BASO BGQ15HAA-1 - Manual (Page 7)

BGQ15HAA-1 Retrofit Spark Ignition System Installation Instructions 7
6. Ensure the thermostat contacts are open and remove
the toggle switch.
7. Remove the microammeter and reconnect the sensor
probe lead to Terminal 8 on the ignition control.
8. Shut off the gas supply at the main manual shutoff
valve, disconnect the manometer, and replace the
pressure tap plug.
Note: The thermostat heat anticipator setting
should be set for 0.4 ampere (current draw of the
BGQ15HAA-1 gas valve). When using an automatic
vent damper, add the current draw of the vent
damper to the 0.4 ampere of the gas valve. The
transformer should be checked to make sure it has
sufficient capacity to operate the additional load.
9. Reopen the main manual shutoff valve.
10. Perform the Checkout section before leaving the
installation.
Thermostat Heat Anticipator Settings
The anticipator setting is normally equal to the ignition
system current, plus that of the pilot and main valve.
Due to variations in appliance wiring and valves, it is
advisable to measure the actual current draw of the
heating system at the thermostat location. Measuring this
current can be accomplished by opening the thermostat
contacts (lowering the setpoint) and installing an AC
ammeter across the terminals, or by using a clamp-on
ammeter with a 10-turn multiplier attached to the terminals
(Figure 6).
!
WARNING: Risk of Personal Injury. Do not
take a current draw measurement unless the appliance
is in the run condition. Measuring the current with an
ammeter will energize the system. This may cause the
appliance to proceed to the run condition unexpectedly,
and may result in severe personal injury or death.
Ten Turns
W R
W
R
AC Ammeter Low
Scale Setting
Clamp-on Ammeter
(Divide reading by ten.)
To
Heating
System
To
Heating
System
Figure 6: Measuring the Thermostat Current
Regulator Adjustment
!
WARNING: Risk of Explosion or Fire. Do not
adjust the minimum flow rate of the valve below the
minimum safe working rate of the appliance. This may
cause gas leaks, which can lead to an explosion or fire,
and may result in severe personal injury or death.
IMPORTANT: Refer to and follow any specific
instructions issued by the appliance manufacturer with
regards to servicing their equipment.
The pressure regulator is adjustable and has been factory
set at 3.5 in. W.C. (8.75 mbar). If a different setting is
desired, follow these instructions.
1. Shut off all gas to the appliance.
2. Turn the thermostat to the lowest setting or Off
position.
3. Remove the pressure tap plug at the valve outlet or
in the manifold pipe downstream of the valve.
4. Install a manometer or pressure gauge suitable for
measuring the desired orifice pressure.