19
- Install the gas valve main supply.
- Install the exhaust flue and intake air piping.
- Carry out the electrical connection according to local code rules.
7 .3
ASME pressure relief valve
The boiler has a pressure relief valve supplied with the boiler.
Connect the valve hydraulically on the heating supply connection
and in vertical position (see reference picture).
This device is designed for emergency safety relief and shall not be
used as an operating control.
9
WARNING:
To avoid water damage or scalding due to relief
valve operation:
− The discharge line must be connected to relief valve outlet and
run to a safe place of disposal. Terminate the discharge line in a
manner that will prevent possibility of severe burns or property
damage.
− The discharge line must be as short as possible and be the
same size as the valve discharge connection throughout its
entire length.
− The discharge line must pitch downward from the valve and
terminate at least 6’’ (152 mm) above the floor drain where any
discharge will be clearly visible.
− The discharge line shall terminate through plain (unthreaded)
pipe. The discharge line material must conform to local plumbing
code or A.S.M.E. requirements.
− No shutoff valve shall be installed between the relief valve and
the boiler, or in the discharge line.
− Do not pipe the discharge to any place where freezing could
occur.
− Do not plug or place any obstruction in the discharge line.
− Test the operation of the valve after filling and pressurizing
system by lifting the lever. Make sure the valve discharges
freely. If the valve fails to operate correctly, replace it with a new
relief valve.
− For boilers installed with only a pressure relief valve, the indirect
storage tank (if used) must have a temperature and pressure
relief valve installed. This relief valve shall comply with the
standard for Relief Valves for Hot Water Supply Systems, ANSI
Z21.22/CSA4.4.
− Failure to comply with the above guidelines could result in the
failure of the relief valve to operate, resulting in the possibility of
severe personal injury, death or substantial property damage.
− For safe operation of the appliance, the relief valve must not be
removed or plugged.
Maintenance of the relief valve
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CAUTION:
The valve lever must be operated at least once
a year by qualified personnel during annual maintenance to
insure that water-ways are clear.
Certain natural occurring mineral deposits may adhere to the valve,
rendering it inoperative. When manually operating the lever, water
will discharge and precautions must be taken to avoid contact
with hot water and to avoid water damage. Before operating the
lever, check to see that a discharge line is connected to this valve
directing the flow of hot water from the valve to a proper place of
disposal, otherwise personal injury may result. If no water flows,
the valve is inoperative.
Call a qualified plumber immediately.
Pressure relief valve should be inspected at least once every three
years by a licensed plumbing contractor or authorized inspection
agency, to insure that the product has not been affected by corrosive
water conditions and to insure that the valve and discharge line
have not been altered or tampered with illegally. Certain naturally
occurring conditions may corrode the valve or its components
over time, rendering the valve inoperative. Such conditions are
not detectable unless the valve and its components are physically
removed and inspected. Do not attempt to conduct this inspection
on your own. Contact your plumbing contractor for a reinspection
to assure continuing safety.
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WARNING:
Failure to reinspect this valve as directed could
result in unsafe pressure buildup which can result in serious
injury or death and/or severe property damage.
7 .4
Installing the condensate check valve
I
t is mandatory, before starting the boiler, even just temporarily, to
install the condensate check valve supplied as standard.
For the installation proceed as follows:
- remove the plug (T) from the condensate trap
- carefully secure the condensate check valve, screwing it on tight
and checking its seal
- connect a pipe for draining the condensate to a suitable collection
and evacuation system in the white water outlet and in compliance
with current legislation.
9
T
condensate
check valve
condensate pipe
WARNING:
The manufacturer is NOT responsible for any
damage caused by the installation of the boiler without the
condensate check valve being correctly positioned. An
improperly installed or damaged condensate check valve may
result in substantial property damage, severe personal injury
or death.
Install the flexible condensate drain pipe (Ø 7/8” - 21 mm flexible
rubber female connection) with a suitable gradient to avoid
condensate stagnation.
Discharge condensate from the boiler into the drainage system,
either directly or (if required) via a neutralizer kit (not supplied).
The condensate drain of the boiler is equipped with a built-in
condensate trap in order to keep flue gases from being discharged
via the condensate drain.
The condensate formed both in the condensing boiler and in the
flue gas pipe must be discharged into the public sewage system in
accordance with all applicable local regulations.
The condensate produced by a gas-fired heating system has a pH
value between 3 and 4.
Some local codes may require the use of a separate neutralizer kit
to treat the condensate.
With a neutralizer kit installed, all condensate from the boiler and
the flue gas pipe enters into the neutralizer kit where it is treated
and released into the public sewage system with a safe pH value
of above 6.5.
The use of neutralization granulate (performing the neutralizing
process) is dependent on the operation of the heating system.
To determine the required refill amount, check granulate level
several times during the first year of operation. In some cases one
granulate fill may last an entire year.
The condensate discharge outlet to the drainage system connection
must be clearly visible. It must be installed with a suitable gradient
and provided with a stench trap.
If the condensate outlet of the boiler is lower than the drain, a
condensate pump must be used.
Only corrosion-resistant materials may be used for condensate
drainage purposes. Do not use galvanized materials or materials
containing copper for piping, couplings etc.
Please note that other requirements may apply depending on local
regulations and/or project-specific details.
It is advisable to contact your local waterworks office (authority
responsible for waste water regulations) well before commencing
with the installation of
the neutralizer kit in order to establish details
of local regulations that apply.
NOTICE:
Pipe ventilation must take place between the condensate
trap and the neutralizer kit (if applicable).
