Flue Gas Sampling; Lighting And Furnace Shutdown - Nordyne M1GH 056 Installation Instructions And Owner's Manuals

Fuel Line Hook-Up: One Line System
The one line system is highly recommended where vertical lift,
from bottom of tank to pump, is not more than eight feet. A
single line hookup has the advantage of costing less and
giving quieter operation.
If a two pipe system is used or if oil is taken from the bottom
of the tank, a filter is recommended.
Fuel Line Hook-Up: Two Line System
Use a two line system only if the vertical lift exceeds 8 feet.
1. Install the oil feed line as outlined in steps 1-6 below.
2. Install the oil pump bypass plug in the bottom return port.
3. Run the return line up through the furnace base to the
return port of the pump. Run the other end of the line to the
tank, using 3/8" O.D. copper tubing or 1/4" pipe with the
ends capped, and routing the line so it stays clean.
4. Insert the return line through the second opening in the
duplex bushing. If the bottom of the tank is lower than the
pump intake, the tube should be inserted three or four
inches from the tank bottom. If the bottom of the tank is
higher than the pump intake, the return line should extend
not more than 8" inside the tank.
Hook-Up Procedure (See Figure 27)
1. Use a 3/8" O.D. copper tubing for the fuel line. Cap the end
with tape to keep out dirt while the line is being routed.
2. Install duplex bushing for two 3/8" lines in the top fitting of
the tank.
3. Insert one end of the tubing through the duplex bushing
until it is three to five inches from the bottom drain. Tighten
the bushing.
4. Run the line where it will not be subject to damage. Also,
make bends gradually and avoid kinks which might restrict
oil flow.
5. Open the furnace door. Connect the oil line to the intake
port on the pump. Tighten other port plugs on the pump.
6. Be sure oil line is airtight! Air leaks can cause the pump
to lose prime and will create other problems such as
nozzle failure, odors, rumbling noise, and false safety
shutdown.
7. Insert the short length of the copper tube level with the
bottom of the duplex bushing. Form the tube into an
inverted "U" to serve as a vent.
How to Eliminate Air Leaks
To eliminate problems caused by air in the oil line, all
connections in the oil supply line and all plugs, nuts, and
fittings on the pump must be airtight. This includes the nut that
covers the pressure adjustment. It is important that the hook-
up be done carefully and with a good flaring tool.
Fuel Oil Type
Do not use fuel oil heavier than Grade No. 2. Grade No. 1 may
be used where the oil supply is subject to low temperatures.
DO NOT USE GASOLINE, CRANKCASE OIL, OR ANY OIL
CONTAINING GASOLINE.
14
! WARNING:
Failure to keep supply of oil clean by various
procedures described above may cause failure
of certain components such as the fuel pump
gears, check valve, shaft seal, or burner nozzle
which may result in a burner fire.

15. FLUE GAS SAMPLING

It may be necessary to take flue gas sampling from oil and gas
gun furnaces (M1S and M1B Series Models) in order to check
the performance after furnace installation. A flue gas sample
may be taken from the heat exchanger, which is located
behind the hole of the top-front of blower compartment.
1. STOP! Read the SAFETY INFORMATION.
2. Turn off all electric power to the appliance.
3. Remove the black plastic cap located above the blower
and save.
4. Through the top of the blower compartment hole, drill a
hole for your sampling tube into the heat exchanger.
5. Insert sampling tube through the drilled hole.
6. After a complete check and adjustment of furnace
performance, fill the drilled hole with a screw that is larger
than the hole.
7. Put silicon sealant (rated at least 500° F) around the
screw.
8. Plug the outside hole with the plastic cap you removed in
step 3.
WARNING:
!
If you do not follow these instructions exactly, a
fire or explosion may result causing personal
injury, loss of life, or property damage.

16. LIGHTING AND FURNACE SHUTDOWN

GENERAL-ALL MODELS
Read the safety information on the front page of these
installation instructions before lighting furnace. DO NOT
ATTEMPT TO LIGHT FURNACE IF YOU SMELL GAS.
SAFETY INFORMATION
FOR YOUR SAFETY READ BEFORE LIGHTING.
a. The first lighting of the furnace after any home
setup must be performed by a qualified service
technician.
b. If this appliance has a pilot that must be lit by hand,
follow these instructions exactly.
c. BEFORE LIGHTING smell all around the furnace for
gas. Be sure to smell next to the floor because some
gas is heavier than air and will settle on the floor.