Schwank 2-Stage Series - Manual (Page 45)

45
SET(U)-F / ITT(U)-F Manual
IM091221
RD: FEB 2014
RL: 8B
MODEL
TURBULATOR
LENGTH
SET / ITT 200/140 - 50 10’ (3 m)
SET / ITT 175/125 - 60/50 10’ (3 m)
SET / ITT 155/110 - 50 not required
SET / ITT 155/110 - 40 10' (3 m)
SET / ITT 130/90 - 40 10' (3 m)
SET / ITT 130/90 - 30 14' (4.3 m)
SET / ITT 200/140 - 60 6’ (2 m) **
MODEL
TURBULATOR
LENGTH
SETU / ITTU 130/90 - 15U 14' (4.3 m)
SETU / ITTU 110/75 - 20U 10' (3 m)
SETU / ITTU 110/75 - 15U 14' (4.3 m)
SETU / ITTU 80/60 - 15U 14' (4.3 m)
SETU / ITTU 80/60 - 10U 14' (4.3 m)
26 . TURBULATORS:
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.
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.
~ ORIFICE TABLE NEXT PAGE ~
27. HIGH ALTITUDE INSTALLATION
MODEL
TURBULATOR
LENGTH
SETU / ITTU 200/140 - 30U 6’ (2 m)
SETU / ITTU 175/125 - 30U 10’ (3 m)
SETU / ITTU 155/110 - 30U not required
SETU / ITTU 155/110 - 20U 10' (3 m)
SETU / ITTU 130/90 - 20U 10' (3 m)
MODEL
TURBULATOR
LENGTH
SET / ITT 110/75 - 40 10' (3 m)
SET / ITT 110/75 - 30 14' (4.3 m)
SET / ITT 100/70 - 20 10’ (3 m) S/S
SET / ITT 80/60 - 30 14' (4.3 m)
SET / ITT 80/60 - 20 14' (4.3 m)
** 200 x 60 ft: Remove 4 ft piece of
turbulator from upstream end of
last tube prior to installation