Weil-McLain Evergreen EVG 220 Manual page 56

®
gas
Field wiring
To cause AUTOMATIC reset: Terminal Block P13 #3 & #4 (EVG control module, left side)
EVG control will reset automatically after circuit is interrupted.
1. Remove factory-installed jumper and connect isolated contacts of external
limits across P13 pins 3 and 4 to cause the control to shut down the boiler on
limit opening, then automatically restart 150 seconds after the limit closes.
2. See drawing at right and wiring diagram (Figure 65, page 59).
H. Low water cutoff –
Terminal Block P12 (EVG control module, left side)
1. Install a low water cut-off when required.
2. Wiring Weil-McLain LWCO Kit:
a. When possible, use the Weil-McLain Low water cut-off kit listed in the
back of this manual. It includes a probe-type low water cut-off and pro-
vides a simple harness connection for the wiring.
b. Connect as shown at top right and in the control wiring diagram
(Figure 65, page 59).
c. The Weil-McLain Low water cut-off kit is included with the boiler.
3. Wiring another LWCO — must have isolated contact:
a. Other low water cut-offs can be used with the EVG only if the device uses
an isolated contact for the LWCO function.
b. Connect as shown at bottom right.
I. Alarm contacts –
Terminal Block P16 #4 & #5 (EVG control module, top left)
1. The control's alarm dry contact (P16, terminals 4 and 5) closes when the
boiler enters manual lockout only.
2. Connect these terminals for remote alarm notification.
3. Contact electrical ratings: 24VAC or less; 0.5 amp or less.
J. Additional heat demand contacts –
Terminal Block P16 #6 & #7 (EVG control module, top left)
1. The control module can be set to activate another heat source using its ad-
ditional heat demand dry contacts through terminal block P16 pins 6 & 7.
2. Connect these terminals to call for heat from the other heat source.
3. Contact electrical ratings: 24VAC or less; 0.5 amp or less.
4. Set the control to activate the heat demand contacts as needed.
5. See EVG Advanced Manual to configure.
– 56 –
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fired water boiler
(see wiring diagram, Figure 65, page 59)(continued)
WHEN REQUIRED
OPTIONAL
— 220/299/300/399 Boiler Manual
OPTIONAL
See Figure 65, page 59 for details.
See Figure 65, page 59 for details.
See Figure 65, page 59 for details.
See Figure 65, page 59 for details.
Part number 550-100-131/0120