Carrier 58MEC User Manual

61
R Y W G
10 TURNS
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
HOOK-AROUND
VOLT/AMMETER
EXAMPLE:
5.0 AMPS ON AMMETER
10 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 R ate (3 Cycles per Hr) Selected
Safety Controls Check Operation
____________ Primary Limit
____________ Pressure Switch
58MEC

Carrier 58MEC Specifications

General

Brand	Carrier
Model	58MEC
Category	Furnace
Language	English