Heat Pump Unit Water Piping - ECO2 Systems SANCO2 GS4-45HPC-D Installation Manual

Heat Pump Unit Water piping

Heat Pump Unit Water piping
ALL PIPING BETWEEN HEAT PUMP & TANK SHOULD BE ½" NO EXCEPTIONS ALL PIPING BETWEEN HEAT PUMP & TANK SHOULD BE ½" NO EXCEPTIONS
Connect the heat pump unit COLD supply to the tank unit fitting marked Cold Supply. – Connect the heat pump unit COLD supply to the tank unit fitting marked Cold Supply. –
 
½" NPT Connection (Certain early units may use ½" BSP connections). ½" NPT Connection (Certain early units may use ½" BSP connections).
Connect the heat pump unit HOT return to the tank unit fitting marked Hot Return – ½" Connect the heat pump unit HOT return to the tank unit fitting marked Hot Return – ½"
 
NPT Connection (Certain early units may use ½" BSP connections). NPT Connection (Certain early units may use ½" BSP connections).
Connect the mains water supply to the lower fitting on the tank unit marked Cold Water Connect the mains water supply to the lower fitting on the tank unit marked Cold Water
 
Inlet. Inlet.
Connect the hot water supply pipe to the top of the tank unit marked Hot Water Outlet. Connect the hot water supply pipe to the top of the tank unit marked Hot Water Outlet.
 
Install the PR valve to the fitting on the tank unit marked PR valve, pipe from PR valve Install the PR valve to the fitting on the tank unit marked PR valve, pipe from PR valve Install the TPR valve to the fitting on the tank unit marked TPR valve, pipe from TPR
 
valve directly to a Building drain; do not install any shut off valve between TPR valve
directly to a Building drain; do not install any shut off valve between PR valve and directly to a Building drain; do not install any shut off valve between PR valve and
and Building drain.
Building drain. Building drain.
Run water through the pipe(s) to remove any debris inside before connecting the Run water through the pipe(s) to remove any debris inside before connecting the
 
pipe(s). pipe(s).
After all the piping connections are completed, run water through the system. After all the piping connections are completed, run water through the system.
 
Bleed the air from the system according to the instructions below on Page 17.
Remove the air from the system according to the instructions below on Page 15. Remove the air from the system according to the instructions below on Page 15.
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Make sure all the necessary devices are mounted to the pipes as shown in diagram.
Make sure all the necessary devices are mounted to the pipes as shown in diagram. Make sure all the necessary devices are mounted to the pipes as shown in diagram.
 
If the heat pump unit piping is kinked or clogged or the air inside was not bled during
If the heat pump unit piping is kinked or clogged or the air inside was not removed If the heat pump unit piping is kinked or clogged or the air inside was not removed
the test operation, temperature of the supplied hot water may become inconsistent.
during the test operation, temperature of the supplied hot water may become during the test operation, temperature of the supplied hot water may become
inconsistent. inconsistent.
Drain elbow is not included with GS4-45HPC-D.
Figure 5: Required System piping (Typical System piping) Figure 6: System piping (Typical System piping) Figure 6: System piping (Typical System piping)
GS4-45HPC & GS4-45HPC-D HEAT PUMP
Notes :
GS4 Heat Pump Isolation Valves shown in
typical positions adjacent to the GS4 unit
Union type connections and Isolation valves
recommended for ease of installation and service
Condensate drain line from base of Heat Pump
not shown, pipe to drain or other location in
accordance with local codes
Tank Temperature sensor connecting Tank
to Heat Pump not shown
Piping between Tank and Heat Pump
66ft Maximum length, 23ft Maximum vertical separation
To/from bottom of Tank to bottom of Heat Pump
No more than 6 x Elbows/Bends
Insulate ALL piping external to the building
with minimum 3/4" Closed Cell insulation
Check coldest expected ambient temperature
to determine if Trace Heat Kit FG2-6L is required
ECO-FPVKT-SMTW Power Outage kit also available
Cold Water Inlet should be regulated to below 95 Psi
Piping
WATER
. (Use / " BSP to
1
2
HOT WATER
. (Use / " BSP to /
1 1
2 2
HEAT
1/2"
PUMP
Hot Out
HEAT
PUMP
1/2"
Cold In
Cold Water Inlet from Building
Sanden Heat Pump – Installation Manual Sanden Heat Pump – Installation Manual
Drg # :ECO2-GSHP-001 Drawn : JLM
SANCO Heat Pump – Installation Manual
2
/ " NPT connection adapter.)
1
2
" NPT connection adapter.)
Isolation Valves
to allow service
of the GS4 unit
DHW STORAGE
1/2"
TANK
DHW HOT
HOT
OUT
HP to
TANK
Set MANDATORY Anti Scald valve to
PTRV
120°F or code required temperature
PIPE to
DRAIN
Optional Cold Water Expansion Tank can
be installed on Cold Water Line before Tank
connection either for code compliance or
where Backflow prevention valves prevent
expansion due to water heating & potential
for PTRV valve to open is created
Expansion
DHW
COLD
1/2"
COLD
TANK
IN
to HP
Title : SANCO2 Heat Pump unit & Storage Tank Standard Installation
11/19/2019 Rev : 03 Unit Mod 08/2022
Page 9 of 40 Page 9 of 40
Page 9 of 44
Anti Scald
Mixed Outlet to
Valve Supplied
Building/Home
with System
MANDATORY
Cold Water
Hot Water
to Anti Scald
to Anti Scald
Valve Valve
Tank
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