
lp-673 Rev. 000 Rel. 001 Date 8.30.18
47
Condensation is slightly acidic (typically with a pH of 3 to 5) and must be piped with the correct materials. Never pipe the condensate using
steel, copper, brass or other materials that will be subject to corrosion. Plastic PVC or CPVC pipe are the only approved materials.
A condensate neutralizer, if required by local authorities, can be made up of lime crystals, marble or phosphate chips that will neutralize the
condensate. This may be done by the installer or you may purchase a condensate neutralizer from HTP (7450P-212).
2. The water heater is equipped with a ¾ female socket weld fitting connection that must be piped to a local drain. It is very important that
the condensate line is sloped downward away from the water heater to a suitable inside drain. If the condensate outlet on the appliance is
lower than the drain, you must use a condensate removal pump, available from HTP (554200). This pump is equipped with two leads that can
be connected to an alarm or another type of warning device to alert the user of a condensate overflow, which, if not corrected, could cause
property damage.
3. If a long horizontal run is used, it may be necessary to create a vent in the horizontal run to prevent a vacuum lock in the condensate line.
4. Do not expose the condensate to freezing temperatures.
5. It is very important you support the condensation line to assure proper drainage.
DHW Inlet (Rt) / Outlet Temperature
(St) Sensor
(7850P-015)
Exhaust Temperature (Eh) Sensor
(7850P-070)
HX (OP) Temperature Sensor
(7850P-081)
Temperature (
o
F)
Resistance (Ω)
Temperature (
o
F)
Resistance (Ω)
-4
62162
-4
28409
5
48440
5
22152
14
38045
14
17408
23
30107
23
13782
32
23998
32
10990
41
19261
41
8824
50
15562
50
7131
59
12655
59
5800
68
10353
68
4747
77
8520
77
3906
86
7051
86
3233
95
5867
95
2690
104
4908
104
2250
113
4125
113
1891
122
3485
122
1598
131
2957
131
1356
140
2520
140
1155
149
2157
149
989
158
1854
158
850
167
1600
167
733
176
1386
176
635
185
1205
185
552
194
1051
194
482
203
920
203
421
212
808
212
370
Table 33 - Temperature Sensor Resistance
Figure 48 - Flame Sight Glass
Part 11 - Installation Checklist
Before Installing
Yes
No
Is there enough space to ensure proper installation?
Does installation location allow for proper service clearances?
Are water and gas lines properly sized and set at proper pressures for the installation?
Have combustible materials been cleared from the installation location?
Is there a drain close to the water heater?