A few words about your new carrier unit, Some suggestions, Before you start – Carrier 51QC/QG User Manual
Page 3: A few words about your new unit
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".

A FEW WORDS ABOUT YOUR 
NEW CARRIER UNIT...
Thank you for choosing Carrier! You can feel confident
in your selection because the same pride in craftsman
ship and engineering knowledge that goes into Carrier 
equipment at the Astrodome in Texas, the famous Sis- 
tine Chapel in Rome, the United States Capitol’s Halls of 
Congress and thousands of other installations world
wide has gone into construction of your unit.
One of the principal advantages to owning a Carrier
room air conditioner heat pump is that the unit heats
AND cools, so it can be used year-round! While cooling.
your new Carrier unit also filters and dehumidifies. In 
cold weather, the unit gently heats and circulates air 
through the room. Carrier’s room air conditioner heat 
pump units quietly give you maximum comfort!
This manual will supply you with all the information
you need for installing, operating and maintaining your
new unit. Take a few moments to read and discover how 
to get the most in comfort and economic operation from 
your new Carrier room unit!
SOME SUGGESTIONS...
A)
To avoid installation difficulties, read instructions
thoroughly before starting. This publication contains
information pertinent to the installation and operation of
the 51 QC/QG Room Air Conditioner Heat Pump.
B)
The 51 QC/QG is normally installed through a wall.
During installation, you will be moving unit’s chassis from
the cabinet casing, installing the casing first and then
re-inserting the chassis. CAUTIQN; CQIL FINS QN
CHASSIS ARE SHARP AND CHASSIS IS HEAVY.
NOTE: This unit may also be installed in a window. An 
additional accessory kit must be ordered separately for 
window mounting. Contact an authorized Carrier Dealer, 
or call 1-800-CARRIER for information.
C)
When possible, install unit on a shaded side of the
house or building.
D)
Make sure that wall mounting area (or window, if
window-installation is chosen) is structurally sound 
enough to support the unit.
BEFORE YOU START
Use the following guide to insure that you have selected 
the air conditioning unit that wiil properly cool the space 
you desire This guide is developed for normal room 
insulation, number of windows, and sun exposure, with 
two people occupying the conditioned space
Adjust the room air conditioner capacity found in 
the table for the following conditions
1, Reduce capacity by 10% for heavily shaded
areas.
2
Increase capacity by 10% for very sunny
areas
3 Add 600 Btu/h for each additional person
(more than two people)
4 Add 4,000 Bfu/h if area to be cooled is a
kitchen.
Area To Be Cooled
Square Feet
(Width, Ft. X Length, Ft.)
100-150 
150-250 
250-300 
300-350 
350-400 
400-450 
450-550 
550-700 
700-1,000
1
,
000
-
1,200
1,200-1,400 
1,400-1,500 
1,500-2,000 
2,000-2,500
Approximate Nominal
Cooling Capacity
Btu/h
5.000
6.000
7.000
8.000
9,000
10,000
12,000
14.000
18.000
21,000
23.000
24.000
30.000
34.000
A
