Water Piping And Controls; Boiler Supply And Return - PEERLESS GM Installation, Operation & Maintenance Manual

3. WATER PIPING AND CONTROLS

Design piping and size circulator(s) to suit the system. Refer to
the I=B=R - Residential Hydronic Heating Installation/Design
Guide and the PB Heat Water Survey for guidance.
A. BOILER SUPPLY AND RETURN
Install boiler to protect the gas ignition system
components from water (dripping, spraying, etc.) during
appliance operation and service (circulator replacement,
condensate trap, control replacements, etc.).
1. Remove shipping nipple from supply tapping.
2. Install temperature-pressure gage with tee in
supply tapping. Nipple, tee, bushing and gage are
located in trim carton. See Figure 3.1.
3. Install drain valve. Remove jacket front panel.
Install drain valve with tee in return tapping. Nipple,
tee, bushing and drain valve are located in trim
carton. See Figure 3.3. Tee may be installed with run
in either horizontal or vertical orientation.
4. Install supply piping, return piping and circulator.
See Figure 3.2.
a. If boiler is installed above radiation level, provide
a low water cutoff device in the supply piping
above boiler. See Figure 3.2.
Figure 3.2: Typical Supply and Return Piping
WATER PIPING AND CONTROLS
Figure 3.1: Temperature-Pressure Gage Installation
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