22
pool. This arrangement permits operation of the heater
at a temperature range that has been optimized both
to avoid forming condensation on the heat exchanger
and to mitigate the formation of scale in the heat
exchanger tubes.
For a Pool heating application, always verify that the
Hi Delta unit has been ordered as a pool heater. To
avoid issues related to high temperatures not appropri-
ate to a pool application.
The Hi Delta pool heater is offered with bypass
options: manual H-Bypass, or automatic Cold Water
Run (CWR) bypass made of CPVC. These arrange-
ments both blend outlet water with the inlet water to
increase the inlet water temperature, thereby reducing
the likelihood of condensation forming on the heat
exchanger. The pump also serves to circulate water
through the heater from the main system piping.
To complete installation of the heater, the system sen-
sor (S3) must be installed in the return water line,
upstream of the heater. The supplied electronic oper-
ating control is configured to operate as the poolstat. A
separate sensor (S6) is shipped loose to be installed
in the system piping downstream of the heater outlet.
Table H: Domestic Water Heater Flow Rate Requirements
∆T = Temperature rise, °F
∆P = Pressure drop through heat exchanger, ft
SHL = System head loss, ft. Includes 50 eq ft of tubing each way (total 100 eq ft).
GPM = Gallons per minute, flow rate
MTS = Minimum tubing size
*Must utilize optional cupro-nickel tubes.
**If over 25 grains per gallon, a water softener/treatment system must be utilized.
Caution:
For scale free operation with "Hard Water" (16-25 grains per gallon of total hardness), the operating control must NOT be set
higher than 130 °F. For higher than 130 °F operation, a water softener/treatment system must be utilized.
Caution:
Water softened below 3 grains per gallon is known to be aggressive and corrosive.
Model
No.
Soft* (3-4 grains per gallon) Medium (5-15 grains per gallon) Hard* (16+** grains per gallon)
∆
T GPM
∆
P MTS SHL
∆
T GPM
∆
P
MTS SHL
∆
T GPM
∆
P MTS SHL
992C
29
60
2.7
2½
5.2
17
98
7.3
2½
13.3
13
132 13.1 2½ 23.6
1262C 29
72
4.4
2½
7.9
19
115 11.3
2½
19.4
16
132 14.8 2½ 25.3
1532C 29
86
7.1
2½ 11.9
22
120 13.7
2½
22.5
20
132 16.5 2½ 27.0
1802C 29
102 10.9 2½ 17.4
26
120 15.1
2½
23.9
23
132 18.3 2½ 28.7
2002C 29
112 13.9 2½ 21.6
26
132 19.0
2½
29.5
26
132 19.0 2½ 29.5
2072C 31
117 15.1 2½ 23.4
27
132 19.0
2½
29.5
27
132 19.0 2½ 29.5
2342C 33
120 17.8 2½ 26.5
30
132 21.4
2½
31.8
30
132 21.4 2½ 31.8
Pool Heating
All Raypak pool heaters are certified to ANSI Z21.56,
which is the nationally recognized standard for swim-
ming pools. Some heaters being sold in the
marketplace for heating commercial swimming pools
are often certified as hot water boilers or water
heaters. Regardless of which standard they are certi-
fied to, they are generally trimmed out either by the
manufacturer or the installer with controls that are suit-
able for maintaining normal swimming pool
temperatures and water conditions.
The P-992C-2342C models are configured to accom-
modate locating the outlet temperature controller in the
pool system piping that supplies the heated water to
the pool. This arrangement facilitates controlling or
limiting the temperature of the water supplied to the
pool. The heater must be plumbed in a primary/sec-
ondary arrangement, wherein only a portion of the
water flowing in the piping system is pulled off, heated,
and then returned to the system. The water coming out
of the heater is mixed with the filtered water in the
main pipe and thus tempered before returning to the
CAUTION:
Power to the heater should be
interlocked with the main system pump to make sure
the heater does not fire without the main system
pump in operation. Improper flow control can
damage the heater. Uncontrolled flow (too high) or
restricted flow (too low) can seriously damage the
heater. Follow these instructions to make sure your
heater is properly installed.
NOTE:
The recommended setting for the outlet
thermostat is 110°F.
WARNING:
To ensure safe operation of the Hi
Delta heater, all plumbing from the heater to the
main loop must be CPVC, copper or brass.
Summary of Contents for 992C
Page 54: ...54 Wiring Diagram Models 992C 1262C...
Page 55: ...55 Wiring Diagram Models 1532C 2342C...
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