Carrier 58DR - Manual (Page 8)

To change motor speed taps, remove the motor tap lead (See
Table 5.) and relocate it on the desired terminal on the plug­
in terminal block/speed selector located on the blower.
A CAUTION
When adjusting the blower speed, make certain that
the temperature rise across the heat exchanger does not
exceed that specified on the rating plate.
Table 5—Speed Selector
Speed Tap No.*t
Common C
Hi 1
Med-Hi 2
Med-Low 3
Low 4
*Furnaces without a cooling fan relay are equipped with a 3-speed motor.
fWhite wire from control box to common; black wire from control box to
cooling speed selection (when used); red wire from control box to heat­
ing speed selection.
B. Automatic Gas Control Valve
These units are equipped with an automatic gas control
valve. If not already checked when lighting the msdn
burner, check the proper operation of this valve by moving
the room thermostat pointer above and below room temper­
ature and observing that the main burners Hght on “caU for
heat” and go off when the pointer is moved below room tem­
perature setting.
NOTE: For ease of adjusting the IID pilot flame, disconnect
one power lead at main gas valve. For Model 36E Gas
Valve, discoimect terhnnal No. 1; and for Model VR800A or
VR8200H Gas Valve, turn manual valve knob to PILOT.
This wiU prevent main burner ignition and allow time to
adjust the pilot. Reconnect the power lead or turn manual
valve knob to ON after adjustment.
A CAUTION
Be sure to foUow startup and pilot safety check proce­
dures as outlined in “Procedures for Natural-Draft
Gas-Fired Furnaces” instructions packaged with the
equipment.
X. CARE AND MAINTENANCE
A CAUTION
Because of possible deunage to the equipment or per­
sonal injury, maintenance should be performed by qual­
ified persons only.
A WARNING
Never store anything on, or in contact with, the fur­
nace, such as:
1. Spray or aerosol cans, rags, brooms, dust mops,
vacuum cleaners, or other cleaning tools.
2. Soap powders, bleaches, waxes or other cleaning
compounds, plastic or plastic containers, gasoline,
kerosene, cigEirette lighter fluid, dry deeming fluids,
or other volatile fluids.
3. Paint thinners and other painting compounds,
paper bags or other paper products.
A failure to adhere to this warning can cause corrosion
of the heat exchanger and vent system, fire, personal
injury, or death.
^ Fig. 13—Honeywell Model VR8200H
For continuing high performance, and to niininiize possible
equipment failure, it is essential that periodic maintenance
be performed on this equipment. Consult your local Dealer
as to the proper frequency of maintenance and the availabil­
ity of a maintenance contract.
The ability to properly perform maintenance on this equip­
ment requires certain mechanical skills and tools. If you do
not possess these, contact your Dealer for maintenance.
A WARNING
Turn off the gas and electrical supplies to the unit
before performing any mEiintenance or service. Follow
the relighting instructions on the label attached to the
furnace. A failure to adhere to this warning can cause
persond injury.
The minimum maintenance that should be performed on the
equipment is as follows:
1. Check and clean or replace air filter each month or as
required.
-> 2. Check blower motor and wheel for cleemliness and lubri­
cation (when oilers are provided) each heating and cool­
ing season. Clean and lubricate as necessary.
3. Check electrical connections for tightness and controls
for proper operation each heating season. Service as
necessary.
A WARNING
As with any mechanical equipment, personal injury can
result from sharp metal edges, etc.; therefore, be careful
when removing parts.