BASO GM7000 User Manual

Installation Instructions GM-7000
Issue Date November 9, 2012

GM-7000 Series CE Approved Gas Control Valve

Installation

IMPORTANT: These instructions are intended as a

guide for qualified personnel installing or servicing
BASO Gas Products. Carefully follow all instructions
in this bulletin and all instructions on the appliance.
Limit repairs, adjustments, and servicing to the
operations listed in this bulletin or on the appliance.

!

WARNING: Risk of Fire or Explosion.

The system must meet all applicable local, national,
and regional regulations. Improper installation may
cause gas leaks, explosions, property damage, and
injuries.

4. Compare the voltage on the valve with the power
source voltage to ensure the correct unit is being
installed.

5. Mount the valve. The GM-7000 valve may be
mounted on a horizontal manifold with the
magnetic operators (solenoid coils) pointed up
(vertical) or in any position not exceeding 90°
from the vertical (Figure 1). The valve may also
be mounted on a vertical manifold in any position
around its axis. Do not install the solenoid coils
upside

down. Install vertically wherever possible.

6. If you desire to measure the outlet pressure, use
the bottom cast pressure test fitting.

90° Maximum

from Vertical

90° Maximum
from Vertical

!

WARNING: Risk of Fire or Explosion.

To prevent leakage of upstream gas, shut off the gas
supply at the main manual shutoff valve before
installing or servicing the GM-7000 valve. 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.

Mounting

!

CAUTION: Risk of Equipment Damage.

To prevent damage to the valve when mounting to
pipework, do not use a wrench on any surface other
than the casting flats provided at the inlet and outlet
ends of the valve body.

To install the GM-7000 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.

Limited Horizontal and Vertical

Vertical mounting may
be 360º ar ound its axis
with the gas flow either

up or dow n, but always in
the direction of the arrow.

Figure 1: GM-7000 Mounting Positions

7. Install the valve on the manifold; ensure the gas
flows through the valve body in the direction
indicated by the arrow on the body. If the valve is
installed with the gas flow in the opposite
direction of the arrow, leakage can occur.

© 2012 BASO Gas Products 1

Part No. BASO-INS-GM7000, Rev. F www.baso.com

Note: If installing a valve with threaded

connections, use an approved pipe joint
sealing compound on the male threads
before assembly. An optional thread
lubricant may have been factory applied to
the first two or three threads of the inlet
and outlet to avoid galling. Make sure that
excess compound is removed after
mounting. Threads of 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.

8. Connect the pilot tubing (when necessary) to the
threaded pilot connection on the underside of the
valve body (Figure 2) and run the tube to the pilot
burner within the appliance. Connect the pilot
tube to the valve with an optional compression
fitting.

Outlet P r essure
T ap Connection

Pilot Tube

Connection

Figure 2: Underside of Valve with

Direct-Acting Regulator

9. Check for leakage before making any valve
adjustments.

a. Shut off the gas at the main manual shutoff

valve and open the pressure connection
between the manual shutoff valve and the
GM-7000 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. See the Wiring section
for specific wiring instructions.

11. To measure the outlet pressure, by apply power
to the valve and energizing both valve solenoids.
Use the outlet pressure tap connection on the
underside of the valve body to monitor the outlet
pressure. The outlet pressure tap is a bleed hole
with a cast spigot, sealed with a threaded brass
needle screw (Figure 2). To measure the outlet
pressure, turn the screw in a counterclockwise
direction one or two turns and fit a 9 mm diameter
flexible tube over the cast spigot. After all valve
adjustments have been made and the desired
outlet pressure has been obtained, remove the
flexible tube. Tighten the needle screw by turning
it clockwise with a slotted screwdriver until hand
tight, sealing the bleed hole.

12. Check for leakage at the bleed hole. Paint the
bleed hole with a rich soap and water solution (or
use acceptable gas leak detection equipment). If
bubbles occur, this is an indication of a gas leak.
To stop a leak, tighten the needle screw. Replace
the valve if the leak cannot be stopped.

Note: If installing a valve with a pressure

regulator, set the valve to the desired
outlet pressure. See the Regulator
Adjustment section for specific adjustment
procedures. After setting the valve outlet
pressure, ensure that the leak-limiting seal
cap is replaced (Figure 3).

13. Observe at least three complete operating cycles
to ensure that all components are functioning
correctly before leaving the installation.

2 GM-7000 Series CE Approved Gas Control Valve Installation Instructions