Suburban DynaPack S Series User Manual

5 Suburban DynaPack H Series Owner's Manual 10/2017 Rev.4
14. Compare the measured temperature rise to the nameplate range. If the
measured rise is lower than the nameplate minimum, then select the next
lower blower speed for the heating speed. If the measured temperature rise
is above the nameplate maximum, then select the next higher blower speed
for the heating speed.
15. If a new blower speed was selected then re-measure the temperature rise
and repeat the adjustment if needed.
COOLING ADJUSTMENTS
The only cooling adjustment that can be made is in the blower speed.
1. Turn the unit on in the cooling mode and allow to operate until stable.
2. Place a thermometer in the return air opening and another in the supply air
opening as close to the unit as possible.
3. The a/c unit must operate until condensate water is coming off of the
evaporator coil. Measure the return and supply air temperatures.
4. Proper cooling operation is obtained if there is a 20 degree Fahrenheit drop
in air temperature through the a/c unit.
5. If the air temperature drop is greater than 22 degrees then switch the cooling
speed to the next higher speed. If the air temperature drop is less than 18
degrees then switch the cooling speed to the next lower blower speed.
NOTE: If the cooling speed and the heating speed are the same, then
the heating pigtail from the board and the cooling pigtail from the board
can be attached to the same pigtail from the motor. Cap and secure
with electrical tape all unused blower speed pigtails.
SYSTEM PERFORMANCE
The unit has been factory tested to insure proper air conditioning
performance. If it is suspected that there is a refrigerant leak in the
unit then the charge can be checked by placing a thermometer on
the liquid line near the lter dryer and connecting a pressure gauge
to the high side pressure tting. Use a R410A saturated temperature
chart to calculate the liquid subcooling. The unit is properly charged
if it is operating between 8 and 14 degrees subcooling at any outdoor
temperature above 65° F. See DYPA12 charging instructions below.
The system should be checked to see that none of the wiring worked
loose during shipment.
ROOM AIR BLOWER
The Dynapack unit contains a 5 speed motor to allow a range of
adjustments so the proper cooling and heating speeds can be obtained
after installation. Table 4 lists the factory settings for the heating and
cooling speeds based on capacity. The factory settings should work for
most installations but the actual ductwork will dictate the best settings
for your installation. The indoor motor is permanently lubricated and
does not require periodic re lubricating.
The room air blower is controlled by the unit control board in addition
to the wall thermostat. With the thermostat fan switched to ‘AUTO’, the
room air blower will operate only when there is a call for heat or cooling.
If the thermostat fan switch is switched over to ‘ON’, then the room air
blower will run continuously. The control board will over ride the wall
thermostat when switched to ‘AUTO’. There are various delay timings
built into the board to delay starting and stopping of the room air blower
to increase comfort and energy efciency.
The furnace also contains safety limits that will operate when an
abnormal condition is detected. These limits serve a particular purpose
and should not be tampered with by relocating or wiring around. If the
furnace does not operate, or the room air blower does not come on, or
the a/c unit does not operate, then call a licensed service technician to
diagnose and repair.
The Dynapack unit is designed certied to operate up to 4500 feet
above sea level without modication for both the USA and Canada. Call
Technical Service at 423-775-2131 for installations above 4500 feet.
OPERATION IN EXTREME COLD OR SNOWY AREAS
In those areas where the ambient temperature is consistently below
0° F, indoor comfort can be improved by adjusting the heating blower
speed to obtain the maximum temperature rise allowed per the unit
data plate.
A Dynapack unit installed on the ground oor must have the furnace
intake and exhaust above the anticipated snow fall for that area. Higher
snowfall than anticipated will block the furnace intake and lead to the
unit shutting off.
UNIT START - UP
WARNING! Failure to follow these instructions may lead to a re, explosion, property
