Rinnai RS100 Operating And Installation Instructions

Control system

For the heating specialist
Operating and installation instructions

Room control unit RS100

Rinnai

2

Contents

General safety instructions...........................................................3

Safety measures for electric - compliant installation .................3

Installation of the room control unit............................................. 5

Mounting location .................................................................................................5

Mounting instructions ...........................................................................................5

Electrical connection ............................................................................................6

Electrical connection at boiler...............................................................................6

Accessories ....................................................................................7

Outdoor sensor ....................................................................................................7

Resistance values of outside sensor.....................................................................7

Co m m i s s i o n i n g o f t h e ro o m c on tr o l u n it.........................................8

Language .............................................................................................................8

Code input............................................................................................................8

Site information..........................................................................10

Parameter synoptic......................................................................11

Overview of installer parameters and adjustment options.................................12

3

General safety instructions

All electrical connections and safety
measures have to be carried out by a
specialist in due consideration of valid
standards as well as the local regulations.

The electrical connection has to be done
according to the specications of the
respective boiler manufacturer.

Safety measures for electrical­compliant installation

1. Cables with 120 V voltage must be
generally routed separately from
sensor lines and data bus cables.
A minimum distance of 0.8 in (2 cm) between
the lines is mandatory. Crossing of lines is
permitted.

2. When installing the room control unit a
minimum distance of 15.75 in (40 cm)
must be maintained to other electrical
utilities with electromagnetic emissions,
such as power contactors, motors,
transformers, dimmer switches,
microwave ovens and televisions,
loudspeakers, computers, mobile
phones etc.

3.

15.75 in
40 cm

Fig. 2: Minimum distance to oth er elec tric

instruments

Only connect heating
room lighting and
sockets on separate
power circuit!

Room control
unit

Control unit 16 A

Heating room emergency
switch

Boiler

Fig. 3: Electric routing in heating room

Fig. 1: Min im um di stanc es for e le ctric al c onn ecti on

5.9 in
15 cm

Mains 120 V~

Data bus line 12 V~

0.8 in
2 cm

WARNING

Indicates an imminently
hazardous situation
which, if not avoided,
could result in death or
serious injury.

WARNING

Disconnect power before opening. Making
connections under voltage may damage the
control or cause dangerous electrical shocks.
120 volts is supplied to the control.

The main connection for the heating
system (i.e. boiler - control unit) must be
designed as an independent electrical
circuit. Do not connect uorescent lamps
or other electrically powered devices which
could be a source of electrical interference.
Even the possibility of such
connections/interference should be ruled
out.

4

4. It is suggested to use a shielded cable
for all installations.

5. The shielding of the cable has to be
connected with earth potential, i.e.
boiler covering, connecting terminals ­for earth potential etc. Multiple
grounding is not permitted (humming
loop).

In star shaped networks it is not
permitted to ground cables on both
sides. They should be grounded in the
center.

6. The outside sensor may not be
installed close to transmitting or
receiving equipment (on garage walls
close to receivers for radio-controlled
garage door openers, amateur radio
antennas, radio controlled alert
systems or close to large scale radio
transmission equipment).

Recommended cable cross-sections
and maximum permitted cable lengths:

A – Sensor lines

For all low voltage cables such as
sensors, external selectors, bus and
analogue in- and outputs, heat requiring
by means of external contact, modem
connection cables, etc.: 0.0008 in (0.5 mm )

2

Maximum permitted cable length: 164 ft
(50 m).
Longer connecting cables should be
avoided in order to reduce the risk of
electrical interference.

B – Data bus lines

Recommended cable:
J-Y(St)Y 2 x 0.0009 in (0.6 mm )

2

Maximum permitted cable length: 164 ft
(50m)

Longer connecting cables should be
avoided in order to reduce the risk of
electrical interference.

Fig. 5: Grounding in star shaped networks

Screen

2-wire

data bus line

Distribution
terminal

Distribution box

Do not ground here!

Fig. 4: Screen grounded in centr e

Boiler control in
boiler control unit

Connection,
depending on version,
directly or via suitable
interface

2

2

(18 AWG)

(18 AWG)

5

Installation of the room control
unit

Mounting location

a – for applications without room sensor

If the internal room sensor is not to be
activated the unit may be mounted at
any location indoors.

b – for applications with room sensor

The activated room sensor should be
xed at a height of approx. 4-5 ft (1.2-1.5 m)
at a place most representative of all
rooms. It is recommended to choose a
partition wall in the coolest day room. In
order to ensure sucient air circulation
at the room station, it must be mounted
to the wall with a gap in between.

The unit must not be mounted:

– at locations subjected to direct solar

radiation (consider the position of the
sun during winter).

– close to heat-generating appliances,

such as televisions, refrigerators, wall
lamps, radiators etc.

– on walls with heating or domestic hot

water pipes or chimneys behind.

– on non-insulated outside walls
– in corners or wall recesses, shelves or

behind curtains (insucient ventilation)

– close to doors of unheated rooms

(inuence of low temperatures)

– on unsealed ush-type boxes

(inuence of external low temperatures
due to the chimney eect of installation
tubes)

– in rooms with radiators controlled by

thermostatic valves (mutual inuence).

Mounting instructions

After removing the front panel by pressing
the locating lug the wall mounting base
can be taken o and mounted at the
desired location using the enclosed dowel
pins and screws. The data bus line must
thereby be routed through the bottom
cable gland.

Recommended connecting cable:

J-Y(ST)Y 2 x 0.0009 in (0.6 mm ) (18 AWG /
2 conductor twisted pair shielded cable)

2

(2 wires not in use).
Maximum cable length: 328 ft (100 m)

Note:

For new installations, a ush-mounting
switch box is recommended to ensure
perfect routing of the cable.

 Locking lug

2