Rheem 80MDV SERIES

36
Communicating Furnace
INTEGRATED FURNACE CONTROL
T5
T4
T3
P2
7-TERMINAL
LOW VOLTAGE
CONNECTION
P5
5-TERMINAL
LOW VOLTAGE
CONNECTION
P1
4-TERMINAL
LOW VOLTAGE
CONNECTION
P100/P101
FUSE
E11
24VAC
(FROM XFMR)
E10
24VAC
SEC
(FROM XFMR)
T2
24VAC
THERMOSTAT
INPUTS
AUX 1
CONNECTION
AUX 2
CONNECTION
COMMON FOR
AUX 1 & AUX 2
INPUTS
SUPP
LY
AIR SENSOR INPUT
OUTDOOR
AIR TEMPERATURE
SENSOR INPUT
S8
PUSH BUTTON
U38
DUAL 7 SEGMENT
DIAGNOSTIC DISPLAY
P6
MEMORY CARD
CONNECTOR
S1 S2 S3
DIP SWITCH BANKS
P4
CIRCULATION BLOWER
COMMUNICATIONS
CONNECTION
HUMIDIFIER RELAY OUT
(DRY CONTACTS)
ELECTRONIC
AIR CLEANER OUTPUT
NEUTRAL FOR
ELECTRONIC AIR
CLEANER OUTPUT
NEUTRAL TERMINALS
(NEUTRAL)
P3
INDUCER OUTPUT
120 VAC TERMINALS
(L1)
COMMUNICATIONS LED'S
TRANSMIT(TX)
RECEIVE(RX)
S4
BIAS/TERMINATION
DIPSWITHES(COMM ONLY)
(ALL MUST BE OFF)
T1
SPARK IGNIT
ION
TRANSFORMER
J1
RJ-11 COMMUNICATION CONNECTION
TO MAIN (TWIST-LOCK)
WIRING HARNESS
24 VAC TO LOW
VOLTAGE SIDE
OF CONTROL
TRANSFORMER
20
19
18
17
16
15 14 13 12
11
9
8
7
6
5
4
3
2
1
10
S1
S2
S3
ST-A1194-51
FIGURE 27
R80V TWO-STAGE COMMUNICATING FURNACE CONTROL LAYOUT