Specifications
3
INDUCED
DRAFT
MOTOR
COMBUSTION
FAN HOUSING
MAIN GAS
VALVE
MAIN BURNER SECTION
HEAT EXCHANGER
SECTION
ROLLOUT
SWITCH
C07037
Fig. 2 -- Typical Gas Heating Section
Table 2 – Altitude Compensation
48PD05--06, 48PG03--07
ELEVATION
(ft)
NATURAL GAS
ORIFICE†
LP
ORIFICE†
0-1,999
45 52
2,000
47 52
3,000
47 53
4,000
47 53
5,000
48 53
6,000
48 53
7,000
48 53
8,000
49 54
9,000
49 54
10,000
50 54
11,000
51 54
12,000
51 55
13,000
52 55
14,000
52 56
48PG08--14
ELEVATION
(ft)
NATURAL GAS
ORIFICE†
LP
ORIFICE†
0-1,999
43 50
2,000
44 51
3,000
44 51
4,000
44 51
5,000
45 51
6,000
45 52
7,000
47 52
8,000
47 52
9,000
47 53
10,000
48 53
11,000
49 53
12,000
50 54
13,000
50 54
14,000
51 55
LEGEND
LP --- L i q u id P r o p a n e
*As the height above sea level increases, there is less oxygen per cubic foot
of air. Th eref or e, heat input rate should be reduced at higher altitudes.
Includes a 4% input reduction per each 1000 ft.
†Orifices available through your Carrier dealer.
MAIN
GAS
VALVE
LABEL
LOCATION
MANIFOLD
MOUNTING
SCREWS
MANIFOLD
MOUNTING
SCREWS
MANIFOLD
PRESSURE
TAP PLUG
C09555
Fig. 3 -- Main Burner Section (48PG03--07 Shown)
Step 3 — Re--Install Manifold Pipe
1. Attach manifold pipe to the burner bracket using four
screws. (See Fig. 3.) Make sure that all orifice fittings are
properly seated in the burner inlets.
2. Reconnect wires to the igniter, flame sensor, flame rollout
switch, and gas valve.
3. Reconnect gas piping to the gas valve.
Step 4 — Apply Conversion Labels
1. Attach the LP Conversion Plate next to the unit rating plate.
2. Complete the Conversion Responsibility label by writing
the kit number, dealer name, and date in ink. Attach to the
burner bracket near the main gas valve. (See Fig. 3.)
3. Attach Warning Label on the outside of the gas section
access door.
Step 5 — Check Unit Operation and Make
Necessary Adjustments
NOTE: Gas pressure must not be less than 5 in. wg or greater than
13 in. wg at the unit connection.
1. Remove pressure tap plug from manifold pipe and
connect a pressure gauge or manometer.
2. Turn on electrical supply.
3. Open the manual shutoff valve on the gas supply piping.
Check pipe connection to main gas valve for leaks.
4. Set the switch on the main gas valve to the ON position.
5. Call for high stage heat (W2 energized). The unit may
require several ignition attempts due to trapped air in the
manifold pipe.
6. When main burners ignite check orifice fittings for leaks.
Repair if necessary.
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result in personal injury
and/or property damage.
Never test for gas leaks with an open flame. Use a
commercially available soap solution made specifically for the
detection of leaks to check all connections.
!
WARNING