Weather-Rite TT Series, Инструкция по установке, эксплуатации и обслуживанию

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SECTION 24: S
TART
-
UP
P
ROCEDURES
123 of 198
Installation Code and Annual Inspections:
All installation and ser v ice of WEATHER-RITE
™
eq u ipment m u st b e performed b y a contractor
q u alified in the installation and ser v ice of eq u ipment
sold and s u pplied b y Weather-Rite LLC and conform
to all req u irements set forth in the WEATHER-RITE ™
man u als and all applica b le go v ernmental a u thorities
pertaining to the installation, ser v ice, operation and
la b eling of the eq u ipment.
To help facilitate optim u m performance and safety,
Weather-Rite LLC recommends that a q u alified
contractor cond u ct, at a minim u m, ann u al
inspections of yo u r WEATHER-RITE ™ eq u ipment
and perform ser v ice w here necessary, u sing only
replacement parts sold and s u pplied b y Weather-Rite
LLC.
Check installation site to ens u re all codes and
engineering specifications are correct. This section of
the man
u al is intended to b e u sed as an instr u ctional
g u ide to the commissioning of the direct fired air
handler. Fill o u t the attached start u p sheet (located
at the b ack of the man u al) as each step of the
proced u re is performed. This proced u re sho u ld b e
completed b y the commissioning contractor and
ret u rned to Weather-Rite LLC. If the doc u ment is not
ret u rned, the man u fact u ring date w ill b e u sed as the
w arranty start date.
24.1 Installation of Recirculatin g Air Handler
E v ery direct-fired air handler w hich recirc u lates room
air (AM style) m u st u tilize either a control system
w hich limits temperat u re rise in proportion to the
amo u nt of o u tdoor air, or a room car b on dioxide
sensor, installed per the man u fact u rer's
recommendations. The normally closed contacts of
this sensor m
u st b e w ired in as per the air handler's
w iring diagram, maintaining the room concentration
of CO2 b elo w 5,000 ppm.
24.2 Mechanical
Refer to appliance rating plate for minim u m o u tside
air req u irements d u ring recirc u lation operation.
Before installation, check that the local distri bu tion
condition, nat u re of gas and press u re, and the
c u rrent state of adj u stment of the appliance are
compati b le.
If filters are not installed ( v ia inlet hood or filter
section), an air strainer m u st b e installed on the inlet
of the air handler w ith openings less than or eq u al to
5/8" (16 mm) in diameter.
Air inlets m u st b e installed w ith the lo w est edge 16"
(406.4 mm) a b o v e any s u rface. This applies to roof
c u r b s, u pright stands and s u spended air handlers.
24.2.1 Sheave Ali g nment
Shea v es are factory aligned. On all air handlers,
check shea v e alignment as follo w s:
1. A string to the v ertical s u rface next to the
b lo w er shaft b earing. ( See Page 123, Figure
107 )
2. Wrap the string aro u nd the b lo w er shea v e and
across b oth shea v e s u rfaces as sho w n.
3. Adj u st u ntil all fo u r contact points to u ch the
shea v e s u rfaces. "IN" or "OUT" adj u stment of
the motor shea v e and/or motor adj u stment
may b e req u ired.
4. P u ll the string a w ay from the motor shea v e and
then mo v e it slo w ly b ack to w ards the shea v e,
making s u re the string remains straight w hile
to u ching all contact points.
5. Remo v e string b efore t u rning air handler on.
NOTE : Allo w ances m u st b e made for motor shea v es
w hich are w ider than the b lo w er shea v es.
FIGURE 107: Sheave Ali g nment
24.2.2 Belt Tension
• Belt tension sho u ld b e checked w ith a b elt-tension
ga u ge w hen one is a v aila b le. Follo w the b elt
tension ga u ge instr u ctions.
• When a tension ga u ge is not a v aila b le, meas u re
the b elt span of the b elts. ( See Page 124, Figure
108 .)
• Allo w for 1/64" (.04 cm) of deflection for each inch
of center distance length for the charted po u nds
of force. Check the ta b le b elo w for proper
deflection force.
• EXAMPLE: A 40" (101.6 cm) shaft center
distance w o u ld dictate 40"/64" or 5/8" (1.59
cm) of deflection. With a standard B-type
Correct Alignment
Incorrect Alignment