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12
MATCH LIT SYSTEM CONNECTION DIAGRAMS
250K — 300K+ BTU Systems
1. Locate FK2
Parts include two Whistle-Free Flex Lines, key valve,
escutcheon plate, and keys.
3" Key
Escutcheon Key Valve
(2) 3/4" x 3" Nipple
(2) 3/4" Tees
(1) 3/4" x ½" MM Reducer Fitting
YOUR INSTALLATION MAY NOT REQUIRE ALL PARTS.
Whistle-Free Flex Lines
STEP 1- FIT250
STEP 1- FIT250
STEP 1- FIT250
2. Remove Flared Fittings from Whistle-Free Flex Lines
(FK2) Removing flared fittings first makes installation
easier.
3. Connect to
Coupling
Do not use the 2nd
3/4” x 3” Nipple
with this install.
Connect ½" x 3/4"
Reducing Fitting to
½" Coupling located
on the bottom of the
aluminum plate.
Then connect 3/4" Tee
to ½" x 3/4" Reducing
Fitting.
3A. Connect to
Coupling
Do not use the
1/2” x 3/4” Reducer
fitting with this install.
Connect 3/4" x 3"
Nipple to 3/4" Coupling
located on the bottom
of the aluminum plate.
Then connect 3/4" Tee
to 3/4" x 3" Nipple.
Flared
Fitting
Whistle-Free Flex Line
Plate
3/4" x 3" Nipple
3/4" Tee
Coupling
Plate
½" x 3/4" Reducing
Fitting
3/4" Tee
Coupling
Apply thread
sealant here
Apply thread
sealant here
Apply thread
sealant here
Apply thread
sealant here
STEP 3
Flared Fitting
Flared End
Thread
sealant is
applied
to this
end only
throughout
instructions
12" Key