damage, personal injury, or loss of life.
CAUTION: This furnace is equipped with a direct ignition control. Do
not attempt to manually light the burners.
BEFORE OPERATING, smell all around the appliance area for gas. Be
sure to smell next to the oor because gas is heavier than air and will
settle on the oor. If you smell gas STOP. Open the windows and doors
to clear out any gas. Recheck all gas piping and connections for leaks.
TO CHECK THE UNIT OPERATION:
1. Make sure the gas valve is switched ON. Remove the gas
compartment door. Turn the gas valve knob or move the switch
to the ON position. See gure 6. Do not use any tools to turn the
knob. If you are unable to push in and turn the knob by hand then
call a qualied service technician for assistance. Replace the gas
compartment door.
2. Turn on electrical power to the unit.
3. Switch the room thermostat to heat.
4. Raise the set point to above the room temperature.
5. The thermostat will call for heat and the combustion blower will
begin to operate.
6. The combustion blower will operate for 15 to 20 seconds before
the ignition controls begins sparking, then the gas valve will open
and the burners will light. The burners can be viewed through the
sight glass in the door panel.
7. The room air blower starts 30 seconds after the burners light.
8. Once the room reaches the set temperature, the burners turn off
and the room air blower turns off 90 seconds later.
9. Switch the room thermostat over to cooling.
10. Lower the set point to below the room temperature.
11. After a slight delay the room air blower will begin to run and the
compressor will start. Note: There will be a 5 minute delay in the
compressor starting if the thermostat set point was raised and then
lowered again.
12. Once the room reaches the set temperature, the compressor will
turn off and the room air blower will turn off 30 seconds later.
TO SHUT DOWN UNIT
To turn off the unit switch the room thermostat to OFF. Turn the electrical
power off and close the manual gas supply valve before performing any
service to the unit.
HEATING ADJUSTMENTS
1. Turn off the unit at the room thermostat and shut off the manual gas valve.
2. Connect a pressure gauge with suitable range (0 to 10” for natural gas) to
the inlet pressure port on the gas valve. See gure 6.
3. Open the manual gas valve and turn the unit on.
4. Once the furnace is operating, check the inlet gas pressure. Adjust the
pressure regulator to obtain an inlet pressure of 5” to 7” water column for
natural gas.
5. Turn off the unit and shut off the manual gas valve.
6. Move the pressure gauge to the manifold pressure port on the gas valve.
See gure 6.
7. Once the furnace is operating, check the manifold pressure. Adjust the gas
valve pressure regulator to obtain a manifold pressure of 3.5” water column
for natural gas.
8. On natural gas installations the input to the furnace must be checked to
insure safe operation. Any other gas appliances that use the gas meter
must be turned off including the pilot lights.
9. With the Dynapack furnace running, count the time it takes for the gas meter
to make one revolution. Also record the gas meter rate of cubic feet per
revolution. You will also need the average heating value of the natural gas
for your location. Plug these factors into the equation below to calculate the
gas input rate to the furnace in BTU per hour.
BTU/HR Input =
Cubic Feet Per
Revolution
X 3600 X
Heating
Valve
Number of Seconds Per
Revolution
10. Your recorded value on input must be within + or- 2% of the rated input. If it
is not then adjust the manifold pressure lower to reduce the input or higher
to increase the input. Do not go outside of 3.2” to 3.8” water column.
11. Turn off the unit, close the manual gas valve, and remove the pressure
gauge. Make sure the gas valve pressure port plug screws are tightened
along with the gas valve regulator cap. Replace the burner compartment
door.
12. Open the manual gas valve and turn on the furnace.
13. Place a thermometer in the return air along with one in the supply air
as close to the furnace as possible. Once the supply air temperature is
constant, record both temperatures. Subtract the return air temperature
from the supply air temperature. This difference is the temperature rise of
the furnace.

Suburban DynaPack S Series Specifications

General

Brand	Suburban
Model	DynaPack S Series
Category	Air Conditioner
Language	English