Schwank IT(U) - Manual (Page 8)

GP-MSEM-BX-06A
SEM(U) / IT(U) Manual
RD: Aug 2006
RL: 06A
KH
5. PRE-INSTALLATION SURVEY
The SEM(U) / IT(U) heating system must
have gas piping of the correct diameter,
length, and arrangement to function properly.
For this reason, a layout drawing is nec-
essary. Carefully survey area to be heated, and for
best results, whenever possible, place burner
and combustion chamber in coldest area.
6. MOUNTING CLEARANCES
This heater must be mounted and positioned
to maintain the minimum clearance to com-
bustible materials as shown in FIGURE 1 &
TABLE 3. For recommended heater place-
ment refer to TABLE 2 (below). Heaters
should also be located and installed with re-
spect to building construction and equipment to provide a minimum clearance of 24 inches
from the end of burner housing for servicing
and cleaning of burner, blower and controls.
A minimum horizontal clearance of 4 ft. from
electrical meters, gas meters, regulators and
relief equipment is required by ANSI Z223.1.
& CSA B149.1-00.
TABLE 2 RECOMMENDED HEATER PLACEMENT
MODEL
MOUNTING
HEIGHTS
(FEET)
MAXIMUM
DISTANCE
BETWEEN
HEATERS
(FEET)
DISTANCE-OUTSIDE WALL
TO HEATER LONG AXIS
PARALLEL TO WALL (FEET)
HORIZONTAL ANGLE
SEMU/ITU 200 18 – 25 50 17 – 25
COMBUSTIBLE
CLEARANCE
SEMU/ITU 175 18 – 25 50 17 – 25
SEMU/ITU 155 16 – 21 45 15 – 20
SEMU/ITU 130 15 – 21 40 15 – 20
SEMU/ITU 110 13 – 19 35 13 – 18
SEMU/ITU 80 10 – 16 30 12 – 16
SEMU/ITU 60 8 – 14 25 11 – 15
SEMU/ITU 100 13 – 19 35 13 – 18
IMPORTANT: Continuous operation of single or multi-heater placement must
not cause any combustible material in storage to reach a
temperature in excess of 160
O
F.
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