61
R
Y W G
1
0
TURNS
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
HOOK-AROUND
VOLT/AMMETER
EXAMPLE:
5.
0
AMPS ON AMMETER
1
0
TURNS AROUND JAWS
=
0
.5 AMPS FOR THERMOSTAT SETTING
FROM UNIT 24-VOLT
TERMINAL BLOCK
A80201
Fig. 61 -- Amp Draw Check with Ammeter
2. Check Pressure Switch
This control proves operation of draft inducer. Check switch
operation as follows:
a. Turn off 115-v power to furnace.
b. Remove outer furnace door and disconnect inducer
motor lead wires from wire harness.
c. Turn on 115-v power to furnace.
d. Set thermostat to “call for heat” and wait 1 minute.
When pressure switch is functioning properly, hot
surface igniter should not glow, and status code LED
flashes a Status Code 32. If hot surface igniter glows
when inducer motor is disconnected, shut furnace
down immediately. Determine reason pressure switch
did not function properly and correct condition.
e. Turn off 115-v power to furnace.
f. Reconnect inducer motor leads, reinstall main furnace
door, and turn on 115-v power supply.
CHECKLIST
1. Put away tools and instruments. Clean up debris.
2. Check SW-1 through SW-3 after completing installation to
ensure desired settings for thermostat type (SW-1) and
blower-OFF delay (SW-2 and SW-3).
3. Verify flame rollout manual reset switch has continuity.
4. Verify that blower and outer doors are properly installed.
5. Cycle test furnace with room thermostat.
6. Check operation of accessories per manufacturer’s
instructions.
7. Review User’s Guide with owner.
8. Leave literature packet near furnace.
CHECKLIST—DIRECT VENT (2-PIPE) INSTALLATION
LOAD CALCULATION
____________
Heating Load (Btuh)
____________
Cooling Load (Btuh)
____________
Furnace Model Selection
COMBUSTION AIR AND VENT PIPING
Termination Location
____________
Roof or Sidewall
____________
Termination Kit --- 2 Pipe or Concentric
____________
Combustion-Air Pipe Length
____________
Combustion-Air Pipe Elbow Quantity
____________
Vent Pipe Length
____________
Vent Pipe Elbow Quantity
____________
Pipe Diameter Determined from Sizing Table
____________
Pipe Sloped To Furnace
Pipe Insulation
____________
Over Ceilings ________
____________
Low-Ambient Exposed Pipes
Condensate Drain
____________
Unit Level or Pitched Forward
____________
Internal Tubing Connections Free of
Kinks and Traps
____________
External Drain Connection
Leak Tight and Sloped
____________
Condensate Trap Primed before Start-Up
____________
Heat Tape Installed if Required
CHECKLIST -- START-UP
____________
Gas Input Rate
(Set Within 2 percent of Rating Plate)
____________
Temperature Rise Adjusted
Thermostat Anticipator
____________
Anticipator Setting Adjusted or
____________
Cycle Rate (3 Cycles per Hr) Selected
Safety Controls Check Operation
____________
Primary Limit
____________
Pressure Switch
58MEC