Operating Faults; Air Gate Adjustment - Riello G120 Installation, Use And Maintenance Instructions

OPERATING FAULTS

The integrated control system is self-checking.
The cycle from start up to flame establishment, takes approximately 70 seconds.
The burner will go into lockout under the following circumstances:
a) Burner fails to ignite;
b) The ionization probe is grounded;
c) Opening of the air pressure switch or the normally open contacts of the air pressure switch not making.
Should overheating of the appliance occur, shut off the manual gas valve to the burner.
Do NOT shut off the switch to the circulating pump or blower fan.
SHUT DOWN PROCEDURE
Switch off electrical power to the unit. Close the manual supply gas valve.
START UP PROCEDURE
See page 7.
NOTE:
If an external electrical source is utilized, the conversion burner, when installed, must be electrically grounded in
accordance with local codes.
In the absence of local codes, refer to the National Electrical Code, ANSI/NFPA 70-1990.
In Canada follow the Canadian Electrical Code Part 1 CSA C22.1.

AIR GATE ADJUSTMENT

To regulate the combustion air, adjust the manual air gate (3), by loos-
ening the locking screws (4).
Once the optimal adjustment is reached, tighten the locking screws
(4).
EXAMPLE SETTING - (for natural gas)
To set the air intake for a desired burner output of 93,000 Btu/hr, use
TABLE 1 to determine the correct air gate setting.
In this case, the setting would be 1.9 for natural gas.
Turn the manual air gate (3) until the arrow points to 1.9 on the scale.
Tighten locking screws (4).
All settings in TABLE 1 are obtained with zero (0) pressure in the
combustion zone and at normal operating temperatures. i.e., steady
state hot conditions.
Note:
Burner must be fired ONLY with fuel that is listed on the burner serial label.
11 GB
4
D5231
3
4
2903332