Fig. 5 — control circuit connections – Carrier 38QH User Manual
Page 4
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HEATING A COOLING
38QH
Heat Pumps — Outdoor Section
THERMOSTAT
SUBBASE
HH93AZI73
OR HH93AZ175
40AQ OR 40QB FAN COIL
COOLING CONTROL KIT
TERMINAL BOARD
3BQH
TERMINAL
BOARD
COOLING AND ONE-STAGE HEATING
(38QH/40AQ 0R40QB WITHOUT ELECTRIC HEATER)
THERMOSTAT
SUBBASE
HH93AZI73
OR HH93AZI75
40AQ OR 40QB
ELECTRIC HEATER
TERMINAL BOARD
38QH
TERMINAL
BOARD
COOLING AND TWO-STAGE HEATING
(38QH 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
3BQH
TERMINAL
BOARD
COOLING AND TWO-STAGE HEATING
(38QH WITH 40AQ,40QB OR 40FS/28HQ,VQ
EQUIPPED WITI^ ELECTRIC HEATER;
SUPPLEMENTAL HEAT, NO OUTDOOR THERMOSTATS)
В
THERMOSTAT
SUBBASE
HH93AZI73 OR
HH93AZI75
40AQ OR 40QB
ELECTRIC HEATER
TERMINAL BOARD
38QH
TERMINAL
BOARD
COOLING AND TWO-STAGE HEATING
(38QH WITH 40FS/28HQ,VQ
EQUIPPED WITH ELECTRIC HEATER;
SUPPLEMENTAL HEAT, TWO OUTDOOR THERMOSTATS)
THERMOSTAT HH07AT 171 40DQ ELEC.HEATER
WITHHH93AZI73(AUT0
(ALL MODELS)
38QH
CHANGEOVER) OR HH93AZI75 LOW VOLTAGE TERM.
TERMINAL
(MAN. CHANGEOVER) SUBBASE SPLICE CONNECTIONS BOARD
ODT
— Outdoor Thermostat
SHR
— Supplemental Heat Relay
------------- Factory Wiring
-------------Field Wiring
SUPPLEMENTAL HEAT, NO OUTDOOR THERMOSTATS)
*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
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book|1 |4
PC101
Catalog No 533-808
Printed in U S.A.
Form38QH-2SI
Pg4
7-85
Replaces:38QH-1 SI