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PIPE SIZING FOR GAS CONNECTIONS
MAXIMUM EQUIVALENT PIPE LENGTH
3
Natural gas 1000 BTU/Ft .60 Specific Gravity @ 0.5" W.C. Pressure Drop
3
Propane Gas 2500 BTU/Ft 1.53 Specific Gravity @ 0.6" W.C. Pressure Drop
1/2"
1"
1-1/4"
N
P
N
P
N
514 -
10
15
35
65
624 -
-
10
25
45
100
724 -
-
-
20
35
824 -
-
-
15
25
PLUMBING FOR WATER CONNECTIONS
LOCATION
The heater requires water flow and positive pressure
to fire and operate properly. It must therefore be installed
downstream of the discharge side of the filter pump. A
typical installation is plumbed as follows:
1. The inlet side of the filter is plumbed directly to
the discharge side of the filter pump;
2. The outlet side of the filter is then plumbed to
the inlet of the heater; and
3. The outlet of the heater is plumbed to the return
line to the pool or spa. The pump, filter and
heater are thus plumbed in series.
Heater must be located so that any water leaks will not
damage the structure of adjacent area. High temperature
plastic pipe (CPVC) may be connected directly into the
heater if local codes permit and if controls operate the
pump for at least fifteen minutes after the heater is turned
off.
CAUTION: NEVER install PVC directly into heater.
Four feet of copper or high temperature pipe and two
elbows are required between the heater and the PVC
connections
1-1/2"
2"
P
N
P
N
P
150
130
360
500
-
95
250
340
-
80
75
180
260 600
60
55
130
185 480 500
When local codes permit the use of less than four feet
high temperature piping or two elbows, provisions should
be made to always shut the heater off a minimum of 15
minutes prior to pump shut down in order to carry away
residual heat and prevent damage to the low temperature
piping. A fireman switch included in the time clock may
2-1/2"
be used for this purpose with instruction not to override
N
P
this sequence manually. See wiring diagram section for
-
-
-
-
electrical hookup location of the fireman switch in the
-
-
electrical circuit.
-
NOTE: 1. When 2" piping is used into the heater, this
piping must be anchored (copper) or screwed into the
flange (metal) if operating pressures above 30 PSI are
encountered.
2. Any restrictions between heater outlet and
pool will void the warranty.
FLOW RATES
MODEL
514
624
724
824
COMPANION FLANGE CONNECTIONS
DO NOT use petroleum base assembly fluids (such as
Petroleum Jelly or lubricating oil). If assembly tube is
required use a silicone base such as Armoral etc.
The inlet/outlet header flange accepts a 2" copper
tube as a slip connection directly into the header. The
flange is also thread for a 2" copper male threaded
adapter.
Fig. #8129.0
12
PIPE SIZE MIN. GPM
2"
60
2"
60
2"
60
2"
60
MAX. GPM
120
120
120
120
Fig. # 8221.0
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