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T7200D,E, T7300D,E,F AND Q7300 SERIES 2000 PROGRAMMABLE COMMERCIAL THERMOSTATS AND SUBBASES
27 63-4355—4
T8621B7000 Carrier logo; LOW and HIGH SPEED LED; used on
multispeed equipment; part no. HH07AX011.
T7300D2007/Q7300A2008 Wiring differences (old=new): L=X1; X4 to X
and RC to RH field-installed jumper required.
T8621B7018 BDP multi-logo; LOW and HIGH SPEED LED; used on
multispeed equipment; part no. HH07AX012.
T7300D2007/Q7300A2008 Wiring differences (old=new): L=X1; X4 to X
and RC to RH field-installed jumper required.
T8621B7026 Honeywell logo; TRADELINE® model; Premier White®
color; direct replacement for T8621B7000 and
T8621B7018.
T7300D2007/Q7300A2008 Wiring differences (old=new): L=X1; X4 to X
and RC to RH field-installed jumper required.
T8621C 2-stage heat and 1-stage cool conventional thermostat; two transformer capability; system switch: HEAT-AUTO-COOL-OFF;
fan switch: ON-AUTO.
T8621C7008 Honeywell logo; TRADELINE® model. T7300D2007/Q7300A2040 Wiring differences (old=new): C=X.
T8621C7016 Honeywell logo; Canadian TRADELINE® model. T7300D2007/Q7300A2040 Wiring differences (old=new): C=X.
T8621C7032 Trane logo; system switch: HEAT-OFF-COOL; one
transformer; dual fuel switch; part no. TAYSTAT302.
T7300D2007/Q7300A2040 Wiring differences (old=new): B=X; RC to RH
field-installed jumper required.
T8621D 2-stage heat and 2-stage cool conventional thermostat; two transformer capability; system switch: HEAT-AUTO-COOL-OFF;
fan: ON-AUTO.
T8621D7006 Honeywell logo; TRADELINE® model. T7300D2007/Q7300A2008 Wiring differences (old=new): C=X.
T8621D7014 Honeywell logo; Canadian TRADELINE® model. T7300D2007/Q7300A2008 Wiring differences (old=new): C=X.
T8621D7022 Honeywell logo; TRADELINE® model; system switch:
HEAT-OFF-COOL; dual fuel switch; O and B terminals.
T7300D2007/Q7300A2057 Wiring differences (old=new): C=X.
T8621D7030 Trane logo; part no. THT-0607; order no. 13510323-17-7. T7300D2007/ Q7300A2008 Wiring differences (old=new): C=X.
T8621D7048 BDP multi-logo. T7300D2007/Q7300A2008 Wiring differences (old=new): C=X.
T8621D7055 Lennox logo; one transformer capability; part no.
27H2901.
T7300D2007/Q7300A2008 Wiring differences (old=new): C=X. RC to RH
field-installed jumper required.
T8621D7063 Trol-A-Temp® by Honeywell logo; system switch: HEAT-
OFF-COOL; O and B terminals.
None Wiring differences (old=new): C=X; see Trol-A-
Temp® representative for replacement.
T8621D7071 Trol-A-Temp® by Honeywell logo; no system or fan
switching.
None See Trol-A-Temp® representative for
replacement.
T8621D7089 Carrier logo; part no. HH641-103. T7300D2007/Q7300A2008 Wiring differences (old=new): C=X.
T8621D7097 Honeywell logo; TRADELINE® model; remote sensor
capability.
T7300D2007/Q7300A2008 Wiring differences (old=new): C=X; purchase
new remote 2-wire sensors separately.
T8621D7105 Friedrich logo; L terminal; extra switch for louver control;
part no. 616-789-01.
None See OEM for replacement information.
T8621D7113 Honeywell Logo; Canadian TRADELINE® Premier
White® color model.
T7300D2007/Q7300A2008 Wiring differences (old=new): C=X.
T8621D7139 McQuay logo; Premier White® color; part no. 067114301. T7300D2007/Q7300A2008 Wiring differences (old=new): C=X.
T8621D7147 Honeywell logo; TRADELINE® Premier White® color
model; remote sensor capability.
T7300D2007/Q7300A2008 Wiring differences (old=new): C=X.; purchase
new remote 2-wire sensors separately.
T8621D7154 Carrier Weathermaker logo; part no. H07AX014. T7300D2007/Q7300A2008 Wiring differences (old=new): C=X.
T8621D7162 Carrier Zone Perfect logo; part no. HH07AX015. T7300D2007/Q7300A2008 Wiring differences (old=new): C=X.
T8621D7170 Honeywell logo; TRADELINE® Premier White® color
model.
T7300D2007/Q7300A2008 Wiring differences (old=new): C=X.
T8621D7188 Carrier logo; Premier White® color; part no.
HH07AT014W.
T7300D2007/Q7300A2008 Wiring differences (old=new): C=X.
T8621E 2-stage cool only model with louver control; system switch: COOL-OFF; fan switch: ON-AUTO.
T8621E7003 Friedrich logo; L terminal; extra switch for louver control;
part no. 616-789-00.
None See OEM for replacement information.
Y7200 1-stage heat and 1-stage cool heat pump thermostat.
Y7200B1009 Contains six T7200B1020 Thermostats; Carrier part no.
50QE90016101.
T7200E2005 Wiring differences (old=new): C=X.
Y7300 Multistage T7300 thermostat and Q7300 subbase.
Table 15. Thermostat and Subbase Cross Reference. (Continued)
Model Number Description Trade Replacement Remarks