O-ITF-07
Page
8
(7)
Rotate damper (Face & Bypass, Outside Air, Return Air, Exhaust and Zone Dampers) shafts to
test action; rough handling may have caused damper blades to bind. Damper shaft extension
(1/2" shaft) is provided to accept manual or automatic controls. Do Not overdrive damper
motors, this will deform dampers and/or linkage.
(8)
Outside air inlet hood and exhaust outlets (if not mounted when shipped) have been predrilled for
attachment in field. After mounting, hoods should be caulked for weatherizing. Both the hood
and the outlets include birdscreen and louvers.
(9)
Filters (when furnished by TEMTROL, INC.) are often furnished and mounted in the racks or in
boxes inside the unit. Check to make sure the filter cartridge count is correct. (Filter count is
found on the Data Sheet). If filter count is short, the exact number received should be noted on
the freight bill at the time of delivery. Check to make sure that filter media has been installed
properly in the rails. Check to be sure that the filters called for are used; failure to use the filters
that your TEMTROL, INC. Air Handler has been designed for can cause fan motor overload
and/or cause the coils to become dirty and restrict airflow. Filter access doors should always be
latched firmly to stop air by-pass around filter cartridges.
(10)
Check all screws, bolts, nuts, electrical and piping connections for tightness.
(11)
If unit heaters are provided check thermostat settings to insure freeze protection.
(12)
Supply and return fan drives are provided in the mid-speed adjustment range when variable
speed sheaves are furnished. The motor sheave pitch diameter is field adjustable for the required
air flow. When final adjustments are complete the current draw of the motor should be checked
and compared to full load amperage rating of the motor. After supply fan is set, the return fan
drives should be adjustable for proper pressurization of the building. Sheaves with two or more
grooves should be adjusted by the same number of 1/2 or full turns from closed position to insure
the same pitch diameter so belts bear equal load. DO NOT FORCE BELT OVER THE
GROOVES. Hub type fan sheaves are furnished. Sheaves must be tightened securely before
drive
is
operated.
(13)
Hinged or slide rail motor mounts are furnished with two adjusting bolts. Bolts must be adjusted
equally or so drives maintain proper alignment. Correct belt tension should be acquired by use of
belt tension checker tool. Over tightened belts reduce belt and bearing life substantially, yet belts
must be tight enough to prevent slippage.
(14)
Humidifiers if installed include operator, trap, strainer and manifold mounted or furnished and
mounted by contractor. Supply steam connects at top to strainer and return connects at leaving
side of trap. Piping to and from humidifier should not be reduced in size with pitch (of 1/2" in
10') length without sag.
(15)
After 24 hours operation re-check "start-up" items.
(16)
See Prestart and Operation Check Sheet.
