York B4IH-360, Техническая информация

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13.14.- Firestat
The unit includes, as standard equipment, an impulse air
probe that locks out at 80° C and must be reset manually to
resume operation.
Also available, as an accessory, is a manual adjust and reset
temperature probe to be fitted in the impulse plenum of the
unit. If the set temperature is reached in this area, the unit is
locked out and the probe and control must be reset manually
to resume operation.
The fire detecting thermostat (Firestat) is a protection device
for the unit. It should not be used as protection system for
the building or other installations. Use is subject to compli-
ance with local regulations that affect the unit (with regard to
ventilation systems, fire prevention, etc.). Depending upon
these regulations, this option could require the use of an
economiser or a motor-driven damper.
13.15.- Copper fin coils
Coils with copper fins achieve the greatest anticorrosion
protection for installations in seaside areas, ensuring 100%
efficiency. Applied to both condensing (outdoor) as well as
evaporating (outdoor) units. See section No. 4.. for weight
increase on standard units.
13.16.- "Blue Fin" coils
Aluminium fins with a varnish type coating and a polyurethane
base, offering anticorrosion resistance of up to 1000 H.N.S.
(ASTM-B117).
13.17.- Mounting base, Roof Curb, fixed type
For installing on flat rooftops without any pitch. Structure
made of galvanized steel sheeting, supplied as a kit to be
assembled and installed on the job site.
Allows assembling the ducts directly from inside the building,
prior to location of the rooftop unit, and provides an airtight
bond between the unit and the roof.
The roof curb assembly comprises two parts. In the duct
connecting section, it forms a closed frame that fits beneath
the base of the unit. A 40 x 25 mm. self-adhesive gasket is
supplied for application along the entire contact perimeter of
the frame with the base, thus achieving an airtight seal. For
the condensing section, a support is supplied for location
beneath the compressor compartment.
Both parts of the roof curb must be anchored to the support-
ing structure of the roof. The nuts and bolts supplied can be
used for this purpose; or welding. To avoid water or humidity
seeping into the interior of the building, the full external pe-
rimeter of both parts must be insulated and sealed with the
same material used to finish the roof. See mounting details
in Fig. 15a.
13.18.- Mounting base, Roof Curb, adjustable
type
For installation on rooftops with pitches of up to 4° (7%) or
6.5° (11%), depending upon the location of the unit. With
characteristics similar to those of the fixed version, but with
the advantage of being able to level the supporting surface of
the unit to compensate the pitch of the rooftop. See mounting
details in Fig. 15b.
the unit can operates correctly at minimum outdoor tempera-
tures of -18° C.
13.10.- Electric heater
Available for cool only and heat pump models. 7, 50 AND
60 kW capacities. Delivered assembled, inside the impulse
plenum of the unit.
Power supply to the heater must be independent of the gen-
eral power supply, and be equipped with its own automatic
switch (not supplied). See section No. 6.2.
13.11.- Hot water coil
Located within the impulse plenum of the unit. Heating capaci-
ties of from 115 to 140 kW (with water at 80/65° C). Includes
all necessary hydraulic and control components: -way mixing
valve, 0-10v proportional actuator and antifreeze probe. See
details in Fig. 14.
Location of the impulse duct should be indicated when plac-
ing the order.
Hot water coil
Model 360 Model 480
Air flow m /h 19 000 21 000 2 000 22 000 25 000 28 000
Heating
capacity
kW 115 121 126 124 11 140
Water flow m /h 7 7.5 7.5 7.6 7.9 8.6
Pressure
drop, water
circuit
kPa 26 0 0 0 8
- Fig. 14 -
- Data with water temperature at 80/65° C and air intake at 18° C.
- Total water volume: 10 l.
13.12.- Indoor air quality control probe
This option operates necessarily with the economiser. The
probe determines the degree of air pollution due to different
causes, such as occupation level of the room, cigarette smoke,
kitchens, carbon monoxide, etc.
When the preset limits are exceeded, this control unit acts
upon the economiser, adjusting the outdoor air damper,
without hindering the air conditioning function. Up to three air
quality levels can be selected on the probe. The normal level
is selected by default.
13.13.- Smoke detector
The smoke detector is installed in the return air section of
the unit.
If smoke particles are detected, the unit is locked out (off)
and must be reset manually to resume operation.
The smoke detector is a protection device for the unit. It
should not be used as protection system for the building or
other installations. Use is subject to compliance with local
regulations that affect the unit (with regard to ventilation
systems, fire prevention, etc.). Depending upon these regula-
tions, this option could require the use of an economiser or
a motor-driven damper.