Rinnai Q130SN - Manuel (Page 42)

Installation & Servicing Instructions Rinnai Q-Series
42
8 Electrical connections
The electrical connections to the boiler must be made in accordance with all applicable
local codes and the latest revision of the National Electrical Code, ANSI/NFPA-70.
Installations should also conform with CSA C22.1 Canadian Electrical Code Part 1
if installed in Canada.
Devices such as, outdoor sensor, room thermostat or temperature control, 3-way
valve (except Q175CN/Q175CP), temperature sensor or thermostat and an external
pump are all connected to the internal connection terminal. The connection terminal
is situated in the Control Tower.
Connecting incoming power
Lead the cable through the back part of the boiler using a strain relief and lead the
cable through the cable supports to the Control Tower.
Connect a power supply cable to the cable harness terminal strip that connects to
both the power switch on the front of the Control Tower and the terminal strip with
positions 1,2, and 3 on the inside of the Cotnrol Tower.
The boiler must be electrically grounded in accordance with local codes, or
in absence of local codes, with the National Electrical Code, ANSI/INFPA 70
and/or the CSA C22.1, Electrical Code.
RISK OF ELECTRIC SHOCK.
Once the main power supply is on then there is 120V on terminals 1 to 12 if the main
switch at the front of the Control Tower is switched on.
- No changes may be made to the wiring of the boiler.
- All connections should be designed in accordance with the applicable
regulations.
- Label all wires prior to disconnection when servicing controls. Wiring errors
can cause improper and dangerous operation.
- Verify proper operation after operation servicing.
The Rinnai room thermostat and controls must be connected to their allocated
connections. All other types or makes of room thermostats or controls which
are used must have a Volt free contact.
When using an on/off thermostat or control, it is possible that an anticipating resistance
must be calibrated in order to prevent too high temperature fluctuations. As a standard
rule this means mercury thermostats. This resistance wire is present in the Control
Tower and must be connected to clamps 23 and 27. The anticipating resistance in
the room thermostat has to be set at 0.11 A.
For more detailed questions regarding the components which are not supplied, the
distributor should be contacted.
Connection terminal Q-Series
Connection terminal figure 21
120 V
olts for
external pump main power supply 120 V
olts for
external control 120 V
olts
internal or external three-way valve motor and tank sensor Bus room thermostat On/of
f thermostat or
control (V
olt free)
AR
V12 outdoor
sensor External safety contact 24 V
olts
maximum 100 mA
CAUTION
CAUTION
CAUTION
Make sure that the power consumption of each of the terminals
4-5-6, 7-8-9 and10-11 does not exceed 230W or 2 Amp. ! CAUTION
NOTICE
i
CAUTION
! CAUTION