heat-timer ETV Platinum Plus, Инструкция по установке и эксплуатации

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059305-00 Rev. D
Heat-Timer Corp.
General Piping Guidelines
The following guidelines must be observed when piping the system.
1. All piping, including the piping of the ETV valve body, must meet or exceed local, state, and/or
federal guidelines, codes, and regulations.
2. Support all piping using hangers. DO NOT support piping by the unit or its components.
3. Use isolation valves (as shown in Figure 2) to isolate system components.
4. Use unions (as shown in Figure 2) to allow for servicing and, if required, removal of the ETV valve and
sensors.
5. Include drain valves (as shown in Figure 2) to assist in servicing of the ETV valve and sensors.
Figure 2:
Piping Guideline
s
Sensor Probe Locations
Sensor probes must be installed within the flow of water in the pipe (see Figure 2). When possible, use a
tee fitting rather than an elbow fitting where the piping changes direction within the allowable sensor
placement distance from the valve. The sensor probe is then placed in the run of the tee fitting as shown
as the System Sensor Probe in Figure 2.
When installing the probe sensor in a tee fitting, perpendicular to a run of piping, the tip of the probe
sensor should be position at the centerline of the piping (see optional HOT or COLD probe sensor in Figure
2). This may require a nipple and coupling in addition to the tee fitting.
Refer To “ETV Platinum Plus Inputs” on page 5 for more information.
TMC Safety Valve Piping
The optional TMC Safety Valve is typically piped between the hot water source (a storage tank or
boiler coil) and the Hot inlet of the ETV valve. For an optional TMC Safety valve location, refer to
“Piping Diagrams” on page
30
.
12 ETV Platinum Plus Installation and Operation Manual