Pentair MASTERTEMP 125 Installation And User Manual

Rev. B 8/14 MASTERTEMP
®
125 Pool and Spa Heater Installation and User’s Guide
29
Section 3. Installation Instructions
CONNECTION OF FIREMAN’S SWITCH OR REMOTE CONTACT
CAUTION
If, while there is line voltage connected to the heater, you touch either line voltage terminal with any 24VAC wire that
is connected to the control board (including the Fireman’s Switch jumper), you will immediately destroy the control
board and void the warranty.
REMOTE CONTROL CONNECTIONS
 6ZLWFKRIISRZHUWRKHDWHUDWPDLQFLUFXLWEUHDNHUSDQHO
 8QEROWDQGUHPRYHWKHDFFHVVGRRUSDQHOV
 2SHQFRQWUROER[FRYHUVHH
)LJXUH
D To connect a 2-Wire Control VXFK DV ,QWHOOL7RXFK
®
 RU (DV\7RXFK

&RQWURO
6\VWHP or a timer:
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 &RQQHFWZLUHVEHWZHHQWKH)LUHPDQ¶V6ZLWFKWHUPLQDOVRQWKHKHDWHUDQGWKH
UHOD\&RQQHFWZLUHVIURPWKHFRQWUROOHURUWLPHUWRWKH)LUHPDQ¶V6ZLWFK
&RQWUROOHU WLPHU RU UHOD\ VKRXOG EH VL]HG WR KDQGOH 9$& DW $PS
EHFDXVHLWZLOOEHFRPSOHWLQJWKH9$&FRQWUROERDUGFLUFXLWRQWKHKHDWHU
DVVKRZQLQ
)LJXUH'2127DSSO\OLQHYROWDJHWRWKH)LUHPDQ¶V6ZLWFK
WHUPLQDOV8VHJDXJHZLUHZLWKDPLQLPXP´PPWKLFNLQVXODWLRQ
UDWHGIRUDWHPSHUDWXUHULVHRIDWOHDVW&
 .QRFNRXWVDUHSURYLGHGWRURXWHWKHZLUHVWKURXJK
WKHERWWRPRIWKHFRQWUROER[DQGSDVWWKHMXQFWLRQ
ER[
E To connect a 3-Wire Control:
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RQWKHKHDWHUDQGWKHH[WHUQDOUHOD\VDVVKRZQLQ
)LJXUH8VHDWOHDVWUHOD\VSHUKHDWHUWRDOORZ
IRUDQ³2))VHWWLQJ´RQHDFKKHDWHUPRGH6HOHFW
UHOD\VWKDWFDQKDQGOHORJLFOHYHOVZLWFKLQJ'2127
DSSO\OLQHYROWDJHWRFRQWUROERDUGWHUPLQDOV
 0RYH MXPSHU DV VKRZQ RQ
)LJXUH  WR HQDEOH
H[WHUQDOFRQWURODQGWRGLVDEOHWKHKHDWHUPHPEUDQH
SDG¶V³3RRO21´DQG³6SD21´EXWWRQVWKH³2))´
NH\RQWKHPHPEUDQHSDGUHPDLQVIXQFWLRQDO
 .QRFNRXWVDUHSURYLGHGWRURXWHWKHZLUHVWKURXJK
WKHERWWRPDQGWKHWRSRIWKHFRQWUROER[DQGSDVW
WKHMXQFWLRQER[
 &ORVHFRQWUROER[FRYHU
 5HLQVWDOOWKHDFFHVVGRRUSDQHOV
7R FRQWURO KHDWHUV WKDW DUH RSHUDWHG LQ SDUDOOHO FRQQHFW
ZLULQJ DW VDPH ORFDWLRQV RQ KHDWHU DV :LUH RU :LUH
&RQWURO,WLVLPSHUDWLYHWKDWHDFKFRQWUROFLUFXLWLVLVRODWHG
IURPWKH RWKHU FRQWUROFLUFXLWV WR DYRLG WKDWFXUUHQW ZLOO
ÀRZIURPRQHKHDWHUWRDQRWKHUWKURXJKWKHFRQWUROFLUFXLWV
127,&(7KHIXVHIRUWKH)LUHPDQ¶V6ZLWFKLVD$PS
ó[ó´IDVWEORZIXVHZKLFKLVFRPPRQO\DYDLODEOH
GND
L1
GROUND (GND )
L2
JUNCTION
BO
X
L1
L2
BM
FL
F1
L1
TRAN S
F
I
R
E
M
A
N
S
S
W
I
T
C
H
Fireman's Switch
Completes the heater
24 Volt AC Control
Board Circuit.
DO NOT connect this
circuit to Line Voltage!
YY
R
W
G
Y
Y
TERMINAL BOARD
TRANS
TRANS
FUSE
FUSE
L2
Time Clock or Remote
(Purchase Separately –
Supplies Power to
Circulator Pump)
24VAC
24 VAC
BK
O
O
BK
W
R
BK
R
W
12 Pin Receptacle
VAL
TH
IND
GND
24VAC 24VAC
FS
THERMISTOR
OPERATING CONTROL
DISABLE TOGGLE
ENABLE TOGGL
E
MEMBRANE PAD
CONNECTION
9
1
J6
Figure 23.
Figure 22

Pentair MASTERTEMP 125 Specifications

General

BTU Output	125, 000 BTU/hr
Fuel Type	Natural Gas or Propane
Ignition System	Electronic
Minimum Flow Rate	20 GPM
Maximum Working Pressure	50 PSI
Efficiency	82%
Water Connections	1.5 inch
Certifications	ANSI Z21.56
Voltage	120V