1) Boiler Contact
(See fig. e)
Boiler terminals (15 and 16) are an isolated output. No power
is available on these terminals from the control.
• Use terminals as switch to make or break the boiler circuit
• When the SYSTEMpro 311 requires the boiler to fire, contact
closes between terminals 15 and 16
2) DHW Pump/Valve Contact
(See fig. f)
DHW P6/Vlv terminals (13 and 14) are an isolated
output. No power is available on these terminals from the
control.
• Use terminals as switch to either make or break power to
DHW pump or valve
• As an isolated contact it may switch a voltage between 24
VAC and 240 VAC
3) Primary Pump Contact (Boil P3)
(See fig. g)
Boil P3 output terminal (8) is a powered output. When relay in
the SystemPro 311 closes, 120 VAC is provided to Boil P3
terminal (8) from Power L terminal (7).
• To operate primary pump, connect one side of primary pump
circuit to terminal (8) and second side of pump circuit to
neutral N terminal (6) side of 120 VAC power supply
4) Boiler Demand Pump (Boil Dem Pmp P7)
(See fig. h)
Boil Dem Pmp P7 terminals (9 and 10) are an isolated output.
No power is available on these terminals from the control.
• Use terminals as a switch to make or break power to the
boiler system pump
• As an isolated contact, it may switch a voltage between
24 VAC and 240 VAC
Output Connections (1-7)
24
INST
ALLA
TION
INSTALLATION - Step 6 - Electrical Connections to the Control
6
L
Boil
P3
Power
120 VAC
8
N
7
Boil Dem
Pmp P7
9 10
120 VAC
L
N
g
h
Boiler
15 16
DHW
P6/Vlv
13 14
24 to 240 VAC
or
e
f
Summary of Contents for SYSTEMpro 311
Page 1: ...SYSTEMpro 311 Installation Manual...
Page 90: ...88 APPENDIX II APPENDIX II SYSTEMpro 311 Menu Tree...
Page 91: ...89 APPENDIX II APPENDIX II SYSTEMpro 311 Menu Tree...
Page 92: ...90 APPENDIX III APPENDIX III Application Drawings...
Page 93: ...91 APPENDIX III APPENDIX III Application Drawings...
Page 94: ...92 APPENDIX III APPENDIX III Application Drawings...
Page 95: ...93 APPENDIX III APPENDIX III Application Drawings...
Page 96: ...94 APPENDIX III APPENDIX III Application Drawings...
Page 97: ...95 APPENDIX III APPENDIX III Application Drawings...
Page 98: ...96 APPENDIX III APPENDIX III Application Drawings...
Page 99: ...97 APPENDIX III APPENDIX III Application Drawings...
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