 SBE SERIES ELECTROFLO HEATING SYSTEM
Engineers Specifications
Furnish and install the following Hastings electric heating
system.
| Model No. |
KW Heating
Valve |
SCFM |
Total S.P. |
Motor HP |
Supply Voltage
and Phase |
Blower Section:
A. Blower wheels shall be statically and dynamically
balanced forwardly curved, double width, double inlet, class 1.
B. Blower wheels shall be mounted on solid turned ground
shaft with keyway for driven shaft.
C. Bearings shall be ball bearing, self-aligning,
pre-lubricated, pillow-block or flange mounted.
D. Blower housings, bearings and adjustable moto base
shall be mounted on a reinforced frame to insure rigidity and quiet operation.
E. The driver and driven sheaves shall be of the keyed hub
type. The driven sheave shall be of a fixed pitch diameter and the driver sheave shall be
of a variable pitch above 10 HP. V-belt drives shall be sized for 135% of motor
horsepower.
F. Cabinet shall be constructed of high
quality(16)(14) gauge aluminized steel to insure long rust-free life.
G. Access panels shall be provided to allow easy access to
motors and filters(if ordered).
H. Outside surface of cabinet shall be primed and finished
with a coat of enamel.
Heater Section:
A. The heating section shall be furnished with a UL Listed
electric open coil heater. The elements shall be constructed of 80% nickel and 29%
chromium with steos arranged to prevent stratification when operating at less than full
capacity.
B. Coil terminals shall be of stainless steel. Terminal
insulators and bracket bushings shall be constructed of ceramic and securely positioned.
Terminals shall be machine crimped to coil.
C. Frame shall be constructed of heavy gauge galvanized
steel supports with stiffening ribs and gussets spaced no more than 4" apart, spot
welded to the casing.
D. A hinged, NEMA 1 terminal box shall be provided to
assure that heating elements and safety controls are in the airsteam.
E. Safety devices shall include a disc type automatic reset
thermal cutout for over-temperature protection. For secondary protection, a sufficient
number of heat limiters in the power lines shall de-energize elements if the primary
cutout fails. All safety devices shall be serviceable through the terminal box without
removing the heating coil from the electric heating section.
F. Built-in components shall include de-energizing
contractors, transformers with primary fusing, pressure-type airflow switch and
connecting terminal block(s) for wiring of power supply.All fusing shall be per UL and
NEC.
G. The electric heater shall be mounted in an aluminized
steel heating section cabinet which has been primed and coated with enamel to match the
blower section.
Motor:
A T-frame, ODP, 1800 RPM prelubricated ball bearing type
motor shall be furnished for voltage as scheduled.
Temperature Control
Unit shall include (standard-steo) control system to program
equipment in accordance with (SBEH)(SBEM)(SBEV) operating sequence.(Please desired control
system from Page 2 of this bulletin.)
Electric Controls:
The following additional electric control shall be
furnished as part of this heating system:
- No Glo" safeguard system.
- Air proving switch.
- Control transformer, 115 volts.
- Motor starter.
- NEMA 1 control box
- Remote control station with operating switches and
indicating lights.
Assembly:
The system shall be factory assembled and wired with the
exception of controls tg\hat are remote to the unit.
Options and Accessories:
The following items are to furnished (Insert desired item
from page 4 of this bulletin.)
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