PATH freewatt HDJ, Инструкция по установке, эксплуатации и обслуживанию, Страница: 24 / 68

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8.4 Design Tips
Install bottom of Hydronic HI Module at height of •
32” to 42” above fl oor elevation where HONDA MCHP
installed.
Maximum 10ft. length of ½” Onix coolant tubing
•
connecting Hydronic HI module and MCHP.
Install mixing valve if indirect hot water tank is
•
installed. Mixing valve will provide anti-scalding
protection and allow for summer operation of MCHP
unit. Review installation requirements supplied with
Indirect Water Tank.
8.5 Near Boiler Piping
Do not install Copper piping directly into aluminum •
boiler casting due to galvanic corrosion between
dissimilar metals. Two (2) dielectric isolation unions
shipped loose in boiler parts bag. Install dielectric
isolation unions at boiler supply and return line. Use of
dielectric unions is required. freewatt PLUS boiler
furnished with iron piping where necessary for supply
and return connections.
Confi gure near boiler piping in accordance with
•
freewatt PLUS Boiler’s Installation, Operation and
Maintenance Manual. Overall confi guration with MCHP
unit and heated zones must be in conformance with
Figure 8-2.
freewatt PLUS
• Boiler provided with 1 ¼” NPT return
and supply piping connections shown in Figure 2-2.
freewatt PLUS
• Boiler Installation, Operation and
Maintenance Manual includes directions on distribution
system requirements, including expansion tank, make-
up water, air separator, air vent and condensate drain
piping (pump).
Install 1 ¼” ball valves on supply and return legs of
•
boiler connection to allow for servicing of boiler or
circulators.
8.6 Honda MCHP & Hydronic HI Module
Install MCHP near piping in accordance with HONDA •
MCHP installation manual and instructions found in this
section.
Typical piping confi guration is shown in Figure 2-1,
•
shows MCHP connecting to hydronic HI Module.
Hydronic HI Module connects to hydronic water
distribution system.
Place hydronic HI module in location allowing MCHP to
•
connect with maximum 10 feet of ½” Onix tubing, while
also located vertically above MCHP unit (32” to 42”
above MCHP’s base level).
Onix tubing used to isolate vibrations from Honda
•
MCHP unit and is provided with installation kit.
NOTICE
Use only long life coolant supplied with freewatt
PLUS System. Use of any other coolant will void
warranty.
System will not operate properly and permanent
damage to Hydronic HI Module or HONDA MCHP
may occur if followings steps are not followed.
Following steps are required to install long life coolant (LLC)
tubing between Hydronic HI module and HONDA MCHP.
Figure 8-3 MCHP Coolant Loop Drain Tee (LLC-
Long Life Coolant Supplied with System)
8.7 HI Module coolant tubing:
Prepare rear connections (LLC In and LLC Out) of •
MCHP unit with pipe thread sealant. Install ½” NPT
brass street elbow onto drain fi tting before installing
1/2” NPT street elbow onto MCHP unit’s 1/2” MNPT LLC
Out fi tting. Install other 1/2” NPT brass elbow onto
MCHP unit’s LLC In fi tting. Install 1/2” NPT x 1/2” barb
fi ttings into drain fi tting and 1/2” NPT elbow. Point
fi ttings in direction of front of hydronic HI Module.
Figures 8-3, 8-4 and 8-5.
Long Life Coolant
• Out Tubing Installation [MCHP to
BPHX; Figure 8-5]:
Attach supplied 1/2” brass Tee to threaded heat •
exchanger fi tting located on bottom of HI Module as
shown. (Apply pipe thread compound)
Attach supplied 1/2” NPT x barb fi ttings to remaining
•
threads on brass Tee. (Apply pipe thread compound)
Attach supplied 12.5” length of tubing to front of
•
brass tee. Route cable through sheet metal as
shown. Attach stackable hose barb fi tting and insert
into HOT side of mixing valve. Secure fi ttings using
tubing clamps.
Install Onix™ tubing from top rear LLC connection
•
on MCHP, to hose barb on bottom of tee. Secure
8 - PLACING THE SYSTEM