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GUIDE SPECIFICATIONS
CEILING--SUSPENDED FAN COIL UNITS
Size Range: 1--1/2 to 5 Tons, Cooling Capacity
Carrier Model Numbers: 40QAC / 40QAQ
PART 1 -- GENERAL
1.01 SYSTEM DESCRIPTION
Indoor, direct expansion, ceiling--suspended fan coil.
1.02 AGENCY LISTING AND CERTIFICATION
1. A. Systems shall be rated and certified in accordance with
AHRI Standards 210/240. Units shall be listed in the AHRI
directory as a matched set.
2. Systems shall be listed with UL (Underwriters’
Laboratories) and UL, Canada.
1.03 DELIVERY, STORAGE, and HANDLING
Units shall be shipped in one piece and shall be stored and handled
per unit manufacturer’s recommendations.
1.04 WARRANTY
The 40QA unit is covered by a 1--year parts limited warranty.
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, and ceiling mounting brackets.
B. Unit Cabinet:
1. Unit cabinet shall be zinc--coated bonderized steel finished
with a baked enamel paint.
2. Inlet grilles shall be attractively styled, high impact
polystyrene.
3. Matching mounting brackets shall be provided.
C. Fans:
1. Indoor fans shall be 3--speed centrifugal blower type with
air intake in the bottom rear of the unit and discharge in the
front.
2. Automatic, motor--driven horizontal air sweep shall be
provided standard.
D. Coils:
1. Indoor coils shall be copper tube with aluminum fins and
galvanized steel tube sheets.
2. Fins shall be bonded to the tubes by mechanical expansion.
3. A drip pan under the coil shall have a drain connection for
the hose attachment to remove condensate.
NOTE: Units use a TXV refrigerant metering device in the indoor
unit for cooling only. Heat pumps use the Accurator piston
refrigerant metering devise in the indoor unit for cooling (except
for size 060 which uses a TXV) and an Accurator in the liquid
service valve for heating.
E. Motors:
Motors shall be a permanently lubricated ball bearing with inherent
overload protection.
F. Controls:
User interface with the unit shall be accomplished via a wired
thermostat that shall have the following functions as a minimum:
1. Automatic restart after power failure at the same operating
conditions as at failure.
2. Thermostat control to enter set points and operating
conditions.
3. Programmable fan speed control shall be user--selectable:
high, medium, low, or automatic operation during all
operating modes.
4. Automatic heating--to--cooling changeover to provide
automatic heating and cooling operation. Control shall
include dead--band to prevent rapid mode cycling.
NOTE: See selected thermostat instructions for further
information.
G. Filters:
Unit shall have filter track with factory supplied, cleanable filter.
H. Electric Heat
The 40QAQ units shall have a factory installed electric heater with
capacity listed in the schedule. The electric heater, when required,
shall supplement the heating capacity generated by the heat pump
system.
I. Electrical Requirements:
1. Unit shall operate on single--phase, 60 cycle power at
208/230v as specified on the equipment schedule.
2. Unit electrical power shall be a single point connection.
3. Unit control voltage shall be 24--v. All power and control
wiring shall be installed per NEC and all local building
codes.
4. Unit shall have low--voltage terminal block connections.
J. Special Features (Field Installed):
1. Internal Condensate Pump
: The condensate pump shall
remove condensate from the drain pan when gravity
drainage cannot be used. The lift capability of the
condensate pump shall be direct vertical 20 inches (508
mm). Float control shall be in the condensate sump to shut
the unit down in case of a pump malfunction.
2. Fresh Air Intake kit
: The fresh air intake kit shall include
the filter and duct connections to provide for outdoor
ventilation air.
3. Power Ventilation Kit
: The power ventilation kit shall be
used with the accessory fresh air kit when fresh air must be
ducted in. The kit will overcome duct static to provide a
constant supply of ventilation air. The kit consists of booster
fan and adjustable speed control to properly balance the fan
to achieve the required airflow rate.
4. 53DFS250--HW Thermostat
: The 53DFS250--HW
thermostat shall incorporate 3--speed control,
programmability, auto changeover, backlight, locking
keypad and a large LCD display.
Copyright 2012 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
C a t a l o g N o . 4 0 Q A C --- Q --- 2 P D
R e p l a c e s : 4 0 Q A C --- Q --- 1 P D
Printed in U.S.A. Edition Date: 04/12
40QAC/38HDR -- 40QAQ/38QR
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