Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53400011-01
Printed in U.S.A.
Form 40W-3SI
Pg 1
6-15
Replaces: New
Installation Instructions
Part Number 40WA900011
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . . . 1
GENERAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1,2
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Piping to Indoor and Outdoor Units
. . . . . . . . . . . . . . . 2
• CONNECTING PIPING
Drain Piping
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• ROTATING DRAIN CONNECTION
SAFETY CONSIDERATIONS
Read and follow manufacturer instructions carefully. Fol-
low all local electrical codes during installation. All wiring
must conform to local and national electrical codes. Improper
wiring or installation may damage thermostat.
Understand the signal words — DANGER, WARNING,
and CAUTION. DANGER identifies the most serious hazards
which will result in severe personal injury or death.
WARNING signifies hazards that could result in personal
injury or death. CAUTION is used to identify unsafe practices,
which would result in minor personal injury or product and
property damage.
Recognize safety information. This is the safety-alert
symbol (
). When this symbol is displayed on the unit and in
instructions or manuals, be alert to the potential for personal
injury. Installing, starting up, and servicing equipment can be
hazardous due to system pressure, electrical components, and
equipment location.
GENERAL
The branch box accessory for the mini VRF (variable refrig-
erant flow) system allows the connection of multiple indoor
units to an outdoor unit. Each branch box allows 4 indoor unit
connections. The accessory is available for use with the mini
VRF (variable refrigerant flow) system units listed in Table 1.
See Fig. 1 for branch box dimensions. Figure 2 shows an ex-
ample installation.
Table 1 — Branch Box Accessory Usage
INDOOR UNIT
SIZES
40WAC Compact Cassette
007,009,012,015
40WAF 4-Way Cassette
009,012,015,018,024,030,048
40WAW High Wall
007,009,012,015,018,024
40WAD Ducted
007,009,012,015,018,024
40WAH High Static
024,030,036,048
40WAU Under Ceiling/Floor
012,018,024,030,036,048
40WAV Vertical
018,024,030,036,048
OUTDOOR UNIT
SIZES
38WAH
036,048
7
11
1
3
½
10
16
½
¼
a
40-1772
5
8
3
8
2
9
16
2
9
16
2
9
16
7
16
15
16
5
8
9
3
16
12
3
16
15
16
5
1
7
16
1
8
Fig. 1 — Branch Box Dimensions
NOTE: All dimensions shown
in inches.
40WAC,WAF,WAW,WAD,
WAH,WAU,WAV
Mini VRF (Variable Refrigerant Flow) System
Branch Box Accessory
