Part 6 - Install The Condensate Drain; Part 7 - Gas Piping; Gas Pipe Sizing Tables; Gas Pipe Sizing - Westinghouse WGRT 150 Series Installation Start-Up Maintenance Parts

PART 6 – INSTALL THE CONDENSATE DRAIN
1. Due to its efficient design, the water heater produces condensate (water) as a
normal by-product. This condensate is acidic, with a pH level between 3 and 4.
This condensate must be drained away from the water heater and disposed in
accordance with all local regulations.
2. Use corrosion-resistant materials to drain condensate. Use the included
flexible plastic hose or ½" PVC and CPVC drain pipe complying with ASTM
D1785, F441, or D2665 may be used. Cement must comply with ASTM D2564
for PVC or F493 for CPVC. For Canadian applications, use CSA or ULC certified
PVC or CPVC pipe, fittings, and cement.
3. Local building codes may require an in-line neutralizer (1) to be installed (not
included) to treat the condensate. Follow all the installation instructions included
with the neutralizer. If a neutralizer is installed, periodic replacement of the
limestone (or neutralizing agent) will be required. The rate of depletion of the
limestone varies with usage of the water heater. During the first year of water
heater operation, check the neutralizer every few months for depletion.
4. Route the drain line to a nearby floor drain (2), laundry tub (3), or condensate pump (4).
NOTE: If a nearby laundry tub is used as a disposal for waste water from the washing machine, draining the condensate into this tub
allows the soapy water discharge to neutralize the acidic condensate.
5. An error will appear on the water heater display if condensate line is blocked. The water heater will not operate with a blocked
condensate line. It is extremely important to have this condition repaired by a qualified service technician.
PART 7 – GAS PIPING
To avoid serious injury or death, the gas line installation and the gas line inlet pressure test must be done by a licensed professional.
Always match the water heater with the type of gas supplied to the unit (natural gas or LP gas). This water heater must be converted
into propane operation unless specifically manufactured for use with propane. Follow Gas Conversion Manual instructions (separate
document). Propane ready water heaters have the suffix "LP" after the model serial number.
Make sure the gas line pressures are within normal limits. Pressures outside normal limits can result in poor performance and
hazardous operating conditions.
This water heater must be converted into propane operation unless it is specifically manufactured to operate on propane. Propane-
ready water heaters have the suffix "LP" after the model serial number. Failure to ensure the water heater is set to operate on the
provided gas supply could result in property damage, personal injury, or death.
A. GAS PIPE SIZING TABLES

1. Gas Pipe Sizing

This information is for reference use only. Refer to gas pipe manufacturer specifications for actual delivery capacity. The DOE standard
for Natural Gas is 1100 BTU/ft

2. Natural Gas Pipe Sizing

The following tables list maximum capacity of pipe in cubic feet of gas per hour for gas pressures of 11" or less and a pressure drop of
0.5 inches water column, based on a 0.60 specific gravity for natural gas.
Maximum Natural Gas Delivery Capacity – Length of Corrugated Stainless Steel Pipe in Feet
Pipe Size
10
½"
82
¾"
192
1"
383
1 ¼"
639
1 ½"
1260
2"
2930
Table 15 – Natural Gas Delivery Capacity – Corrugated Stainless Steel Pipe – Refer to ANSI Z223.1 – National Fuel Gas Code,
Latest Edition
FIRE AND/OR EXPLOSION HAZARD
3
. Contact the local gas supplier for actual BTU/ft
Cubic Feet per Hour (0.60 Specific Gravity, 0.5 WC Pressure Drop)
20 30
58 47
137 112
269 218
456 374
888 723
2080 1700
Figure 18 – Condensate Detail
3
rating.
40 50 60
41 37 37
97 87 80
188 168 153
325 292 267
625 559 509
1470 1320 1200
80 100 150
29 26 20
69 62 48
132 118 91
232 208 171
440 393 320
1040 933 762
WHL-004 REV. 5.26.17
33
200
18
44
82
148
277
661