KKK-A-1822 E
ambulance (with doors open) shall be heat soaked for three hours in an ambient temperature of
35° C (95° F), then the engine started and allowed to run at high-idle setting (see 3.7.6), while
the transmission is in park or neutral, with test verification and thermocouples placement as
specified in 3.13.4. Air conditioning equipment may be in the recirculating mode and all
compartment openings, including partition doors/windows, shall be closed. When available,
chassis manufacturers interconnection points shall be utilized.
3.13.5.1 AUXILIARY AIR CONDITIONING CONDENSER.
When specified by the purchaser (see 6.2-oo) or required for high temperature geographic
areas or furnished as standard equipment, an auxiliary condenser shall be provided which
will allow for maximum system performance, based on the air conditioning and ambulance
manufacturer's recommendations. If the condenser is located above the cab, it shall not
block the emergency lights. All added refrigeration lines and fittings shall be mechanical
fittings compatible with OEM components furnished by the chassis manufacturer. An
auxiliary condenser may be furnished or specified to function in lieu of the chassis
manufacturer's condenser provided it meets or exceeds all other system performance
requirements.
3.13.6
VENTILATION CRITERIA.
Ventilation system(s) of the driver and patient compartments shall provide a complete
change of ambient air within each compartment at least every two minutes with the vehicle
stationary. Ventilation shall be separately controlled within each compartment. Fresh air
intakes shall be located towards the front of the vehicle and exhaust vents shall be located
on the upper rear of the vehicle. Exhaust vents may be located on the rear lower half of the
module/body, provided the vent/device incorporates a reverse flow damper to prevent
backdraft and intrusion of vehicle engine exhaust, dust, dirt, or road spray. The patient
compartment shall be ventilated by the air delivery system of the environmental equipment
(heater-air conditioner) or by separate system(s), such as power intake, exhaust ventilator(s).
3.13.7
ENVIRONMENTAL CONTROLS.
Adjustable, manual or thermostatically operative controls shall permit heating and/or air
conditioning and ventilation in either compartment without affecting the other compartment.
Switches and controls shall be located in EMT's panel and/or remote panel and identified
for function and operating position (see 3.7.9 through 3.7.11). Switches, wiring and control
components shall be rated at a minimum of 125 percent of the maximum electrical load of
the blower(s) and other components (see 3.7.2). Blower or fan system shall have at least
three speeds (excluding "OFF"). Separate non-corroding brass, bronze, stainless steel,
plastic or other inherently corrosion proof shutoff valves, for the patient compartment hot
water heating system, shall be provided to allow servicing and shutoff. The use of vacuum
operated shutoff valves is acceptable provided the above criteria is met and the valve
provides inherent sealing when vacuum is removed. This sealing shall prevent engine
cooling system pressure and water pump pressure from causing any leakage when vacuum
is removed. Air systems shall have adjustable louvers to direct the flow of air.
3.13.8 PATIENT COMPARTMENT SOUND LEVEL CRITERIA.
Unless otherwise specified (see 6.2-pp) by Federal or State regulations, the patient compartment decibel
level shall not exceed 80 dB and shall be tested in accordance with AMD STANDARD 006.
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