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Finned copper tube gas boilers & water heaters – Boiler Manual
12
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e) Test for spillage at the draft hood relief opening aft er 5
minutes of main burner operation. Use the fl ame of a match
or candle, or smoke from a cigarett e, cigar or pipe.
Faire fonctionner le brûleur principal pendant 5 min ensuite,
déterminer si le coupe-tirage déborde à l’ouverture de décharge.
Utiliser la fl amme d’une allunett e ou d’une chandelle ou la fumée
d’une cigarett e, d’un cigare ou d’une pipe.
f) Aft er it has been determined that each appliance remaining
connected to the common venting system properly vents when
tested as outlined above, return doors, windows, exhaust fans,
fi replace dampers and any other gas-burning appliance to their
previous condition of use.
Une fois qu’il a été d éterminé, selon la métode indiquée ci-
dessus, que chaque appareil raccordé au système d’évacuation
est mis à l’air libre de façor adéquate. Remett re les portes et les
fenêtres, les ventilateurs, les registres de cheminées et les
appareils au gaz à leur position originale.
g) Any improper operation of the common venting system should
be corrected so the installation conforms with the National Fuel
Gas Code, ANSI Z223.1/NFPA 54. When resizing any portion
of the common venting system, the common venting system
should be resized to approach the minimum size as determined
using the appropriate tables in Appendix F in the National Fuel
Gas Code, ANSI Z223.1/ NFPA 54 and or CAN/CGA B149
Installation Codes.
Tout mauvais fonctionnement du systéme d’évacu-tion commun
devrait étré corrigé de façor que l’installation soit conforme au
National Fue Gas Code, ANSI Z223.1/NFPA 54 et (ou) aux
codes d’installation CAN/CGA-B149. Si la grosseur d’une
section du système d’ évacuation doit étré modifi ée, le système
devrait étré modifi é pour respecter les valeurs minimales des
tableaux pertinents de l’appendice F du National Fuel Gas Code,
ANSI Z223.1/ NFPA 54 et (ou) des codes d’installation CAN/
CGA-B149.
GENERAL PIPING REQUIREMENTS
Improper piping of this boiler/water heater will void
the manufacturer’s warranty and can cause boiler
failure resulting in fl ooding and extensive property
damage! Excessive water hardness causing scaling in
the copper heat exchanger tubes is NOT covered
under the manufacturer’s warranty, see Table 8.
Excessive pitt ing and erosion of the internal surface
of the copper heat exchanger tubes is NOT covered
under the manufacturer’s warranty if the result of high
water fl ow rates, see Table 7. Return water
temperatures below
125°F,
52°C
will result in heat
exchanger damage from excessive condensation
voiding the manufacturer’s warranty, see Primary/
Secondary Piping, Figure 9.
Shut off valves and unions should be installed at the
inlet and outlet connections of the boiler/hot water
heater to provide for isolation of the unit should
servicing be necessary.
Freeze Protection
Installations in areas where the danger of freezing exists are not
recommended unless proper freeze protection is provided. Th e
following precautions MUST be observed:
1. A continuous fl ow of water through the unit MUST be main-
tained! Th e pump responsible for fl ow through the boiler/water
heater must run continuously!
2. An ethylene glycol/water mixture suitable for the minimum
temperature that the unit will be exposed to must be used. Th e
pump must be capable of producing a minimum of 15% more
fl ow and overcoming a 20% increase in head loss. Domestic
water systems must be isolated from the water heater by the
use of a heat exchanger or other approved method.
3. If the unit must be shut off for any reason the electric, gas and
water supplies MUST be shut off and the unit and its pump
completely drained.
Improper outdoor installation of this unit can cause
boiler failure voiding the manufacturer’s warranty!
Valve
Pipe the discharge of the pressure relief valve as shown in Figure 8.
Never install any type of valve between the boiler/
water heater and the relief valve or an explosion causing
extensive property damage, severe personal injury or
death may occur!
Flow Switch
Th e fl ow switch supplied with the boiler/water heater must be wired
to the terminal strip in the control panel to prevent the boiler from
fi ring unless there’s adequate water fl ow through the unit. Th e fl ow
switch must be installed in the supply piping adjacent to the boiler
outlet connection.
Failure to properly install the fl ow switch may result
in damage to the boiler/water heater heat exchanger
voiding the warranty!
