ECR 075 97gb, Инструкция по установке, эксплуатации и обслуживанию, Страница: 14 / 80

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• Systems with automatic fill valves require back flow
prevention device.
• Install discharge piping from safety relief valve. See
figure 5-2.
• Use ¾" or larger pipe.
• Use pipe suitable for temperatures of 375°F (191°C)
or greater.
• Individual boiler discharge piping shall be independent
of other discharge piping.
• Size and arrange discharge piping to avoid reducing
safety relief valve relieving capacity below minimum
relief valve capacity stated on rating plate.
• Run pipe as short and straight as possible to location
protecting user from scalding and properly drain
piping.
• Install union, if used, close to safety relief valve outlet.
• Install elbow(s), if used, close to safety relief valve
outlet and downstream of union (if used).
• Terminate pipe with plain end (not threaded).
5.4 Trim Piping
• Supply and Return Piping
• Supply - Select either top, bottom or both.
• Return - Select either top, bottom, or both.
• Use second temperature pressure gauge when piping
top and bottom.
• Install brass plug(s) provided with boiler in unused
tapping(s). Use provided sealant.
• Temperature - Pressure Gauge. Install temperature
pressure gauge using nipple, bushing and tee provided
with boiler. See figure 5-3.
5.5 System Piping
• See Table 3 for basic system piping configurations.
• Systems with automatic fill valves require back flow
prevention device.
• Single boiler system. See figures 5-4, 5-5, 5-6, 5-7 for
general guidance. Additional considerations:
• Boiler control is designed for single central heating
pump. Installer responsible for integration of
multiple central heating pumps.
• Boiler control allows domestic hot water
prioritization. Function could be lost if central
heating pump not directly connected to control
system.
• Multiple boiler system. See figure 5-8 for general
guidance. Additional considerations:
• Control system requires equivalent water
temperatures entering each boiler to properly
sequence and adjust system supply temperature.
• Install multi boiler sensor kit. See "Parts, Kits &
Optional Accessories" manual for part number.
• Heating system with existing primary loop, close internal
primary loop ball valve.
• Heating system without existing primary loop, leave internal
primary loop ball valve open to use internal primary loop.
5 - HYDRONIC PIPING
FIGURE 5-3 Temperature Pressure Gauge Installation
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Temperature Pressure Gauge
shown at Optional Bottom
Supply Connection to Boiler
FIGURE 5-2 Safety Relief Valve Discharge Piping
Check Local Codes
For Maximum
Distance To Floor
WARNING
Burn and scald hazard. Safety relief valve could
discharge steam or hot water during operation.
Install discharge piping per these instructions.
!