Operation - Honeywell TRADELINE Q7300H Series Installation Instructions Manual

Q7300H SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES

OPERATION

Refer to Table 5 for Q7300H2037 Subbase operation sequence.
System
Mode Setting Setting
Occupied Any Auto
— On
Heat Auto
Heat Auto
Cool Auto
Unoccupied Any Any
On
a
Low speed fan is activated in the Heat mode and high speed fan is activated in the Cool mode.
Remote Temperature Sensing and Override
The Q7300H Subbase can be used with the T7147 Remote Sensor to sense temperature and provide the Occupied
mode temperature. The subbase also can be used with the T7047 Sensor if remote occupied control is not required.
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Table 5. Q7300H2037 Subbase Operation Sequence.
Fan
Equipment
a
Call
— Damper control relay energized.
— Last system dependant . Last system is cool: call is for high
speed fan. Last system is heat: call is for low speed fan.
Stage 1 Hydronic applications: ML7984 approximately one-half
heat open. Pump interlock relay activated to energize circulator
pump. Conventional applications: stage 1 heat is activated.
Low-speed fan is activated.
Stage 2 Hydronic applications: ML7984 is fully open.
heat Conventional systems: no action.
Stage 1 Cooling relay activated. High-speed fan activated.
cool
— Damper control relay de-energized.
— System fan operates at appropriate speed with call for heat
or cool equipment.
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Loads
Energized
A2
GL or GH
A2, GL,
RM, BM,
P2
A2, GL,
RM, BM,
P2
A2, GH, Y
—
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