Service manual

035-20465-001 Rev. A (0704)
8 Unitary Products Group
SECTION III: REPLACEMENT PARTS LIST
FIELD INSTALLED ACCESSORIES - NON-ELECTRICAL
FIGURE 8: Furnace Control Event Schedule
Thermostat Calling for Heat
Thermostat Satisfied
(Seconds)
THERMOSTAT
INDUCER
IGNITOR
MAIN VALVE
HUMIDIFIER
ELECTRONIC
AIR CLEANER
CIRCULATING
BLOWER
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
15 Sec.
Post
Purge
Fan on Delay
30 Seconds
0
2
17 22
52
0
60, 90, 120, 180 SEC.
Selectable Fan Off Delay
TABLE 2: Field Installed Accessories - Non-electrical
MODEL NO. DESCRIPTION USED WITH
1NP0347
PROPANE (LP) CONVERSION KIT
040, 080,100
1NP0348 060, 115, 130
1PS0301
HIGH ALTITUDE PRESSURE SWITCH KIT
(Does Not Include Orifices)
SEE CHART BELOW
1PS0302
1PS0311
1PS0312
1BR0314
EXTERNAL BOTTOM RETURN FILTER, with High Velocity Filter for Horizontal
Application for Upflow Bottom Return Application.
14-1/2” CABINETS
1BR0317 17-1/2” CABINETS
1BR0321 21” CABINETS
1BR0324 24-1/2” CABINETS
1CB0314
COMBUSTIBLE FLOOR BASE for Downflow Units
14-1/2” CABINETS
1CB0317 17-1/2” CABINETS
1CB0321 21” CABINETS
1CB0324 24-1/2” CABINETS
1SR0302 EXTERNAL SIDE FILTER RACK - with Filter Rack (6 pack) ALL MODELS
HIGH PRESSURE SWITCH
Input (MBH) Output (MBH)
2,000 Ft. to 5,500
Ft.
>5,500 Ft. to10,000
Ft.
40 32 1PS0301 1PS0301
60 48 1PS0301 1PS0301
80 64 1PS0302 1PS0302
100 80 1PS0312 1PS0311
115 92 1PS0312 1PS0311
130 104 1PS0312 1PS0311