Baso H17 Series User manual

Installation Instructions
Issue Date December 10, 2019
H17 Series BASO® Automatic Pilot Valve
© 2019 BASO Gas Products 1
Part No. BASO-INS-H17, Rev. C www.baso.com
H17 Series BASO® Automatic Pilot Valve
Application
The H17 Series pilot valves provide complete shutoff
in the event that the flame heating the thermocouple is
extinguished. Applications include room heaters,
infrared heaters, salamanders, and refrigerators.
H17 models are also available with a higher ambient
temperature, up to a maximum of 300F (150C), for
use on commercial ovens, broilers, and other
applications.
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 above caution.
!
WARNING: Risk of Explosion or Fire.
Shut off the gas supply at the main manual shutoff
valve before installing or servicing the H17. 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 pressures do not exceed the limits in the
Technical Specifications section.
To install the H17 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 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 H17 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 H17 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.
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.

H17 Series BASO® Automatic Pilot Valve
© 2019 BASO Gas Products 2
Part No. BASO-INS-H17, Rev. C www.baso.com
6. Attach the pilot gas line to the pilot burner fitting
and to the pilot gas outlet of the H17 valve. In
applications that light the main burner directly, the
pilot tap should be fit with a suitable plug.
!
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
H17 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 pipe and pilot tube 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
Reset Button
X
X
3 in. (76.2 mm)
Sediment Tarp
Thermocouple
Lead
Pilot Burner
Gas Line
X indicates possible
locations for other controls.
fig1
Figure 1: Typical H17 Installation

H17 Series BASO® Automatic Pilot Valve
© 2019 BASO Gas Products 3
Part No. BASO-INS-H17, Rev. C www.baso.com
Setup and Adjustments
Checkout Procedure
!
WARNING: Risk of Explosion or Fire.
Follow this or an equivalent checkout procedure
after installation. Before leaving the installation,
verify that the gas valve functions properly and that
the system has no gas leaks. Gas leaks can lead to
an explosion or fire, and may result in severe
personal injury or death.
!
WARNING: Risk of Explosion or Fire.
Keep hands and clothing clear when manually
lighting the pilot. Gas flows to both main and pilot
burners when reset button is pressed. Excess gas
can lead to an explosion or fire and may result in
severe personal injury or death.
Make sure all components are functioning properly by
performing the following test:
1. Test all joints and connections for leaks with a
rich soap and water solution. If leaks occur, see
Step 7 in the Installation section.
2. Close the manual shutoff valve and wait at least
5 minutes for unburned gas to escape from the
appliance, and then reopen the shutoff valve.
3. Push the reset button of the BASO power unit
and light the pilot burner, or the main burner in
applications without a pilot burner. Continue to
hold the reset button for 30 to 45 seconds or until
the pilot or main burner remains burning when
the reset button is released.
4. In applications that use a pilot burner along with a
thermostatically operated electric valve, set the
thermostat to the highest setting. The main
burner ignites from the pilot burner.
5. Set the thermostat to the lowest setting. The main
burner will extinguish.
6. Extinguish all flames by closing the manual
shutoff valve. Verify that the valve drops out
within 90 seconds.
7. Relight the pilot burner or main burner in required
applications.
8. 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. Step-by-step
procedures for these checks are included with the
Y99AB-4 BASO Test Kit Application Note
(Part No. 24-8711-838).
9. Observe at least three complete operating cycles
to make sure that all components are functioning
properly.
10. Return the thermostat to the desired setting
before leaving the installation.
Note: BASO recommends using only BASO
thermocouples that come from the original
equipment manufacturer to provide optimum
performance for your safety shutoff devise.
Table 1: Thermocouple Output
Thermocouple mV Ran
g
e
Lead Type Turn
Down Normal Not Less Than
K14 4 mV 20-28 15
K15 4 mV 20-28 15
K16 4 mV 25-35 17
K17 4 mV 30-40 25
K19 4 mV 25-35 17
Table 2: Dropout Range
Series Number mA Range of
Power Unit Assembl
y
Low Hi
g
h
H17_A 100 300
H17_B 50 165
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 this using a soft brush or a
vacuum.
A flame approximately 1/2 in. (12.7 mm) high must
surround the thermocouple tip.
See Figure 2.
Because this is an electrical connection, the
thermocouple lead connection to the BASO power
unit must be clean and free of grease.

H17 Series BASO® Automatic Pilot Valve
© 2019 BASO Gas Products 4
Part No. BASO-INS-H17, Rev. C www.baso.com
Approximately
1/2 in. (12.7 mm)
fig2
Figure 2: Flame Position
Repairs and Replacements
!
WARNING: Risk of Explosion or Fire.
Shut off the gas supply at the main manual shutoff
valve before installing or servicing the H17. 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.
Field repairs must not be made to the H17 valve. If
the thermocouple meets the output listed in Table 1
and the valve does not function, replace the entire
valve. Any attempt to repair this assembly voids the
manufacturer’s warranty. For a replacement valve,
contact the original equipment manufacturer or the
nearest BASO Gas Products distributor.
Technical Specifications
Product H17 Series BASO Automatic Pilot Valve
Maximum Operating
Pressure 0.5 psi (35 mbar)
V
alve Body Aluminum
Permissible Ambient
(Surface) Temperature -40 to 150F (-40 to 66C) standard models
-40 to 300F (-40 to 150C) high temperature models
Recommended
Thermocouple Lead
Lengths
K14: 36 or 72 in. (914 or 1,829 mm)
K15: 12 to 48 in. (305 to 1,220 mm)
K16: 12 to 72 in. (305 to 1,830 mm)
K19: 18 to 72 in. (457 to 1,830 mm)
Inlet/Outlet Pipe Size 1/8, 1/4, 3/8, and 1/2 in. NPT
Types of Gas Natural, Liquefied Petroleum (LP), or LP gas-air mixtures
Packaging Bulk pack supplied to original equipment manufacturer (individual pack optional)
Bulk Pack Quantity 60
Bulk Pack Weight 27 lb (12 kg)
Agency Listing CSA (AGA, CGA) Certificate Number 229521-1656088
UL File Number MH2926 (H17AA, BA, and CA only)
Specification Standards ANSI Z21.20, CAN1-6.4
ANSI Z21.21, CSA 6.5
UL Standard 372
Performance specifications are nominal and conform to acceptable industry standards. All agency certification of BASO products is performed
under dry and controlled indoor environmental conditions. Use of BASO products beyond these conditions is not recommended and may void
the warranty. Product must be protected if exposed to water (dripping, spraying, rain, etc.) or other harsh environments. The original
equipment manufacturer or end user is responsible for the correct application of BASO products. Consult BASO Gas Products LLC for
questionable applications. BASO Gas Products LLC shall not be liable for damages or product malfunctions resulting from misapplication or
misuse of its products.
Refer to the H17 Series BASO Automatic Pilot Valve Product Bulletin (BASO-PB-H17) for necessary information on operating and
performance specifications of this product.
450 East Horseshoe Road
PO Box 170
Watertown, WI 53094 www.baso.com
1-877-227-6427 (1-877-BASOGAS) Printed in U.S.A.