25
needed, perform the steps below:
- Put the boiler in OFF mode.
- Make sure the cold water inlet tap is open.
- Open the filling tap (B).
- Check the pressure value on the screen: when the pressure
indicated by the sensor is between 15-21 psi (1-1.5 bar) close
the filling tap.
7.18
Draining the heating circuit of the boiler
Before draining the system, switch off the electrical supply by
turning off the main switch of the system.
− close the heating system’s valves
− manually loosen the system drain valve (C).
C
7.19
Emptying the domestic hot water system
Whenever there is risk of freezing, the domestic hot water system
must be emptied in the following way:
− turn off the main water supply tap
− turn on all the hot and cold water taps
− drain from the lowest points.
9
DANGER
: The system water temperature could be very hot,
be sure when opening the drain valve that the rubber pipe
is well attached. Water could spray from the front of the unit
and cause instant severe burns or death from scalds.
8 GENERAL VENTING
Install the boiler/venting system in accordance with the vent
manufacturer’s instructions and with the National Fuel Gas
Code, ANSIZ223.1/NFPA 54, CAN/CSA B149.1, and/or applicable
provisions of local building codes.
This boiler is a direct vent appliance according to ANSI Z21.13/
CSA4.9 standard.
Vent installations shall be in accordance with Part 7, Venting
of Equipment, of the National Fuel Gas Code, ANSI Z223.1/NFPA
54 and/or CAN/CSA B149.1, Natural Gas and Propane Installation
Code, or applicable provisions of the local building codes.
9
DANGER
: Ensure the exhaust and intake vent piping comply
with these instructions regarding the vent system. Inspect
finished combustion air intake and exhaust piping thoroughly
to ensure all joints are secured well, airtight and comply with all
applicable code requirements, as well as with the instructions
provided in this manual and the vent manufacturer’s
installation manual. Failure to provide a properly installed
vent system will cause severe personal injury or death.
9
DANGER
: Carbon Monoxide is invisible, odorless, and toxic!
Install a carbon monoxide alarm in your home, even if you
do not own a gas appliance. Locate the carbon monoxide
alarm in the living area of your home and away from gas
appliances and doorways to attached garages. Follow the
alarm manufacturer’s instruction included with the alarm.
NOTICE
: pipe supports shall be placed per local code and the
vent manufacturer’s instructions.
9
WARNING
: RISK OF CARBON MONOXIDE POISONING OR FIRE
DUE TO JOINT SEPARATION OR PIPE BREAKAGE. Ensure all of
the venting system is properly supported and secured per
these instructions, venting manufacturer’s instructions and
with the National Fuel Gas Code, ANSIZ223.1/NFPA 54, CAN/CSA
B149.1, and/or applicable provisions of local building codes.
Failure to do so may result in substantial property damage,
severe personal injury or death.
9
WARNING
: This vent system will operate with a positive
pressure in the pipe. Do not connect vent connectors serving
appliances vented by natural draft into any portion of
mechanical draft systems operating under positive pressure.
Follow the venting instructions carefully. Failure to do so
may result in severe personal injury, death, or substantial
property damage.
9
The safe operation of a system is based on the use of parts
supplied by the vent manufacturer and the performance
of the system may be affected if the combination of these
parts is not used in actual building construction.
Acceptance of the system is dependent upon full compliance
with the vent manufacturer’s installation instructions, National
Fuel Gas Code, ANSIZ223.1/NFPA 54, CAN/CSA B149.1, and/or
applicable provisions of local building codes.
8.1
Combustion Air-inlet Contamination
Be careful not to locate the air-inlet termination in an
area where contaminants can be drawn in and used for
combustion. Combustion air containing dust, debris or air-
borne contaminants will drastically increase the required
maintenance and may cause a corrosive reaction in the
Heat Exchanger which could result in premature failure, fire,
serious injury, or death. See table below for a list of areas to
avoid when terminating air-inlet piping:
Products to Avoid
Contaminated Sources
to Avoid
Antistatic fabric softeners,
bleaches, detergents, cleaners Laundry facilities
Perchloroethylene (PCE),
hydrocarbon based cleaners
Dry cleaning facilities
Chemical fertilizer, herbicides/
pesticides, dust, methane gas
Farms or areas with livestock
and manure
Paint or varnish removers,
cements or glues, sawdust
Wood working or furniture
refinishing shops
Water chlorination chemicals
(chloride, fluoride)
Swimming pools, hot tubs
Solvents, cutting oils, fiberglass,
cleaning solvents
Auto body or metal working
shops
Refrigerant charge with CFC or
HCFC
Refrigerant repair shops
Permanent wave solutions
Beauty shops
Fixer, hydrochloric acid
(muriatic acid), bromide, iodine
Photo labs, chemical / plastics
processing plants
Cement powder, crack fill dust,
cellulose, fiber based insulation
Concrete plant or construction
site
9
WARNING
: Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other boiler. Failure to follow
instructions may result in serious injury or death.
8.2
Flammable Solvents and Plastic Piping
Due to the extremely flammable characteristics of most
glues, cements, solvents and primers used in the process
of joining plastic vent and air-inlet pipes, explosive
solvent vapors must be evacuated from the vent and air-
inlet prior to start-up. Avoid using excess cement or primer
that may lead to pooling inside the pipe assembly. Freshly
assembled piping assembly should be allowed to cure
for a minimum of 8 hours before applying power to the
gas fired boiler. Refer to Mandatory Pre-commissioning
Procedure for Plastic Venting in this section.
9
DANGER
: Flammable Cements and Primers – It is the
installers’ responsibility to familiarize themselves with the
hazards associated with explosive solvents and to take all
precautions to reduce these risks. Failure to follow these
instructions can cause explosions, property damage, injury
or death.
9
WARNING
: Only solvents, cements and primers approved
by the vent manufacturer shall be used with their vent
system. Failure to do so may result in severe personal injury,
substantial property damage or death.
Summary of Contents for Family PRO 42 IS
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