Carrier PG80MSU, Installation, Start-Up, Operating And Service And Maintenance Instructions

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PG80MSU: Installation, Start-up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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NOTE:
1.A filter is required for each return-air inlet. Airflow performance included 3/4-in. (19 mm) washable filter media such as contained in a factory - authorized accessory filter rack. See
accessory list. To determine airflow performance without this filter, assume an additional 0.1 in. w.c. available external static pressure.
2.Adjust the blower airflow settings as necessary for the proper air temperature rise for each installation.
3.Airflows over 1800 CFM require bottom return, two-side return, or bottom and side return. A minimum filter size of 20” x 25” (508 x 635 mm) is required.
4.For upflow applications, air entering from one side into both the side of the furnace and a return air base counts as a side and bottom return
5..The -- entry indicates unstable operating conditions.
FURNACE CONTROL PROGRAMMING AND
NAVIGATION
On-Board Control Method
This furnace model is equipped with an on-board 3-digit LCD display
with pushbutton navigation for the adjustment of operating parameters,
diagnostics, and service. The control board must be powered to use the
display and pushbuttons. Upon startup, the control will alternate
displaying the Model Program Number (
PRG
) and Software Version
(
uEr
). The control board has been programmed at the factory with a
Model Program Number specific to the furnace product number. The
correct Model Program Number is shown on the furnace rating plate.
The system’s status is displayed after startup or after no control buttons
have been pressed for 60 seconds. Status Code LED will also be
illuminated or blinking when displaying the system status. The codes
which indicate the current operating mode of the system as shown in
Table 11 .
Unit Size Airflow Setting Default Setting
External Static Pressure (IN.W.C.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
60100C
1 Const. Fan 865 745 640 525 425 315 170 - - -
2 935 825 725 620 515 420 315 175 - -
3 1035 935 830 745 640 550 460 365 235 140
4 1095 1000 900 815 725 630 545 455 360 240
5 1205 1125 1035 945 870 780 695 620 540 455
6 1290 1210 1125 1040 965 890 805 725 645 570
7 1385 1310 1235 1155 1080 1010 940 860 785 710
8 1495 1430 1360 1285 1215 1145 1080 1015 945 870
9 1585 1520 1455 1385 1315 1250 1185 1125 1065 995
10 1685 1625 1565 1505 1435 1370 1305 1250 1190 1135
11 1785 1725 1665 1605 1550 1485 1425 1365 1310 1255
12 Heating 1820 1765 1710 1655 1590 1530 1470 1410 1355 1305
13 1880 1830 1775 1720 1665 1610 1550 1490 1435 1385
14 1985 1930 1880 1830 1780 1730 1675 1620 1565 1515
15 2090 2040 1990 1940 1895 1845 1795 1745 1690 1645
16 2185 2140 2095 2045 2000 1960 1915 1865 1820 1770
17 Cooling 2285 2240 2195 2150 2110 2065 2025 1980 1940 1895
18 2465 2420 2375 2335 2290 2235 2180 2125 2060 2000
Table 10 – Airflow Settings
Default Airflow Settings
*
*. Setting #1 is the default setting for Constant Fan.
Designated Airflow Settings
Unit Size Heating Cooling Heating Constant Fan
36040B 4 16 (2-12) (1-7)
48060B 5 16 (3-11) (1-8)
60080C 9 16 (5-14) (1-8)
60100C 12 17 (7-15) (1-7)
Table 9 – Air Delivery - CFM (with filter) (Continued)
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, or death.
Blower access door switch removes 115-V power to control. No
component operation can occur unless switch is closed. Caution must
be taken when manually closing this switch for service purposes.
Do not tape or permanently allow the door switch to be bypassed.
Temporarily depress the door switch with one hand while accessing the
service buttons with your other hand. Do not touch uninsulated
electrical components.
Table 11 – System Status Display Codes
Display Operating Mode Notes
iDl
Idle/Standby Mode No active demands
Ht
Heating Mode Gas Heating active
CL1
Low Cooling Mode Low Cooling or Heat Pump active
CL2
High Cooling Mode High Cooling or Heat Pump active
Hpd
Heat Pump Defrost Mode Gas Heating cycle active during Heat Pump Defrost cycle
Cfn
Continuous Fan Mode Continuous Fan active
bLr
Secondary Unit Operating
Blower
Only used when control is the secondary furnace of a twinned furnace system and primary
furnace is active
##.#
Active Status Code See Fig. 35 or Furnace Service Label for codes