1
Part 1 – General Information
1.1
– Special Instructions to Owner
This manual supplies information for the installation, operation and servicing of the appliance. It is strongly recommended that this
manual be reviewed completely before proceeding with an installation.
NOTE: RETAIN THIS MANUAL FOR FUTURE REFERENCE
WARNING
It is important that all gas appliances are installed by a qualified installer/technician that is trained by CAMUS Hydronics. It is in
your own interest and that of safety to ensure that all local codes, and all the following “NOTES”, “CAUTIONS”, and “WARNINGS”
are complied with. Installing, servicing or adjusting this appliance should be performed only by a qualified installer/technician that
is trained by CAMUS Hydronics. The technician must utilize a combustion analyzer with CO
2
, CO, and draft gauge, to set the
appliance according to CAMUS
Hydronics’ recommendations, prior to commissioning.
WARNING
To minimize the possibility of serious personal injury, fire or damage to your appliance, never violate the following safety rules
WARNING
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE
can cause injury or property
damage. Refer to this manual. For additional information, consult a qualified installer, service agency or gas supplier.
WARNING
Should overheating occur or the gas supply fails to shut off, shut off the gas supply at a location external to the appliance.
DO NOT
Do not use this appliance if any part of it has been
under water
. The possible damage to a flooded appliance can be extensive
and present numerous safety hazards. Any appliance that has been
under water
must be replaced.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance. • Do not touch any electric switch: do not use any phone in your building. • Immediately call your
gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. • If you cannot reach your gas supplier, call the fire
department.
IMPORTANT
Consult and follow local Building and Fire Regulations and other Safety Codes that apply to this installation. Contact the local
gas utility company to authorize and inspect all gas and flue connections.
Installation and service must be performed by
CAMUS qualified factory trained service technicians.
Water heaters are heat producing appliances. To avoid damage or injury, do not store materials against the appliance or the vent-
air intake system. Use proper care to avoid unnecessary contact (especially children) with the appliance and vent-air intake
components.
Never cover your appliance, lean anything against it, store trash or debris near it, stand on it or in any way block the flow of fresh
air to your appliance.
UNDER NO CIRCUMSTANCES
may flammable materials such as gasoline or paint thinner be used or stored in the vicinity of this
appliance, vent-air intake system or any location from which fumes could reach the appliance or vent-air intake system.
A gas appliance that draws combustion air from the equipment room where it is installed must have an adequate supply of fresh
air circulating around it during burner operation for proper gas combustion and proper venting.
1.2
– Product Overview
The
VTech
is a condensing, direct fired, forced draft water heater with a fully passivated stainless steel storage tank. It is designed
for use with a fully pressurized domestic hot water system, at working pressures up to 160 PSI. The water heater will automatically
modulate to provide heat outputs between 100% and 20% of maximum design. Modulation rate is determined by the built-in digital
control according to current load demands.
The
VTech
utilizes a premix power burner based on a push-through design, which offers several venting options. Fuel input is
controlled by a one-to-one air/gas ratio gas valve. The operation of the blower generates a negative pressure that varies according
to the current rate of modulation and current combustion air density. The gas control valve will match this pressure on the gas side,
ensuring air and gas are metered in precise proportion (1:1 ratio). Steady state efficiency is maintained across the entire range of
modulation, because the combustion characteristics which determine efficiency remain the same. The gas valve also automatically
adjusts to changes in combustion air density caused by seasonal air temperature (or altitude) diff
erences, providing an “inherent O2
trim” correction to maintain the desired combustion settings.
