Carrier 40FS - Manual (Page 9)

Step 6 — Install Accessory Cooling Control Kit
on 208/230-volt cooling only applications. As in­
dicated on page 3, kit is not required on units
equipped with electric heater. Remove fan section
access panel; unpack and install control kit as
shown in Fig. 11 as follows;
1. Assemble left-hand and right-hand filler panels
using screws provided. Holes in filler panels are
provided to accommodate fan section width.
2. Cut supplied foam seal strip to fit filler panel
standing flange. Apply seal strip to back of
flange.
3. Secure cooling control box to right-hand filler
panel using screws “A” provided.
4. Remove screws “B” securing tie angle to fan
section. Remove tie angle; save screws.
5. Install filler panel/control box assembly on fan
section as shown. Secure, reusing screws “B”
plus screws provided (4 for top of panels to fan
deck; 2 for filler-to-side panels).
6. Route relay wires from control box thru wire
tie on fan assembly to fan speed selector block.
W.ARN'ING: Wires from heater must pass thru
wire tic to prevent wires from rubbing on sharp
7.
8 .
9.
To install control box cover (not shown),
secure to hole in right-hand filler panel using
screw provided.
Secure ductwork to fan section flanges (3) and
filler panel standing flange. Review ductwork
information discussed previously.
Install fan section access panel.
Fig. 11 — Fan Section 40FS; Interior Details
Step 7 — Install Accessory Humidity Control
Kit (for 230-v, 28TQ application). See Fig. 12.
Attach supplied bracket to rear of control box using
hole closest to strain relief. Place control box in
upper right-hand corner of 40FS fan section. Secure
control box by fastening bracket supplied to support
bracket of fan section.
Fig. 12 — Humidity Control Kit Installation
(28TQ Applications Only)
ELECTRICAL DATA AND WIRING
Field wiring must comply with local and national
fire, safety and electrical codes. Voltage to
unit must be within ± 10% of voltage indicated on
nameplate (voltage range at which the units will
operate satisfactorily for limited periods of time).
Contact local power company for correction of
improper line voltage.
Operation of unit on improper line \oltagc
constitutes abuse and is not covered by Carrier
Warranty.
See Tables 4 and 5 for recommended wire and
fuse sizes.
Step 8 — Install a Branch Circuit Disconnect
Switch(es) per NEC. One disconnect switch is
required on all unit assemblies except those
which include 40FS916320 (11- to 20-kw) electric
heaters. Standard assemblies using these heaters
require 2 disconnect switches for 2 line power
circuits. If one line power circuit, using one dis­
connect, is required, attach an accessory line power
connection conversion lug set (Lug Adapter Kit —
Part No. 40FS900271) to fuse terminals in electric
heater. Installation may be aided by first attaching
adapter lugs to wire then positioning lugs to fuse
block. See Fig. 13C.
Locate disconnect(s) within sight from and readily
accessible from the unit, per section 440-14 of
National Electrical Code (NEC).
Step 9 — Route Line Power Leads Into Unit —
Extend leads from disconnect per NEC thru hole
provided (Fig. 1) into cooling control kit or acces­
sory electric heater. (Cooling control kit not
required when heater is used.)
Step 10 — Connect Ground Lead(s) to the
Ground Screw in Cooling Control Kit or
Grounding Lug in Electric Heater Control
Section for safety. Connect power wiring. Fig. 13.
Splice power leads to pigtails in cooling control kit
or connect leads to fuse terminals or terminal board
on electric heater.
When using control kit, splice a power lead to
black transformer pigtail on 230-volt units or red
transformer pigtail on 208-volt units. Cap unused
transformer pigtail.
When using an electric heater on 230-volts,
connect the red transformer pigtail to heater hne
voltage terminal. When using heater on 208-volts,