Install Instructions

ManualsBrandsHydrolevel ManualsBoiler System AccessoriesSafgard 24 Heavy Duty Hot Water Boiler Low Water Cut-Off, 24 VAC, EL1214-SV 3/4" NPT Probe

WARNING: To prevent

electrical shock or equip-

ment damage, power must

be off during installation or servicing

of the control. To prevent serious

burns, the boiler should be thorough-

ly cooled before installing or servic-

ing control. Only qualified personnel

may install or service the control in

accordance with local codes and

ordinances. Read instructions com-

pletely before proceeding.

HOT WATER BOILERS: Probe must be

installed at or above the minimum safe

water level established by the boiler

manufacturer. The probe may be

installed directly in the boiler if a suit-

able tapping is available (A), in the riser

(B), or in the header (C) or (D).

IMPORTANT: To assure proper

drainage, pipe diameter should be no

less than 1" on installations in vertical

piping and no less that 1

⁄4" on installa-

tions in horizontal piping.

TEE MOUNTING: Model 24SV is equipped with the shorter EL1214-SV probe suitable for mounting

in standard reducing tees. For other 24 Series controls, a fabricated tee can be used. Make sure that

the tee drains thoroughly when water falls below it and that it conforms to the spacing requirements

described in Step 3. Safgard tees are also available to accommodate all probe models (See page 4).

Loosen the two control box cover bind-

ing head screws and remove the cover.

Slide keyhole slots over probe mounting

screws and tighten screws (with either a

1/4" hex head driver or flat screwdriver).

Connect the ring terminal wire lead to the probe terminal

stud and secure with the lock washer and wing nut provided.

With the power removed,

proceed with installation and

wiring according to Method A or B described on next page.

Check to insure 1/4" clearance from the probe to

any surface within the boiler or tee. Apply pipe

sealing compound to threads.

Note: Use of Teflon tape is not recommended.

24 Series

Low Water Cut-Off

24 VAC Operating Voltage

Heavy-duty electro-mechanical design for long life.

Automatically shuts off burner in a low water condition to

prevent boiler damage.

Low maintenance. No moving parts to wear stick or hang up,

as in float devices.

Rugged construction. Designed for the heating professional.

1. Where To Install

2. Tee Options

4. Control Mounting

3. Probe Installation

MINIMUM

WATER LEVEL

HOT WATER

BOILER

1/4"

STANDARD

REDUCING TEE

(SV Models Only)

FOEM-TEE

(160psi)

1214C-2 TEE

(250psi)

FABRICATED TEE

HOT WATER BOILER

INSTALLATIONS

Summary of content (4 pages)

PAGE 1
Heavy-duty electro-mechanical design for long life. Automatically shuts off burner in a low water condition to prevent boiler damage. Low maintenance. No moving parts to wear stick or hang up, as in float devices. Rugged construction. Designed for the heating professional. 24 Series Low Water Cut-Off 24 VAC Operating Voltage WARNING: To prevent electrical shock or equipment damage, power must be off during installation or servicing of the control.
PAGE 2
WIRING METHOD A: SAME POWER SOURCE FOR CONTROL AND BURNER CIRCUIT. A1 A2 䊴 A1 Connect the hot lead of the input voltage (24 VAC, 60 HZ) to terminal 1. Connect the neutral lead to terminal 2. 24 VAC, 60 HZ must be supplied to terminals 1 and 2 for internal operation of the control. 2 1 P1 2 A P2 䊳 Connect terminal 2 to burner circuit neutral. Connect terminal P2 to burner circuit in series with other limit controls. Consult boiler manufacturer instructions for proper terminal connections.
PAGE 3
OPERATIONAL TEST PROCEDURE Important: Do not run boiler unattended until the following procedure is completed. 1. After wiring is complete and prior to raising the water level above the probe set the thermostat to call for heat. The burner should not fire. IMPORTANT: If the boiler fires with no water at the probe, immediately shut down the boiler and refer to Trouble Shooting Instructions below. 2. Proceed to fill the system with water. When water reaches probe position burner should fire.
PAGE 4
FITTINGS Controls equipped with the EL1214-SV Probe can be mounted in standard reducing tees (supplied by others). Safgard manifolds, listed below, can be used with all probe models.