SECTION 17: E
LECTRICAL
101 of 147
17.
8
.7 Propane Switch Kit
The propane s
w
itch kit pro
v
ides the end
u
ser
w
ith the
ability to r
u
n the air handler on either nat
u
ral or
propane gas. When the end
u
ser
w
ants to s
w
itch
from nat
u
ral to propane gas, a s
w
itch (field
w
ired and
pro
v
ided by others)
w
ill open contacts po
w
ering the
mod
u
lating reg
u
lating
v
al
v
e. Po
w
er
w
ill be sent
thro
u
gh the propane s
w
itch kit
w
here the signal
w
ill
be red
u
ced and then sent to the mod
u
lating
reg
u
lating
v
al
v
e. This
w
ill ca
u
se the mod
u
lating
reg
u
lating
v
al
v
e to open less for the propane,
allo
w
ing for the same temperat
u
re rise.
17.
8
.
8
Auxiliary Relay
An a
u
xiliary relay may be added to an air handler for
either an interlock or a c
u
stomer defined p
u
rpose.
Refer to the option sheet s
u
pplied
w
ith the air handler
to indicate
w
hether the relay is
w
ired for an intended
p
u
rpose or left
u
n
w
ired for a f
u
t
u
re interface. Each
relay
w
ill be do
u
ble pole do
u
ble thro
w
(DPDT) type.
Maxim
u
m s
w
itching capacity on the normally open
contact is 8A, and for the booth light relay, P/N
80916.2, 15A.
17.
8
.9 Smoke Detector
A smoke detector interlock allo
w
s for the air handler
to operate based on signal inp
u
t from the fire alarm.
MODULATING
REGULATING
VALVE
THIS REPLACES THE MRV WIRING
PROPANE SWITCH
LOCATED ON THE MAIN DIAGRAM
ADJUSTMENTS:
1) MAKE NORMAL HIGH AND LOW FIRE ADJUSTMENTS WITH
SWITCH CLOSED AS OUTLINED IN THE MANUAL
2) OPEN SWITCH, REMOVE THE BRASS CAP FROM RHEOSTAT
AND ADJUST TO REDUCE HIGH FIRE SETTING, REPLACE CAP.
49
48
8 9
49A
NC C
PROVIDED
SWITCH FIELD
AND WIRED
Part Number
Description
Models
17854
Propane S
w
itch Kit
All Models
CR1
FAN ON INTERLOCK
4
2
BURNER ON INTERLOCK
CR1
12
2
NOT WIRED
BOOTH LIGHT ON
Part Number
Description
Models
80916
A
u
x Relay, Fan On
All Models
80916.1
A
u
x Relay, B
u
rner On
All Models
80916.2
A
u
x. Relay Booth Light On
All Models
80916.3
A
u
x Relay, Not Wired
All Models
1
1A
FROM 120V
3A BREAKER
AIR HANDLER TERMINALS 1
AND 1A TO BE WIRED TO
FIRE ALARM N/C CONTACTS
BY OTHERS
ALL OTHER WIRING TO BE
PROVIDED BY OTHERS
Part Number
Description
Models
25214K
Smoke Detector
All Models
Содержание 2005
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