Rapid 7500 136, Инструкция по установке, эксплуатации и обслуживанию

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7500-S
ERIES
I
NSTALLATION
, O
PERATION AND
S
ERVICE
M
ANUAL
52 of 143
SECTION 14: ELECTRICAL
Each air t u rno v er u nit is eq u ipped w ith a w iring
diagram w hich w ill v ary depending on the type of
controls and options s u pplied.
Note: Spark testing or shorting of the control w ires
b y any means w ill render the transformers
inoperati v e.
14.1 Wirin g and Electrical Connections
All electrical w iring and connections, incl u ding
electrical gro u nding, m u st comply w ith;
United States: Refer to National Electrical Code ® ,
NFPA 70 - latest re v ision. Wiring m u st conform to the
most c u rrent National Electrical Code ® , local
ordinances, and any special diagrams f u rnished.
Canada: Refer to Canadian Electrical Code, CSA
C22.1 Part 1 - latest re
v ision.
Check rating plate on air t u rno v er u nit for s u pply
v oltage and c u rrent req u irements.
If any of the original control w ire s u pplied w ith the air
t u rno v er u nit m u st b e replaced, replace it w ith type
THHN 221° F (105°C), 600 V, 16 ga u ge w ire or
eq u i v alent. For all other w ires, replace w ith the
eq u i v alent size and type of w ire that w as originally
pro v ided w ith the air t u rno v er u nit.
14.2 Remote Panel
All po w er s u pply and motor w iring m u st b e type
THWN - or eq u i v alent, minim u m w ith a 167° F (75°
C) temperat u re rise. For w ire ga u ge sizes, See Page
52, Table 15
.
14.2.1 Remote Panel Mountin g Distance
If the interconnection w iring b et w een the remote
panel and the air t u rno v er u nit control enclos u re is
r u n in a single cond u it, the w ire r u n can b e as long as
200' (60.9 m). For longer w ire r u ns, cons u lt the
factory. Care sho u ld b e u sed to a v oid r u nning the
interconnect w iring near large ind u strial loads or high
v oltage w ire r u ns as that may f u rther limit the length
of the interconnect w ire r u n.
Table 15: Control Volta g e Wirin g For All Control
Systems
NOTE: Wiring for temperat u re controls m u st b e r u n in
shielded ca b le as indicated on the w iring diagram.
14.2.2 Low Volta g e Control Wirin g
Lo w v oltage (24V - AC/DC) control w iring in excess of
100' (30.5 m) in length sho u ld b e in its o w n separate
cond u it r u n to pre v ent interference.
14.3 Motor Current Draw
For c u rrent req u irements of the motor, see rating
plate located on the b lo w er motor.
14.4 Control Current Draw
The maxim u m c u rrent dra w for an air t u rno v er u nit’s
controls and accessories is 4.5 A.
14.5 Safety Systems
Safety systems are req u ired for proper performance
of the air t u rno v er u nit. The air t u rno v er u nit shall not
b e permitted to operate w ith any safety system
disa b led. If a fa u lt is fo u nd in any of the safety
systems, then the system shall b e repaired only b y a
contractor q u alified in the installation and ser v ice of
indirect fired heating eq u ipment, u sing only
components that are sold and s u pplied b y Rapid
Engineering LLC. See Page 53, Table 16 for a b rief
description of each safety de v ice, its location and its
s w itching v oltage.
DANGER
Electrical Shock Hazard
Disconnect electric before service.
More than one disconnect switch may be
required to disconnect electric from
equipment.
Equipment must be properly grounded.
Failure to follow these instructions can result
in death or electrical shock.
VOLTS WIRE GAUGE WIRE FEET
120 18 150
120 16 250
120 14 350