Whirlpool Indirect-Fired Water Heater - Manual (Page 5)

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4. Peerless Partner(s) may be located adjacent to boiler to reduce piping heat loss or central to points of use to
reduce response time to fixtures.
a. Install indoors in an area not exposed to freezing temperatures. Do not install outdoors.
b. Position with adequate clearance for service and maintenance. Provide access to thermostat, temperature
and pressure relief valve, and drain valve.
c. Protect surrounding area and lower floors from damage due to leakage from temperature and pressure
relief valve, drain valve, boiler or domestic water piping, and tank. Locate water heater near a floor drain or
in a drain pan suitable for the capacity of the water heater.
d. Install on level surface. Water heater must be kept in vertical position.
5. Suggested equipment list. See PIPING for additional information.
a. Water Heater Thermostat: Provided.
b. Temperature and Pressure Relief Valve: Provided.
c. Brass Drain Valve: 1 per water heater.
d. Brass Tee’s: 2 per water heater.
e. Heat Exchanger to Boiler Piping: 1 inch nominal copper tubing and fittings. Circulator and flow control
valve, or zone valve.
1. General
a. All plumbing must be in accordance with
the requirements of the authority having
jurisdiction.
b. Use both thread tape and pipe dope on all
mechanical connections.
c. Zone valve (if used) and circulator must be
sized to provide minimum flow rate speci-
fied in Table 4. Use 1 inch nominal copper
tubing between boiler and Peerless Partner
heat exchanger. See Table 5 and Table 6 for
sizing. Point of emphasis: using a zone
valve without a full bore may cause high
pressure drop which will adversely affect
performance. Use extreme care when
selecting zone valve.
All piping must be adequately supported.
Allow for thermal expansion.
d. High temperatures will damage plastic jack-
et. Use heat shield when soldering piping
near tank.
Table 6: Friction Loss Allowance for Copper Fittings
[feet of straight tubing]
90° Elbow 1 4
45° Elbow 1 2
Tee, Run
1
/ 2 1
/ 2
Tee, Branch 3 5
90° Bend 2 –
180° Bend 2 –
Gate Valve – 1
Fitting Wrought Cast
Piping
Table 5: Friction Loss per 100 Feet of Tubing [feet]
Type K 3.6 4.8 9.3
Type L 3.1 4.1 8.1
Type M 2.7 3.6 7.0
Tubing Type
Flow Rate [gpm]
6 7 10
Table 4: Flow Specifications
Model No.
Recommended
Flow Rate
Heat Exchanger
Pressure Drop
Domestic Water
Connection Sizes
PP-30-LB 8 gpm 6.0 ft. 3/4 NPT
PP-40 10 gpm 7.9 ft. 3/4 NPT
PP-60 10 gpm 7.9 ft. 1 NPT
PP-80 12 gpm 9.1 ft. 1-1/2 NPT
PP-120 14 gpm 11.3 ft. 1-1/2 NPT
PP-40-DW 6 gpm 7.6 ft. 3/4 NPT
PP-60-DW 7 gpm 10.0 ft. 1 NPT
PP-80-DW 7 gpm 10.0 ft. 1-1/2 NPT
PP-120-DW 8 gpm 13.4 ft. 1-1/2 NPT