BASO H91 Series - Manual

Installation Instructions
Issue Date February 22, 2013
© 2013 BASO Gas Products 1
Part No. BASO-INS-H91, Rev. D www.baso.com
H91 Series BASOTROL® Shutoff Gas Valve
Applications
The H91 Series BASOTROL valves are two-wire,
electrically operated shutoff valves that automatically
open and close on a demand signal from a thermostat
or other controlling device. These valves can be used
for gas-fired appliances with a maximum operating
pressure of 0.5 psi (35 mbar [3.5 kPa]).
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 H91. 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.
!
WARNING: Risk of Explosion, Fire, or
Electric Shock. Label all wires before they are
disconnected when replacing or servicing the H91.
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.
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.
To install the H91 Series valve:
1. Shut off power to the appliance.
2. Shut off the gas at the main manual shutoff valve.
3. Label each wire with the correct terminal
designation prior to disconnection.
4. 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.
5. Ensure that the gas flows through the valve body
in the direction indicated by the “IN” and “OUT” or
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 H91 may
be damaged in the mounting process if a wrench is
used on any other surface. Using a wrench
incorrectly may void the warranty.