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will not separate and so that the weight of the vent
pipe does not rest on the heater draft hood. All con-
nections should be made with rustproof sheet metal
screws. Do not weld or fasten the vent pipe to the
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, terminat-
ing 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 ten (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 flue products (see Figure 5). The top of
the vent cap must be at least five feet in vertical height
above the drafthood outlet.
Type “B” double wall or equivalent vent pipe is
recommended. However, single wall metal vent pipe
may be used as specified 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
firing 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 Lite2 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 Lite2 heater. Replace any parts
that are not in good and serviceable condition with new
parts before completing the pool heater installation.
SECTION 4.
Gas Connections
4.1 Gas Supply and Piping
Review the following general instructions before
continuing the installation.
WARNING
The Lite2 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 configured to use the
type of gas being supplied.
DO NOT
ATTEMPT TO CONVERT THIS HEATER
FOR USE WITH ANY OTHER TYPE OF
FUEL.
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. Lite2 LG heaters, as shipped from the
factory, are certified to operate within the
altitude range indicated on the rating plate. If a
field conversion to a different altitude range
should be necessary, manifold kits are available
for changing the altitude range of the heater. See
Table 1 in section 1.7.1 of this manual to deter-
mine 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 fill out the altitude conversion
label, included in the kit. Apply the label on the
inner panel of the heater, next to the original
rating plate.
CAUTION
Permanent damage to the gas valve will occur
if the following procedures are not followed.
3.
Use the figures 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.
