Pentair MasterTemp High Performance Heater ユーザーズマニュアル

MasterTemp’s easy-to-read 
controls make system 
operation and monitoring 
simple. Pool and spa 
temperatures can be  
pre-set and controlled  
with the push of a button. 
A digital display indicates 
the water temperature,  
and five LED lights give  
you system status and let 
you know if the heater 
needs service.

Easy to install or retrofit in even the tightest space — models  
from 200M to 400M BTUs — all measure 21L x 21W x 28H

Rotating digital display means more installation options  
and easier access to view operating information

Rustproof, tough composite exterior for long life

Available in natural gas and propane models.

 

Minutes for 30°F Temperature Rise (Heater Input in 1000 BTU/HR)

 

200 

18.0 

27.0 

35.0 

44.0 

53.0 

62.0 

71.0 

80.0 

89.0

  250/250HD  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

  400/400HD    9.0 

13.0 

18.0 

22.0 

27.0 

31.0 

35.0 

40.0 

44.0

Pool Sizing

*

Spa Sizing

*

Note: The chart is based on a 30°F (55.6°C) temperature rise, discounting losses and only based on heat required to 

raise temperature in minutes. Two-year limited warranty. See warranty for details.

Pool Capacity in Gallons

Pool Surface Area in Sq. Ft. at 5.5' Depth

5

10
15
20
25
30
35
40

97,383
48,691
32,461
24,346
19,477
16,230
13,912
12,173

121,729

60,864
40,576
30,433
24,346
20,288
17,390
15,216

146,075

73,037
48,692
36,519
29,216
24,345
20,868
18,260

194,766

97,383
64,922
48,691
38,953
32,461
27,824
24,346

2,364
1,182

788
591
473
394
338
295

2,955
1,478

985
739
591
493
423
369

3,546
1,773
1,182

887
710
591
507
443

4,727
2,364
1,576
1,182

945
788
675
591

*

ASME models available. See your Pentair Water Pool and Spa representative for details.