Fig. 5 — control circuit connections – Carrier 38QB User Manual
Page 7
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THERMOSTAT
AND
SUBBASE
40AQ OR 40QB FAN COIL
COOLING CONTROL KIT
TERMINAL BOARD
380B
TERMINAL
BOARD
(38QB/40AQ 0R40QB WITHOUT ELECTRIC HEATER)
THERMOSTAT
AND
SUBBASE
40AQ OR 40QB
ELECTRIC HEATER
TERMINAL BOARD
38QB
TERMINAL
BOARD
COOLING AND TWO-STAGE HEATING
(38QB WITH 40AQ, 40QB,QH OR 40FS/28HQ,VQ
EQUIPPED WITH ELECTRIC HEATER;
SUPPLEMENTAL HEAT, ONE OUTDOOR THERMOSTAT)
THERMOSTAT
AND
SUBBASE
40AQ OR 40QB
ELECTRIC HEATER
TERMINAL BOARD
38Q8
TERMINAL
BOARD
COOLING AND TWO-STAGE HEATING
(38QB WITH 40AQ,40QB,QH OR 40FS/28HQ,VQ
EQUIPPED WITH ELE6
t
RIC HEATER;
SUPPLEMENTAL HEAT, NO OUTDOOR THEf^MOSTATS)
THERMOSTAT
AND
SUBBASE
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)
В
THERMOSTAT HH07AT171
40DQ ELEC.HEATER
WITH HH93AZI73(AUTO
(ALL MODELS)
38QB
CHANGEOVER) OR HH93AZI75 LOW VOLTAGE TERM.
TERMINAL
(MAM CHANGEOVER) SUBBASE SPLICE CONNECTIONS BOARD
SUPPLEMENTAL HEAT, NO OUTDOOR THERMOSTATS)
ODT — Outdoor Thermostat
SHR — Supplemental Heat Relay
------------ Factory Wiring
------------ Field Wiring
‘Transformer (60 va) located in cooling control kit or electric heater
fRemove factory-installed jumper (Connection B) when installing outdoor thermostats (ODT)
Fig. 5 — Control Circuit Connections