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

Страница: 121 / 205

SECTION 23: D
IRECT FIRED PROCESS AIR HEATERS
115 of 198
FIGURE 97: Exhaust Interlock Circuit
2. If a p u rge cycle b et w een v entilation cycle mode
and the b ake cycle mode is not s u pplied w ith
the Process Heater, then the installer m u st
s u pply a p u rge timer that delays the b ake cycle
from operating for a minim u m of 3 min u tes or
at least 4 air changes of the space. See Page
115, Figure 98 .
FIGURE 9 8 : Pur g e Circuit
3. The space ser v iced b y the Process Heater,
d u ring the p u rging cycle and b ake cycle mode
m u st ha v e all spray eq u ipment t u rned off. If not
s u pplied b y the Process Heater, then the
installer m u st electrically interlock the spray
eq u ipment w ith the Process Heater. See Page
115, Figure 99 .
FIGURE 99: Spray E q uipment Interlock Circuit
23.4 WEATHER-RITE ™ Control Packa g es
Vario u s control packages are a v aila b le to
complement the process heaters. These control
packages interlock
w ith the exha u st systems, lighting
circ u its, spraying eq u ipment. These packages ens u re
p u rging of the space (3 min u tes minim u m w ith
adj u sta b ility to lengthen if process req u ires) takes
place b efore the b ake cycle is initialized and also
s u pplies a cool-do w n cycle (operator adj u sta b le) for
after the b ake cycle. All packages are a v aila b le w ith
optional exha u st system v aria b le freq u ency dri v e.
23.4.1 : WRP- 1 Remote Control Station - 100%
Ventilation Air
1. Description:
• NEMA1 hinged control panel.
• S u mmer-Off-Winter s w itch.
• Three system indicating lights; Blo w er, B u rner
and Flame Fail u re.
• Maxitrol "M" Series temperat u re set point w ith
digital temperat u re indicator.
f
A
B
1
-
-
-
THE N /O AUXILIARY CO N TACT OF A
PROCESS’ EXHAUST FA N (S)
SHOULD BE CO NN ECTED BET W EE N
TERMI N ALS #1 A N D #1 U N LESS THE
PROCESS HEATER IS DIRECTLY
CO
NN ECTED TO THE SYSTEM
TO MAI N PO W ER
f f
f
FUSE F2 FUSE F3
CO N TROL TRA N SFORMER
SUMMER/OFF/ W I N TER S W ITCH*
SUPPLY FA N O V ERLOADS
W IRE TO EXH. FA N CIRCUIT
EXHAUST FA N AIR FLO W S W ITCH
N OTE: REMO V E JUMPER W IRE BET W EE N 17 & 17
IF EXHAUST AIR FLO W S W ITCH IS USED
SUPPLY FA N CO N TACTOR COIL
SUPPLY FA N AUXILIARY CO N TACT
17
3
4
SUPPLY FA N AIR FLO W S W ITCH
V OLUME AIR FLO W S W ITCH
KEY;
TERMI N AL LOCATED O N MAI N PA N EL
TERMI N AL LOCATED O N REMOTE STATIO N
FIELD W IRI N G
13
5
16
17
f f
f
f
f f
2
f
f
f
f f
f
14 14
15 13
OFF
W I N . SUM.
5
120 V
FUSE F1
KEY;
2
f
SUM.
A
B
OFF
WIN.
2
TO MAI N PO W ER
f
FUSE F2
FUSE F1
FUSE F3
120 V
CO N TROL TRA N SFORMER
PURE TIMER
TERMI N AL LOCATED O N MAI N PA N EL
TERMI N AL LOCATED O N REMOTE PA N EL
FIELD W IRI N G
BAKE CYCLE
START CO
N TACT
14
5
5
1
1
f f
f
f
13
5
SUMMER/OFF/ W I N TER S W ITCH*
f f
f
f
BAKE CYCLE
ACTI
V ATIO N RELAY
-
f
-
-
*
KEY; KEY;
-
-
-
f
TO MAI N PO W ER
FUSE F2
FUSE F1
FUSE F3
120 V
CO N TROL TRA N SFORMER
SUMMER/OFF/ W I N TER S W ITCH*
SUPPLY FA N O V ERLOADS
SUPPLY FA N CO N TACTOR COIL 2
SPRAY AIR SUPPLY SOLE N OID
TERMI N AL LOCATED O N MAI N PA N EL
TERMI N AL LOCATED O N REMOTE STATIO N
FIELD W IRI N G
f f f 13
5
SUPPLY FA N AUXILIARY CO N TACT
SUPPLY FA N AIR FLO W S W ITCH
V OLUME AIR FLO W S W ITCH
BAKE CYCLE
AUXILIARY CO N TACT
3
f f
4
16
17
14
14
13
A
B
5
f f
f
1
1
W I N .
OFF
SUM.
f
f
f
f