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Electric boilers MINI BTH 

Installation & Operating Manual (Revision: May 2015),                                                               

5

 

Section 3 : INSTALLATION 

 

 
The  manufacturer’s  warranty  does  not  cover  any  damage  or  defect  caused  by  installation,  or 
attachment,  or  use  of  any  special  attachment  other  than  those  authorized  by  the  manufacturer 
into,  onto,  or  in  conjunction  with  the  boiler.  The  use  of  such  unauthorized  devices  may  shorten 
the  life  of  the  boiler  and  be  dangerous.  The  manufacturer  disclaims  any  responsibility  for  such 
loss or injury resulting from the use of such unauthorized devices. 

 

3.1 SAFETY MEASURES 

All  installation  will  include  the  supplied  pressure 
relief  valve  which  limits  the  maximum  operating 
pressure to 30 psi (207 kPa). 
 
This electric boiler is designed to be installed on 
a circuit operated between 50°F to 190F (10C to 
90C)  and  at  a  maximum  operating  pressure  of 
30psi  (207kPa).  The  unit  in  designed  solely  to 
be  used  on  a  close  loop  hydronic  heating 
system.  The  heat  transfer  solution  must  be  a 
solution  of  water  or  a  mix  solution  Water/Glycol 
having a maximum glycol concentration of 50%. 
The boiler high limit temperature control is set at 
a fixed temperature of 210F 99C). If the heating 
distribution  system  on  which  the  boiler  is 
installed requires a high limit controller having a 
lower setting, this controller will be added to the 
system and connected  in series  with the factory 
installed 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 
openings. Make sure it is properly leveled. 
The  electric  boiler  must  be  located  or  protected 
so  as  not  to  be  subject  to  physical  damage,  for 
example, by moving vehicles, area flooding, etc. 
All  models  can  be  installed  directly  on  a 
combustible  wall  and  into  an  alcove.  The 
location  must  have  sufficient  ventilation  to 
maintain  an ambient temperature  not  exceeding 
90F (32C). 

 

 
The  electric  boiler  should  not  be  located  in 
an  area  where  leakage  of  its  tank  or  water 
connections  will  result  in  damage  to  the 
adjacent  area  or  to  lower  floors  of  the 
structure.    When  such  areas  cannot  be 
avoided,  install  a  suitable  drain  pan  or  non-
flammable catch pan under the unit to collect 
the  water.  The  pan  must  be  connected  to  a 
drain. 
NOTE: Auxiliary catch pan MUST conform to 
local codes. 

 
3.3 CLEARANCE   

For adequate inspection and servicing the 
following minimum clearance is necessary: 
 

Table 3: boiler clearances 

Sides 

3 inches 

 Electric elements side  

14 inches 

Front side of the boiler 

3 inches* 

Back  

0 inch 

 
*If  the  boiler  is  installed  in  a  closed 
compartment,  allow  an  access  service  opening 
and adequate ventilation to maintain an ambient 
temperature lower than 90F/32C. 

 

WARNING 

   ! 

 

CAUTION 

  ! 

Содержание MINI BTH

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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