BASO L61LL User Manual

Installation Instructions

Issue Date January 21, 2015

© 2015 BASO Gas Products 1

Part No. BASO-INS-L61, Rev. B www.baso.com

L61LL BASO® Safety Shutoff Device

Installation

!

WARNING: Risk of Explosion or Fire.

Do not use the L61LL in Liquefied Petroleum
(LP) gas applications. The L61LL is for use with

natural gas only. Pilot gas is not 100% shut off and
will continue to flow with the loss of pilot flame. Use
of LP gas may cause gas accumulation and may
result in severe personal injury or death.

IMPORTANT: Only qualified personnel should
install or service BASO® Gas Products. These
instructions are a guide for such personnel. Carefully
follow all instructions in this document and all
instructions for the appliance.

!

WARNING: Risk of Explosion or Fire.

Shut off the gas supply at the main manual shutoff
valve before installing or servicing the L61LL. Failure
to shut off the gas supply can result in the release of
gas during installation or servicing, which can lead to
an explosion or fire, and may result in severe
personal injury or death.

!

CAUTION: Risk of Electric Shock.

Disconnect power supply before making electrical
connections to avoid electric shock.

IMPORTANT: Make all gas installations in
accordance with applicable local, national, and
regional regulations.

To install the L61LL.

1. Turn off all power to the appliance.

2. Turn off the gas at the main manual shutoff valve
adjacent to the appliance.

IMPORTANT: Do not loosen or tighten the
brass hex nut that fastens the brass therminal
bushing to the switch housing. The machined flats
on the terminal bushing must be parallel to the flats
on the switch housing. If not, the switch power unit
may distort and cause the safety switch to fail.

3. Remove the metal snap-on cover from the L61LL
(not the brass hex nut).

4. Mount the L61LL on a vertical surface with the
thermocouple connection positioned downward.

5. Push the circuit wires through the conduit opening
on the bottom of the L61LL, strip the ends of the
wires just enough to put the bare wire under the
terminal screws, and connect the circuit wires
according to the appliance manufacturer’s
instructions or the wiring information on the label
(see Figure 1).

!

WARNING: Risk of Explosion or Fire

Do not attach both wires to one terminal on the
L61LL. Doing so bypasses and eliminates all safety
features provided by the L61LL and can lead to an
explosion or fire, and may result in severe personal
injury or death.

!

WARNING: Risk of Explosion or Fire

Verify that this device is wired in series electrically
with thermostats and other appliance operating
controls. Wiring the device in parallel with such
controls will defeat the safety features of this device
and may result in severe personal injury or death.

2 L61LL BASO Safety Shutoff Device Installation Instructions

R

C

US

ELECTRICAL RATING:
CIRCUIT 1-2
8A. AT 120 V.A.C.
4A. AT 240 V.A.C.
1/4HP,
120/240 V.A.C.
CIRCUIT 1-3
125VA PILOT DUTY
120/240 VOLTS AC

L61LL-1

CIRCUIT #1-#2 #1-#3
PILOT ON CLOSED OPEN
PILOT OFF OPEN CLOSED

1

2 3

Do not loosen brass hex nut.
Must be tight to maintain continuity.

Figure 1: L61LL Product Label

6. Replace the metal snap-on cover (do not loosen
the brass hex nut).

7. Attach the thermocouple securely to the pilot

burner, and screw the terminal end to the BASO®
power unit terminal on the L61LL. Make sure that
this connection is clean. Tighten the thermocouple
lead nut finger tight plus 1/8 turn maximum. Do
not overtighten.

Power Source

Transformer

Thermostat

X

X

L61LL

Safety Shutoff Device

Pilot

Valve

( Valve)B

Basotrol

Valve

Thermocouple

Lead

Pilot Burner

Gas Line

X indicates possible

locations for other controls.

76.2 mm (3 in.)
Sediment

Trap

Main Manual
Shutoff Valve

( Valve)A

BASO

Power Unit

Terminal

Figure 2: Typical L61LL Installation