L62AA
BASO Safety Shutoff Device
Installation
Instructions
5
Technical Data
Product
L62AA
BASO Safety Shutoff Device
100%
Shutoff
No
Conduit
Opening
1
or 2 as Special
24/25
VAC 125 VAC 250 VAC 230 VDC Motor Rating 125/250 VAC
Switch
Contacts
Electrical
Specifications
*
8 A 3 A 0.06 A 1/4 hp
Ambient
Temperature
Range
-40
to 150°F (-40 to 66°C)
Reset
Manual
Switch
Action
SPST
Type
of Gas
Natural
Packaging
Bulk
pack supplied to original equipment manufacturer (individual pack optional).
Bulk
Pack Quantity
30
Weight
24
lb (10.9 kg)
Agency
Listings
CSA
Certificate Number 229521-1656085
UL
File Number MH2926
Specification
Standards
ANSI
Standard Z21.20
CAN1-6.4
UL
Standard 372
*Switch
can be used on 24/25 VAC installation.
Performance
specifications are nominal
and
conform to acceptable industry standards.
All
agency certification of BASO products
is
performed
under
dry and controlled indoor environmenta
l
conditions. Use of BASO pr
oducts
beyond these conditions
is
not recommended and m
ay
void
the
warranty. Product must be protected if exposed to water (dri
pping,
spraying, rain, etc.) or other harsh environments. The o
riginal
equipment
manufacturer or end user is responsible for the corr
ect
application of BASO products.
Consult
BASO Gas Products LLC f
or
questionable
applications. BASO Gas Pr
oducts
LLC shall not be liable for damages or
product
malfunctions resulting from misappl
ication
or
misuse
of its products.
Refer
to the
L61,
L62 Series BASO Safety Shutoff De
vice
Product Bulletin (BASO-PB-L61/L62)
for
necessary information on operating and
4
L62AA BASO Safety Shutoff Devi
ce Installation Instructions
Repairs and Replacement
Check the millivoltage output
of the thermocouple and
milliampere dropout range at the BASO power unit
terminal to see that they meet the values in
Table 1 and Table 2 If the readings do not meet these
values, replace the thermocouple and/or the safety
shutoff device.
Table 1: Thermocouple Output
Thermocouple mV Range
Lead Type
Turn
Down
Normal
Not Less
Than
K15
4 mV 20-28 15
K16
4 mV 25-35 17
K19
4 mV 25-35 17
Table 2: L62AA Dropout Range
mA Range of Power Unit Assembly
Low High
100 300
Pilot Servicing
If pilot flame problems occur, check the following:
•
If the pilot flame burns yellow it may be due to dirt
or lint covering the lower portion of the pilot
burner. Remove dirt and lint using a soft brush or
a vacuum.
•
A flame approximately 1/2 in. (12.7 mm) high must
surround the thermocouple tip (see Figure 3
•
Because this is an electrical connection, the
thermocouple lead
connection to the BASO power
unit must be clean and free of grease.
Approximately
1/2 in. (12.7 mm)
Figure 3: Flame Position
Replacement Procedure
!
WARNING: Risk of Shock.
Avoid electrical shock and equipment damage by
disconnecting the electrical power before replacing
or rewiring the safety shutoff device.
!
WARNING: Risk of Fire or Explosion.
Turn off the gas at the main manual shutoff valve
next to the appliance before loosening any gas
connections.
!
WARNING: Risk of Fire or Explosion.
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation.
When necessary, replace the safety shutoff device as
follows:
1. Turn off power to the appliance.
2. Close the main manual shutoff valve and the pilot
valve.
3. Disconnect the thermocouple lead from the safety
shutoff device.
4. Remove the cover.
5. Disconnect and label the wires from the two wire
terminals and remove the device from the
appliance.
6. Replace with the new BASO L62AA according to
the instructions in the
Installation
section.
7. Perform the
Checkout
section before leaving the
installation.
Repairs
Field repairs
must not
be made to the L62AA safety
shutoff device. If the ther
mocouple meets the output
listed in Table 1 and the valve does not function,
replace the entire device. Any attempt to repair this
assembly voids the manufacturer’s warranty. For a
replacement safety shutoff
device, contact the nearest
BASO Gas Products distributor
