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INSTOMAX

TM

 Integrated instantaneous water heater installation, use and care manual 

(Revision Sept.  2013)

,  

Page 

9.

 

 

Section 4: OPERATION 

 

SAFETY PRECAUTIONS        

Be  sure  to  read  and  understand  the  entire  Manual  before  attempting  to  install  or  operate 
this  INSTOMAX™ 

 

unit.  Pay  particular  attention  to  the  following  “General  Safety 

Precautions”. Failure to follow these warnings could cause  property  damage,  bodily  injury 
or  death.  Should  you  have  any  problems  understanding  the  instructions  in  this  manual, 
STOP, and get help from a qualified installer or technician. 

 
4.1 GENERA INFORMATION 

To meet domestic  hot water needs, the aquastat 
(s) temperature controller on this water  is 
adjustable up to 88°C (190°F) and regulate the 
temperature of the liquid inside the tank . 
However, domestic hot water temperature is not 
controlled by these aquastat(s) but by the 
thermostatic mixing valve located in the upper 
section of the unit (see fig.1)  
Domestic hot water over 52°C (125°F) can cause 
severe burns instantly or death from scalds.  
50°C (120°F) is the recommended starting point 
for setting the control to supply general-purpose 
hot water. 
 
Safety and energy conservation are factors to be 
considered when setting the water temperature of 
the  tank  and  domestic  hot  water  temperature.. 
The  most  energy  efficient  operation  will  result 
when  the  temperature  setting  is  the  lowest  that 
satisfies all the requirements 
 
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  

Temperature 

Time to scalding 

50°C (120°F) 

Over 5 minutes 

52°C (125°F) 

1-1/2 to 2 minutes 

54°C (130°F) 

About 30 seconds 

57°C (135°F) 

About 10 seconds 

60°C (140°F) 

Less than 5 seconds 

63°C (145°F) 

Less than 3 seconds 

66°C (150°F) 

About 1-1/2 second 

68°C (155°F) 

About 1 second 

With kind permission from the Shriners Burn Institute 

 
The  thermostatic  controlled  mixing  valve  should 
be  adjusted  by  opening  a    domestic  hot  water 

tap,  measuring  the  water  temperature  with  a 
thermometer 

and 

by 

adjusting 

the 

thermostatically control mixing valve accordingly. 
 
 

 
 

 
There  is  a  hot  water  scald  potential  if  the 
thermostatically  controlled  mixing  valve  for 
reducing  point-of-use  water  temperature  is 
damaged,  not  properly  working  removed  or 
by-passed. 
 
 
 

 
 

Do  not  turn  ON  the  water  heater  unless  it  is 
filled  with  water.  Do  not  turn  ON  the  water 
heater  if  cold  water  supply  shut-off  valve  is 
closed. 
 

4.2 FILLING THE WATER HEATER TANK 

Make sure the tank drain valves is closed. Open 
the  cold  water  valve  supplying  the  water  heater. 
Bleed  the  air  from  the  water  heater  tank  by 
opening  the  pressure  relief  valve  located  on  top 
the  water  heater  tank  while  you  are  filling  the 
tank. 
 
One  the  reservoir  is  filled,  close  the  pressure 
relief  valve  and  allows  the  water  heater  tank 
internal  pressure  to  rise.  Tank  pressure  should 
stabilise  at  a  value  of  approximately  83  kPa 
(12psi). 
 

4.3  FILLING  THE  DOMESTIC  WATER 
HEATER HEAT EXCHAGER 

 
There  is  a  heat  exchanger  located  in  the  water 
heater  tank  that  separate  the  thermal  mass  fluid 
(water)  and  the  domestic  hot  water.  This  heat 

WARNING 

DANGER 

 

Summary of Contents for INSTOMAX 12

Page 1: ...nd maintenance of the boiler in order to insure your full satisfaction Installer and user MUST read carefully and understand these instructions Any questions regarding the operation maintenance service or warranty of this appliance 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 e...

Page 2: ...5 25 6 1x4 5 1x3kW 31 8 6 40 INSTOMAX 9 9 30 7 2x4 5kW 38 8 6 50 INSTOMAX 12 12 41 2x6kW 50 6 6 70 Can also be connected to a 208V 1ph source This would provide 75 of the nominal capacity at 240V Suggested Local code regulations and authority having jurisdiction may require different wiring and fuses Maximum operating pressure on the tank 207kPa 30psi Tank temperature range 10o C to 90o C 50o F to...

Page 3: ...ition of the National Plumbing Code and the National Electric Code In any case where instructions in this manual differ from local or national codes the local or national codes take precedence 2 3 CORROSIVE ATMOSPHERE The water heater should not be located near an air supply containing halogenated hydrocarbons or high humidity Such localisation would void any water heater warranty 2 4 SHIPMENT INS...

Page 4: ...ect to 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 150mm 6 inches of clearance from the floor to comply with NSF International recommendations The room temperature...

Page 5: ...ated instantaneous water heater installation use and care manual Revision Sept 2013 Page 5 Figure 1 Top view components identification and their location Figure 2 Front view components identification and their location ...

Page 6: ...the water heater right side HOT WATER OUTLET and COLD WATER INLET 3 4 NPT FEM fittings are use for connections Use only clean new pipe for domestic water connection Local codes regulations and authorities having jurisdiction may required specific pipe material to be used for connections Insulate all pipes containing hot water especially in unheated areas A thermometer should be installed to indica...

Page 7: ...lled mixing valve This valve allows reducing setting and regulating the domestic hot water temperature at a safe level In order to adjust the mixing valve to the desire temperature create a demand for domestic hot water measuring the domestic hot water temperature will indicate the adjustment required 3 6 ELECTRICAL 3 61 Main electrical power supply The water heater electrical wiring and grounding...

Page 8: ...INSTOMAXTM Integrated instantaneous water heater installation use and care manual Revision Sept 2013 Page 8 ...

Page 9: ...jury and may be used as a guide in determining the safest water temperature for your applications TIME TO SCALDING VS TEMPERATURE RELATIONSHIP Temperature Time to scalding 50 C 120 F Over 5 minutes 52 C 125 F 1 1 2 to 2 minutes 54 C 130 F About 30 seconds 57 C 135 F About 10 seconds 60 C 140 F Less than 5 seconds 63 C 145 F Less than 3 seconds 66 C 150 F About 1 1 2 second 68 C 155 F About 1 secon...

Page 10: ...heat exchanger as described in sections 4 2 and 4 3 2 Adjust temperature levels as described in section 4 4 3 Turn ON the water heater electric breaker 4 The water heater main contactor should close with an audible snap sound and all elements should turn on along with their indicator light 5 Tank temperature should gradually increase Time required for the INSTOMAX to reach the tank water temperatu...

Page 11: ...ker before attempting any work on the water heater Visual inspection of the water heater electrical cabinet Checks for leaks at the heating elements sign of overheating of electrical components and wiring Check for t proper operation of the unit temperature control Check the thermostatic mixing valve proper operation by measuring domestic water temperature at a domestic hot water tap with a thermo...

Page 12: ...anty 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 resulting from improper installation...

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