
Additional Requirements
The Commonwealth of Massachusetts stipulates the
following additional requirements:
1
−
Gas furnaces shall be installed by a licensed
plumber or gas fitter only.
2
−
The gas cock must be T handle" type.
Unit Heater Installation
WARNING
CAUTION
The appliance shall not be installed downstream from
evaporator coils or cooling units.
Install the unit in the desired location as governed by
clearances, vent connection, air direction, gas supply,
electrical supply and service accessibility.
On SEP models 100, 115, 145, 175, and 200, mounting
nuts are furnished at the balance point (two positions
only). On SEP models 230, 250, 300, 345 and 400,
mounting nuts are furnished at each corner of the unit.
Mounting nuts will accommodate 3/8" x 16 threaded rods.
1
− Cut threaded rods to desired length and
slide a
3/8" nut onto the rod.
2
− Slide a flat washer onto the threaded rod AFTER
the nut (7/16" inside diameter X 1" outside
diameter X 1/16" thick washer).
3
− Screw the rods (two or four) into the mounting
nuts on the unit.
4
− Tighten
nuts to secure unit to rods.
IMPORTANT
TABLE 4
MAXIMUM MOUNTING HEIGHTS
Model Number
Feet (Meters)
SEP
−
100 and SEP
−
115
16 (4.9)
SEP
−
145, SEP
−
175, and
20 (6.1)
SEP
−
200
SEP
−
230, SEP
−
250,
SEP
−
300, SEP
−
345 and
30 (9.1)
SEP
−
400
Combustion and Ventilation Air
Adequate facilities for supplying air for combustion and
ventilation must be provided in accordance with the
current edition of ANSI Z223.1, section 5.3, and
CSA
−B149 installation compliance
codes, or applicable
provisions of local building codes.
All gas
−fired appliances require air to be used for the
combustion process. In many buildings today, there is a
negative indoor air pressure caused by exhaust fans, etc.
If sufficient quantities of combustion air are not
available, the heater or another appliance will operate
in an inefficient manner, resulting in incomplete
combustion which can result in the production of
excessive carbon monoxide.
CAUTION
If indoor air is to be used for combustion, it must be free
of the following substances or the life of the heat
exchanger will be adversely affected: chlorine, carbon
tetrachloride, cleaning solvent, halogen refrigerants,
acids, cements and glues, printing inks, fluorides, paint
removers, varnishes, or any other corrosives.
Rotation of Combustion Air Inducer
(SEP
−100, −115 and −145 Only)
The combustion air inducer on SEP models
−100, −115
and
−145 may be rotated 90° either to the left or right of
the original vertical position in order to better suit the
application.
NOTE
− It is not permissible to rotate the combustion
air inducer on SEP models
−175, −200, −230, −250,
−
300,
−345 and −400.
Rotate the combustion air inducer assembly as follows:
1
−
Remove the heater from the carton. Decide the best
unit heater orientation. The vent can be installed in
one of three discharge positions: up, left, or right.
Improper installation, adjustment, alteration, ser-
vice or maintenance can cause property damage,
personal injury or loss of life. Installation and
service must be performed by a licensed
professional installer (or equivalent), service
agency or the gas supplier.
As with any mechanical equipment, personal
injury can result from contact with sharp sheet
metal edges. Be careful when you handle this
equipment.
Do not use the gas manifold pipe to lift unit. Any
excessive upward or downward force on the
manifold pipe and bracket assembly can cause
the ignition burner and igniter to become
misaligned.
Insufficient combustion air can cause headaches,
nausea, dizziness, asphyxiation or death.
5
Содержание SEP-100
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