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 Electric Boilers 

MINI BTH

M

odels from 3 kW  to 12 kW  : 

2 08 / 2 40 V   s in g le   p h a s e    

 

INSTALLATION & OPERATING MANUAL 

 

 

 

Your MINI BTH Electric Boiler has been carefully assembled and factory tested to provide 
years of trouble-free service.  The following information and safety measures are provided to 
enable proper installation, operation, and maintenance of this product. 
  
It is imperative that all persons who are expected to install, operate or adjust this boiler 
should read these instructions carefully.   
 
Any questions regarding the operation, maintenance, service or warranty of this electric 
boiler should be directed to the supplier.   
 
When all installation steps have been completed, insert this installation manual in its original 
envelope, and keep in a safe place (close to the boiler) for future reference. 

 

THERMO 2000 INCORPORATED 

 

 

 

 

 

revision: June 2014 

Printed in Canada

Summary of Contents for MINI BTH 12

Page 1: ...nd maintenance of this product It is imperative that all persons who are expected to install operate or adjust this boiler should read these instructions carefully Any questions regarding the operation maintenance service or warranty of this electric boiler should be directed to the supplier When all installation steps have been completed insert this installation manual in its original envelope an...

Page 2: ...anc a ground Copper or Aluminum conductors can be used Add the amperage Max 5amp of the circulating pump if it is connected directly to the boiler On applications working at 208V 1ph multiply the capacity by 75 and the amperage by 87 A higher capacity cable could be required In all cases the local Electrical Code has priority Dimensions Connections Overall dimensions Inlet heating return 3 4 NPT F...

Page 3: ... case where instructions in this manual differ from local or national codes the local or national codes take precedence Boilers requiring to be built in conformity to ASME standards may be required in some provinces or state If such models are required model with an H suffix shall be used SECURITY CONSIDERATIONS Domestic and commercial installations have a maximum design operating pressure limited...

Page 4: ...amage to the adjacent area or to lower floors of the structure When such areas cannot be avoided a suitable drain pan or non flammable catch pan adequately drained and must be installed under the boiler The pan must be connected to a drain NOTE Auxiliary catch pan MUST conform to local codes The boiler can be mounted directly on a wall with adequate screws Make sure it is properly leveled All mode...

Page 5: ...d On heating systems with motorized zone valves this component is not required because the valve stops all water flow when closed Pressure relief valve This component supplied with the unit must be installed directly to the boiler housing to the appropriate connection according to the mounting position Connect the outlet of the relief valve downward to a safe location in case of discharge The pipi...

Page 6: ...est point of the unit it allows the unit to be drained for the eventual replacement of a defective component Strainer This component is used to collect potential sediments coming from the distribution system and more particularly from systems made of steel piping and radiators If such sediments accumulate at the bottom of the boiler it could be harmful to the heat transfer of the elements and gene...

Page 7: ...ating a heat demand only the corresponding pump be operated To do so you will need relays as illustrated below Boiler terminals CC 120 and C R W will not be used Zoning applications with motorized valves Connect the low voltage thermostat to the zone valve Components must be wired to ensure that only the zone valve corresponding to the zone calling for heat is actuated When a zone valve opens it g...

Page 8: ...BTH Electric Boilers USE CARE MANUAL Revision Jun 2014 Page 8 ...

Page 9: ...BTH Electric Boilers USE CARE MANUAL Revision Jun 2014 Page 9 ...

Page 10: ...ly required for different applications Applica tion Baseboard s Cast Iron radiators Warm floor in concrete Warm floorr between joists Temp F 180 F 155 o F 115 o F 140 o F Set the value of the second control Model of 9 to 12kW only at approximately 5F below the setting of the first control The indicating lamp s on front of the unit shall come ON as you increase the temperature of the control s On i...

Page 11: ...e outlet of this valve if a dripping condition occurs Twice a year Check for the proper operation of the automatic air purger s and eliminate air from the radiators Annually It is recommended that a visual inspection be made on the electrical compartments of the boiler to check the stanchness of the gasket on the element flange an also check for any overheating signs of the components and wires Re...

Page 12: ...W ZEL300 240V45KW 6kW ZEL300 240V6KW Temperature Pressure indicator ZMC300 75P160C Indicating lamp ZEL150 240VRED Contacteur ZEL100 2PC50120 Contactor Model 3 4 5 7 5 9kW ZEL100 2PC50120 Model 12kW ZEL100 4P50A120 Transformer ZEL400 120V50VA Pump Relay ZEL100 24ACSPST Fuse ZEL250 TDCC15A Temperature control ZEL200 G111781 High Limit control ZEL200 L6C732 Pressure Relief valve ZMC200 SV30PSI1 Refer...

Page 13: ...malfunctions resulting from installation repair maintenance and or usage that are not done in conformity with the manufacturer s installation manual or 2 Defects or malfunctions resulting from installation maintenance or repair that are not done in accordance with regulations in force or 3 Defects or malfunctions resulting from improper installation maintenance or repair done carelessly or resulti...

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