Pool Heating - Rheem Raypak Hi Delta H Series Installation & Operating Instructions Manual

Soft* (3-4 grains per gallon)
Model
No.
∆T GPM
992C 29 60
1262C 29 72
1532C 29 86
1802C 29 102
2002C 29 112
2072C 31 117
2342C 33 120
∆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.

Pool Heating

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.
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
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
Medium (5-15 grains per gallon) Hard* (16+** grains per gallon)
∆P MTS SHL ∆T
2.7 2½ 5.2 17
4.4 2½ 7.9 19
7.1 2½ 11.9 22
10.9 2½ 17.4 26
13.9 2½ 21.6 26
15.1 2½ 23.4 27
17.8 2½ 26.5 30
Table H: Domestic Water Heater Flow Rate Requirements
normal swimming
GPM ∆P MTS SHL
98 7.3 2½ 13.3
115 11.3 2½ 19.4
120 13.7 2½ 22.5
120 15.1 2½ 23.9
132 19.0 2½ 29.5
132 19.0 2½ 29.5
132 21.4 2½ 31.8
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.
NOTE: The recommended setting for the outlet
thermostat is 110°F.
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
pool
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.
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.
22
∆T GPM ∆P MTS SHL
13 132 13.1 2½
16 132 14.8 2½
20 132 16.5 2½
23 132 18.3 2½
26 132 19.0 2½
27 132 19.0 2½
30 132 21.4 2½
23.6
25.3
27.0
28.7
29.5
29.5
31.8