MasterTemp™ is a powerful electronic gas heater placed in a space saving
enclosure. All four models measure the same cabinet size, ( 21 L x 21W x 28
H ) less vent and water connections.
Until you see this heater up close, you won't believe how
space saving this heater really is. Heater is
power vented and water connections are unionized for easy installation.
Controls rotate to 3 positions so there’s no need to reverse the header.
All units are stocked as natural gas heaters. Request conversion kit if
propane is required. Quick-change orifice allows easy conversion of gas
sources. Propane heaters from the factory are available as a
special order item.
DO NOT convert ASME models.
Natural Gas Heaters
H2O #
Manf. #
Description
2240109
460730
200,000
BTU, Natural,
Electronic
2240119
460732
250,000 BTU, Natural,
Electronic
2240121
460771
250,000 BTU, Natural,
Electronic, ASME
2240129
460734
300,000 BTU, Natural,
Electronic
2240139
460736
400,000 BTU, Natural,
Electronic
2240141
460775
400,000 BTU, Natural,
Electronic, ASME
Propane Gas
Heaters
H2O #
Manf. #
Description
2240114
460731
200,000 BTU, *Propane,
Electronic
2240123
460733
250,000 BTU, *Propane,
Electronic
2240133
460735
300,000 BTU, *Propane,
Electronic
2240144
460737
400,000 BTU, *Propane,
Electronic,
2240147
460776
400,000 BTU, *Propane,
Electronic,
ASME
*Note - Propane Models are
Special Order Only
Natural Gas to Propane Conversion Kits
H2O #
Manf. #
Description
special order
77707-1461
200,000 BTU,
Natural Gas to Propane Conversion Kit
special order
460741
250,000 BTU,
Natural Gas to Propane Conversion Kit
special order
460755
300,000 BTU,
Natural Gas to Propane Conversion Kit
special order
77707-1441
400,000 BTU,
Natural Gas to Propane Conversion Kit - H2O# 2250939
Kit comes with Instructions
and Conversion Label
NOTE -
DO NOT convert ASME models
Features:
Controls rotate to 3 positions so there’s no need to reverse the header. Heater is power vented and
water connections are unionized for easy installation. Optional Quick-change orifice
allows easy conversion of gas sources Compact design (21 L x 21W x 28
H ) less vent and water connections. Certified for low NOx emissions Superior “best-in-class”
energy-efficiency Built-in carrying handles for
easy transport Top-mounted, large format
digital display for easy viewing Tough, rustproof exterior
handles the heat and weathers the elements User-friendly indicator lights
make system operation and monitoring a snap Safe operation assured through
a series of features, including:
Water pressure switch High limit switches Manual gas shut-off when
service is required Stack flue sensor
Pool Sizing
°F
Temperature
Change/24 Hrs
Heater Size
Heater Size
Model
200
Model
250
Model
300
Model
400
Model
200
Model
250
Model
300
Model
400
Pool
Capacity in Gallons
Pool
Surface Area in Sq Ft. at 5.5 ft Depth
5
97,383
121,729
146,075
194,766
2,364
2,955
3,546
4,727
10
48,691
60,864
73,037
97,383
1,182
1,478
1,773
2,364
15
32,461
40,576
48,692
64,922
788
985
1,182
1,576
20
24,346
30,433
36,519
48,691
591
739
887
1,182
25
19,477
24,346
29,216
38,953
473
591
710
945
30
16,230
20,288
24,345
32,461
394
493
591
788
35
13,912
17,390
20,868
27,824
338
423
507
675
40
12,173
15,216
18,260
24,346
295
369
443
591
Spa Sizing
Spa Volume in Gallons
200
300
400
500
600
700
800
900
1,000
Model
Minutes for 30° F
Temperature Rise ( Heater Input at 1000 BTU per Hour )
200
18.0
27.0
35.0
44.0
53.0
62.0
71.0
80.0
89.0
250
15.8
23.5
30.8
38.5
46.5
54.3
62.0
70.0
77.8
300
13.5
20.0
26.5
33.0
40.0
46.5
53.0
60.0
66.5
400
9.0
13.0
18.0
22.0
27.0
31.0
35.0
40.0
44.0
Note: This chart is
based on a 30° F (-1°C) temperature rise,
discounting loses and only based on heat required to raise temperature
in minutes.
Vent Accessories for MasterTemp
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 MasterTemp Gas Heaters -
Pentair
The proper part name for a
heat
exchanger in a MasterTemp 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 MasterTemp
H2O #
Manf. #
Description
9875045
77707-0232
Exchanger for 175,000 and 200,000 BTU models - prior to 1/12/2009
( also fits Sta-Rite Max-E-Therm 200,000 BTU Models )
Includes Coil / Tubesheet Sealing O-Ring Kit
-
474058
Exchanger for 175,000 and 200,000 BTU models -after 1/12/2009
( also fits Sta-Rite Max-E-Therm 200,000 BTU Models )
Includes Coil / Tubesheet Sealing O-Ring Kit
9875050
460747
Exchanger for 250,000 BTU models - prior to 1/12/2009
Includes Coil / Tubesheet Sealing O-Ring Kit
-
474059
Exchanger for 250,000 BTU models - after 1/12/2009
Includes Coil / Tubesheet Sealing O-Ring Kit
9875055
77707-0233
Exchanger for 300,000 BTU models - prior to 1/12/2009
( also fits Sta-Rite Max-E-Therm 333,000 BTU Models )
Includes Coil / Tubesheet Sealing O-Ring Kit
-
474060
Exchanger for 300,000 BTU models - after 1/12/2009
( also fits Sta-Rite Max-E-Therm 333,000 BTU Models )
Includes Coil / Tubesheet Sealing O-Ring Kit
9875060
77707-0234
Exchanger for 400,000 BTU models - prior to 1/12/2009
( also fits Sta-Rite Max-E-Therm 400,000 BTU Models )
Includes Coil / Tubesheet Sealing O-Ring Kit
9875061
474061
Exchanger for 400,000 BTU models - after
1/12/2009
( also fits Sta-Rite Max-E-Therm 400,000 BTU Models )
Includes Coil / Tubesheet Sealing O-Ring Kit
'HD' Series models are
not listed
Misc Item
H2O #
Manf. #
Description
9875065
77707-0119
Coil
/ Tubesheet Sealing O-Ring Kit which is included with exchangers
listed above. Kit has 12 Sealing O-Rings which is amount required for
the Mastertemp 400 model. Kit will work on all other smaller models.
Controls rotate to 3 positions so there’s no need to reverse the header.
Water pressure switch
