Danfoss 087H3803 User Manual

ApplicationA375.2—upto2burnersteps,P4isthecirculationpumpintheDHWcircuit
ApplicationA375.3—upto2burnersteps,P4isthecirculationpumpinheatingcircuit2
Double-insulated(two-chamber)transformer
Terminal
Description
Max.load
19
PhaseforalarmandburnerB2
18
Alarm(A1)
4(2)A/24Va.c.*
17
B2
BurnerON/OFF4(2)A/24Va.c.*
16
PhaseforpumpP4
15
K4
Controlofcirculationpump
4(2)A/24Va.c.*
14
Phaseforcontrolofpumpsandburner
13
K3
ControlofDHWheatingpump,circuit2(A375.2)orcircuit3(A375.3)
4(2)A/24Va.c.*
12
B1
BurnerON/OFF4(2)A/24Va.c.*
11
K1
ControlofcirculationpumpON/OFF,circuit1
4(2)A/24Va.c.*
10
Supplyvoltage24Va.c.-(SN)
9
Supplyvoltage24Va.c.-(SP)
8
PhaseformotorizedchangeovervalveoutputM1
7
M1
Motorizedchangeovervalve,DHWcircuitdirection,circuit2(A375.2)orcircuit3(A375.3)
1A/24Va.c.
6
M1
Motorizedchangeovervalve,heatingcircuitdirection,circuit2(A375.2)orcircuit3(A375.3)
1A/24Va.c.
5
PhaseformotorizedcontrolvalveM2,circuit2
4
M2
Motorizedcontrolvalve-opening,circuit2(A375.3)
1A/24Va.c.
3
M2
Motorizedcontrolvalve-closing,circuit2(A375.3)
1A/24Va.c.
*Relaycontacts:4Aforohmicload,2Aforinductiveload
Factoryestablishedjumpers:
5to8,9to14,Lto5andLto9,Nto10
VI.GU.L2.02
©Danfoss|2017.09|67
OperatingGuideECLComfort210/296/310,applicationA275/A375

Danfoss 087H3803 Specifications

General

Brand	Danfoss
Model	087H3803
Category	Controller
Language	English