International comfort products N9MP1 User Manual page 7

Typical Gas Valve Honeywell
Figure 4
Single Stage (90+ Furnaces)
Pilot Pressure
OUTLET
Adjustment
(Hidden)
On\Off
Switch
Diagnostic Light
Two Stage
OUTLET
Typical Gas Valve Honeywell 80+ Furnaces
Manifold Adjustment
(Hidden)
On/Off
Switch
INLET
441 02 2001 06
Furnaces
INLET
Manifold Pressure
Adjustment
dwg 25--23--31a
Manifold Pressure
Adjustment
LO
HI
INLET
25--22--49a
Diagnostic
Light
(on some models)
Pilot Adjustment
(Hidden) on some
models
OUTLET
25--22--25a
User's Information Manual
L P Model Units
If your L.P. (liquefied petroleum) gas unit is installed in an exca-
vated or low lying area, we recommend that you contact your L.P.
supplier about installing a warning device that would alert you of a
gas leak.
!
Fire or explosion hazard.
L.P. gas is heavier than air. Leaking gas can settle
in low areas such as a crawl space. If you suspect
the presence of gas, follow the instructions on the
cover of this manual.
Failure to observe could result in death, bodily in-
jury or property damage.
Freezing Temperatures And Your Structure
!
Freeze warning.
Turn off water system.
If your unit remains shut off during cold weather
the water pipes could freeze and burst, resulting
in serious water damage.
Your unit is equipped with safety devices that may keep it from op-
erating if sensors detect abnormal conditions such as clogged ex-
haust flues.
If your unit remains shut off during cold weather the water pipes
could freeze and burst, resulting in serious water damage.
If the structure will be unattended during cold weather you should
take these precautions.
1. Turn off main supply water into the structure and drain the
water lines if possible. Open faucets in appropriate areas.
2. Have someone check the structure frequently during cold
weather to make sure it is warm enough to prevent pipes
from freezing. Suggest they call qualified service agency, if
required.
Winter Shutdown (90+ Furnaces)
If you go away during the winter months and do not leave the heat
on in your home, the plastic transition box and the condensate trap
on the furnace must be protected from freeze damage. (See Fig-
ure 2)
²
5
1. Disconnect the / OD rubber hose from the vent drain fit-
8
ting that is located downstream of the combustion blower.
Insert a funnel into the hose and pour four(4) ounces of sani-
tary type (RV) antifreeze into the condensate trap. Recon-
²
5
nect the / OD rubber hose to the stub on the vent drain
8
fitting. Secure with the hose clamp.
²
3
2. Disconnect the / OD rubber hose from the condensate
4
trap. Insert a funnel into the hose and and pour four(4)
ounces of sanitary type (RV) antifreeze into the plastic tran-
sition box. Squeeze the hose together near the end and
3
quickly reconnect the
condensate trap. Secure with the hose clamp.
When you return home, your furnace will be ready to start, as it is
not necessary to drain the antifreeze from the furnace.
/ ² OD rubber hose to the stub on the
4
7