Troubleshooting

Brute Mini Hydronic Boiler	Page 27

Caution

Two-stage Operating Control (BJV100-225 ONLY): Factory setting is 140°F (60°C). This setting is correct for most hydronic heating applications. Adjustments to this setting must be made by an authorized service technician.

2.Two-stage Temperature Control - BJVS 100- 225 are equipped with a two-stage temperature control which senses inlet water temperature. It is used to control the firing rate of the main burners, cycling the gas valve between low, high

and off.

3A. Ignition Control, BJVS - When the thermostat calls for heat and all limits are satisfied a pilot trial for ignition is initiated. If pilot is not established a 5 minute minimum delay is implemented prior to the next trial for ignition. This cycle repeats until pilot is established or the system is shut down manually.

BJVS 100-225 only - Once pilot is established the main valve is enabled and controlled by the two-stage temperature control.

BJVS 50-75 only - Once pilot is established the main valve will open until the limit circuit opens.

3B. BJVT Flame Control - The standing pilot BJVT models rely on a flame sensor on the gas valve. When the thermostat calls for heat and adequate pilot flame is sensed, the gas valve will open. The valve will remain open until the limit circuit opens.

4.Pilot Assembly

BJVS - The pilot assembly utilizes an electrode that is used to generate spark to ignite the pilot flame as well as sense flame presence.

BJVT - The BJVT pilot is lit manually and senses pilot flame via a thermocouple which generates a signal that allows the gas valve to open.

5.Hi-Limit Switch: Factory setting is 190°F (88°C). This setting is correct for normal operations, and should only be changed by an authorized service technician. Under no circumstances should the setting exceed 220°F (104°C).

6.Blocked Vent Switch - BJVS and BJVT boilers are equipped with a manual reset blocked vent switch designed to shut the boiler down in the event the vent is completely blocked. The switch is located in the draft diverter opening on the rear of the boiler.

7.Rollout Switch - BJVS and BJVT boilers are equipped with a manual reset rollout switch designed to shut the boiler down in the event a flame rollout situation occurs causing excessive temperatures. The switch is located on the burner cover.

SECTION 9.

9.1 General Boiler Troubleshooting

Table 8 lists some of the more common problems, causes and solutions encountered when running the boiler. Most problems occur when the boiler is being started for the first time after installation. Careful installation and maintenance will help ensure years of trouble free use from your Brute Mini boiler.

WARNING

SERVICING SAFETY

Some of the servicing procedures for the Brute Mini BJVS and BJVT boilers are hazardous because they involve fuel gas, electricity, moving parts and procedures which require testing or temporary bypass of safety controls. For this reason, the boiler must be serviced only by a qualified professional service technician.

IMPROPER SERVICE HAZARD

The Brute Mini BJVS and BJVT boilers incorporate unique design features. Incorrect service of this heater can result in personal injury or damage to property. To avoid such hazards, the boiler must be serviced only by a qualified professional service technician.

AVERTISSEMENT PRÉCAUTIONS LORS DES RÉPARTATIONS ET DE L’ENTRETIEN

Certaines procédures d’entretien et de réparation des appareils de chauffage à faibles émissions présentent des changers, car elles mettent en jeu des gaz combustibles, des composants électriques, des pièces mobiles et des procédures qui nécessitent des mises à l’essai ou la dérivation temporaire des commandes de sécurité. Pour cette raison, l’appareil de chauffage doit être entretenu et réparé uniquement par un technicien professionnel qualifié

DANGERS D’UN ENTRETIEN INADÉQUAT

Les appareils de chauffage à faibles émissions comportent des caractéristiques techniques uniques. Une réparation ou un entretien inadéquat peut entraîner des blessures corporelles ou des dommages à la propriété. Pour cette raison, l’appareil de chauffage doit être entretenu et réparé uniquement par un technicien professionnel qualifié.