Trane GGAA, Инструкция по установке, эксплуатации и обслуживанию

Страница: 24 / 60

24 MUA-SVX005B-EN
IIm mp po orrtta an ntt:: It is important that the final temperature leaving the unit does not exceed 160° F (71°
C). When final air throughput adjustments are being made, a check of the discharge
air temperature should be made after unit has operated for 15 to 20 minutes.
W WA AR RN NIIN NG G
F Fiirre e H Ha azza arrd d!!
F Fa aiillu urre e tto o ffo ollllo ow w iin nssttrru uccttiio on nss b be ello ow w cco ou ulld d rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss iin njju urry y,, a an nd d p prro op pe errtty y
d da am ma ag ge e..
A A u un niitt ssh ho ou ulld d n ne ev ve err b be e a allllo ow we ed d tto o ccy ycclle e o on n tth he e p prriim ma arry y lliim miitt ffo orr a a p prro ollo on ng ge ed d p pe erriio od d o off
ttiim me e.. IItt iiss a a ssa affe etty y cco on nttrro oll tto o p prre ev ve en ntt a a ffiirre e.. IIff ccy ycclliin ng g o on n tth he e p prriim ma arry y lliim miitt iiss n no otte ed d,,
cco orrrre eccttiiv ve e m me ea assu urre ess ssh ho ou ulld d b be e tta akke en n iim mm me ed diia atte elly y..
IIm mp po orrtta an ntt:: At initial unit installation, unit should be started momentarily to confirm proper
blower wheel rotation as the unit will deliver some air with the blower wheel running
backwards.
Two basic air control systems can be used to deliver conditioned air to the occupied space:
intermittent or constant fan operation.
• IIn ntte errm miitttte en ntt F Fa an n O Op pe erra attiio on n: The unit employs an air control system which utilizes a fan time
delay relay to operate the fan while heating and the thermostat while cooling. Refer to unit
wiring diagram.
• C Co on nsstta an ntt F Fa an n O Op pe erra attiio on n: The unit can be wired to give an air control system which
constantly circulates air through the unit and occupied space with constant fan operation.
Refer to unit wiring diagram.
IIm mp po orrtta an ntt:: Check blower belt tension. Proper belt tension is important to the long life of the belt
and motor. Proper belt tension will allow the belt to be depressed 1/2" to 3/4".
• It is important that the blower motor and the blower wheel pulleys be in good alignment, with
the motor and blower shafts parallel.
• Belt tension must be adjusted to give approximately 3/4" deflection of the belt when finger
pressure is applied to the middle of the belt (See
Figure 10, p. 25 ). Small changes in this
tension may be necessary for optimum operation. Belts will stretch over a period of time,
requiring an adjustment to this tension. See
“Maintenance,” p. 30 section for belt and pulley
adjustments.
• These units are set at the factory for the RPM required to meet the air volume (CFM) and
external static pressure ordered. If the estimated external static is incorrect, or changes were
made to the duct system, the blower RPM may need to be changed.
• Both the Standard and High CFM Blowers use motors which are equipped with adjustable
pitch pulleys. After removing belt(s), loosen the pulley set screw and remove the key, turn
adjustable half of a pulley clockwise to increase RPM, or counter-clockwise to decrease RPM.
Insert key, tighten set screw and replace belt(s). Adjust belt tension to give 1/2" to 3/4" belt
play when depressed.
N NO OT TIIC CE E
B Bllo ow we err M Mo otto orr F Fa aiillu urre e!!
F Fa aiillu urre e tto o ffo ollllo ow w iin nssttrru uccttiio on nss b be ello ow w cco ou ulld d rre essu ulltt iin n iim mp prro op pe err u un niitt o op pe erra attiio on n a an nd d m mo otto orr
ffa aiillu urre e..
B Bllo ow we err m mo otto orr ffu ullll llo oa ad d a am mp pss ssh ho ou ulld d n ne ev ve err b be e e ex xcce ee ed de ed d.. R Re effe err tto o m mo otto orr d da atta a p plla atte e ffo orr
m ma ax xiim mu um m ffu ullll llo oa ad d a am mp pss..
• After changing blower RPM, confirm blower motor full load amps have not been exceeded.
See motor data plate for maximum full load amps.
O Op pe erra attiio on n