BASO H15 User Manual

Installation Instructions
Issue Date February 22, 2013

H15 Series BASO® 100% Shutoff,

Automatic Pilot Valve

Application

The H15 Series pilot valves provide safe lighting and
complete shutoff of pilot and main burner gas on a
variety of domestic and commercial gas burning
equipment. Applications include room heaters, wall
heaters, unit heaters, central heating equipment, crop
dryers, dish washing machines, industrial ovens, and
degreasing equipment.

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

Installation

IMPORTANT: Only qualified personnel should

install or service BASO Gas Products 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 Electrical Shock.

Disconnect power supply before making electrical
connections to avoid electrical shock

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

!

WARNING: Risk of Explosion or Fire.

Shut off the gas supply at the main manual shutoff
valve before installing or servicing the H15. 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 H15 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 main gas flow through the gas
valve body must be in the direction indicated by
either “IN” and “OUT” or the arrow on the valve
body. If the valve is installed 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 H15 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. The H15 valve
may be mounted in any convenient position. 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 should also be installed in accordance with
the National Fuel Gas Code (ANSI Z223.1). (See
Figure 1 and Figure 2.)

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.

© 2013 BASO Gas Products
Part No. BASO-INS-H15, Rev. E www.baso.com

1

6. Pilot gas connections.
a. Internal Pilot Gas Valve Models receive pilot

gas internally from the valve body.
Note: Pilot gas flow comes out of either gas

valve top housing ports.
On internal pilot gas valve models, plumb the

pilot burner fitting to either of the pilot gas
ports on the valve. Plug the unused pilot gas
port on the gas valve. See Figure 1 and
Figure 2.

b. External Pilot Gas Valve Models receive

pilot gas from an external gas source.

!

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
H15 valve.

Note: Pilot gas flow through the gas valve top
housing can be in either direction as indicated
by the arrows.

On external pilot gas valves models, plumb
the pilot gas line from an external gas source
to either pilot gas port on the gas valve. Plumb
the other pilot gas port to the pilot burner
fitting. See Figure 3.

c. Gas valve models with black arrows are

limited to applications up to 175˚F (80˚C).

d. Gas valve models with red arrows are limited

to applications up to 300˚F (150˚C).

!

WARNING: Risk of Explosion or Fire.

Never connect an external gas line to an internal
pilot gas model. Pilot gas would flow freely in one
port and out the other, which could lead to an
explosion or fire and may result in severe personal
injury or death.

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 before leaving the
installation.

2 H15 Series BASO 100% Shutoff Automatic Pilot Valve Installation Instructions