| L-SERIES DIRECT GAS-FIRED SYSTEMS
TYPICAL GAS MANIFOLD AND BURNER - with
Insurance Authority Controls
Engineers Specifications
Furnish and install the following Hastings direct gas-fired
make-up air system.
| Model No. |
MBH Input |
SCFM |
Total S.P. |
Motor HP |
Voltage Phase
|
Type Gas |
Gas Pressure |
Housing:
The heater housing shall be of industrial quality with
welded construction of 10 gauge hot rolled steel. An observation port and access door
shall be provided. The observation port and access door shall be provided. The casing is
to be primed inside and out and the outside surface is to be finished with a coat of
enamel.
Blowers:
Heater shall be equipped with DWDI centrifugal (forward
curved) (backwardly inclined) fans, mounted on solid steel shaft(s) and supported by heavy
duty, self-aligning prelubricated ball bearings. Fan(s) are to be driven by V-belts sized
for 135% of motor horsepower. Fan motor shall be mounted on an adjustable base outside of
the air stream with a belt guard provided around the belt drive
Motor:
A T-frame, ODP, 1800 RPM prelubricated ball bearing type
motor shall be furnished for voltage as scheduled.
Burner:
The burner shall be a direct gas-fired line burner suitable
for complete combustion of natural gas, propane or propane-air mixture, and having a
turndown ratio of 22:1
Equipment Mounting Ledge:
The man fan motor and drive assembly, gas piping manifold,
all necessary valves and miscellaneous controls not required in control box shall be
mounted on a ledge outside of the air stream.
Gas and Electrical Controls:
The following controls shall be furnished with the direct
gas-fired make-up air system.
Main gas hand shut-off valve.
Main and pilot gas pressure regulators.
Pilot controls.
Electric safety shut-off valve.
Electronic modulating gas valve with temperature
controller.
High temperature limit switch.
Air flow switch
Ignition transformer.
Electronic flame safeguard system.
Motor starter.
Control transformer
NEMA 1 control box.
Remote control panel with switches and indicating lights
Assembly:
The system shall be factory assembled and wired with the
exception of controls that are remote to the unit.
Options and Accessories:
The following items are to be furnished (select from page 2
of this bulletin).
In order to maintain our policy of continuous product
improvement, we reserve the right to change prices, specifications, ratings or dimensions
without notice or obligation.
|
