Specifications

GUIDE SPECIFICATIONS — 619C CEILING-SUSPENDED UNITS
COMMERCIAL CEILING-SUSPENDED FAN COILS
HVAC GUIDE SPECIFICATIONS
SIZE RANGE: 1
1
⁄ 2 AND 2 TONS COOLING CAPACITY
MODEL NUMBER: 619C
PART 1 — GENERAL
1.01 SYSTEM DESCRIPTION
Indoor, under-ceiling mounted, direct-expansion fan coil to
be matched with the 538S commercial condensing unit.
1.02 QUALITY ASSURANCE
Units shall be rated (when matched with appropriate out-
door unit) per ARI Standard 210/240. Units shall be certi-
fied by UL and CSA.
1.03 DELIVERY, STORAGE, AND HANDLING
Units shall be stored and handled per manufacturer’s rec-
ommendations.
1.04 WARRANTY (For Inclusion By Specifying Engineer).
PART 2 — PRODUCTS
2.01 EQUIPMENT
A. General:
Indoor, direct-expansion, ceiling-suspended fan coil. Fan
coil shall be shipped complete with cooling coil, fan, fan
motor, piping connectors, electrical controls, solid-state
electromechanical control system, and ceiling mounting
brackets.
B. Unit Cabinet:
Cabinet shall be zinc-coated bonderized steel finished
with a baked enamel paint. Inlet grilles shall be attrac-
tively styled, high-impact polystyrene. Matching mounting
brackets shall be provided.
C. Fans:
Fans shall be centrifugal blower type with air intake in the
bottom rear of the unit and discharge in the front. Auto-
matic motor-driven vertical air sweep shall be provided.
D. Coils:
Coils shall be copper tube with aluminum fins and galva-
nized steel tube sheets. Fins will be bonded to the tubes
by mechanical expansion. A drip pan under the coil shall
have a drain connection for attachment of piping to re-
move condensate.
E. Motors:
Motors shall be permanently lubricated with inherent
overload protection. Fan motor shall be 3-speed.
F. Controls:
Controls shall consist of a solid-state electromechanical
control system which shall control space temperature and
determine optimum fan speed. The temperature control
range shall be from 64 F to 84 F. The unit shall have the
following functions as a minimum:
1. An automatic restart after power failure at the same
operating conditions as at failure.
2. Non-programmable thermostat to provide cooling
and heating set points and day/night setback modes.
3. Wired control to enter set points and operating
conditions.
4. Filter status indication after 250 hours of indoor fan
operation.
5. Automatic airsweep control to provide on or off acti-
vation of airsweep louvers.
6. Cooling mode to provide modulating fan speed
based on difference between temperature set point
and space temperature.
7. Fan only operation to provide room air circulation
when no cooling is required.
8. A 50-ft indoor to outdoor control connection cable
shall be provided with the fan coil unit.
9. Fan speed control shall be user-selectable: high, me-
dium, low, or automatic operation during all operating
modes.
10. A time delay shall prevent compressor restart in less
than 2 or 4 minutes (adjustable).
G. Filters:
Unit shall have filter track with factory-supplied cleanable
filters.
H. Electrical Requirements:
Unit shall operate on a 208-v or 230-v, 60 Hz power sup-
ply as specified on the equipment schedule.
I. Operating Characteristics:
1. The unit shall be matched with an outdoor unit. The
combination of the outdoor unit and the indoor-fan
coil unit shall have a total net cooling capacity of
Btuh or greater at conditions of fan
speed with entering-air temperature at the evaporator
coil of F dry bulb and F wet bulb. Out-
door ambient temperature of air entering the con-
denser of F.
2. The system shall have a minimum listed SEER
(seasonal energy efficiency ratio) of at ARI
conditions.
J. Special Features (Field Installed):
Certain features are not applicable when the features
designated by * are specified. For assistance in amending
the specifications, contact your local representative.
* 1. Internal Condensate Pump:
The condensate pump shall remove condensate from
the pan when gravity cannot be used. The lift capabil-
ity shall be 20 inches. Float control shall be in the con-
densate sump to shut unit down in case of pump
malfunction.
2. Fresh Air Intake Kit:
Kit shall include filter and duct connections to provide
for outdoor ventilation air.
3. Indoor Guard Kit:
Kit shall include a guard for the discharge grille to pre-
vent objects from entering the air sweep mechanism.
4. Electronic Programmable Thermostat:
Thermostat shall be commercial grade and shall pro-
vide 7-day, 4-event scheduling. Integral subbase shall
be included. Thermostat shall also provide 3-speed
fan switchover capability, air sweep auto changeover,
and shall not require a battery to retain memory.
5. Power Ventilation Kit:
Kit shall be used with the accessory fresh air kit when
fresh air must be ducted over long distances. The kit
will overcome duct static to provide a constant supply
of ventilation air. Kit consists of booster fan and adjust-
able speed control to properly balance fan to achieve
required airflow rate.
6. 24-Hour Automatic Start/Stop Timer:
Device shall provide a minimum 24-hour timer cycle
for system auto. start/stop.
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