Fig. 5 — control circuit connections – Carrier 380B User Manual
Page 6
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THERMOSTAT
SUBBASE
HH93AZI73
OR HH93AZI75
40AQ OR 40QB FAN COIL
COOLING CONTROL KIT
TERMINAL BOARD
38QB
TERMINAL
BOARD
COOLING AND ONE-STAGE HEATING
(38QB/40AQ 0R40QB WITHOUT ELECTRIC HEATER)
THERMOSTAT
SUBBASE
HH93AZI73
ORHH93AZI75
40AQ OR 40QB
ELECTRIC HEATER
TERMINAL BOARD
38QB
TERMINAL
BOARD
COOLING AND TWO-STAGE HEATING
(38QB WITH 40AQ.40QB OR 40FS/28HQ, VQ
EQUIPPED WITH ELECTRIC HEATER;
SUPPLEMENTAL HEAT, ONE OUTDOOR THERMOSTAT)
THERMOSTAT
SUBBASE
HH93AZI73
OR HH93AZI75
40AQ OR 40QB
ELECTRIC HEATER
TERMINAL BOARD
38QB
TERMINAL
BOARD
COOLING AND TWO-STAGE HEATING
(38QB WITH 40AQ,40QB OR 40FS/28HQ.VQ
EQUIPPED WITH ELECTRIC HEATER;
SUPPLEMENTAL HEAT. NO OUTDOOR THERMOSTATS)
THERMOSTAT
SUBBASE
HH93AZI73 OR
HH93AZI75
40AQ OR 40QB
ELECTRIC HEATER
TERMINAL BOARD
38QB
TERMINAL
BOARD
COOLING AND TWO-STAGE HEATING
(38QB WITH 40FS/28HQ,VQ
EQUIPPED WITH ELECTRIC HEATER;
SUPPLEMENTAL HEAT, TWO OUTDOOR THERMOSTATS)
B
THERMOSTAT HH07AT 171
40DQ ELEC. HEATER
WITHHH93AZI73(AUT0
(ALL MODELS)
CHANGEOVER) OR HH93AZI75 LOW VOLTAGE TERM.
(MAN CHANGEOVER) SUBBASE SPLICE CONNECTIONS
38QB
TERMINAL
BOARD
SUPPLEMENTAL HEAT, NO OUTDOOR THERMOSTATS)
EHR — Supplemental Heat Relay
ODT — Outdoor Thermostat
-------------Factory Wiring
------------- Field Wiring
‘Transformer (60 va) located in cooling control kit or electric heater
tRemove factory-installed jumper (Connection B) when installing outdoor thermostats (ODT)
Fig. 5 — Control Circuit Connections