11
S
TARTING UP THE
F
URNACE
Make sure all the valves on the back of the furnace are closed and that the power is off.
Begin filling the furnace with water. Turn the manual fill valve on the front of the furnace to
allow water to flow into the furnace tank. You can work on other things while it is filling. Once
the water starts to flow out of the over flow, shut off the water with the manual fill valve.
Double check that all the fittings and connections throughout the system have been tightened
or secured. Then open the valve going to the pump and from the furnace. If you have a way
to bleed the air out of the system then open the bleed valve and turn the power on.
(With a
normal set up, the pump coming out of an upper port and returning to a lower port, all you have to do is
open the ball valve on the top side of the pump and then open the drain valve on the lower port. The
pump has enough pressure to push air out of the lines, however, if you get water in the return lines prior
to pumping water from the furnace your line will become air locked and that will require special help
from another water source to fix.)
Once the pump has started pushing water through the lines, check the various connections
throughout the system to verify they are all good and you have no leaks. After the system has
been purged of air, close the bleeder valve and open the ball valve to the furnace on the
return port.
Now it is time to start a fire. It is recommended that you check all the lines prior to starting a
fire in case you have a problem that needs to be repaired. It is easier to repair the lines while
they are cold than when you have hot water flowing through them. When first starting up the
furnace, build a manageable fire to get the water up to temperature. Once the water has
gotten to your desired temperature setting then you can fill it full of wood and start a normal
operation. Water will come out of the overflow as it expands.
M
AINTENANCE
The front wood door has two “U” bolts that are adjustable. If you feel the door is not closing
tightly or may be too tight, loosen the bolts with the door open and tighten or loosen the bolts
as necessary.
It is important that the water is checked daily, especially after the first start up. We also
require that you have your water tested to maintain proper ph and necessary chemicals for
your water conditions. At the end of the season it is important to have all necessary chemical
in the water if you will be leaving the furnace full of water over the summer. Earth will pay for
the water test for the 1
st
3 years of ownership.
You should clean your ashes out at least once a week. A flat shovel works well for this job.
We recommend using a metal container of some kind to put the ashes in when removing
them. At the end of the season, be sure to completely clean the ash box. Ashes combined
with moisture are very corrosive and can eat through metal. Ash or coal corrosion is NOT
covered under warranty.
The ash grate inside the furnace is removable for cleaning purposes however it is very heavy.
Use caution when taking it out.
Your chimney is a 5” heavy wall rolled steel that sticks straight down into the fire box. Do not
worry about hitting it with wood. It should be cleaned about once a month. A 5” round
chimney brush will work for this job. You may use a chimney cap with the furnace to keep
Summary of Contents for Bear Cub 305 Series
Page 1: ...Bear Cub 305 Series ...
