SECTION TWO – Heater Installation
The heater can be used to heat either pools or spas. A
typical installation is shown above.
NNNNOOOOTTTTEEEE that the heater is downstream from the filter.
Also, the Chemical Feeder (Sanitizer) should be
installed as far downstream from the heater as possible.
Keep the number of elbows and fittings in the plumb-
ing to a minimum.
Install a chemical resistant, positive stop check valve
between the heater and the chemical feeder.
Pool/Spa Sizing
The Sta-Rite heater is available in three input ratings:
MMMMooooddddeeeellll
RRRRaaaattttiiiinnnngggg
• SR/SRC200NA, SR/SRC200LP 200,000 BTUs/Hr
• SR/SRC333NA, SR/SRC333LP 333,000 BTUs/Hr
• SR/SRC400NA, SR/SRC400LP 400,000 BTUs/Hr
• SR400HD
400,000 BTUs/Hr
Use the tables below to determine the correct model
size for a particular pool or spa.
2-2
Cool Water
In From Spa
2735 1296
From Filter Outlet
to Heater
Inlet
Warm Water
Out to Pool or Spa
Sanitizer
Corrosion Resistant,
Positive Seal
Check Valve
To Filter
Inlet
Cool Water
In From Pool
To Spa
To Pool
SYSTEM 3
™
Modular Media
Filter
Typical Installation
Figure 2-1: Typical Installation
Table 2-A: Maximum Pool Size in Sq. Ft. for a
Given Model Heater and a Given
Temperature Rise/24 Hr.
Table 2-B: Minutes For 30° F (11.4° C)
Temperature Rise
MODEL NUMBER
Temp.
SR400NA
Diff.
SR200NA
SR333NA
SR400LP
°F (C°)
SR200LP
SR333LP
SR400HD
15 (8.3)
400
700
900
20 (11.1)
350
550
700
25 (13.9)
250
450
550
30 (16.7)
200
350
450
35 (19.4)
200
300
400
MODEL NUMBER
Spa
SR400NA
Size
SR200NA
SR333NA
SR400LP
Gal.(L)
SR200LP
SR333LP
SR400HD
200 (757)
18
11
9
300 (1,136)
27
16
13
400 (1,514)
35
21
18
500 (1,893)
44
27
22
600 (2,271)
53
32
27
700 (2,650)
62
37
31
800 (3,028)
71
43
35
900 (3,407)
80
48
40
1,000 (3,785)
89
53
44
Recommended models for pools.
Recommended models for spas.
