Daikin DPS025 - Start-Up Procedures; Before Start-Up Checks

Altitude Conversion
For elevations up to 2000 feet, rating plate input ratings apply.
For high altitudes (elevations over 2000 ft) contact Daikin
Applied Parts. See Table 20 for part numbers. Or contact local
gas supplier to conrm gas heating value has been devalued
for applicable elevations.
Table 20: Furnace Identication for Altitude (DPS 016–028)
Elevation Part Number
Natural Gas Fired Furnace with 50 MBH Burners
2000–2999 910166410
3000–3999 910166411
4000–4999 910166412
5000–5999 910166413
6000–6999 910166415
Natural Gas Fired Furnace with 45 MBH Burners
2000–2999 910166412
3000–3999 910166416
4000–4999 910166417
5000–5999 910166415
6000–6999 910166418
LPG Gas Fired Furnace with 50 MBH Burners
2000–2999 910166419
3000–3999 910166420
4000–4999 910166421
5000–5999 910166422
6000–6999 910166424
LPG Gas Fired Furnace with 45 MBH Burners
2000–2999 910166425
3000–3999 910166422
4000–4999 910166427
5000–5999 910166428
6000–6999 910166429
Start-Up Procedures
Start-Up Responsibility
DANGER
Overheating or failure of the gas supply to shut
off can cause equipment damage, severe personal
injury or death. Turn off the manual gas valve to the
appliance before shutting off the electrical supply.
The start-up organization is responsible for determining that
the furnace, as installed and as applied, will operate within the
limits specied on the furnace rating plate.
1. The furnace must not operate at insufcient airow or
temperature rise greater than specied (refer to Table
14 on page 41). On variable air volume systems it
must be determined that the furnace will not be operated
if or when system cfm is reduced below the specied
minimum airow cfm.
2. It must be established that the gas supply is within the
proper pressure range (refer to Table 14 on page 41).
Start-up and service of this equipment must be performed by
trained and experienced technicians. It is highly recommended
that the initial start-up and future service be performed by
Daikin trained technicians who are familiar with working on
live equipment. A representative of the owner or the operator
of the equipment should be present during start-up to receive
instructions in the operation, care and adjustment of the unit.
Before Start-Up
1. Notify inspectors or representatives who may be required
to be present during start-up of gas fuel equipment.
These could include the gas utility company, city gas
inspectors, heating inspectors, etc.
2. Review the equipment and service literature and become
familiar with the location and purpose of the furnace
controls. Determine where the gas and power can be
turned off at the unit and before the unit.
3. Determine that power is connected to the unit and
available.
4. Determine that the gas piping, meter, and service
regulator have been installed, tested, and meet the
equipment requirements.
5. Determine that proper instruments will be available for
the start-up. A proper start-up requires the following:
voltmeter, manometer or gauges with ranges for both
manifold pressure and inlet gas pressure.
Start-Up Preliminary
Close gas main.
1. Check the burner fan wheel for binding, rubbing, or loose
setscrews.
2. Check power.
3. Purge the gas lines.
4. Leak check. Using a rich soap-water mixture and a
brush, check the gas lines for leaks. Correct all leaks
before starting furnace.
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