 SBDYR
"YEAR-ROUND" MAKE-UP AIR SYSTEMS
Model SBDYR serves the same make-up air function as the
YR-RYR system with direct gas-fired heating replacing indirect gas-fired furnaces. The
YR-RYR system concept of "year round" modulated discharge air control is
retained with the SBDYR. A supplementary cooling thermostat is also included.
A matching SB coil section, with cooling coil, is added
upstream of the SBD direct gas-fired burner section. This results in a
"draw-thru" air system with discharge air reheat control. Space over-riding
heating and cooling temperature control is available as an add option. The model SBD
direct gas-fired make-up air system is detailed in Hastings Bulletin SBD-1.
SBEYR "YEAR-ROUND" MAKE-UP AIR
SYSTEMS
As with the SBDYR, model SBEYR also serves the same
makeup air function as the YR-RYR system with UL listed electric heater replacing indirect
gas-fired furnaces. The SBEM makeup air operating sequence is furnished to retain the
YR-RYR system concept of "year-round" modulated discharge air control. A
supplementary cooling thermostat is also included,
In the case of the SBEYR, a matching SB coil section, with
cooling coil, is added upstream of the SBE electric heater section. This arrangement also
results in a "draw-thru" air system with discharge air reheat control. Space
over-riding heating and cooling temperature control is available as an add option. The
model SBEM electric make-up air system is detailed in Hastings Bulletin SBE-1.
SBC-SBCH COOLING OR COOLING/HEATING
UNITS
Model SBC designates a SB series air handling unit with
cooling coil. Model SBCH has both a cooling and heating coil with a SB blower section.
Matching SB coil sections are available for all SB series ventilating or air handling
units detailed in Hastings Bulletin SB-1.
Evaporator or chilled water cooling coils and steam or hot
water heating coils can either be mounted individually in SB series coil sections, or
furnished in series for combination cooling and heating applications. Contact your local
Hastings representative for selection and dimensional information.
Engineers Specifications
Furnish and install the following Hastings
("year-round" make-up air system) (cooling/heating system).
| Model No |
SCFM |
Total
ESP |
Blower
Motor HP |
Voltage
Phase |
Heating |
Cooling |
Condensing
Unit |
| Ent.
Air Temp |
MBH Input |
Ent. Air
Temp |
MBH Input |
Model No |
Voltage
Phase |
General - the air handling, heating,
cooling and filter sections shall be furnished as a factory assembled and wired system for
(rooftop) (indoor suspended) (indoor platform) mounting with (nat- ural) (propane)
gas-fired furnace(s).
Air Handling Section - shall have 16 gauge
aluminized steel cabinet and 12 gauge aluminized steel base frame channels, fibre glass
insulated, with primed and enamel finish. Blower wheels shall be forward curved, double
width, double inlet class 1 with permanently lubricated ball bearings and adjustable V
belt drive. See Bulletins RHS-1 or IHS-1 for detailed blower section specifications.
Heating Section - shall include one or more AGA
design certified duct furnaces with (Aluminized steel) (type 409 stainless steel (type 321
stainless steel) heat exchangers and 18 gauge aluminized steel burners having type 430
stainless steel ribbon inserts See Bulletins RD-1 or SD-1 for detailed duct furnace
specifications.
Note: Type 409 stainless steel heat exchangers are
recommended.
Rooftop duct furnaces shall be furnished with an
intermittent pilot electronic spark ignition system and a slide out tray for easy
maintenance. (RYR) (RCH) systems shall have (gravity) (power venter) model furnaces.
Indoor duct furnaces shall be furnished with a hinged
access panel for easy maintenance. (YR) (CH) systems shall have (gravity furnaces) (power
venters included with furnaces).
Cooling Section - shall include a high performance,
energy efficient, aluminum fin, copper tube evaporator coil, with thermal expansion
valve, sized to match the specified air cooled condensing unit. Condensate pan and drain
connection shall be furnished with the coil section.
Filter Section - shall have V-bank frames less
filters.
Control System - shall be 24 volt with control
transformer.
YR-RYR systems shall include automatic seasonal changeover
control, "year-round" discharge air temperature control and space over-riding
cooling and heating temperature control complete with remote control station with
operating switches and indicating ights.
CH-RCH systems shalI include space cooling and heating
temperature control with fan and system switches.
Air Cooled Condensing Unit - as scheduled,
shall be mounted outdoors and field connected to the evaporator coil and thermal expansion
valve and charged with R-22 refrigerant. All condensing units shall be furnished with
standard operating and safety controls.
Note: See Bulletin CU-1 for detailed air cooled
condensing unit specifications.
YR-RYR system condensing units shall be furnished with
control transformer, liquid line solenoid valve, liquid line drier and sight glass and hot
gas by-pass regulator.
CH RCH system condensing units shall be furnished with
control transformer and liquid line solenoid valve.
Options and Accessories - furnish the following
items (select from page 6 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.
Printed in U.S.A. |
