How To Set Up Resistance Of The End Terminal; Indoor Side (Automatic Setup) - Toshiba Super MMU-AP0091H Service Manual

8. How to set up resistance of the end terminal

When all the address setups have finished in the same refriger-
ant circuit system, put the resistance of the end terminals in the
same central control line into one.
• Remain only SW03-2 of the header outdoor unit with the least
circuit system address number as it is ON.
(With end terminal resistance)
• Set up SW03-2 of the other header outdoor units to OFF.
(Without end terminal resistance)
9. Connect the relay connector between [U1U2] and [U3U4] of the
header unit for each refrigerant line.
10. Then set up the central control address.
(For the central control address setup, refer to the Installation manual of the central control devices.)
Before address setup
During setup of address
Relay
After address setup
connector
Outdoor interface
P.C. board
SW13, 14
(Line address)
SW30-2
Terminal-end resistance
of indoor/outdoor communi
cation line/central control
communication line
Connect short
Relay connector
address setup

Indoor side (Automatic setup)

Line address
Indoor unit address
Group address
Never connect a relay connector until address setup for all the refrigerant lines finishes;
otherwise address cannot be correctly set up.
1
Header
unit Follower unit
U3 U4 U3 U4
U1 U2 U5 U6 U1 U2 U5 U6
connector
U1 U2 U1 U2
A B A B
Remote Remote
controller controller
Individual
Header
unit Follower unit
U3 U4 U3 U4
1 2 1 2
ON ON
SW30 SW30
OFF OFF
U1 U2 U5 U6 U1 U2 U5 U6
connector
U1 U2 U1 U2
A B A B
Remote Remote
controller controller
Individual
Header unit Follower unit
(Setup is
1
unnecessary.)
(Setup is
ON
unnecessary.)
after Open
1 1
1 2
0 0
Relay connector
2
Header unit Follower unit
U3 U4 U3 U4
U1 U2 U5 U6 U1 U2 U5 U6
Relay
U1 U2 U1 U2
A B A B
Remote
controller
Group
Header unit Follower unit
U3 U4 U3 U4
1 2
ON
SW30 SW30
OFF
U1 U2 U5 U6 U1 U2 U5 U6
Relay
U1 U2 U1 U2
A B A B
Remote
controller
Group
Header unit Follower unit
(Setup is
2
unnecessary.)
OFF after (Setup is
address setup unnecessary.)
Connect short
after Open
address setup
2 2
1 2
1 2
Point
— NOTE —
96
Header unit interface P.C. board
ON
1
SW30
ON ON ON
1 2 3 4 1 2 3 4 1 2 3 4
SW11 SW12 SW13
ON ON ON ON
1 2 3 4 1 2 3 4 1 1
SW06 SW07 SW08 SW09
3
Header unit
U3 U4
U1 U2 U5 U6
Relay
connector
U1 U2
A B
Remote
controller
Header unit
U3 U4
1 2 1 2
ON ON
SW30
OFF OFF
U1 U2 U5 U6
Relay
connector
U1 U2
A B
Remote
controller
Setup at shipment
Header unit
3
OFF after
address setup
Connect short
after
address setup
3
1
0
2
SW30
ON
1 2 3 4
SW14
ON
2 3 4 1 2 3 4
SW10
from factory
1
ON
Open