Piping

PIPING

Piping Symbol Legend pressure reducing valve

circulator (w/ isolation flanges) circulator w/ integral flow check

diff. pressure bypass

gate valve 3-way thermostatic

globe valve ball valve

pressure gauge

swing-check valve

Munchkin heater

4-way motorized mixing valve

flow-check valve spring-loaded check valve


hose bib / boiler drain pressure relief valve P&T relief valve

TRV (straight)

backflow preventer TRV angle

float -type air vent union

circuit setter

manual 3-way valve

zone valve

T/P

temperature / pressure gauge

heat exchanger

air separator

diaphragm-type expansion tank

Fig. 8-1 18

radiant manifold

Super Stor indirect DHW tank

PIPING

Standard Munchkin heater Traditional piping (zoning with valves) Space heating mode

Drawing 1A

zone valves

make-up water

P1 flow bypass valve

purging valves

V1 OFF

anti-scald mixing valve

T/P

Munchkin heater


NOTES: 1.

2.

3. 4. 5. 6. 7. 8.

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. Adjust flow bypass valve for the following minimum boiler flow rates in any operating mode: Munchkin model 80M: 3 gpm Munchkin model 140M: 5 gpm Munchkin model 199M: 7 gpm The minimum pipe size for connecting a Super Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater is 1.25 inches. All pumps are shown with isolation flanges. The alternative is standard flanges with full port ball valves. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119¼F. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown.

Fig. 5-2 22

PIPING

Standard Munchkin heater Traditional piping (zoning with valves) Domestic water heating mode

Drawing 1B

zone valves F F O

make-up water

F F O

F F O

F F O

P1 flow bypass valve

purging valves

V1 anti-scald mixing valve

T/P

Munchkin heater


NOTES: 1.

2.

3. 4. 5. 6. 7. 8.

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. Adjust flow bypass valve for the following minimum boiler flow rates in any operating mode: Munchkin model 80M: 3 gpm Munchkin model 140M: 5 gpm Munchkin model 199M: 7 gpm The minimum pipe size for connecting a Super Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater is 1.25 inches. All pumps are shown with isolation flanges. The alternative is standard flanges with full port ball valves. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119¼F. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown.

Fig. 5-3 23

PIPING

Standard Munchkin heater Traditional piping (zoning with circulators) Space heating Mode

Drawing 1C

space heating zone circuit

zone circulators make-up water

zone purging valves

closely spaced tees

P1

P2

T/P

Munchkin heater


NOTES: This drawing is meant to show system piping concept only. 1. Installer is responsible for all equipment & detailing required by local codes. 2. All closely spaced tees shall be within 4 pipe diameter center to center spacing. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and 3. downstream of all closely spaced tees. The ninimum pipe size for connecting a Super Stor water heater is 1 inch. 4. 5. The minimum pipe size for connecting a Munchkin heater shall be 1.25 inches. All pumps are shown with isolation flanges. The alternative is standard flanges 6. with full port ball valves for isolation. The anti-scald mixing valve shown on the domestic water heater is optional. 7. 8. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown. 9.

Fig. 5-4 24

PIPING

Standard Munchkin heater Preferred piping (zoning with circulators) Domestic water heating Mode

Drawing 1D



closely spaced tees

purging valves


P1

P2

T/P

Munchkin heater


NOTES: 1.

2. 3. 4. 5. 6. 7. 8. 9.

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. All closely spaced tees shall be within 4 pipe diameter center to center spacing. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees. The minimum pipe size for connecting a Super Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater shall be 1.25 inches. All pumps are shown with isolation flanges. The alternative is standard flanges with full port ball valves. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119¼F. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown.

Fig. 5-5 25

PIPING

Standard Munchkin heater Preferred piping (zoning with valves) Space heating mode

Drawing 2A

zone valves

make-up water

P2 closely spaced tees

differential pressure bypass valve

purging valves

V1 anti-scald mixing valve

P1

T/P

Munchkin heater


NOTES: 1.

2. 3. 4. 5. 6. 7. 8. 9.

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. Adjust differential pressure bypass valve to eliminate any flow velocity noise when zone with highest pressure drop operates by itself. The minimum pipe size for connecting a Super Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater is 1.25 inches. All pumps are shown with isolation flanges. The alternative is standard flanges with full port ball valves. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119¼F. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees.

