Install Instructions

Mascot ST Tankless Water Heater
Page 7
DANGER
Vapors from ammable liquids will explode and
catch on re. These will cause death or severe
burns.
Do not use or store ammable products such as
gasoline, solvents or adhesives in the same room
or area near the appliance.
Keep ammable products
Far away from water heater
In approved containers
Tightly closed
Out of children’s reach
Vapors
Cannot be seen
are heavier than air
spread on the oor
Can spread from other rooms to the main burner
by air currents
Do not install the appliance where ammable
products will be stored.
Read and follow water heater warnings and
instructions thoroughly. If owner’s manual is
missing, contact the retailer or manufacturer.
The Laars Water Heater must be installed by a
qualied plumber, a licensed gas tter, and/or a
professional service technician.
Improper installation and/or operation will cause a
potentially hazardous situation, such as serious injury
or death. Also, it will void the warranty.
• The National Fuel Gas Code NFPA 54 / ANSI Z224.1
• National Electric Code ANSI/NEPA 70
• All applicable local, state, national and provincial
codes, regulations and laws.
Proper care is your responsibility. Carefully read and
understand the Operating Information in this manual
before operating the Laars Water Heater.
Be aware of the location of the gas shut-off valve
and operation method. Close the gas shut-off valve
immediately if the appliance is subjected to re,
overheating, ood, physical damage, or any other
damaging condition that might affect the operation of
the unit. Water Heater must be checked by a qualied
technician before resuming operation.
DO NOT use this Water Heater if any part has been
under water. Immediately call a qualied technician
for inspecting the Water Heater and replacing any
part of the control system and gas control which have
been under water.
Do not power up the unit until the gas and water
supply valves are fully opened. Make sure that the
fresh air intake port and exhaust gas port are opened
and functional.
DO NOT attempt to install, repair, or service this
Water Heater by yourself.
Do not change any part of the Water heater.
Contact a qualied technician if the Water Heater
needs repair or maintenance.
Ask your gas supplier for a list of qualied service
providers.
DO NOT use spray paint, hair spray, or any other
ammable spray near Water Heater or near the
exterior fresh air inlet port. DO NOT place any items
in or around the exterior exhaust gas outlet port and/
or fresh air inlet port. These could restrict or block the
ow in or out of the vent system.
“Caution: While repairing control, all wires are
labeled. You must connect the wires in accordance
with the instruction.
Wiring errors can cause improper and dangerous
operation.
“Verify proper operation after servicing operation”
This consists of the gas ignition system components
which are protected from water (dripping, spraying, rain,
etc.) during operation and service (circulator replacement,
condensate trap, control replacement, etc.).
After installing the heater, safety device must be
tested.
This water heater is equipped with a blocked vent
shutoff system.
If the error code ‘41’ occurs, follow the instructions
below.
- First, turn off the manual gas valve.
- Make sure that there is no foreign object in the vent
passage or rodent screen.
- If you do not nd any problem, do the following.
- Turn off the error state by pressing the power button
of control panel.
- If the error occurs repeatedly, call your service
technician or gas supplier.