Buderus GB142 User Manual

Applications Manual for

Buderus GB142 Wall Hung Heaters

BTC 435001101 A | 05.2009

Table of Contents

1	Introduction	1
2	Description of Main Components
	Pre-piped Manifold and Pump Settings	2
	Pump Sizing for Buderus Indirect Tanks	2
	BC10 Controller	4
	RC10 Room Controller	4
	Space Heating Options	4
	DHW Heating Operation	4
3	Description of Operation
	Dimensions and Connections	5
	Space Heating	6
	Domestic Hot Water Heating	6

4

5

	Venting Guidelines	7
	Horizontal Venting	8
	Vertical Venting	9
	Condensate Piping	16
	Piping and Wiring Applications
	Mechanical / Electrical Symbols	17
	GB142 with DHW zone and indoor reset	18
	GB142 with DHW zone and on/off heating zone	20
	GB142 with DHW zone, Comfort Zone and zone valves	22
	GB142 with DHW zone, Indoor reset, Buderus Pumping Station and	24
	zone valves
	GB142 with DHW zone, single temperature of radiant. No Mixing Valve	26
	required
	GB142 with DHW zone, motorize mixing valve zone, thermostatic	28
	mixing valves zone and high temperature zone.
	GB142 with DHW zone, and high temperature on/off zones	30
	GB142 with DHW zones, constant circulation w/ Comfort zone control	32
	GB142 with DHW zone & the Buderus Quick Fit Modular Piping	34
	systems
	Near GB142 Piping with Multiple GB142’s	36
	Multiple GB142 Units with DWH zone piping diagrams	40
	RC10 Error Codes	41

21 DESCRIPTIONINTRODUCTIONOF MAIN COMPONENTS

This GB142 Applications Manual is intended to present some of the most common applications of the wall-hung Buderus GB142 heater for use in hot water space heating applications. Applications are shown with both piping and corresponding electrical schematics. Auxiliary equipment depicted does not necessarily represent any one particular manufacturer or specific model number. There are a wide variety of techniques, practices and piping strategies possible with hydronic heating systems and it is the responsibility of the installing contractor to determine the most suitable arrangement for his application.

In an effort to simplify piping and electrical diagrams, only Diagrams 1P and 1E depict the complete details with respect to piping and wiring of an indirect hot water tank. This part is left off all subsequent drawings for clarity purposes.

Basic information regarding vent installation, clearances, condensate piping and termination locations are included as well.

Although this manual covers many common applications for our equipment, system possibilities are virtually endless. Should you encounter an application that is not covered in this manual or have any questions regarding any of its content, we encourage you to contact your local sales rep or us directly at Bosch Thermotechnology Corp.

Page 1

		re standard suppli d with a pre-p
PREAl-PIPEDl GB14MANIFOLD2 ANDa PUMP SETTINGS
facilitate		quir		primary/s condary piping
p essure and temperatur gauge, purge statio
Grundfos UPS15-58 3-speed heater pump are in
to Diagram 1P).
Table 1T shovaluews for different speed settings
model.
Table 1: Max Heater T (ºF) Values for UPS 15-58 Manifold Pump
Heater Model		Speed 1		Speed 2		Speed 3
GB142/24		26		N/A		N/A
GB142/30		33		N/A		N/A
GB142/45		A		32		28
GB142/60		N/A		43		32

Integrated heater controls will automaticallTexceedsy
45 ºF regardless of feedback signal from the
always take placeTexcebeforeds99 ºF.						The	maximum fl
GB142/24 or /30: 11 GPM, model /45: 15 GPM, m
PUMPAllSIZINGheatinFOR BUDERUSg zoneINDIRECTs TarANKSe piped directly off the
returns combined on the r						urn (right side).
pump (PS) are included on					the heater ma ifol
recommendations for differe t Buderus indir
to be at least 1”. Use a minimum number of									e
Table 2: Indirect Pump Recommendations for GB142/24 and /30 models.
		GB142/24			GB142/30
Tank Model	Grundfos	Taco**	B & G	Grundfos	Taco** B & G
S120	UP14-42 3*007			NRF22	UP26-64		0012		P
ST150				1				3
ST200
ST300	UP26-64		0014 PL30			UP26-64		0011
ST400	NR	0011		PL45		NR	NR	NR

