Page 14
Legacy
™
Model LRZM Pool/Spa Heater Installation and Operation Manual
heater draft hood. The draft hood and heater top must
be easily removable for normal heater service and
inspection.
The draft hood outlet is to be connected to an
unobstructed vent pipe of the same diameter, termi-
nating outside the building. The vent must terminate
at least two (2) feet (0.61 m) above the highest point
of the roof or other object that is within 10 feet (3.05
m) of the vent termination. The vent pipe must have a
listed vent cap which allows a full equivalent opening
for
fl
ue products (see Figure 5). The top of the vent
cap must be at least
fi
ve feet in vertical height above
the draft hood outlet.
Type “B” double wall or equivalent vent pipe is
recommended for the entire venting system. However,
single wall metal vent pipe may be used within the
structure in the latest edition of the National Fuel Gas
Code ANSI Z223.1 or in Canada CAN/CSA-B149.1
IMPORTANT NOTE
Do not use sheet metal screws at
the snap lock joints of Type B gas vents.
When venting multiple appliances through one
common duct, each appliance must have it’s own vent
temperature limit switch. All vent limit switches must
be wired in series so as to prevent any appliance from
fi
ring in the event of a blocked vent. Refer to ANSI
Z223.1 or, in Canada, to CAN/CSA-B149.1 for more
information on multiple venting.
3.2.3 Inspection and Replacement of
Existing Vent System with New
Components
If the Legacy is being installed to replace an
existing pool heater, it is recommended that a new
appropriate venting system be installed with the new
heater. However, if an existing venting system must be
used, be sure to carefully inspect the venting system to
ensure that it is in good condition and continues to be
appropriate for the Legacy heater. Replace any parts
that are not in good and serviceable condition with
new parts before completing the pool heater installa-
tion.
Section 4. Gas Connections
4.1
Gas Supply and Piping
Review the following general instructions before
continuing the installation.
Important:
Do not install LP gas units indoors.
WARNING
The Legacy pool and spa heaters are designed for
use with either natural gas or LP gas. Check the
rating plate on the inner panel to be sure that the
heater is designed to use the type of gas being
supplied.
DO NOT ATTEMPT TO CONVERT THIS
HEATER FOR USE WITH ANY OTHER TYPE OF
FUEL.
AVERTISSEMENT
Les appareils de chauffage à faibles émissions
Legacy pour piscines et cuves thermales sont
conçus pour être utilisés avec du gaz naturel ou du
gaz de pétrole liqué
fi
é (GPL). Véri
fi
ez l’information
inscrite sur la plaque signalétique du panneau
intérieur pour vous assurer que l’appareil est conçu
pour le type de gaz fourni.
NE PAS ESSAYER DE
CONVERTIR CET APPAREIL À UN AUTRE TYPE
DE GAZ.
1.
Gas piping installation must be in accordance
with the latest edition of ANSI Z223.1 and all
local codes. In Canada, the installation must be
in accordance with CAN/CSA B149.1 and all
local codes that apply.
2.
Check the gas supply to be sure that it is the
same as the gas indicated on the heater’s rating
plate. Legacy heaters, as shipped from the
factory, are certi
fi
ed to operate within the altitude
range indicated on the rating plate. If a
fi
eld
conversion to a different altitude range should be
necessary, manifold kits are available for chang-
ing the altitude range of the heater. See Table 1
in section 1.7.1 of this manual to determine the
correct altitude designation for your heater. Refer
to Section 11 “Parts List” to order the correct
part number of the manifold kit needed. When
changing the altitude range of the heater, be sure
to
fi
ll out the altitude conversion label, included
in the kit. Apply the label next to the original
rating plate.
CAUTION
Permanent damage to the gas valve will occur if the
following procedures are not followed.
ATTENTION
Vous endommagerez la soupape de gaz si vous ne
respectez pas les procédures suivantes.
3. Use
the
fi
gures in Table 4 to size the gas inlet
piping from the gas meter to the heater. Check all
local codes for compliance before installing the
heater.
4.
Install a sediment trap (drip leg) ahead of the
gas controls (see Figure 6). Fit the trap with a
threaded cap which can be removed for cleaning.
5.
Install a manual gas shutoff valve for service
and safety. Do not use a restrictive gas cock.
DO NOT USE FLEXIBLE GAS PIPING, it will
restrict the gas
fl
ow to the heater.
Summary of Contents for Legacy LRZM
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