BASO H43 User Manual

Installation Instructions H43
Issue Date August 20, 2008

H43 Series BASO®

Automatic Pilot Valve with Manual Shutoff

Applications

The H43 Series BASO valve is a combination A valve
and automatic pilot valve. A manual valve handle with
On, Off, and Pilot positions allows operation of the
valve without a thermostat. Applications include room
heaters, wall furnaces, and commercial cooking.

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

Technical Specifications section.

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.

Note: In applications that do not require electrical
power, disregard the previous caution.

!

WARNING: Risk of Explosion or Fire.
Shut off the gas supply at the main manual shutoff
valve before installing or servicing the H43. 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.

To install the H43 valve:

1. Shut off power to the appliance (if applicable).

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

3. Ensure that the gas flows through the valve body
in the direction indicated by the arrow on the
valve body. If the valve is install with the gas flow
in the opposite direction of the arrow, 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 H43 may
be damaged in the mounting process if a wrench is
used on any other surface. Using a wrench
incorrectly may void the warranty.

4. Mount the valve to the pipework. Mount the H43
valve in any convenient position with the reset
button and manual valve handle accessible. Use
an approved pipe joint sealing compound on the
male threads before assembly. Remove excess
compound after mounting the valve to the
pipework. 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 needs to be installed in accordance with the
National Fuel Gas Code NFPA 54 (Figure 1).

© 2008 BASO Gas Products 1

Part No. BASO-INS-H43, Rev. A www.baso.com

5. Attach the thermocouple securely to the pilot
burner, and screw the terminal end to the BASO®
power unit terminal on the valve. Make sure this
connection is clean. Tighten the thermocouple
lead nut finger tight, plus a maximum of 1/8 turn.
Do not overtighten.

6. Attach the pilot gas line to the pilot burner fitting
and the pilot gas connection of the H43 valve.

!

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.

7. 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 H43
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.

8. Perform the Checkout section before leaving the
installation.

Shutoff Valve

3 in. (76.2 mm)

Sediment Trap

X

indicates possible

locations f or other cont rols.

Reset Button

X

Thermocouple

Lead

Pilot Burner

Gas Line

Handle and

Lock Pin Assembly

X

Figure 1: Typical H43 Installation

fig1

2 H43 Series BASO Automatic Pilot Valve with Manual Shutoff Installation Instructions