of November.

Thursday, as the day we celebrate American Thanksgiving, never changes, but the date does.

Extended date:

Establish a specific day or date. The ability to extend this holiday any number of days is offered. For

example, if we celebrate Thanksgiving and our establishment will be closed on the day following Thanksgiving, enter two
(2) days in the proper configuration field.

Holiday Scheduling Summary

LCBS Connect controllers do NOT have a default holiday schedule built into them. If you want to set up
different occupancy schedules on various holiday dates and times, please do so. Go to LCBS Connect wall
module or LCBS Connect Remote User Interface and program desired times.

HEATING, HEAT PUMP CONTROL

Heating Theory and Operation

There are two key theoretical objectives for heating. First, we have an objective to keep building occupants comfortable by
providing heat during heating seasons during periods when occupants occupy buildings. Second, we need to keep
building assets warm enough so that no building damage occurs to valuable assets, particularly when it's very cold
outdoors. LCBS Connect controllers are designed so they don't operate heating system in an inefficient manner, on in a
manner where damage occurs to the heating systems. Some examples to protect heating equipment are minimum on
and off times for gas and electric heating elements and heat exchangers, high limit heating controls, and lockout based
on low sensed ambient or outdoor air temperature.

Basic Gas and Electric Heating

There are two basic systemic direct heating methods that LCBS Connect supports; standard staged heating that features
natural gas heat exchangers and staged electric heat that typically include electric duct heaters. For gas heating option,
LCBS Connect can either be set to energize supply fan operation on a call for heating directly or the supply fan can be
controlled by a fan and limit device. The latter is quite common with gas heating systems. We support control of three
stages of heat, three stages of cool. Further, electric heat can typically be cycled more frequently and aggressively than
gas heat. LCBS Connect accounts for both methods and all settings.

Air to Air Heat Pump

In North America, there are areas where natural gas is not available or where electrical energy is relatively inexpensive.
This makes Air to Air Heat Pumps financially and operationally viable. The air to air heat pump features mechanics and
electronics that reverse the refrigeration cycle in an air conditioning unit and pumps warm refrigerant into the evaporator
coil to provide heat. Another heat pump that we find in North America is the "water source" or "geothermal" heat pump.
The Air to Air Heat Pump is a widely used solution that spans residential and commercial applications in North America
and is the focus of this release. We will be able to control Water Source Heat Pumps and associated boiler and cooling
tower plans in the 2.0 release of LCBS Connect.

A standard method of controlling the flow of refrigerant in a heat pump system is by controlling the position of the
"reversing valve." There are two prevalent methods are 1] energizing the reversing valve on a call for cooling and 2]
energizing the reversing value of a call for heating. For the former, the terminal designation on the low voltage terminal
strip on the heat pump is "O" and for heating, "B."

Please note!

There is a third method of heat pump control, popularized

by Carrier and Carrier brands. This method features standard Y1 and W1 cooling and heating control with the reversing
valve internally controlled. It may be necessary to adjust heating minimum on times to protect heating compressor cycle.

Fig. 1.

TIME

OUTDOOR

AIR

TEMPERATURE

ADJUSTABLE

PARAMETERS

50°F

35°F

ADJUSTABLE

OUTDOOR

TEMP