Install Instructions

Part number 550-100-131/0715

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GAS-FIRED WATER BOILER — Boiler Manual

4OCAUSEAUTOMATICRESET4ERMINAL"LOCK0(EVG control module, left side)

%6'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 62, page 57).

See Figure 62, page 57 for details

H. Low water cutoff – WHEN REQUIRED

4ERMINAL"LOCK0(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 62, page 57).

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.

See Figure 62, page 57 for details

I. Alarm contacts – OPTIONAL

4ERMINAL"LOCK0(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.

See Figure 62, page 57 for details

J. Additional heat demand contacts – OPTIONAL

4ERMINAL"LOCK0(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.

See Figure 62, page 57 for details

Field wiring (see wiring diagram, Figure 62, page 57)(continued)