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All installations must include the following items:
a.
1 pressure regulator, adjusted to 12 psi, must be installed
between the boiler and the main water supply in the building;
b.
1 expansion tank, pre-pressurized to 12 psi and of appropriate
size;
c.
1 or more automatic air purge valves;
d.
1 or more circulating pumps of appropriate capacity.
1.7)
INSTALLATION OF THE BOILER
At the time of installation, the following steps should be followed.
Refer to Figure 1 and 2.
1.
Choose an appropriate location. Mount the boiler securely on
the wall, with the help of the mounting plate. Ensure that it is
level and that the minimum clearances are observed;
2.
Install the drain valve and the safety valve as indicated in
Figure 1;
3.
An air vent can be installed on the unit. In such case, use the
½ " NPT to ? " NPT reducer, which is provided;
4.
Install the water supply and return piping with the 1" NPT fitting;
5.
The heating supply line must include:
a.
1 circulator along with 2 maintenance valves;
b.
1 automatic pressure reducing valve adjusted to 12 psi,
with a shut-off valve on the return water line;
c.
1 expansion tank;
d.
1 automatic vent.
6.
The flow of water through the system must be sufficient to
continuously discharge the energy generated by the boiler. If
not, the High Limit protector will disconnect all the electric
elements and a more or less frequent cycling mode will be
established by the Safety Control (see the Technical
Specifications Table);
7.
In order to ensure satisfactory water flow, the friction in the
piping system must not exceed the capacity of the circulator;
8.
After having completed all piping connections, run water
through the system and purge the air. The automatic vent
should be in operation.
Note:
Remove the panel on the right side of the unit and check
to see if the elements are watertight.
4
1.8)
ELECTRIC POWER SUPPLY
All electrical wiring must conform to the standards and regulations in
force and the Canadian Electrical Code CSA C22.1.
Electrical power to the boiler must come from a 120/240V 60 Hz,
single phase, 3-wire, grounded circuit, protected by an appropriately
sized breaker, based on the total rating of the boiler. Refer to the
boiler nameplate and the technical specifications in this manual to
select the proper breaker and wire size.
1.8.1)
CONNECTING THE CIRCULATING PUMP
The electronic circuit is designed such a way that the circulator
functions, based only on demand by the thermostat.
1.8.2)
CONNECTING THE THERMOSTAT
Note:
All wiring outside the control panel is 24V.
Single heating zone
Connect the low voltage thermostat to terminals TH and TH located
outside the control panel on the left side of the unit.
Multiple heating zones
Connect the contacts of the motorized valves or pump controls to
terminals TH and TH outside the control panel on the left side of the
unit.
The anticipator inside the thermostat must be adjusted according to
the electrical load connected to the thermostat.
1.8.3)
CONNECTING THE OUTDOOR SENSOR
Mount the sensor on an outside wall, protected from direct sunlight,
so that it will accurately measure the outside temperature. Install 2
only #20 wires between the outdoor sensor and the terminals
identified as S
and S
on the side of the boiler. If the sensor is
1
2
installed, it is necessary to move the modulation jumper from
terminal "M M" to "M" in order to facilitate the modulation of the
elements (see Section 2., Operation).
If the outdoor sensor is not installed, leave the jumper locked in the
"M" position.
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