Fig. 5-6 26

PIPING

Standard Munchkin heater Preferred piping (zoning with valves) Domestic water heating mode

Drawing 2B

zone valves F F O

make-up water

F F O

F F O

F F O

P2 closely spaced tees


V1

purging valves


P1

T/P

Munchkin heater


NOTES: 1.

2. 3. 4. 5. 6. 7. 8. 9.

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. Adjust differential pressure bypass valve to eliminate any flow velocity noise when zone with highest pressure drop operates by itself. The minimum pipe size for connecting a Super Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater is 1.25 inches. All pumps are shown with isolation flanges. The alternative is standard flanges with full port ball valves. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119¼F. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees.

Fig. 5-7 27

PIPING

Standard Munchkin heater Preferred piping (zoning with circulators) Space heating mode

Drawing 2C



closely spaced tees

purging valves anti-scald mixing valve

P2

P1

T/P

Munchkin heater


NOTES: 1.

2. 3. 4. 5. 6. 7. 8. 9.


Fig. 5-8 28

PIPING

Standard Munchkin heater Preferred piping (zoning with circulators) Domestic water heating mode

Drawing 2D



closely spaced tees

purging valves


P2

P1

T/P

Munchkin heater


NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9.


Fig. 5-9 29

PIPING

Standard Munchkin heater Preferred piping (multiple heaters / zoning with circulators) Space heating mode

Drawing 2E



closely spaced tees

purging valves


P2 PB1

T/P

PB2

T/P

Munchkin heater

Munchkin heater


NOTES: 1.

2. 3. 4. 5. 6. 7. 8. 9.


Fig. 5-10 30

PIPING

Piping Symbol Legend pressure reducing valve

circulator (w/ isolation flanges) circulator w/ integral flow check

diff. pressure bypass

gate valve 3-way thermostatic

globe valve ball valve

pressure gauge

swing-check valve

Munchkin heater


flow-check valve spring-loaded check valve


hose bib / boiler drain pressure relief valve P&T relief valve

TRV (straight)

backflow preventer TRV angle

float -type air vent union

circuit setter

manual 3-way valve

zone valve

T/P

temperature / pressure gauge

heat exchanger

air separator

diaphragm-type expansion tank

Fig. 8-1 18

radiant manifold


PIPING

Munchkin VISION 1 system (zoning with valves) Space heating mode

Drawing 3A

zone valves

high limit safety

make-up water


e g r u p

purge


P1 DHW temperature sensor

outdoor temperature sensor

OFF T/P

P2 purge Super Stor indirect DHW tank

thermal trap (w/ drain plug)

Munchkin heater

NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. All closely spaced tees shall be within 4 pipe diameter center to center spacing. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees. The minimum pipe size for connecting a Super Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater shall be 1.25 inches. All pumps are shown with isolation flanges and integral flow check valves. The alternative is standard flanges with full port ball valves and a separate flow check valve. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119 F. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown. Adjust differential pressure bypass valve to eliminate any flow velocity noise when zone with highest pressure drop operates by itself.

Fig. 8-2 19

PIPING

Munchkin VISION 1 system (zoning with valves) Domestic water heating mode

Drawing 3B

zone valves

high limit safety OFF

make-up water


e g r u p

purge


OFF DHW temperature sensor

P1


T/P



Munchkin heater

NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

Fig. 8-3 20

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. All closely spaced tees shall be within 4 pipe diameter center to center spacing. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees. The minimum pipe size for connecting a Super Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater shall be 1.25 inches. All pumps are shown with isolation flanges and integral flow check valves. The alternative is standard flanges with full port ball valves and a separate flow check valve. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119 F. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown. Adjust differential pressure bypass valve to eliminate any flow velocity noise when zone with highest pressure drop operates by itself.

PIPING

Munchkin VISION 1 system (zoning with valves) Space heating mode (w/ submixing)

Drawing 3C

3-way (manually-set) mixing valve vent

low temperature manifold station

air handler

high limit safety

purge e g r u p

make-up water


balancing valve


DHW temperature sensor

P1


OFF T/P



Munchkin heater

NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.

This drawing is meant to show s ystem piping concept only. Installer is responsible for all equipment & detailing required by local codes. All closely spaced tees shall be within 4 pipe diameter center to center spacing. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees. The minimum pipe size for connecting a Super Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater shall be 1.25 inches. All pumps are shown with isolation flanges and integral flow check valves. The alternative is standard flanges with full port ball valves and a separate flow check valve. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119 F. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown. Adjust differential pressure bypass valve to eliminate any flow velocity noise when zone with highest pressure drop operates by itself. Adjust 3-way manually-set mixing valve to yield proper supply temperature to lower temperature load.

