Temperatures in Reno vary greatly during the year and during a 24 hour period.  A sophisticated heating and cooling system maintains  comfortable temperatures throughout the worship building.

Elements of the system include:

3 "fan coil" units in the Great Room. (nos. 1,2 and 3)
A "fan coil" unit serving the Gathering Room (no. 7)
A "fan coil unit serving the rest rooms and nursery (no. 6)
An evaporative cooling tower
A buried water tank
A gas furnace
A chiller unit

There are control computers in the five fan coil units. Another controls the underfloor heating/cooling. There is also an unused control computer for irrigation control.

They are all connected together via a proprietary network.  A communication oriented device provides a serial interface to this network and hence to the individual control computers.

State Transition Diagram for Fan Coil #1
State Transition Diagram for Floor Heating/Cooling
Logic tables for Fan Coil Pump
Schematic of HVAC System

Report - System Description Document
Graph of RoomTemperature and Thermostat Setting
Graph of Floor Temperature and Outside Air Temperature
Data sheet - outside air temperature sensor
Data sheet - controller for floor heating
Data sheet - communications interface
Data sheet - fan coil controller
Data sheet - room sensor (guess we have STE-5022-10)