Slant/Fin VSL-160C Part A - Manuel (Page 27)

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Figure 8-3 Room thermostat location
CAUTION!!!
If the pump is larger
than 1 hp or 1 amps, you must
isolate with a relay.
6. Connect the electrical supply cable
to the electrical connections into
the pump. Follow manufacturer’s
instruction of the pump.
NOTICE! If the 120 volt power wires
are inverted, the boiler will lock-out,
displaying error code L05.
8.1.3 - Thermostat wiring
Install the room thermostat in a part of
the house where the temperature is as
near to average as possible. Avoid areas
subject to sudden temperature changes
such as outside windows or doors, above
radiation elements, near lamps, etc.,
(see Figure 8-3).
Connect the room thermostat to the
boiler by following the steps below:
1. remove the boiler casing according to
the instructions given in Section 14.2
and open the junction box cover;
2. use a two conductor cable with a
minimum cross section of #18 AWG
between the boiler and the room
thermostat;
3. route the cable through an empty
cable clamp “E” in the junction box;
4. connect the cable leads to the “9” and
“10” terminals as shown in Figure 8-2.
NOTICE! the maximum room thermostat
cable length permitted is 32 ft (10 m).
For longer lengths, up to 300ft (100 m) a
shielded cable, with the shield connected
to the ground, must be used.
WARNING!!!
Since the room
thermostat wires conduct 24 Vac,
they must never be run through
conduits containing 120Vac
power wires or an electrical
shock hazard will exist.
8.1.4 - Installing the
outdoor temperature
sensor (optional)
The outdoor temperature sensor is
supplied with the boiler. Install the
outdoor temperature sensor, on an
exterior wall of the building facing
NORTH or NORTH-EAST, at a height
of between 4 ft (1.2 m) and 6 ft (1.8 m)
from the ground level. On multi story
buildings, install the sensor near the
upper half of the second fl oor. Do not
install the sensor above doors, windows
or ventilation outlets nor directly under
balconies or gutter pipes. Do not shield
the outdoor temperature sensor. Do
not install the sensor on walls without
overhangs, or not protected from rain. To
connect the outdoor temperature sensor
to the boiler proceed as follows:
1. remove the boiler casing according to
the instructions given in Section 14.2
and open the junction box;
2. use a two conductor cable with a
minimum cross section of # 18 AWG
between the boiler and the outdoor
temperature sensor.
NOTICE! the maximum outdoor
temperature sensor cable length
permitted is 32 ft (10 m). For longer
lengths, up to 300 ft (100 m) a shielded
cable, with the shield connected to the
ground, must be used;
WARNING!!!
Since the
outdoor temperature sensor
wires conduct 24 Vac, they must
never be run through conduits
containing 120 Vac power wires
or an electrical shock hazard will
exist.
3. connect the outdoor temperature
sensor cable leads to terminals “13”
and “14” as shown in Figure 8-2;
4. connect the outdoor temperature
sensor cable leads to the ends of the
external temperature sensor.
Set the boiler so that it detects the
outdoor temperature sensor, as follows:
1. press down the button for
12 seconds until the display starts
blinking and shows ;
2. then press and release the
button several times until the following
parameter appears;
3. using the and keys,
change the parameter value from 00
to 01 or 02 in relation to the type of
climatic heat adjustment desired as
explained in Section 13.10;
4. press the button repeatedly
until exiting the menu; the display will
no longer fl ash.
8.1.5 - Alarm output
Inside the electrical box (see Figure 9-2)
there is an electrical connection for a
120Vac output that is energized each
time the boiler goes into a lock-out or
error condition. The Installer can use this
output to activate, indirectly, any kind
of external signal to devices such an
audible alarm, phone, or other devices.
6ft ( )
8 - INSTALLATION - Electrical connections