THERMO 2000 MINI BTH Installation & Operating Manual Download

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Electric Boilers

MINI BTH

Models from 3 kW to 12 kW :

2 0 8 / 2 4 0 V s in g l e 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, keep this installation manual in a safe
place (close to the boiler) for future reference.

THERMO 2000 Inc.

Revision: May 2015

Printed In Canada

Summary of Contents for MINI BTH

Page 1: ...nstallation 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 keep this installation manual in a s...

Page 2: ...8 3 4 7 Drain valve 8 3 4 8 Strainer 8 3 5 ELECTRICAL CONNECTIONS 8 3 5 1 Main boiler supply 8 3 5 2 Electrical supply of External accessories 9 3 5 Thermostat s and pump s connections 9 Section 4 START UP OPERATION 12 4 1 PREPARATORY STEP 12 4 2 TEMPERATURE CONTROL ADJUSTMENT 12 4 3 INSPECTION AFTER STARTUP 12 Section 5 MAINTENANCE 13 5 1 INTRODUCTION 13 5 1 1 At all time 13 5 1 3 Annually 13 5 2...

Page 3: ...h two conductors 240V or 208V 1ph L1 L2 with a ground if the application does not require a 120V electrical supply for external accessories such as a pump etc 2 Add the amperage of the circulating pump and other external accessories if they are connected to the boiler max 15A 3 A higher cable size could be required In all cases the local electrical code has priority The electrician has the respons...

Page 4: ... installed in accordance with these instructions and in conformity with local codes or in the absence of local codes with the National Plumbing Code and the National Electric Code current edition In any case where instructions in this manual differ from local or national codes the local or national codes take precedence 2 2 CORROSIVE ENVIRONMENT The electric boiler must not be installed near an ai...

Page 5: ...led limit control 3 2 LOCATION The electric boiler should be installed in a clean dry location Long hot water lines should be insulated to conserve water and energy The electric boiler and water lines should be protected from exposure to freezing temperature The boiler can be mounted vertically or horizontally directly on a solid surface with 4 adequate screws inserted in the provided boiler openi...

Page 6: ...slightly higher than the one of element 2 3 4 BOILER WATER CONNECTIONS Make sure you connect the accessories and the piping to the proper connection fittings as indicated at figure 2 above and according the selected mounting position Figure 3 below shows typical connections of a MINI BTH 2 0 boiler to a radiant floor heating system The location of the distribution system components may be differen...

Page 7: ... the outlet of the relief valve downward to a safe location in case of discharge The piping diameter used for the discharge piping shall not be smaller than that of the valve outlet No valve of any type restriction or reducer coupling should be installed on the discharge line Local codes shall govern the installation of relief valves 3 4 3 Expansion tank The expansion tank must be able to store th...

Page 8: ... state or local code requirements The latter having precedence The electrical supply can be done in two different ways depending on the necessity of supplying or not external accessories such as a pump at 120Vac If the boiler electrical supply is on 208V the position of wire terminal on the transformer connected to 240V will have to be changed to 208V Alternative 1 A 120VAC electrical supply is re...

Page 9: ...ng boiler terminals Two wire thermostat Terminals R and W Three wire thermostat Terminals C R and W Using 14 gauge wires to connect the circulating pump directly on terminals P1 P2 120vac Multiple pumps zoning applications Components shall be connected in such a way that when a thermostat is generating a heat demand only the corresponding pump will operate To do so you will need relays as illustra...

Page 10: ...used to supply 24Vac to the zone valves if the corresponding load does not exceed 30VA otherwise an external transformer will be required Voltage at the outlet of the transformer shall never be under 24Vac Diagramme électrique Wiring diagram Raccordement de zone valves Wiring for zoned valves system 1 2 1 2 1 2 Thermostat Zone 1 120 V 24 Vac Zone valve Thermostat Zone 2 Thermostat Zone 3 Zone valv...

Page 11: ...ne yellow Bleu Bleu G N R Noir blk Blanc wht P1 P2 Pompe pump 15A Sur modèles 7 5 à 9kW On 7 5 to 9kW models L1 ZDV200 DIAMINI1 Figure 7 Wiring diagram 3 9 KW L1 G C1 1 TH1 TH2 Diagramme électrique Wiring diagram MINI BTH 240V 12kW MINI BTH 208V 9kW Légende Legend TH C R HL AR Aquastat Élément chauffant Heating element Contacteur de puissance Power relay Relais Relay Lampe témoin Pilot light Haute...

Page 12: ...equired for different applications Application Baseboards Cast Iron radiators Warm floor in concrete Warm floorr between joists Temp F 180 F 155 F 110 F 130 F Set the value of the second control Model of 7 5 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 setting of the control s On ini...

Page 13: ...f this safety relief valve if a dripping condition occurs 5 1 2 Twice a year Check for the proper operation of the automatic air purger s and eliminate air from the radiators using their manual air purger 5 1 3 Annually It is recommended that a visual inspection be made on the electrical compartments of the boiler to check the seal of the gasket on the element flange and also check for signs of ov...

Page 14: ...inal Heating elements 3kW ZEL300 240V3KW 4 5kW ZEL300 240V45KW 6kW ZEL300 240V6KW Fuse ZEL250 TDMIDJ15 High limit automatic reset ZEL200 L6C732 Temperature control ZEL200 G111781 Pressure Relief valve ZMC200 SV30PSI1 Indicating lamp ZEL150 240VRED Contactor bobine 24Vac Modèle 3 4 5 7 5 9kW ZEL100 2PC5024 Modèle 12kW ZEL100 4P50A24 Pump Relay ZEL100 24ACSPST Transformer 208 240Vx24Vac ZEL400 20842...

Page 15: ...sure is not installed or if it is not functioning properly or when it is not connected to a drain to avoid damage to the property E Installation in which liquid circulating in the tank does not remain in closed circuit or installation in which piping is leaking or on systems with polybutylene pipes or other having no oxygen absorption barrier F Installation where the acidity of water is not within...

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