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TURBULATORS:
27.
NOTE: Improper location of a turbulator can cause malfunction of the heater,
property damage, and will void the heater warranty.
Tube Heaters are supplied with all required turbulator(s) factory installed into
the tube(s). Tubes with turbulators are installed at the vent end of the system
configuration and are clearly labeled for easy identification.
MODEL
SET / ITT 200/140 - 60/50
SET / ITT 175/125 - 60/50
SET / ITT 155/110 - 50
SET / ITT 155/110 - 40
SET / ITT 130/90 - 40
SET / ITT 130/90 - 30
MODEL
SETU / ITTU 200/140 - 30U
SETU / ITTU 175/125 - 30U
SETU / ITTU 155/110 - 30U
SETU / ITTU 155/110 - 20U
SETU / ITTU 130/90 - 20U
28. HIGH ALTITUDE INSTALLATION
When this appliance is installed above the altitude stipulated below, the input must be de-rated
by 4% for each 1000 ft . If your local utility supplies gas with a de-rated heat content, no
orifice change is required in the heater . Check with your local utility regarding de-rating.
USA: The factory installed orifice for this appliance is approved for altitudes zero to
2000 feet above sea level. Above 2000 feet, refer to table below.
Canada: The factory installed orifice for this appliance is approved for altitudes zero to
4500 feet above sea level. When installed above 4500 feet, refer to the table below.
GP-MSET-EX-6A
SET(U) / ITT(U) Manual
RD: MAY 2009
RL: 06A- BA
TURBULATOR
LENGTH
10' (3 m)
SET / ITT 110/75 - 40
10' (3 m)
SET / ITT 110/75 - 30
not required
SET / ITT 100/70 - 20
10' (3 m)
SET / ITT
10' (3 m)
SET / ITT
14' (4.3 m)
TURBULATOR
LENGTH
10' (3 m)
SETU / ITTU 130/90 - 15U
10' (3 m)
SETU / ITTU 110/75 - 20U
not required
SETU / ITTU 110/75 - 15U
10' (3 m)
SETU / ITTU 80/60 - 15U
SETU / ITTU 80/60 - 10U
10' (3 m)
~ ORIFICE TABLE NEXT PAGE ~
44
TURBULATOR
MODEL
80/60 - 30
80/60 - 20
TURBULATOR
MODEL
LENGTH
10' (3 m)
14' (4.3 m)
10' (3 m) S/S
14' (4.3 m)
14' (4.3 m)
LENGTH
14' (4.3 m)
10' (3 m)
14' (4.3 m)
14' (4.3 m)
14' (4.3 m)
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