Request for Proposals ("erfp")
DUAL THERMOKING SLR65 ROOF MOUNTED HVAC SYSTEMS
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- CONVECTIVE BASEBOARD HEATERS
- REAR POSITION ROOF HATCH
- ELECTRICAL, ELECTRONICS AND DATA COMMUNICATION SYSTEM
- TWO-WAY RADIO PRE-WIRING
DUAL THERMOKING SLR65 ROOF MOUNTED HVAC SYSTEMSDual Heavy-duty ThermoKing brand, SLR65 model, rooftop mounted HVAC systems shall be supplied. This system shall have a heating system rating of 132,000 BTU. The air conditioning components of the dual SLR65 units shall be rated at 132,000 BTU (total) when utilizing R134a refrigerant. The HVAC system shall incorporate dual TM-21 refrigerant compressor. The electronic climate control system shall be Thermo King - IntelligAIRE III.
A convective type heating system shall be mounted on each sidewall at the floor level, on both sides of the low-floor section of the bus. The heating system shall distribute uniform heat throughout the vehicle.
A Webasto, model DBW2020, (12-volt) diesel fueled auxiliary coolant heater shall be provided. The Webasto auxiliary heater shall utilize a control panel mounted within the driver’s compartment. The coolant heater shall provide additional heating capacity to passenger compartments as well as quick start on cold mornings.
Driver's area shall be heated and/or cooled by a heater, defroster and air conditioning system. The heater and defroster shall provide 60,000 BTU with 475 CFM of air flow. The driver's air conditioning shall provide 24,000 BTU with 475 CFM. Both heat and cool shall be controlled by electric over vacuum dash-mounted controls. The system shall include 4 speed fans with a fresh air intake mode. Windshield air flow shall be through molded dash air ducts providing even air diffusion.
A Transpec brand, model 1000 series, five (5) position roof ventilator and emergency escape hatch shall be installed in the roof over the rear axle of bus.
Twin Vision brand, all LED, solid-state electronic sign system shall be supplied. The signs shall be mounted in the upper windshield area and in the upper transom of the first curbside window. Each LED shall have a special ultra violet protection for long life and reduced fading. The front sign shall include 16 rows x 160 columns with a display area of 7.9” x 63”. The side sign shall include 14 rows x 108 columns with a display area of 4.25” x 42.25”. Up to 10,000 message lines shall be able to be stored in the ODK control console mounted overhead, within easy reach of the driver. The sign system shall be programmable with a USB flash drive.
The electrical system shall be designed to provide and distribute 12-volt DC power to all electrical components in the bus, including the passenger compartment HVAC system.
A V-belt driven, Leece Neville brand, 320 amp, air cooled, 12-volt alternator shall be supplied. This alternator shall supply electrical power to all systems on the bus including the roof mounted ThermoKing HVAC systems.
Dual 8-D Series batteries, providing 1,375 cold cranking amps each shall be supplied. The batteries shall be located on the roadside of the vehicle and shall be accessible through a service access door. The batteries shall be supported on a slide-out tray fabricated from stainless steel.
All general purpose wiring shall be cross linked polyethylene insulated and number, (function) coded for positive identification, and shall meet the requirements of SAE recommended practice J878a, Type SXL. Precautions shall be taken to avoid damage from heat, water, solvents or chafing by proper routing, clamping and the use of grommets or suitable elastomeric cushion materials. Harnesses shall be designed to resist abrasion by the use of machine mesh woven plastic loom. Harnesses shall be sectional, terminating at insulated multi pin quick disconnects or junction blocks. All main electrical harnesses incorporate 10% spares.
A two-way radio pre-wire box with 12-volt DC supply, ground harness and antenna cable conduit shall be included/installed.
A public address amplifier and flexible 36” Gooseneck microphone with four (4) baffled interior and one (1) waterproof exterior speaker shall be included. Interior speakers shall be mounted two (2) front and two (2) rear in the face of the ceiling cove. Exterior speaker shall be located at the front door entrance area.
For driver’s comfort a 6” heavy-duty, 2-speed fan shall be mounted on the dashboard and controlled by a three position switch.
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