12/06/2012 25
GI202
NOTE
If a programmable Thermostat is used, it is recommended that the program be set to
disable
. In
programmable mode, the heating system must be oversized in order to recover from the setback. Since heat
pumps are not typically oversized, they require a longer time to recover from the setback period. During
this recovery period the system will likely call for electric heat to decrease the recovery time, resulting in
lower efficiency. A closed loop performs best when the connected heat pump is allowed to cycle on and
off. This cycling allows the closed loop to absorb more heat from the earth and move it into the home.
The installer must be familiar with the manufacturer’s low voltage wiring terminology, screw terminal
terminology/colors, etc. This manufacturer’s terminology must be related to TTHERM GEO heat pump’s
screw terminal identification within this controller. The intent of this instruction manual is
not
to train each
installer on the terminology related to the specific product (thermostat) you are installing.
ADDITIONAL OPTION:
LMC/INT/SB option –
this is a separately mounted box with a pigtail cable that plugs into the main GEO
Logic controller.
It contains all the functions and wiring hookup for the utility load control receiver, gas furnace, air
handler split unit, gas furnace split unit, gas boiler, thermostat E function override, and thermostat W2
function for dual fuel.
In addition there are four LED’s to assist in operation and troubleshooting. The design includes
adequate relays for “R” voltage isolation between furnace/air handler and the GEO Logic Controller.
Accessories/Options
Part Number
LMC/INT Option
T2-TT-INT-1
Fuse – source loop pump, 10A
T9-UFUSE6670
Internal Strip Heater
T2-KN-**-T
PC Software and Cable (Windows 95 - 7)
T2-ET-SOFT-GL1
Hand Held GEO Logic scan tool
T2-_________
Thermostat Simulator w/ACD override
T2-TT-CS-1
30” x 38” Air Pad
E2-0122
Содержание TVA series
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