Wiring Diagrams

HPZ AND HSR HYDRONIC PANEL WIRING DIAGRAMS
11 33-00476—01
Fig. 10. T775P used with Hydronic panels for outdoor reset, and/or staging two boilers.
T775P Key Program settings
•Setup
oSensors
»# of sensors 2
» Sensor A Discharge A
» Sensor B outdoor
•Outputs
o# relays 6
o #loops 1
oOptions
» Min off time 5
» Min on time 0
» DI Options Enable
o On Delay 600
o Off Delay 0
oReset Yes
NOTE: HPZ series Hydronic panel, thermostats, valves, and
pumps sold by Resideo (Honeywell Home). T775P sold by
Honeywell.
ZONE VALVES
R
C
W
R
C
W
R
C
W
R
C
W
Zone 1
Priority
Zone 2
Zone 3
Zone 4
24 VAC Thermostats
HPZC104
Four Zone
Zone Valve Controller
Priority
Zone 1
Zone 2
Zone 3 Zone 4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
Boiler
TT
End
Switch
TT
On/Off
Priority
End
Switch
On/ Off
Priority
Zone
Zone
Power
Boiler
End Switch
T-stat Call
Valve Open
DHW
Priority
12
34
Pump End
Switch
Zone 1 Pump
End Switch
X
XN/O
COM
N/C
N
H
Input
120VAC
24 VAC Zone Valves
40 VA
TRANSFORMER
THERMOSTATS
1
1
V8043 SERIES VALVES
WITH END SWITCHES
W
C
R
W
C
R
W
C
R
W
C
R
1
NC
C
NO
NO
C
NC
NC
C
NO
NO
C
NC
NC
C
NO
C
+
+
+
T
T
COM
120
240
OUT-1
SENSOR A
SENSOR B
SENSOR C
T775 BUS
DIGITAL INPUT
DIGITAL OUTPUT
ALARM
24 VAC
T775P
T
T
BOILER 1
TO SENSOR ON
SUPPLY PIPING
TO OUTDOOR
AIR SENSOR
120 VAC FROM DISCONNECT
T
T
BOILER 2
OUT-2
OUT-4
OUT-3
LINE POWER
T
T
T
T
COMMON NOT REQUIRED ON SOME THERMOSTAT MODELS.
GROUND REQUIRED BUT NOT SHOWN FOR DRAWING CLARITY. VERIFY WIRING
CONFORMS TO LOCAL CODE.
1
2
BOILER
BOILER
SYSTEM PUMP (PC3F-SERIES
AQUAPUMP OR EQUIVALENT)
MCR37975
2