BASO BGA158 User Manual

Installation Instructions BGA158
Issue Date August 24, 2011

BGA158 Series CE Approved Class A

Shutoff Gas Valve

Applications

The BGA158 Series shutoff gas valve is an electrically
operated gas valve that automatically open and close
on a demand signal from a thermostat or other
controlling device. Typical applications include
heaters, wall furnaces, commercial cooking
equipment, and similar applications. The BGA158 can
be used with natural gas and LP gas at pressures up
to 2 psi. Its compact size permits installation in space
restrictive applications.

!

WARNING: Risk of Explosion, Fire, or

Electric Shock. Label all wires before they are

disconnected when replacing or servicing the
BGA158. Wiring errors can cause improper or
dangerous operation and may result in an explosion,
fire, or electric shock leading to severe personal
injury or death.

Installation

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.

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

!

CAUTION: Risk of Electric Shock.
Disconnect power supply before making electrical
connections to avoid electric shock.

!

WARNING: Risk of Explosion or Fire.
Shut off the gas supply at the main manual shutoff
valve before installing or servicing the BGA158.
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.

IMPORTANT: Verify that the valve is installed
only in applications where the specified maximum
ambient (surface) temperature and maximum
operating pressure does not exceed the limits in the
Technical Specifications section.

1. To install the BGA158 valve:

2. Shut off power to the appliance.

3. Shut off the gas at the main manual shutoff valve.

4. Label each wire with the correct terminal
designation prior to disconnection.

5. Compare the voltage on the valve with the power
source voltage to ensure the correct unit is being
installed. For valves with 25-volt coils, use a
National Electrical Code (NEC), Class 2
transformer.

Note: The transformer must be mounted to a

grounded metal enclosure.

6. Ensure that the gas flows through the valve body
in the direction indicated by the “IN” and “OUT” on
the valve body. If the valve is installed with the gas
flow in the opposite direction, leakage can occur.

IMPORTANT: Do not use a wrench on any
surface other than the casting flats provided at the
inlet and outlet ends of the valve body. The BGA158
may be damaged in the mounting process if a wrench
is used on any other surface. Using a wrench
incorrectly may void the warranty.

© 2011 BASO Gas Products
Part No. BASO-INS-BGA158, Rev. C www.baso.com

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7. The BGA158 valve may be mounted on a
horizontal manifold with the solenoid coils pointed
up (vertical) or in any position not exceeding 90°
from the vertical. The valve may also be mounted
on a vertical manifold in any position around its
axis (see Figure 1). Do not install the solenoid coil
upside down. Install vertically wherever possible.

90° Maximum

from Vertical

Limited Horizontal and Vertica l

Vertica l mounti ng may be

360º aroun d its axis

with the gas flow either

up or do wn.

90° Maximum
from Vertical

Figure 1: BGA158 Valve Mounting Positions

8. Installer must be a trained, experienced, flame
safeguard control technician. Threads of the pipe
and nipples must be smooth and free of tears and
burrs. Steam clean all piping to remove foreign
substances such as cutting oil or thread chips. A
sediment trap should also be installed in
accordance with the National Fuel Gas Code
NFPA 54 (see Figure 3). Mount the valve to the
pipework, use a quality rated pipe tape, UL listed
seal material rated for gasoline, propane, and
other gases. If not available, a quality grade pipe
dope, a light amount on the male threads, starting
two threads away from the first engageing thread.
If pipe dope lodges on the valve seat, it will
prevent proper closure. Remove excess
compound after mounting the valve to the
pipework.

!

WARNING: Risk of Explosion or Fire.
Verify that there are no gas leaks by testing with
appropriate equipment. Never use a match or lighter
to test for the presence of gas. Failure to test properly
can lead to an explosion or fire and may result in
severe personal injury or death.

9. Check for leakage:

a. Shut off the gas at the main manual shutoff

valve and open the pressure connection
between the manual shutoff valve and the
BGA158 valve.

b. Connect air tubing with a maximum pressure

of 1-1/2 times the valve’s maximum operating
pressure (as indicated on the valve) to the
opened pressure connection.

c. Paint all valve body connections with a rich

soap and water solution.
If bubbles occur, this is an indication of a leak.

To stop a leak, tighten joints and connections.
Replace the part if the leak cannot be stopped.

If bubbles do not occur, remove the air tubing
and close the pressure connection.

10. Make wiring connections. Refer to the Wiring

section for specific wiring instructions.

11. Perform the Checkout section before leaving the

installation.

2 BGA158 Series CE Approved Class A Shutoff Gas Valve Installation Instructions