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Table 25 -- Approximate Fluid Volume (gal.)
per 100 Ft of Pipe
PIPE
DIAMETER
(in.)
Copper
Rubber
Hose
Polyethylene
1
1.25
1.5
1
3/4 IPS SDR11
1 IPS SDR11
11/4 IPS SDR11
1/2 IPS SDR11
2 IPS SDR11
11/4 IPS SCH40
11/2 IPS SCH40
2 IPS SCH40
VOLUME
(gal.)
4.1
6.4
9.2
3.9
2.8
4.5
8.0
10.9
18.0
8.3
10.9
17.0
LEGEND
IPS
--
Internal
Pipe Size
SCH
--
Schedule
SDR
--
Standard
Dimensional
Ratio
NOTE: Volume
of heat exchanger
is approximately
1.0 gallon.
Table 26 -- Antifreeze Percentages by Volume
ANTIFREEZE
Methanol (%)
100% USP Food Grade
Propylene Glycol (%)
Ethenol
MINIMUM
TEMPERATURE
FOR
FREEZE
PROTECTION
(F)
10
15
20
25
25
21
16
10
38
30
22
15
29
25
20
14
Cooling
Tower/Boiler
Systems
E
These
systems
typically use a common loop telnperature
maintained
at 60 to
95 F. Carrier recommends
using a closed circuit evaporative
cooling tower with a secondary
heat exchanger
between the
tower and the water loop. If an open type cooling tower is used
continuously,
chemical treatlnent and filtering will be necessary.
Ground Coupled, Closed Loop and Plateframe
Heat Exchanger
Well Systems
E Thesesystemsal-
low
water temperatures
from 30 to 110 F. The external loop
field is divided up into 2 in. polyethylene
supply
and return
lines. Each line has valves connected
in such a way that upon
system start-up,
each line can be isolated
for flushing
using
only the system pumps. Locate air separation in the piping sys-
tem prior to the fluid re-entering
the loop field.
OPERATION
Power Up Mode
_
The unit will not operate until all the
inputs, terminals and safety controls are checked for normal
operation.
NOTE: The compressor will have a 5-minute anti-short cycle
upon power up.
Units with Aquazone
TM
Complete
C Control
STANDBY-
Y and W terminals
are not active in Standby
mode, however
the O and G terminals may be active, depend-
ing on the application.
The compressor
will be off.
COOLING
-- Y and O terminals are active in Cooling mode.
After power up, the first call to the compressor
will initiate a
5 to 80 second random
start delay and a 5-minute
anti-short
cycle protection
time delay. After both delays are complete, the
compressor
is energized.
NOTE:
On all subsequent
compressor
calls the random
start
delay is omitted.
HEATING
STAGE 1--Terminal
Y is active
in heating
stage 1. After power up, the first call to the compressor
will
initiate a 5 to 80 second random
start delay and a 5-minute
anti-short
cycle protection
time delay. After both delays are
complete, the compressor
is energized.
NOTE:
On all subsequent
compressor
calls the random
start
delay is omitted.
HEATING
STAGE 2 -- To enter Stage 2 mode, terminal W is
active (Y is already
active). Also, the G terminal
must be
active or the W terminal is disregarded.
The compressor
relay
will remain on and EH1 is immediately
turned on. EH2 will
turn on after 10 minutes of continual stage 2 demand.
NOTE: EH2 will not turn on (or if on, will turn ot_ ifFP1 tem-
perature is greater than 45 F and FP2 is greater than 110 E
LOCKOUT
MODE--The
status
LED
will
flash
fast
in
Lockout
mode and the compressor
relay will be turned
off
immediately.
Lockout mode can be "soft" reset via the Y input
or can be "hard" reset via the disconnect.
The last fault causing
the lockout is stored in memory and can be viewed by entering
test mode.
LOCKOUT WITH EMERGENCY HEAT -- While in Lock-
out mode, if W becomes active, then Emergency Heat mode
will occur.
EMERGENCY
HEAT -- In Emergency
Heat mode, terminal
W is active while terminal Y is not. Terminal G must be active
or the W terminal is disregarded.
EH1 is immediately
turned
on. EH2 will turn on after 5 minutes
of continual emergency
heat demand.
Units with Aquazone
Deluxe
D Control
EXTENDED
COMPRESSOR
OPERATION
MONITOR
--
If the compressor
has been on for 4 continuous
hours the con-
trol will automatically
turn off the compressor
relay and wait
the short cycle time protection
time. All appropriate
safeties,
including
the low-pressure
switch, will be monitored.
If all
operations
are normal
and the compressor
demand
is still
present, the control will turn the compressor
back on.
STANDBY/FAN
ONLY -- The compressor
will be off. The
Fan Enable, Fan Speed, and reversing valve (RV) relays will be
on if inputs are present. If there is a Fan 1 demand,
the Fan
Enable will ilmnediately
turn on. If there is a Fan 2 demand,
the Fan Enable and Fan Speed will ilmnediately
turn on.
NOTE: DIP switch 5 on S1 does not have an effect upon Fan 1
and Fan 2 outputs.
HEATING
STAGE 1 -- In Heating
Stage 1 mode, the Fan
Enable
and Compressor
relays
are turned
on ilnmediately.
Once the demand is removed, the relays are turned off and the
control reverts to Standby mode. If there is a master/slave
or
dual compressor
application,
all compressor
relays and related
functions will operate per their associated
DIP switch 2 setting
on S1.
HEATING
STAGE 2-
In Heating
Stage 2 mode, the Fan
Enable and Compressor
relays are remain on. The Fan Speed
relay is turned
on immediately
and turned
off immediately
once the demand
is removed.
The control reverts to Heating
Stage 1 mode. If there is a master/slave
or dual compressor
application,
all compressor
relays
and related
functions
will
operate per their associated DIP switch 2 setting on S1.
HEATING
STAGE 3-
In Heating
Stage 3 mode, the Fan
Enable, Fan Speed and Compressor
relays remain on. The EH1
output is turned on ilnmediately.
With continuing
Heat Stage 3
demand, EH2 will turn on after 10 minutes. EH1 and EH2 are
turned offimlnediately
when the Heating Stage 3 demand is re-
moved. The control reverts to Heating Stage 2 mode.
The output signal EH2 will be offifFP1
is greater than 45 F
AND FP2 (when shorted) is greater than 110 F during Heating
Stage 3 mode. This condition
will have a 30-second
recogni-
tion time. Also, during Heating Stage 3 mode, EH1, EH2, Fan
Enable, and Fan Speed will be ON ifG input is not active.
EMERGENCY
HEAT -- In Emergency
Heat mode, the Fan
Enable and Fan Speed relays are turned on. The EH1 output is
turned on immediately.
With continuing
Emergency
Heat de-
man& EH2 will turn on after 5 minutes.
Fan Enable and Fan
Speed relays are turned offafter
a 60-second delay. The control
reverts to Standby mode.
39
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