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
W2 H2, R4, W3, Y Stage 2 heating relay
W3 —
b
X B , C, X1, X2
X1, X3 A, A1, A2, C,
L, X, Z
X4 —
Y1 C1, M, Y
Y1, Y RS, M
Y2 C2
Y3 —
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.
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—1
Table 6. Terminal Designations (continued).
Typical Connection
Stage 3 heating relay
Common
User defined Light Emiting Diodes (LEDs)
LED common
Stage 1 compressor contactor (Q7300C, D)
Stage 1 cooling compressor (Q7300A, G, L)
Stage 2 cooling compressor (conventional).
Stage 2 compressor contactor (heat pump).
Stage 3 cooling compressor
ML7984 Actuator connection (Q7300L only); no call 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 (Q7300L only)
High-speed fan output (Q7300L only); activate during calls
for cooling
Low-speed fan output (Q7300L only); acti-vated on calls for
heat and fan On selection.
Pump interlock relay (Q7300L only); operates circulator
pump in hydronic heat or energizes conventional heat
system.
ML7984A Actuator connection (Q7300L only); no call 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
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
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 —
— —
— —
— —
— —
— —