Start-Up, Adjustment, And Safety Check - Carrier R95ESN Installation, Start-Up, Operating And Service And Maintenance Instructions

R95ESN: Installation, Start-up, Operating and Service and Maintenance Instructions
START-UP, ADJUSTMENT, AND SAFETY
CHECK
!
IMPORTANT INSTALLATION AND START-UP PROCEDURES
Failure to follow this procedure may result in a nuisance smoke or odor
complaint.
The manifold pressure, gas rate by meter clocking, temperature rise and
operation must be checked after installation. Minor smoke and odor
may be present temporarily after start-up from the manufacturing
process. Some occupants are more sensitive to this minor smoke and
odor. It is recommended that doors and windows be open during the
first heat cycle.
General
1. Furnace must have a 115-v power supply properly connected and
grounded.
NOTE: Proper polarity must be maintained for 115-v wiring. Control
status indicator light flashes rapidly and furnace does not operate if
polarity is incorrect or if the furnace is not grounded.
2. Thermostat wire connections at terminals R, W, G, and Y must be
made at 24-v terminal block on furnace control.
3. Natural gas service pressure must not exceed 0.5 psig (14- in. w.c.,
350 Pa), but must be no less than 0.16 psig (4.5-in. w.c., 1125 Pa).
4. Blower door must be in place to complete 115-v electrical circuit
and supply power to the furnace components.
Before operating furnace, check flame rollout manual reset switch for
continuity. If necessary, press button to reset switch.
EAC-1 (115vac) terminal is energized whenever blower operates. HUM
(24vac)terminal is only energized when the gas valve is energized in
heating.
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in intermittent unit operation
or performance dissatisfaction.
These furnaces are equipped with a manual reset limit switch in burner
assembly. This switch opens and shuts off power to the gas valve is an
overheat condition (flame
assembly/enclosure. Correct
improper gas pressure setting, improper burner or gas orifice
positioning or improper venting condition before resetting switch. DO
NOT jumper this switch.
Prime Condensate Trap with Water
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow these warnings could result in personal injury or
death.
Failure to use a properly configured trap or NOT water-priming trap
before operating furnace may allow positive pressure vent gases to
enter the structure through drain tube. Vent gases contain carbon
monoxide which is tasteless and odorless.
1. Remove upper and middle collector box drain plugs opposite of the
condensate trap. See Fig. 58.
2. Connect field-supplied 5/8-in. (16 mm) ID tube with attached
funnel to upper collector box drain connection.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
NOTICE
rollout) occurs in the
inadequate combustion-air
3. Pour one quart (liter) of water into funnel/tube. Water should run
through collector box, overfill condensate trap, and flow into open
field drain.
4. Remove funnel; replace collector box drain plug.
5. Connect field-supplied 5/8-in. (16 mm) ID tube to middle collector
box drain port.
6. Pour one quart (liter) of water into funnel/tube. Water should run
through collector box, overfill condensate trap, and flow into open
field drain.
7. Remove funnel and tube from collector box and replace collector
box drain plug.
UNIT OPERATION HAZARD
Failure to follow this caution may result in intermittent unit operation
or performance satisfaction.
Condensate trap must be PRIMED or proper draining may not occur.
The condensate trap has two internal chambers which can ONLY be
primed by pouring water into the inducer drain side of condensate trap.
Fig. 58 – Priming Condensate Trap
Purge Gas Lines
If not previously done, purge the lines after all connections have been
made and check for leaks.
burner
supply,
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death,
and/or property damage.
Never purge a gas line into a combustion chamber. 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. A
fire or explosion may result causing property damage, personal injury
or loss of life.
47
CAUTION
!
WARNING
!
A11392