47
4. If using DHW, connect the domestic hot water pump to the terminals marked DHW HOT, DHW NEUT,
DHW GND. The connections shown are suitable for a maximum continuous pump draw of 3 amps at 120
volts. If a pump requires more current or voltage than the 120 volts supplied, an external motor starter or
contactor will be required.
D. ALARM CONNECTIONS
The Mod Con control includes a dry contact alarm output. This is
an SPDT circuit, rated at 5 amps at 120 volts. This contact can
be used to activate an alarm light or bell, or notify a building
management system if the boiler goes into a lockout condition.
The circuit between the ALARM COM and NC terminals is
closed during normal operation and the circuit between ALARM
COM and NO is open during normal operation. The connections
depicted in Figure 24 show two 120 volt lights connected to the
alarm terminals. One light will be on when the boiler is in normal
mode and the other light will turn on when the boiler is in lockout
mode.
E. LOW VOLTAGE CONNECTIONS FOR STANDARD BOILER
1. All low voltage cables should enter the electrical junction box through the provided knock out holes
shown in Figure 23.
2. Connect all low voltage field devices in the low voltage terminal strip located in the electrical junction
box (shown in Figure 24).
Figure 23
Содержание Mod Con 300 HL
Страница 13: ...13 Figure 2 ...
Страница 31: ...31 Figure 13 ...
Страница 37: ...37 J SIDEWALL VENTING DIAGRAMS Figure 16 Sidewall Venting with Tee and Coupling ...
Страница 38: ...38 Figure 17 Sidewall Venting Diagrams ...
Страница 39: ...39 K VERTICAL VENTING DIAGRAMS Figure 18 Two Pipe Roof Venting with Tee and Coupling ...
Страница 40: ...40 Figure 19 Roof and Sidewall Venting with Stainless Steel ...
Страница 44: ...44 E GAS VALVE Figure 21 ...
Страница 45: ...45 Figure 22 ...
Страница 55: ...55 Figure 28 Mod Con Internal Connection Diagram ...
Страница 73: ...73 Figure 32 ...
Страница 74: ...74 Figure 33 ...
Страница 75: ...75 Figure 34 ...
Страница 76: ...76 Figure 35 ...
Страница 77: ...77 Figure 36 ...
Страница 80: ...80 ...
Страница 81: ...81 ...
Страница 82: ...82 MAINTENANCE NOTES ...