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MC 

COMBOMAX  

RÉSIDENTIAL 

23 

TO

 64

 

Electric boiler  with integrated instantaneous water heater 

 

Capacity from 8 kW  to 24  kW  :                                

 

24 0  V o l t s   (   s i n g le   p h a s e   )    

 

Use and Care Manual 

With installation instructions for the contractor 

 

 

 

Your COMBOMAX

®

 electric boiler has been carefully assembled and factory tested to 

provide years of trouble-free service. This manual contains instructions for the safe and 
proper installation, operation and maintenance of the boiler, in order to ensure your full 
satisfaction 
  
It is imperative that all persons who are expected to install, operate or adjust this boiler read 
the instructions carefully.  
 
Any questions regarding the operation, maintenance, service or warranty of this water 
heater should be directed to the dealer or distributor you purchased it from. When all 
installation steps have been completed, replace this installation manual in its original 
envelope, and keep in a safe place near the heater for future reference. 

 

THERMO 2000 INC.   

 

 

 

 

 

revised : Oct. 2015 

Printed in Canada 

Summary of Contents for COMBOMAX 23-10

Page 1: ...lation operation and maintenance of the boiler in order to ensure your full satisfaction It is imperative that all persons who are expected to install operate or adjust this boiler read the instructions carefully Any questions regarding the operation maintenance service or warranty of this water heater should be directed to the dealer or distributor you purchased it from When all installation step...

Page 2: ... 76 Gal US 3 4 Sweat F 1 NPT F 67 24 425 lbs Table 3 Domestic hot water production capacity in US gallons 1st hour Continuous Model 110F 140F 180F 110F 140F 180F COMBOMAX 23 8 75 44 28 47 33 24 COMBOMAX 23 10 87 52 33 59 41 29 COMBOMAX 23 15 116 73 48 88 62 44 COMBOMAX 23 18 134 85 57 106 74 53 COMBOMAX 23 20 145 93 63 117 82 59 COMBOMAX 23 24 169 110 75 141 99 71 1st hour Continuous Model 110F 14...

Page 3: ...COMBOMAXMC Electric boiler Set up use and care guide revised Oct 2015 Page 3 Figure 1 Component diagram ...

Page 4: ...ctric Code In any case where instructions in this manual differ from local or national codes the local or national codes take precedence 2 2 CORROSIVE ATMOSPHERE The heater should not be located near an air supply containing halogenated hydrocarbons or high humidity The limited warranty is voided when failure of the water heater is due to a corrosive atmosphere 2 3 SHIPMENT INSPECTION Inspect the ...

Page 5: ...physical damage for example by moving vehicles area flooding etc All models can be installed on combustible floors and in alcoves If the water heater is to be installed in a restaurant or other location where the floor is frequently cleaned it must be elevated to provide at least 6 inches of clearance from the floor to comply with NSF International recommendations The room temperature must not exc...

Page 6: ...heating system related to the variation of its water temperature during the heating season Consequently the selection of the appropriate expansion tank model must be made taking into account both the maximum operating temperature of the system and its water content Note that the water content of an heating system with cast iron radiators is a lot more than a system with hot water baseboard The imp...

Page 7: ... 8 4 6 3 4 COMBOMAX XX 24 24 16 4 8 2 5 5 4 1 3 5 9 2 Selecting a circulator Consult the manufacturer s operating characteristic curves to select the proper model These curves plot flow versus pressure together with other information such as efficiency and power Ask your pump dealer or HVAC wholesaler to recommend the circulator which best fits your needs 3 6 DOMESTIC HOT WATER CIRCUIT 3 6 1 Conne...

Page 8: ...arge at most 6 above the floor far from any live electrical parts The discharge line must pitch downward from the valve to allow complete draining and be no smaller than the outlet of the valve The end of the discharge line should not be threaded or concealed and should be protected from freezing No valve of any type restriction or reducer coupling should be installed in the discharge line Local c...

Page 9: ... COMBOMAX MC boiler can be combined with an existing oil or gas fired furnace Please contact your utility to make sure your building is eligible and to find out about the new wiring configuration Please refer to figures 7 and 8 for the set up required The CBE EM bi energy switching control available as an option is especially designed to satisfy utility requirements The CBE EM control selects the ...

Page 10: ...tap as soon as water flows out of it Fix any leaks Open all other hot water taps fed by this heating coil to bleed the air trapped behind them 4 3 ADJUSTING THE AQUASTATS Once all air has been bled from the system and all components valves bleeders controls have been properly adjusted the boiler can be put into operation Never operate the boiler before these adjustments are complete Bear in mind s...

Page 11: ...ximum boiler water temperature is 190 F This should be 20 F to 40 F above the desired temperature for domestic hot water In practice the boiler water temperature should be between 160 F and 180 F An excessively high setting can cause scalding Use the thermostatically controlled mixing valve included with the unit to lower the domestic hot water temperature and thus the risk of injury When there is...

Page 12: ... 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 Neve...

Page 13: ...he energy source has shut off To find hot water temperature being delivered turn on a hot water faucet and place a thermometer in the hot water stream The following chart details the relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the safest water temperature for your applications TIME TO SCALDING VS TEMPERATURE RELATIONSHIP Temperat...

Page 14: ...COMBOMAXMC Electric boiler Set up use and care guide revised Oct 2015 Page 14 Figure 2 General diagram single zone ...

Page 15: ...COMBOMAXMC Electric boiler Set up use and care guide revised Oct 2015 Page 15 Figure 3 General diagram radiant floor application ...

Page 16: ...COMBOMAXMC Electric boiler Set up use and care guide revised Oct 2015 Page 16 Fig 4 General diagram used on large heating water systems ...

Page 17: ...COMBOMAXMC Electric boiler Set up use and care guide revised Oct 2015 Page 17 Figure 5 General diagram used on multi zones systems ...

Page 18: ...COMBOMAXMC Electric boiler Set up use and care guide revised Oct 2015 Page 18 Figure 6 General diagram Dual Energy system without trhee way valve ...

Page 19: ...COMBOMAXMC Electric boiler Set up use and care guide revised Oct 2015 Page 19 Figure 7 General diagram Dual Energy with three way valve ...

Page 20: ...COMBOMAXMC Electric boiler Set up use and care guide revised Oct 2015 Page 20 ...

Page 21: ...COMBOMAXMC Electric boiler Set up use and care guide revised Oct 2015 Page 21 ...

Page 22: ...ar l installateur Wiring by others H H V1 V2 V3 E1 E2 Valve 3 voies optionnelle Optional 3 way valve Sonde extérieure Outdoor sensor Lumière haut tarif High tarif light Transfo 120 Vac 24 Vac Interrupteur DPDT Switch ON OFF ON Bi energie Dual energy Electrique Electric Mazout Oil DPST Relais Relay Chaudière mazout Oil boiler T T relais de combustion oil boiler burner DPST Relais Relay T6 T5 Relais...

Page 23: ...COMBOMAXMC Electric boiler Set up use and care guide revised Oct 2015 Page 23 Figure 8 Wiring diagram single and multiple zones ...

Page 24: ...COMBOMAXMC Electric boiler Set up use and care guide revised Oct 2015 Page 24 Figure 10 Parts list 240V models ...

Page 25: ...the unit Exclusions This warranty is void and shall not apply if A Defects or malfunctions resulting from installation repair maintenance and or usage that are not done in conformity with the manufacturer s installation manual or B Defects or malfunctions resulting from installation maintenance or repair that are not done in accordance with regulations in force or C Defects or malfunctions resulti...

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