Carrier 50HQ - Manual (Page 2)

f. 50HQ units include a'sus'pehsion package for
ceiling installation. To attach hanging brackets,
install 4 bolts (5 /16 - 18-3/8 in. Ig) thru bracket
into the 4 weld nuts located on bottom of unit.
Insert the threaded rod thru rubber grommet,
located in hanging bracket, and attach with flat
washer and double nut. See Fig. 3.
Step 2 — Connect Supply Ductwork — Supply
air duct flange is shipped inside unit. Remove flange
from shipping location and install on unit supply
air opening. Connect supply air ductwork to unit
supply air duct connection flange. Refer to Fig. 1
and 2 and Table 1 and 2 for connection size and
location. If necessary, refer to Carrier System
Design Manual, Part 2, for system air duct design.
When E-e'dignihg and installing ductwork, consider
tfie following:
a. Size duct for 350 to 450 cfm per ton of cooling
capacity.
b. Avoid abrupt duct size increases and reductions.
c. Use flexible connectors between ductwork and
unit to prevent transmission of vibration.
d. Ducts passing thru an unconditioned space must
be insulated and covered with vapor barrier in
accordance with the latest issue of SMACNA
(Sheet Metal and Air Conditioning Contractor’s
National Association) and NESCA (National
Environmental Systems Contractor’s Associa­
tion) minimum installation standards for resi­
dential heating and air conditioning systems.
^ Table 1 — Installation Data — 50VQ (See Fig. 1.)
MODEL 50VQ 014 018 022 027 033 042 048 060 080
OPER WT (lb)
_5
240“^ 260 270 290 320 320 350 380
DIMENSIONS (ft-in.)
A 1-9-3/16 2-5-3/8
B 1-9-3/16 2-3
C 3-2-5/16 4-0
D 0-5-7/8 0-8
E 0-1-3/16 0-6-13/16 0-5-1/2 0-6-1/16
SUPPLY DUCT CONN.
(ft-in.) F 0-9-7/16 1-4
G 1-1-3/8 0-10-1/2 1-1-1/16 1-0
FILTER (1) Replaceable Media
Size (in.) 21 X 21 38 X 22
Return Air
Fig. 1 — Dimensions and Connections — 50VQ