Honeywell Prestige 2.0 THX9421 Manual page 146

®
THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE
TRANSFORMER
120 24
VAC VAC
R IS JUMPERED TO RH.
1
THE BOILER CONTROLS THE CIRCULATOR PUMP IN THIS SYSTEM.
2
Fig. 333. 2-Wire Zone Valve with end switch.
TRANSFORMER
120 24
VAC VAC
R IS JUMPERED TO RH.
1
Fig. 334. Series 20 hot water heat.
TRANSFORMER
120
VAC
REMOVE THE JUMPER FROM RH TO RC WHEN USED WITH
1
AQ2000 SERIES PANEL.
Fig. 335. AQ2000 series panels or other hot water relay
68-0311—07
®
ZONE VALVE BOILER
TR
TH
2
1
R
C
W W2 W3 Y Y2 G A
THERMOSTAT/EIM
M31477
SERIES 20 VALVE
C
R(5) B(4) W(6)
1
R
C
W W2 W3 Y Y2 G A
EIM
HOT WATER RELAY PANEL
ZONE 1
RH W
1
R
24
C
VAC
RC RH W W2 W3 Y2 G
THERMOSTAT/EIM
M31479
panels.
IAQ WITH EIM
THERMOSTAT/EIM
T
TO THERMOSTAT
T
HEAT PUMP
O/B
AUX1
AUX2
2
L/A
M31478
THE BOILER IS CONTROLLING THE CIRCULATOR PUMP IN THIS DIAGRAM
1
Y2 USED WITH HEAT-PUMPS THAT HAVE 2 COMPRESSOR STAGES.
2
Fig. 336. Heat pump with oil forced air backup.
146
HEAT PUMP
O
Y
Y2
RELAY OIL FURNACE
G
3 T
R
C
1 T
1
M31480