76
Page
OUTPUT TEMPERATURE CHART
Chart is based on properly sized gas line.
540P model
100
(38)
105
(40)
110
(43)
115
(45)
120
(50)
125
(52)
130
(55)
135
(57)
140
(60)
40°F
(
4
℃)
6.3
5.8
5.4
5.0
4.7
4.4
4.2
4.0
3.8
50°F
(
10
℃)
7.6
6.9
6.3
5.8
5.4
5.0
4.7
4.4
4.2
60°F
(
16
℃)
9.5
8.4
7.6
6.9
6.3
5.8
5.4
5.0
4.7
70°F
(
21
℃)
10.0
10.0
9.5
8.4
7.6
6.9
6.3
5.8
5.4
0.0
2.0
4.0
6.0
8.0
10.0
12.0
O
ut
pu
t h
ot
w
at
er
G
PM
40°F
(
4
℃)
50°F
(
10
℃)
60°F
(
16
℃)
70°F
(
21
℃)
30
45
Set temp.
℉(℃)
Incoming temp.
℉(℃)
(L/M)
(23.9)
(22.0)
(20.4)
(19.1)
(17.9)
(16.8)
(15.9)
(15.1)
(14.3)
(28.6)
(26.0)
(23.9)
(22.0)
(20.4)
(19.1)
(17.9)
(16.8)
(15.9)
(35.8)
(31.8)
(28.6)
(26.0)
(23.9)
(22.0)
(20.4)
(19.1)
(17.9)
(37.9)
(37.9)
(35.8)
(31.8)
(28.6)
(26.0)
(23.9)
(22.0)
(20.4)
15
*When the set temperature is 130 °F (55 °C) or higher, maximum flow rate is limited to 8.0 GPM.
Output Temperature vs. GPM (Max. 10.0 GPM) with Various Inlet Water Temperature
Parts List
Owner's Guide
5M2051-1
2000536265
(REV. B)
Item #
Description
Part #
540P
(AT-H3P)
713 Switch wire with thermostat for Indoor model
for Outdoor model
N/A
N/A
EK631
EK636
714
715
716
717
Proportional gas valve wire
24V cables for Indoor model
for Outdoor model
Computer board cover
Cable clamp
100074657
N/A
N/A
100074375
N/A
EK167
EK632
EK638
EKK1M
EX13C
718
719
721
722
723
Exhaust thermistor for Indoor model
Remote fixing plate
Exhaust Hi-limit switch wire
Temperature controller for Indoor model
Fixing plate
100074316
100074644
100074659
100276680
N/A
EKH6E
EK152
EK180
EK639
EK629
724
725
726
Temperature remote controller
Pump fixing plate
Recirculation pump assembly
100276687
N/A
100276636
TM-RE43
EK619
EK620
727
728
729
Pump inlet pipe
Pump outlet pipe
Pump connection
100276638
100276639
100276676
EK622
EK623
EK626
730
731
732
PCB fixing plate
Return thermistor
Closing plug
N/A
100276681
100276683
EK627
EK640
EK642
733
734
735
Three way connection
Heater
Fastner "12.7"
100276686
100076326
100076400
EK643
EK469
EM190