Sta-Rite heaters are the most unique heaters on the market. Made from a
composite shell, the Max-E-Therm utilizes it's PMG combustion technology
to produce the highest efficiency (85%) in its class, while keeping NOx
emissions to a minimum. The unit is compact and weighs less than 125
pounds, and has a rotating top, making it the installers’ choice. LED
indicator lights and its 360 degrees of access to the internals make it
extremely service friendly.
All units are stocked as natural gas heaters. Request conversion kit if
propane is required.
Quick-change orifice allows easy conversion of gas sources.
DO NOT convert ASME models.
Natural Gas Heaters
H2O #
Manf. #
Description
2250109
SR200NA
200,000 BTU, Natural,
Electronic
2250112
SR333NA
333,000 BTU, Natural,
Electronic
2250115
SR400NA
400,000 BTU, Natural,
Electronic
2250119
460763
400,000 BTU, Natural,
Electronic, ASME
Specifications: Max-E-Therm Gas Heaters
BTU
Height
Width
W/Manifold
200,000
30.3"
21.15"
5"
333,000
30.3"
21.15"
5"
400,000
30.3"
21.15"
5"
400,000
30.3"
21.15"
5"
Natural Gas to Propane Conversion Kits
H2O #
Manf. #
Description
2250927
77707-1361
200,000 BTU Natural Gas to Propane Conversion Kit
2250922
77707-1351
333,000 BTU Natural Gas to Propane Conversion Kit
2250917
77707-1341
400,000 BTU Natural Gas to Propane Conversion Kit
Kit comes with
Instructions and Conversion Label
NOTE -
DO NOT convert ASME models
Sizing Charts
RECOMMENDED MAX-E-THERM MODEL
- SPA
Minutes for 30°F Temperature
Rise ( Heater Input in 1000 BTU/HR )
Spa Volume (Gallons)
SR200NA/LP
SR333NA/LP
SR400NA/LP
200
18
11
9
300
27
16
13
400
35
21
18
500
44
27
22
600
53
32
27
700
62
37
31
800
71
43
35
900
80
48
40
1000
89
53
44
NOTE: The chart is
based on a 30°F (17°C) temperature rise, discounting losses
and only based on heat required to raise temperature in minutes.
RECOMMENDED MAX-E-THERM MODEL
- POOL
°F Temperature
Change / 24 Hrs.
Heater Size
Heater Size
400
333
200
400
333
200
Pool Capacity in Gallons
Pool Surface Area in Sq. Ft. at 5.5'
Depth
5
194,766
162,143
97,383
4727
3935
2364
10
97,383
81,071
48,691
2364
1968
1182
15
64,922
54,048
32,461
1576
1312
788
20
48,691
40,536
24,346
1182
984
591
25
38,953
32,429
19,477
945
787
473
30
32,461
27,024
16,230
788
656
394
35
27,824
23,163
13,912
675
562
338
40
24,346
20,268
12,173
591
492
295
Vent
Accessories for Max-E-Therm Heaters - Sta-Rite
picture
unavailable
H2O #
Manf. #
Description
2250902
77707-0076
4" x 6" metal flue collar for
indoor vertical,
negative pressure venting
2250907
77707-0077
4" x 8" metal flue collar for
indoor vertical,
negative pressure venting
2250912
77707-0086
4" Heat Fab stainless adapter
for horizontal or vertical,
positive pressure venting
Replacement Heat
Exchangers for Max-E-Therm Gas Heaters
- Sta-Rite
The proper part name for a
heat
exchanger in a Max-E-Therm is called,
Tube Sheet Coil Assembly.
Exchangers come as a kit, which includes a Coil / Tubesheet Sealing O-Ring
Kit. NOTE: Exchanger replacements on ASME models require that you order the
exchanger and the manifold assemble all as one unit. Please contact
purchasing for information on special ordering these replacements.
Heat Exchanger Replacements for Max-E-Therm
H2O #
Manf. #
Description
9875045
77707-0232
Exchanger for 200,000 BTU models - prior to 1/12/2009
( also fits Pentair MasterTemp 175,000 and 200,000 BTU Models )
-
47058
Exchanger for 200,000 BTU models - after 1/12/2009
( also fits Pentair MasterTemp 175,000 and 200,000 BTU Models )
9875055
77707-0233
Exchanger for 333,000 BTU models - prior to 1/12/2009
( also fits Pentair MasterTemp 300,000 BTU Models )
-
474060
Exchanger for 333,000 BTU models - after 1/12/2009
( also fits Pentair MasterTemp 300,000 BTU Models )
9875060
77707-0234
Exchanger for 400,000 BTU models - prior to 1/12/2009
( also fits Pentair MasterTemp 400,000 BTU Models )
9875061
474061
Exchanger for 400,000 BTU models - after 1/12/2009
( also fits Pentair MasterTemp 400,000 BTU Models )
