Installation
12
GANE-SVX001B-EN
Clearances
Each Gas Unit Heater shall be located with respect to
building construction and other equipment so as to permit
access to the Unit Heater. Clearance between vertical walls
and the vertical sides of the Unit Heater shall be no less
than 6-inches (152mm). However, to ensure access to the
control box, a minimum of 18-inches (457mm) is required
for the control box side. A minimum clearance of 6 inches
(152mm) must be maintained between the top of the Unit
Heater and the ceiling. The bottom of the Unit Heater must
be no less than 12-inches (305mm) from any combustible.
The distance between rear of unit and vertical wall should
be no less than 18-inches to maintain inlet air flow. The
distance between the flue collector and any combustible
must be no less than 6-inches (152mm). Also see AIR FOR
COMBUSTION and VENTING sections.
NOTICE
Increasing the clearance distances may be necessary if
there is a possibility of distortion or discoloration of
adjacent materials.
WARNING
Make certain that the lifting methods used to lift the
heater and the method of suspension used in the field
installation of the heater are capable of uniformly
supporting the weight of the heater at all times. Failure
to heed this warning may result in property damage or
personal injury!
WARNING
Make sure that the structure to which the unit heater is
to be mounted is capable of safely supporting its
weight. Under no circumstances must the gas lines, the
venting system or the electrical conduit be used to
support the heater; or should any other objects (i.e.
ladder, person) lean against the heater gas lines,
venting system or the electrical conduit for support.
Failure to heed these warnings may result in property
damage, personal injury, or death.
CAUTION
Unit Heaters must be hung level from side to side and
from front to back, see
and
. Failure to
do so will result in poor performance and/or premature
failure of the unit.
WARNING
Ensure that all hardware used in the suspension of each
unit heater is more than adequate for the job. Failure to
do so may result in extensive property damage, severe
personal injury, or death!
of units.
Figure 3.
Heater mounting*
Figure 4.
Heater suspension
Note:
Threaded rod is 3/8-inch.
Gas Piping
WARNING
To avoid damage or possible personal injury, do not
connect gas piping to this unit until a supply line
pressure/leak test has been completed. Connecting the
unit before completing the pressure/leak test may
damage the unit gas valve and result in a fire hazard.
WARNING
Do not rely on a shut-off valve to isolate the unit while
conducting gas pressure/leak tests. These valves may
not be completely shut off, exposing the gas valve to
excessive pressure and damage.
Pipe Sizing
To provide adequate gas pressure to the gas unit heater,
size the gas piping as follows:
1. Find the cu. feet/hr. by using the following formula:
Cu
feet
hr
InputBtu
Hr
1000
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