Service manual

13
www.monitorproducts.com
INSTALLATION - START UP AND OPERATION
1) Junction box
2) Main Power Pigtail Leads
3) Unit Upper Back Panel
4) Control circuit Pigtail Leads
8 - FUEL OIL SUPPLY CONNECTIONS
The buner supplied with the unit is connected to the heating
system. Lines are terminated with 3/8-inch reverse flare fittings
for connection of the supply from the fuel oil tank. When
connecting the line, a 10-micron spinon type oil filter must be
installed in the oil supply line to minimize burner contamination.
UPPER LEFT REAR CORNER OF UNIT (Facing rear of
unit)
Fig. 41
There are three 7/8" holes in the right rear of the unit. Mount a
Listed 2 x 4 inch, “HandiBox” type junction box vertically over
the lower left hole (facing the rear of the unit) in such manner
that the lower right hole is open. When installing the junction
box, center the box vertically over the hole by using the center
knockout in the box. Install a 1/2-inch trade size cable
connector or insulating bushing through the hole in the unit
and through the knockout in the box. Secure the box with
screws as required.
Route the factory supplied main power pigtail leads through
the connector into the junction box from inside the unit and
secure the connector clamp on the wires. Install a second
cable or conduit connector in another knockout in the box for
the power wiring system as required. Connect the power wires
and grounding conductors to the pigtail leads in the box using
Listed wire connectors and install a cover.
Route the factory supplied control circuit pigtail leads through
the lower right hole from inside the unit. Connect the room
thermostat wires to the con-circuit pigtail leads using a suitable
Class 2 wiring connection method.
III. START UP AND OPERATION
1 - PRE-START FINAL SYSTEM CHECK
Before starting normal operation of the heating system, perform
the following final installation procedures:
• Leak-check the flue/combustion air system to minimize the
likelihood of leakage.
• Leak-check the entire water system, repairing any leaks
that may be found.
• Fill the entire water system with water, treated as desired
for the application, including anti-freeze solution if
appropriate. Open any shut-off valves in the system
• Fill the condensate drain trap with water
• Leak-check the fuel oil supply system and open any fuel
shut-off valves.
• Recheck the power and control circuit connections THEN
replace all cabinet access panels
• Energize the electrical power circuit to the unit.
2 - START-UP AND OPERATION
After completing the pre-start final system checks, the system
can be started and run through start-up checks and
adjustments as required.
1) Start/Stop Switch
2) Summer/Winter Switch
Circulator control inside the heating system
3) Heating System Temperature Control Thermostat
Heating System Temperature adjusted between 140 - 176
deg. F (60 - 80C)
4) Water Outlet Temperature Thermometer (Circuit 1)
5) Water Overheating Safety Thermostat
Burner Cutout
6) Combustion Product Overheating Safety Thermostat
Heating System Shutdown
7) Burner Safety Device Light
8) Slot for Additional Control
Note: overheat thermostats may not physically pop up if
tripped. Press the red center with a pointy object such
as a pen and listen for an audible click.
Fig. 42