Connecting The Power Supply Cable - Slant/Fin VSL-160B Installation Instructions Manual

8 - INSTALLATION - Electrical connections
Neutral
120Vac hot central heating
Figure 8-2 Electrical connections for 160-C model (Refere to Figure 7-6)
CAUTION!!!
Ensure that heating
and water piping is not used as
a ground connections for the
electric and telephone systems.
This piping is completely
unsuitable for this purpose and
could rapidly lead to serious
corrosion damage to the boiler,
piping and radiators, voiding the
warranty
CAUTION!!!
The boiler is not
provided with any protection
against lightening strikes.
8.1.1 - Connecting the
power supply cable
Provide and install a fused disconnect or
service switch (15 amp recommended)
as required by the code. To connect the
electrical power supply cable, follow the
steps below while referring to Figures 8-1
and 8-2:
Room thermostat
120Vac LINE (HOT)
NEUTRAL
GROUND
1. remove the boiler casing following the
instructions given in Section 14.2 and
open the junction box cover;
2. press the two plastic springs tabs
labeled "B" on the bottom side;
3. open panel "A" in the "C" direction;
4. remove the three screws labeled "D";
5. open door "E" in the "F" direction;
6. install the power supply wires, "G" as
shown;
7. strip the power supply wires being
careful to leave the ground wire 1in
(25 mm) longer than the other two;
8. connect the ground wire to the ground
terminal;
9. connect the 120 volt hot wire to
terminal "L1";
10. connect the 120 volt neutral wire to
terminal "N".
NOTICE! If the 120 volt power wires
are inverted, the boiler will block,
displaying error code E21.
NOTICE! If the boiler is not properly
grounded, the boiler will block,
displaying error code E23
Outdoor sensor (optional)
8.1.2 - Wiring the heating
pump for 160-B model
On 160-B model the heating pump is
not supplied with the boiler. Install the
heating pump following Section 7.2.4. If
the boiler is not connected to an indirect
water heater, wire the heating pump to
the boiler following the steps below while
refering to Figures 8-1 and 8-2:
1. remove the boiler casing according to
2. use a three wire cable with a minimum
3. route the circulator cable through an
4. connect the Hot and Neutral cable
5. connect the Ground wire to an empty
26
System pump (see
piping diagram of
Figure7-6)
the instructions given in section 14.2
and open the junction box cover;
cross section of # 14 AWG between
the boiler and the circulator pump;
empty cable clamp in the junction box;
wires respectively to the "4 and 5"
terminals in the junction box;
"Ground" connection inside the
junction box.