Heat Transfer MODCON VWH 300 LP Installation & Maintenance page 6

PART 1: PRODUCT AND SAFETY INFORMATION
n
WARNING
Installer — Read all instructions in this manual,
and Mod Con Venting section, before installing.
Perform steps in the order given.
User — This manual is for use only by a
qualified heating installer/service technician.
Refer to User's Information Manual for your
reference.
User — Have this boiler serviced/inspected by
a qualified service technician annually.
Failure to comply with the above could result in
severe personal injury, death or substantial
property damage.
n
WARNING
Failure to adhere to the guidelines on this page
can result in severe personal injury, death or
substantial property damage.
n
WARNING
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 suppliers'
instructions.
• If you cannot reach your gas supplier, call the
fire department.
5
GAS-FIRED HOT WATER SUPPLY BOILER
(CONT'D)
CAUTION
You must not have a direct connection of the
potable water system into the Mod Con VWH heat
exchanger which could cause flow issues, short
cycling and increase mineral build-up in the unit.
The Mod Con VWH System is designed to have the
incoming potable water flow through the storage
tank first and then flow from the storage tank
through the Mod Con heat exchanger. Failure to
pipe the Mod Con VWH properly will void
warranty.
BEFORE INSTALLING
WHEN SERVICING BOILER
• To avoid electric shock, disconnect electrical
supply before performing maintenance.
• To avoid severe burns, allow boiler to cool
before performing maintenance.
BOILER OPERATION
• Do not block flow of combustion or
ventilation air to boiler.
• Should overheating occur or gas supply fail to
shut off, do not turn off or disconnect electrical
supply to circulator. Instead, shut off the gas
supply at a location external to the appliance.
• Do not use this boiler if any part has been
under water. Immediately call a qualified
service technician to inspect the boiler and to
replace any part of the control system and
any gas control that has been under water.
CAUTION
Consider piping and installation when
determining boiler location.
Boiler Manual