Bosch GWH 345 ESR Applications Manual page 13
Tankless water heaters
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Also See for GWH 345 ESR:
- User manual (40 pages) ,
- Applications manual (50 pages) ,
- Applications manual (48 pages)
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GWH 345/450 ESR applications manual
4.1.2 Fan Coil space heating and DHW electrical diagram
The following shows the appropriate electrical connections for
plumbing diagram 4.1.2
PK
Neutral
120Vac
Note: This drawing is conceptual in nature and does not address all design, installation or safety considerations.
Additional safety and/or auxiliary equipment may be needed. This diagram is for reference use by officials, designers and licensed installers.
It is expected that installers have adequate knowledge of accepted industry practices for the equipment, procedures, and applications involved.
Drawing is not to scale.
BOSCH THERMOTECHNOLOGY CORPORATION
Terminal box
P0
PE
PK
PS
L
N
LL
N
L
T
Stat
SR501
R
W
24
1 ZONE
VAC
SWITCHING RELAY
T
T
COM
120 VAC
INPUT
N
H 3
4
4
6
6
5
N/O
N/C
N/C
N/O
P1
Fan Coil Space Heating and DHW
Electrical Diagram
110VAC from outlet
ESR control
board
TT
LR
LS
AQUASTAT
Drawing # EFCOL
| 13
CN
revA 10/07
Applications manual | 02.2009
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