Fig. 8-4 21

PIPING

Munchkin VISION 1 system (zoning with circulators) Space heating mode

Drawing 4A

make-up water zone circulators high limit safety

closely spaced tees e g r u p

purge



P1


OFF T/P



Munchkin heater

NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9.

Fig. 8-5 22

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. All closely spaced tees shall be within 4 pipe diameter center to center spacing. A minimum of 6 pipe diameters of straight pipe shall be installed upstream a nd downstream of all closely spaced tees. The minimum pipe size for connecting a Super Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater shall be 1.25 inches. All pumps are shown with isolation flanges and integral flow check valves. The alternative is standard flanges with full port ball valves and a separate flow check valve. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119 F. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown.

PIPING

Munchkin VISION 1 system (zoning with circulators) Domestic water heating mode

Drawing 4B

make-up water zone circulators high limit safety

closely spaced tees e g r u p

purge



P1


T/P



Munchkin heater

NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9.

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. All closely spaced tees shall be within 4 pipe diameter center to center spacing. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees. The minimum pipe size for connecting a Sup er Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater shall be 1.25 inches. All pumps are shown with isolation flanges and integral flow check valves. The alternative is standard flanges with full port ball valves and a separate flow check valve. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119 F. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown.

Fig. 8-6 23

PIPING

Munchkin VISION 1 system (zoning with circulators) Space heating mode (w/ submixing)

Drawing 4C

3-way (manually-set) mixing valve vent air handler

low temperature manifold station

high limit safety

balancing valve make-up water

e g r u p

purge



P1


OFF T/P



Munchkin heater

NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

Fig. 8-7 24

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. All closely spaced tees shall be within 4 pipe diameter center to center spacing. A minimum of 6 pipe diameters of straight pipe shall be installed upstream a nd downstream of all closely spaced tees. The minimum pipe size for connecting a Super Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater shall be 1.25 inches. All pumps are shown with isolation flanges and integral flow check valves. The alternative is standard flanges with full port ball valves and a separate flow check valve. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119 F. Install a minimum of 12 diameters of straight pipe upstream of all circulators. A purging valve may be used in lieu of the ball valve / hose bib combination shown. Adjust 3-way manually-set mixing valve to yield proper supply temperature to lower temperature load.

PIPING

Munchkin VISION 1 system Drawing 4E (zoning with circulators) Space heating mode (3 fully reset supply temperatures) medium temperature manifold station

vent

air handler (higher temp.) vent

high limit safety

low temperature manifold station make-up water

e g r u p

purge

balancing valves 3-way (manually-set) mixing valve


P1

DHW temp. sensor


OFF T/P



Munchkin heater

NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. All closely spaced tees shall be within 4 pipe diameter center to center spacing. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees. The minimum pipe size for connecting a Sup er Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater shall be 1.25 inches. All pumps are shown with isolation flanges and integral flow check valves. The alternative is standard flanges with full port ball valves and a separate flow check valve. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119 F. Do not use valve actuators on manifolds supplied by manually-set 3-way mixing vaalves. A purging valve may be used in lieu of the ball valve / hose bib combination shown. Adjust 3-way manually-set mixing valve to yield proper supply temperature to lower temperature load.

Fig. 8-8 25

PIPING

Munchkin VISION 1 system Drawing 4F (zoning with circulators) Space heating mode (3 different supply temperatures) 3-way manually-set mixing valve

vent

air handler (higher temp.) vent low temperature manifold station high limit safety variable speed injection mixing make-up water

e g r u p

purge

balancing valves

medium temperature manifold station

anti-scald mixing valve purge

P1

DHW temp. sensor


OFF T/P



Munchkin heater

NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

Fig. 8-9 26

This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. All closely spaced tees shall be within 4 pipe diameter center to center spacing. A minimum of 6 pipe diameters of straight pipe shall be installed upstream a nd downstream of all closely spaced tees. The minimum pipe size for connecting a Super Stor water heater is 1 inch. The minimum pipe size for connecting a Munchkin heater shall be 1.25 inches. All pumps are shown with isolation flanges and integral flow check valves. The alternative is standard flanges with full port ball valves and a separate flow check valve. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119 F. Follow all instructions for installation of injection mixing system. A purging valve may be used in lieu of the ball valve / hose bib combination shown. Adjust 3-way manually-set mixing valve to yield proper supply temperature to lower temperature load.

Piping

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