Tankless Water Heater; Indirect-Fired Water Heater; Safety Relief Valve; Controls - PEERLESS WV-DV Installation, Operation & Maintenance Manual

PIPING AND CONTROLS
B. TANKLESS WATER HEATER
Figure 3.3
Note: X-1019R, X-1020R and PP-1011R Coils installed in
WV-DV boilers have internal flow controls installed.
Do not use external flow controls with
these coils.
C. INDIRECT-FIRED WATER HEATER
1. If a water boiler is to be used in conjunction with an
indirect-fired water heater refer to Figure 3.4 for
typical piping. Also refer to additional instructions
supplied with tank.
Figure 3.4
6
DANGER
Install mixing valve in hot water supply piping. Water
temperature above 125°F can cause severe burns
instantly or death from scalds.
CAUTION
Pipe the discharge of the safety relief valve to
prevent injury in the event of pressure relief. Pipe the
discharge to a drain. Provide piping that is the same
size as the relief valve.
D. SAFETY RELIEF VALVE
1. Remove safety relief valve and 3/4" x 3" nipple from
parts bag. Install nipple and safety relief valve in top
or rear tapping. See Figure 8.1. If rear tapping is
used, installer must supply an elbow so that safety
relief valve is installed in vertical position.
E. CONTROLS
1. For complete information on servicing and
adjustment of controls, refer to the attached control
specification sheets.