Thermo Products Models from 8 kW to 24 kW : 240 Volts ( single phase ) Maintenance

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Section 5 : Maintenance

Regular boiler maintenance will ensure trouble- free service for many years. It is recommended that you set up and follow a maintenance program. All components fail eventually. The use of incorrect replacement parts or disregarding safety procedures and warnings during repairs may reduce the boiler safety level and shorten its useful life.

The owner should set up the following maintenance program.

5.1 BOILER WATER PIPING :

Annual visual inspection.

Check for leaks close to connections, unions and valves. Repair as needed.

5.2 BOILER CIRCUIT SAFETY VALVE:

Monthly inspection.

To be checked manually to ensure safety and proper operation. Air trapped in the boiler is bled.

Make sure the water is discharged to a floor drain and that no bystander is splashed. Use the lever to open the safety valve. Hot water should come flowing out. Upon releasing the lever, the safety valve should shut tight. If it does not, it must be replaced by an identical or equivalent model. Never plug a safety valve.

5.3 DOMESTIC PIPING :

Annual visual inspection.

Check for leaks close to connections, unions and valves. Repair as needed.

5.4DOMESTIC CIRCUIT SAFETY VALVE (TEMPERATURE & PRESSURE):

Annual inspection.

To be checked manually to ensure safety and proper operation. Air trapped in the boiler is bled.

Make sure the water is discharged to a floor drain and that no bystander is splashed. Use the lever to open the safety valve. Hot water should come

flowing out. Upon releasing the lever, the safety valve should shut tight. If it does not, it must be replaced by an identical or equivalent model.

Never plug a safety valve.

5.5 SCALE BUILD-UP :

Monthly inspection.

This problem occurs infrequently under very specific conditions. The main symptom is a drop in domestic water pressure. A water softener will solve the problem.

A proper chemical cleaning is a more efficient solution. A scale dissolving product may be used, paying careful attention to the manufacturer’s recommendations. Do not use muriatic or hydrochloric acid-based products. Carefully flush the products after use. Contact your plumber to remove scale build-up from the coil.

!WARNING

The manufacturer’s warranty DOES NOT cover problems caused by improper installation or maintenance. If the safety valve opens periodically, it may be due to the expansion tank. Immediately call a qualified technician to appraise and repair the problem.

NOTE: To prevent tank breakage, trapped air must periodically be bled from it by opening the safety valve.

!DANGER

Before manually opening the safety valve, make sure no bystander will accidentally be splashed by the hot water. The discharged water should be directed to a floor drain to prevent scalding and damage.

THERMO 2OOO INC.

500, 9ième Avenue, C.P. 639, RICHMOND (QUÉBEC) JOB 2HO

TÉL.: (819) 826-5613 FAX: (819) 826-6370

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Contents Combomax Boiler specifications 240 Vac single phase Technical specificationsBoiler and connection dimensions Domestic hot water production capacity in US gallonsDIMENSION/ Dimensional Checklist Local Installation RegulationsIntroduction Corrosive AtmosphereInstallation Pressure relief valve Flow-check valveOperating pressure control expansion tank Makeup valveDomestic HOT Water Circuit Connecting the domestic hot water pipingExpansion tank on the cold water supply line Circulator Wiring Boiler WiringPrioritizing Terminal Post BI-ENERGY Setup Operation Adjusting the AquastatsFilling the Tank Filling the Heating CoilDomestic HOT Water Startup Startup ProcedureAdjusting the Mixing Valve Maintenance General Safety Precautions Combomax Schéma dinstallation général/ General installation Système primaire/secondaire TH1 TH2 EL1 EL2 TH1 EL1 TH2 EL2 24 Vac Bi-énergie avec Valve 3 Voies/ Dual Energy with 3-way valve Diagramme électrique/ Wiri ng diagram Thermo 2000 inc Panneau de contrôlel Control pannel Combomax TM Limited Warranty