T Therm Geo TST-***, Инструкция по установке и эксплуатации

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12/03/2012
29 GI301
GEO Logic™ Controller
GEO Logic Features
The GEO Logic controller has a control strategy that will maximize the capabilities of the heat pump. The LED
information lights on the front will communicate the THERM GEO’s current stage and mode of operation.
GEO Logic also has the capability to communicate diagnostic information so it can be kept running at maximum
efficiency.
Application
The GEO Logic controller is standard on all TTHERM GEO Heat Pump models. The GEO Logic controller is
designed to run under different operating “modes”.
 Basic water to air packaged unit
 Basic water to air packaged unit with Electro Industries’ WarmFlo
®
strip heat
 Basic water to air packaged unit with added gas furnace using the T2-TT-INT-1 option

Basic water to air split unit, using the T2-TT-INT-1 option
 Basic water to water packaged unit
Abbreviations used in the section:
ACD – anti-cycle delay timer (factory set @ 3minutes)
AUX – strip heat module, an option installed within the TTHERM GEO cabinet
CC – compressor contactor
CDT – compressor refrigerant discharge temperature
CFM – cubic feet per minute airflow
COMP – compressor
CSL – compressor safety logic subset, separate processor and power supply which monitors and controls the
major compressor protection sensors
DDT – desuperheater refrigerant discharge temperature
ECM - electronically commutated blower motor
Hard Lockout – the CSL has completed a sequence and shut down the compressor. The GEO Logic processes
this status, forwards this status to various connections/indicators lights, and provides AUX backup heat
from stat-Y. This operating state is only cleared by a power reset.
HUM – a stat terminal relating to a humidistat function to increase cooling dehumidification. Factory default for
this terminal is at 24 volts, assumes the stat is normally high and goes low when dehumidification is
desired. Thus there is a peg jumper (J12) which must be removed when a stat HUM wire is connected.
This function is only available on the TVA & TVT units.
INT – the monitor line from the LMC/SB option box indicating a declared interrupt.
LED – light emitting diode
LMC – utility load management control (off-peak = NC), identifying the device with blue and blu/wht 2-wire
connection to interrupt electric usage and/or transfer the heating energy function to a standard gas/oil
thermostat type terminal block.
LWT – source leaving water temperature
RPM – revolutions per minute
SB – standby furnace or equivalent heating unit or mode
Soft Lockout – reference CSL limit conditions, there is a set number of retries once “lockout” has been declared.
When the system is operating in this retry range, for communication purposes this is considered soft
lockout.
ST- supply temperature (output air or water) sensor
STG – stage 1, 2 or 3 of electric heat
CAUTION
Type of room thermostat required
Use a heat pump thermostat with an “O” signal for cooling, and a compressor signal “Y” for heat/cool. The
thermostat needs to provide a “Y2” signal if the unit is equipped with two compressor stages. The
thermostat will also need to supply a “W2” signal for aux heat which may be electric or gas.