Table of Contents
Advertisement
The horizontal portion of the venting system shall slope upwards
not less than 1/4- -in. per linear ft. (21 mm/m) from the furnace to
the vent and shall be rigidly supported every 5 ft. or less with
metal hangers or straps to ensure there is no movement after
installation.
SIDEWALL VENTING
This furnace is not approved for direct sidewall horizontal
venting.
In the U.S.: Per section 12.4.3.1 of the NFGC, any listed
mechanical venter may be used, when approved by the authority
having jurisdiction.
In Canada: Per section 8.24.2 of the CAN/CSA- -B149.1- -05,
any listed mechanical venter may be used, when approved by the
authority having jurisdiction.
Select the listed mechanical venter to match the Btuh input of the
furnace being vented. Follow all manufacturer's installation
requirements for venting and termination included with the listed
mechanical venter.
START- -UP, ADJUSTMENT, AND SAFETY
CHECK
General
WARNING
!
FIRE HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
This furnace is equipped with manual reset limit switches in
the gas control area. The switches open and shut off power to
the gas valve, if a flame rollout or overheating condition
occurs in the gas control area. DO NOT bypass the switches.
Correct problem before resetting the switches.
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care
and wear appropriate protective clothing, safety glasses and
gloves when handling parts, and servicing furnaces.
Fig. 50 - - Using Tin Snips to Cut Tie Points
36
1. Maintain 115- -v wiring and ground. Improper polarity will
result in rapid flashing LED and no furnace operation.
2. Make thermostat wire connections at the 24- -v terminal
block on the furnace control. Failure to make proper
connections will result in improper operation. (See Fig.
24.)
3. Gas supply pressure to the furnace must be greater than
4.5- -in. wc (0.16 psig ) but not exceed 14- -in. wc (0.5
psig).
4. Check all manual- -reset switches for continuity.
5. Replace blower compartment door. Door must be in place
to operate furnace.
6. Setup switch descriptions The variable speed furnace
control has DIP switches to select thermostat staging,
blower off delay timings, air flow selection and other
operational or service related functions. (See Fig. 27, 59
and Table 8.)
CAUTION
!
A04127
Advertisement
Table of Contents
