2 Relay Boxes, 2 Keypads, and 2 Printers
Tunnel Master® Jr. Controller Equipment Layout & Addressing
2 Relay Boxes, 2 Entry Keypads, Report/Receipt Printer
Relay Box/
Controller
Relay Box
Equipment Room
Equipment Room
1. Relay Box power
1. Relay Box powered by
supplied by dedicated
dedicated 120 VAC circuit
120 VAC circuit.
from 1st Relay Box.
2. Supply separate 24 VAC
2. Loop separate 24 VAC and
and 120 VAC power to
120 VAC circuits in 1st Relay
Box to common (C) in 2nd
common (C) of side of
upper and lower
Relay Box.
termination points on
3. Relay Address set to 9
each relay respectively.
in wash settings.
B
A
A
to
120 VAC
Conduit A
A dedicated 120 VAC circuit shall be run with
14/3 copper shielded wire with an insulation
rating of 300v through a listed 3/4" conduit to the
1st Relay Box/Controller and on to the 2nd Relay
box and secured with listed circuit hubs.
Figure 9-3. 2 Relay Boxes, 2 Keypads, and 2 Printers
Page 65 -
Tunnel Master® Jr. User Manual
(See System Installation Guide for wiring instructions)
2nd
Report
Printer
Next to Relay Box
1. Report printer power
to 120 VAC outlet on
same dedicated
120 VAC circuit as
Relay Box.
2. Communication
from Relay Box.
3. Report Address set to
2. (Can be set to 0 if
attached to primary
relay box or same
address as Keypad if it is
attached to a Keypad.)
Conduit B
A 3/4" listed conduit shall be run between the
1st and 2nd Relay Box and must be secured with
listed circuit hubs. This conduit will contain
communication wire.
1st Entry
2nd Entry
Keypad
Keypad
Wash Entrance
Wash Entrance
1. Keypad power
1. Keypad power
supplied by 24 VAC
supplied by 24 VAC
from Relay Box.
from Relay Box.
2. Communication
2. Communication
cable from
cable from
Relay Box.
Relay Box.
3. Keypad Address
3. Keypad Address
set to 5.
set to 6.
to 120 VAC outlet
C
C
A 3/4" listed conduit shall be run from the 2nd Relay Box
to the 1st Keypad and on the 2nd Keypad and must be
secured with listed circuit hubs. This conduit will contain
communication wire and three 18 gauge conductors for
24 VAC power. Both should have an insulation rating of 300v.
Receipt
Printer
Wash Entrance
1. Receipt printer power
to 120 VAC outlet on
same dedicated
120 VAC circuit
as Relay Box.
2. Communication
from Keypad.
3. Receipt Address
set to same address
as Keypad it is
attached to, in this
example 6.
to
120 VAC
outlet
Conduit C
Appendix
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