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
!
!