SU500* RefeUP26rst-o64Grundfo0014s PL30UP15-42UP26w/ -built640011-in f

* R fers to Taco 007 without built-in fl NR – combination not recommended

Page 2

Table 3: Indirect Pump Recommendations

Tank Model

GB14 4/25

GB14 6/20

Grundfos

Grundfos

Taco** B & G

120

64

0014

PL36

UP26-64

0011

150

NR

PL36 NR

0013

PL36

2

3

UP26-99

0013

PL36 UP26-99 0013

T4

NR

UP26-99

NR

500

NR

NR

PL36

NR

NR

PL36

750 *

-64 0012

0011

SU1000

UP26***

PL30

UP26-64

0012

Ref

to Grundfos UP15-42 w/ built-in

** Refers to Taco 007 without built-in f

*** SU750 nd SU1000 tanks are non sto

NR –

combination not

recommended

Tables

and 5 show pump recommendations fo

GB142DHWsensorisplacedinonetank;ahighlimand wired series with the pump power to

heater. Tank pumps are placed in pa

equallyfromthetanks.

Table4:TwoTankSystems

TankB & G

GB142/30

Taco

B &GB142/45Grundfos

Taco

BGB142/& Grun

Grundfos

150

2

3

ST400PL50 15-42 009 PL30 26-64 0014 PL30

Table 5: Three Tank Systems

TankB & G

GB142/30

Taco

B &GB142/45Grundfos

Taco

BGB142/& Grun

Grundfos

150

50

2

3

ST400NRF22 15-42 008 PL30 26-64 009 PL30

Electrically the GB142 has 120 V connection

indirect tank charging pump PS and DHW reci

PS and PZ combined).

The low voltage side is equipped with the f
1) RC terminals (orange color) for an indo
burner. (RC10 control standard supplied
2) FAoptionaloutdoorsensorterminals(blue
available Fall 2005).
3) WA T-T erminals (light green color) co
4)	FW DHW				tank sensor terminals (light gra
(Tank sensorstandardsupplied with GB142
5) EV terminals (red color) for connecting
reset high limit or any other type of ex
	ONTROLLER
ABC10controlpanelisinstalledineveryGB142w
indicatoragnostic				light , dials for DHW and maximum
					access	buttons.	A	etailed desc
with		the GB142 Installation					and	Service Man
	OOM ONTROLLER
RC10RC
A RC10 room controller is provided with eve
precision control back to the BC10.									The RC
indoor feedback to the GB142.								The RC10 wi
					based onmaintainingdesired ind
temperaturein the in living area for optimum comfort
consideration to the placement of the RC10
The use of the RC10 indoor room controller
maximumcomfort and efficiency from the
boiler pump (PK) are shown on each wiringprod
NOTE: Neverconnect a RC10 control and a thermost
PACEEATINGPERATION
S	H		O		:	perates and the burner
The PK boiler pump
from the RC10 controller. UsebutonlyTdo NOTconnuse
hesameinstallation. Once hecallforheatissatisfied,
thr ugh			an		adjustable programmable post-pur
also		set to operate continuously for up to
	EATINGPERATION
DHWH			O		:
A call for heat from the FW (DHW) sensor br
PK		mp, firing the boiler to maximum tempe

includesananticipativeDHWheatingcyclewith reduces burner modulation rate.

Page4

3 DIMENSIONS, CONNECTIONS ANDAND CLEARANCESCLEARANCES

Fig. 1: Dimensions and Connections fo

Fig. 2: Dimensions and Connections for G

4 VENTING GUIDELINES

VENTING

UIDELINES

The GB142 s suitable for side-wall as well

CP C pipe

in compliance with ANSI, ASTM D17

DWV),

or ABS-DWV Schedule 40. Cement and p

Canada, use CSA or ULC

certifiedFoamPVCcore CPV

pipe can not be used.

Note:Installation must comply with local req

Z223.1 (USA installations) CSA B149.1 or B1

must comply with ULC-S636.

