Honeywell T7200D Product Data page 8

T7200D,E, T7300D,E,F AND Q7300 SERIES 2000 PROGRAMMABLE COMMERCIAL THERMOSTATS AND SUBBASES
Standard Alternate
Terminal Terminal
Designations Designations
W1 H1, R3
W2 H2, R4, W3, Y Stage 2 heating relay.
W3 —
X b , C, X1, X2 Common.
B
X1, X3 A, A1, A2, C,
L, X, Z
X4 —
Y 1 C1, M, Y
Y1, Y RS, M
Y 2 C2
Y 3 —
BM —
FC —
GH —
GL —
P1, P2 —
RM —
— C, H, L
— O
— P
— R1, R2
— T
a
Some OEM models reverse the economizer terminal designations A1 and A2.
b
Some OEM models label the terminal for transformer common B.
c
Only applies to Q7300H2037 model.
1. Loosen the terminal screws on the subbase or wallplate
and connect the system wires. See Fig. 9.
IMPORTANT
Use 18-gauge, solid-conductor color-coded
thermostat cable for proper wiring. If using
18- gauge stranded wire, no more than ten wires
can be used. Do not use larger than 18-gauge wire.
63-4355—2
Table 6. Terminal Designations (continued).
Typical Connection
Stage 1 heating relay (Q7300A, G, H) or auxiliary heat
relay (Q7300C, D, H).
Stage 3 heating relay.
User defined Light Emiting Diodes (LEDs).
LED common.
Stage 1 compressor contactor (Q7300C, D, H).
Stage 1 cooling compressor (Q7300A, G, H
Stage 2 cooling compressor (conventional).
Stage 2 compressor contactor (heat pump).
Stage 3 cooling compressor.
ML7984 Actuator connection (Q7300H
for heat, valve closed; call for stage 1 heat, valve
approximately one-half open; call for stage 2 heat, valve
fully open.
Fan control transformer (Q7300H
High-speed fan output (Q7300H
calls for cooling.
Low-speed fan output (Q7300H
calls for heat and fan On selection.
Pump interlock relay (Q7300H
circulator pump in hydronic heat or energizes
conventional heat system.
ML7984A Actuator connection (Q7300H
for heat, valve closed; call for stage 1 heat, valve
approximately one-half open; call for stage 2 heat, valve
fully open.
HSII Control Panel.
Momentary circuit changeover.
Defrost.
Low- and high-speed fan relays.
External temperature readout, T-relay; outdoor thermistor.
c
, L).
c
, L only); no call
c
, L only).
c
, L only); activate during
c
, L only); activated on
c
, L only); operates
c
, L only); no call
2. Securely tighten each terminal screw.
3. Push excess wire back into the hole.
4. Plug the hole with nonflammable insulation to prevent
drafts from affecting the thermostat.
8
Terminal
Function Type
Output 24V powered
contact
Output 24V powered
contact
Output 24V powered
contact
Input
Annunciation —
Annunciation —
Output 24V powered
contact
Output 24V powered
contact
Output 24V powered
contact
Output 24V powered
contact
Output —
Input —
Output 24V powered
contact
Output 24V powered
contact
Input, Output 24V powered
contact
Output —
— —
— —
— —
— —
— —