NInstallingcontractormustinstallco:

the fi st 90 degree flue elbow.

Condensatem

appropriatedrain.

The GB142 is approved for bothFIG.f3A Vent

FIG.for3Bterminati-

cation) aswellasDirectExhaust(nonsealedoperation in both rizontal an

foll

w

National Fu Gas Code to

ensure amp

approved

for 0”

clearance to combustibles f

Table 6:

Equivalent Vent

Lengths

Model

Maximum Eq. Intake Length

(ft) Ma

2

3/,44/,04

100

100

GB14

60/2

60

60

Table 7: Friction Loss

Equivalent for Fitt

FittingsorPiping

Equivalent Length

3

45

º

9º0blEow

5

Optional Concentric Vent Kit

3

Page6

Fig. 3A

		12"
		minimum
	12"	12"
		minimum
	minimum

Fig 3B

Page

	D		V /S		C		&D V /N-S
	IRECTENTEALEDOMBUSTIONIRECTENTON EALED
	C					G
	OMBUSTIONTERMINATIONUIDELI ES
	WARNING: Follow these								when det
	possibili y of severe personalinstructionsjury, deat
	of	combusti n				air. Gas vent		extending throu
	wall or be ow					building extensions s ch as
		uld result				in severe personal			injury, dea
	concentricvent/air termination using the fo
		The total length of piping for vent or c
		6formaximumoutput.
		Onemust consider the immediate environme
			PrevailingwindscouldfreezecondGases ll form a white plume							nsateawinter
			plants or roof. Do not					terminate		vent i
			other recessed areas.
		Maintain Minimum Clear nces below to pre
		1. Ventmust terminate at						least 12 inches
		2	surface (Canada18”minimum).
					terminationmust be at least 7 fe
		3				be 3 feet bove any forced a
		4. Ventmust terminate at least 3 feet ho
			regulators,reliefvalves,and otherequip
			3 feet horizontaldi tance is maintaine
		5. Do not extend exposed vent							pipe outsi
			Condensate could freeze and block vent
		6. Ventshouldterminateatleast3feetaway
			below roof overhang.
		7. It is not recommended to terminate ve
			freeze causing ice						.
		8. Do not use chimneyformationsas raceway if an
			through chimney.
		9. The exhaust vent must be pitched up t
			foot		Condensate must flow back to the
			vent.
		10. Multiple boiler vent terminations; Se

Page8

E			INTAKE P
XHAUSTAND				IRLACEMENT			*:
	T		T R	P	—C
	HROUGHE OOFENETRATIONCENTRIC
	1		De ermine best location for vent/air term
	2		ut a 5” hole o ac				mmodate the 4½” diame
	3. Cement termination						concentric Y t 4½” di
			penetration and field supplied roof boot/flash
	4. Secure assembly to roof structure with fi
			material.
	5. Insert smaller 2½” PVC vent exhaust pipe
	6		ensuring PVC exhaust vent pipe is properly ce
			ement vent exhaust pipe and air inlet pi
	7				vent termination cannotbe ex ende
	8					termination may be cut to
	9. Concentric vent					shall terminate at least
			above roofFIGsurface.andFIG4.fo(se5r detailse)
		0 Operate heater through one complete cycl
	11. Refer to fig. 6 for multiple “Through the
			center distance.			* BUDERUS PART NUMBER: BRYKGAVT0602CVT

Page 10

S		-W P			(	)
IDEALLENETRATICONCENTRIC							for		(FIG. )3A&7.
	1			u	best
	2	p			a 5” hole		mmod		h terminat4½” d
					a on andlocationf e d suppl				d flashing i
	4.DetermineI s smaller 2½” PVC vvent/airxh ust pipe
	3. C				ermin		once		c Y to 4½” d
	5	ensuring PVC exhaust vent pipe is properly
				ement vent exhaust pipe and air inlet p
	6				vent termination cannotbe ex en
	7		Concentric v nt termination may be cut t
	8		Operate heater through one complete cycl
	9.		Allow 8” center to center h rizontal distanc
		multiple heater installations.